"SQL 모음"의 두 판 사이의 차이
DB CAFE
(새 문서: --====================================================================================== --#. 01 테이블스페이스별 파일 목록을 보기 --===================================...) |
(→LOCK 걸링 SQL 구문 조회) |
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(사용자 5명의 중간 판 144개는 보이지 않습니다) | |||
1번째 줄: | 1번째 줄: | ||
− | + | = 인덱스 정보= | |
− | + | ||
− | + | ||
− | + | == INDEX 보기 == | |
− | + | * USER_INDEXES | |
− | + | * USER_IND_COLUMNS | |
− | + | <source lang="sql"> | |
− | + | ||
− | + | SELECT A.INDEX_NAME | |
− | + | , A.UNIQUENESS | |
− | + | , TO_CHAR(COLUMN_POSITION, '999') AS POS | |
− | + | , SUBSTRB(COLUMN_NAME, 1, 33) AS COLUMN_NAME | |
− | + | FROM USER_INDEXES A | |
− | + | , USER_IND_COLUMNS B | |
− | + | WHERE A.INDEX_NAME = B.INDEX_NAME | |
− | + | AND A.TABLE_OWNER = UPPER('E_LUCIS') | |
− | + | AND A.TABLE_NAME = UPPER('&테이블명') ORDER BY 1, 3; | |
− | + | </source> | |
− | + | ||
− | + | == 전체 INDEX 보기 == | |
− | + | * DBA_INDEXES | |
− | + | * DBA_IND_COLUMNS | |
− | + | <source lang="sql"> | |
− | + | SELECT SUBSTRB(A.TABLE_NAME, 1, 22) AS TABLE_NAME | |
− | + | , SUBSTRB(A.INDEX_NAME, 1, 23) AS INDEX_NAME | |
− | + | , SUBSTRB(A.UNIQUENESS, 1, 7) AS UNIQUE | |
− | + | , TO_CHAR(COLUMN_POSITION, '999') AS POS | |
− | + | , SUBSTRB(COLUMN_NAME, 1, 20) AS COLUMN_NAME | |
− | + | FROM DBA_INDEXES A | |
− | + | , DBA_IND_COLUMNS B | |
− | + | WHERE A.INDEX_NAME = B.INDEX_NAME | |
− | + | AND A.TABLE_OWNER = B.TABLE_OWNER | |
− | + | AND A.TABLE_OWNER = 'E_LUCIS' | |
− | + | ORDER BY 1, 2, 3; | |
− | + | </source> | |
− | + | ||
− | + | == 특정 테이블의 인덱스 확인 == | |
− | + | * ALL_IND_COLUMNS | |
− | + | <source lang="sql"> | |
− | + | /* 인덱스를 확인 하고자 할때 사용하는 쿼리 */ | |
− | + | SELECT C.TABLE_NAME | |
− | + | , C.INDEX_NAME | |
− | + | , C.COLUMN_NAME | |
− | + | , C.COLUMN_POSITION | |
− | + | , T.NUM_ROWS | |
− | + | FROM ALL_IND_COLUMNS C | |
− | + | , (SELECT TABLE_NAME, NUM_ROWS | |
− | + | FROM ALL_TABLES | |
− | + | WHERE OWNER = 'ESTDBA' | |
− | + | AND TABLE_NAME IN (SELECT TABLE_NAME | |
− | + | FROM USER_TABLES | |
− | + | WHERE TABLE_NAME LIKE:IN_TABLE_NAME || '%' | |
− | + | ) | |
− | + | AND NUM_ROWS > 0 | |
− | + | ) T | |
− | + | WHERE C.TABLE_NAME = T.TABLE_NAME | |
− | + | ORDER BY T.NUM_ROWS DESC, C.TABLE_NAME, C.INDEX_NAME, C.COLUMN_POSITION; | |
− | + | </source> | |
− | + | ||
− | + | == 인덱스에 대한 컬럼 조회 == | |
− | + | * USER_IND_COLUMNS | |
− | + | <source lang="sql"> | |
− | + | SELECT TABLE_NAME | |
− | + | , INDEX_NAME | |
− | + | , COLUMN_POSITION | |
− | + | , COLUMN_NAME | |
− | + | FROM USER_IND_COLUMNS | |
− | + | ORDER BY TABLE_NAME, INDEX_NAME, COLUMN_POSITION; </source> | |
− | + | ||
− | + | == PRIMARY KEY 재생성 방법 == | |
− | + | <source lang="sql"> | |
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--- PRIMARY KEY DROP | --- PRIMARY KEY DROP | ||
− | + | ||
− | ALTER TABLE EMP DROP PRIMARY KEY; | + | ALTER TABLE EMP |
− | + | DROP PRIMARY KEY; | |
− | -- PRIMARY KEY 생성 | + | |
− | ALTER TABLE EMP ADD CONSTRAINT EMP_PK PRIMARY KEY(EMPNO) | + | -- PRIMARY KEY 생성 |
− | USING INDEX STORAGE(INITIAL 1M NEXT 1M PCTINCREASE 0) | + | |
− | TABLESPACE USERS; | + | ALTER TABLE EMP |
− | + | ADD CONSTRAINT EMP_PK | |
− | + | PRIMARY KEY(EMPNO) | |
− | + | USING INDEX STORAGE(INITIAL 1M NEXT 1M PCTINCREASE 0) | |
− | + | TABLESPACE USERS; | |
− | + | ||
− | + | </source> | |
− | + | ||
− | + | == PRIMARY KEY를 REFERENCE 하는 FOREIGN KEY 찾기 == | |
− | + | * DBA_OBJECTS | |
− | + | * CDEF$ | |
− | + | * CON$ | |
− | + | <source lang="sql"> | |
− | + | SELECT C.NAME CONSTRAINT_NAME | |
− | + | FROM DBA_OBJECTS A | |
− | + | , CDEF$ B | |
− | + | , CON$ C | |
− | + | WHERE A.OBJECT_NAME = UPPER('&테이블명') | |
− | + | AND A.OBJECT_ID = B.ROBJ# | |
− | + | AND B.CON# = C.CON#; </source> | |
− | + | ||
− | + | == 중복인덱스 체크 == | |
− | + | * SYS.ICOL$ | |
− | + | * SYS.IND$ | |
− | + | * SYS.OBJ$ | |
− | + | * SYS.USER$ | |
− | + | ||
− | + | <source lang="sql"> | |
− | + | SELECT O1.NAME || '.' || N1.NAME REDUNDANT_INDEX | |
− | + | , O2.NAME || '.' || N2.NAME SUFFICIENT_INDEX | |
− | + | FROM SYS.ICOL$ IC1 | |
− | + | , SYS.ICOL$ IC2 | |
− | + | , SYS.IND$ I1 | |
− | + | , SYS.OBJ$ N1 | |
− | + | , SYS.OBJ$ N2 | |
− | + | , SYS.USER$ O1 | |
− | + | , SYS.USER$ O2 | |
− | + | WHERE IC1.POS# = 1 | |
− | + | AND IC2.BO# = IC1.BO# | |
− | + | AND IC2.OBJ# != IC1.OBJ# | |
− | + | AND IC2.POS# = 1 | |
− | + | AND IC2.INTCOL# = IC1.INTCOL# | |
− | + | AND I1.OBJ# = IC1.OBJ# | |
− | , | + | AND BITAND (I1.PROPERTY, 1) = 0 |
− | + | AND (SELECT MAX (POS#) * (MAX (POS#) + 1) / 2 | |
− | + | FROM SYS.ICOL$ | |
− | + | WHERE OBJ# = IC1.OBJ#) = | |
− | + | (SELECT SUM (XC1.POS#) | |
− | + | FROM SYS.ICOL$ XC1, SYS.ICOL$ XC2 | |
− | + | WHERE XC1.OBJ# = IC1.OBJ# | |
− | + | AND XC2.OBJ# = IC2.OBJ# | |
− | FROM | + | AND XC1.POS# = XC2.POS# |
− | WHERE | + | AND XC1.INTCOL# = XC2.INTCOL#) |
− | AND | + | AND N1.OBJ# = IC1.OBJ# |
− | + | AND N2.OBJ# = IC2.OBJ# | |
− | + | AND O1.USER# = N1.OWNER# | |
− | + | AND O2.USER# = N2.OWNER#; | |
− | + | </source> | |
− | + | 또는 | |
− | + | <source lang=sql> | |
− | + | ||
− | + | select /*+ rule */ | |
− | + | a.table_owner, | |
− | + | a.table_name, | |
− | + | a.index_owner, | |
− | + | a.index_name, | |
− | + | column_name_list, | |
− | + | column_name_list_dup, | |
− | + | dup duplicate_indexes, | |
− | + | i.uniqueness, | |
− | + | i.partitioned, | |
− | + | i.leaf_blocks, | |
− | + | i.distinct_keys, | |
+ | i.num_rows, | ||
+ | i.clustering_factor | ||
+ | from | ||
+ | ( | ||
+ | select | ||
+ | table_owner, | ||
+ | table_name, | ||
+ | index_owner, | ||
+ | index_name, | ||
+ | column_name_list_dup, | ||
+ | dup, | ||
+ | max(dup) OVER | ||
+ | (partition by table_owner, table_name, index_name) dup_mx | ||
+ | from | ||
+ | ( | ||
+ | select | ||
+ | table_owner, | ||
+ | table_name, | ||
+ | index_owner, | ||
+ | index_name, | ||
+ | substr(SYS_CONNECT_BY_PATH(column_name, ','),2) | ||
+ | column_name_list_dup, | ||
+ | dup | ||
+ | from | ||
+ | ( | ||
+ | select | ||
+ | index_owner, | ||
+ | index_name, | ||
+ | table_owner, | ||
+ | table_name, | ||
+ | column_name, | ||
+ | count(1) OVER | ||
+ | (partition by | ||
+ | index_owner, | ||
+ | index_name) cnt, | ||
+ | ROW_NUMBER () OVER | ||
+ | (partition by | ||
+ | index_owner, | ||
+ | index_name | ||
+ | order by column_position) as seq, | ||
+ | count(1) OVER | ||
+ | (partition by | ||
+ | table_owner, | ||
+ | table_name, | ||
+ | column_name, | ||
+ | column_position) as dup | ||
+ | from | ||
+ | sys.dba_ind_columns | ||
+ | where | ||
+ | index_owner not in ('SYS', 'SYSTEM')) | ||
+ | where | ||
+ | dup!=1 | ||
+ | start with seq=1 | ||
+ | connect by prior seq+1=seq | ||
+ | and prior index_owner=index_owner | ||
+ | and prior index_name=index_name | ||
+ | )) a, | ||
+ | ( | ||
+ | select | ||
+ | table_owner, | ||
+ | table_name, | ||
+ | index_owner, | ||
+ | index_name, | ||
+ | substr(SYS_CONNECT_BY_PATH(column_name, ','),2) column_name_list | ||
+ | from | ||
+ | ( | ||
+ | select index_owner, index_name, table_owner, table_name, column_name, | ||
+ | count(1) OVER ( partition by index_owner, index_name) cnt, | ||
+ | ROW_NUMBER () OVER ( partition by index_owner, index_name order by column_position) as seq | ||
+ | from sys.dba_ind_columns | ||
+ | where index_owner not in ('SYS', 'SYSTEM')) | ||
+ | where seq=cnt | ||
+ | start with seq=1 | ||
+ | connect by prior seq+1=seq | ||
+ | and prior index_owner=index_owner | ||
+ | and prior index_name=index_name | ||
+ | ) b, dba_indexes i | ||
+ | where | ||
+ | a.dup=a.dup_mx | ||
+ | and a.index_owner=b.index_owner | ||
+ | and a.index_name=b.index_name | ||
+ | and a.index_owner=i.owner | ||
+ | and a.index_name=i.index_name | ||
+ | order by | ||
+ | a.table_owner, a.table_name, column_name_list_dup; | ||
+ | </source> | ||
+ | |||
+ | == 테이블의 PK를 구성하는 컬럼 조회 == | ||
+ | * USER_TABLES | ||
+ | * USER_CONSTRAINTS | ||
+ | * USER_CONS_COLUMNS | ||
+ | <source lang="sql"> | ||
+ | SELECT A.TABLE_NAME, B.CONSTRAINT_NAME, C.COLUMN_NAME | ||
+ | FROM USER_TABLES A | ||
+ | , USER_CONSTRAINTS B | ||
+ | , USER_CONS_COLUMNS C | ||
+ | WHERE A.TABLE_NAME = B.TABLE_NAME | ||
+ | AND B.CONSTRAINT_NAME = C.CONSTRAINT_NAME | ||
+ | AND B.CONSTRAINT_TYPE = 'P'; | ||
+ | </source> | ||
+ | |||
+ | == Index가 없는 Table 조회 == | ||
+ | * DBA_TABLES | ||
+ | * DBA_INDEXES | ||
+ | <source lang="sql"> | ||
+ | SELECT OWNER, TABLE_NAME | ||
+ | FROM (SELECT OWNER | ||
+ | , TABLE_NAME | ||
+ | FROM DBA_TABLES | ||
+ | MINUS | ||
+ | SELECT TABLE_OWNER | ||
+ | , TABLE_NAME | ||
+ | FROM DBA_INDEXES | ||
+ | ) | ||
+ | WHERE OWNER NOT IN ('SYS', 'SYSTEM') ORDER BY OWNER, TABLE_NAME; | ||
+ | </source> | ||
+ | |||
+ | = 락 정보 = | ||
+ | == 테이블에 LOCK이 걸렸는지를 보기 == | ||
+ | * V$SESSION | ||
+ | * V$LOCK | ||
+ | * DBA_OBJECTS | ||
+ | <source lang="sql"> | ||
+ | SELECT A.SID | ||
+ | , A.SERIAL# | ||
+ | , SUBSTRB(A.USERNAME, 1, 16) AS USERNAME | ||
+ | , SUBSTRB(A.MACHINE, 1, 30) AS MACHINE | ||
+ | , A.TERMINAL | ||
+ | , A.OSUSER | ||
+ | , A.PROGRAM | ||
+ | , SUBSTRB(TO_CHAR(A.LOGON_TIME, 'MM/DD HH24:MI:SS'), 1, 14) AS LOGON_TIME | ||
+ | , SUBSTRB(C.OBJECT_NAME, 1, 58) AS OBJECT_NAME | ||
+ | FROM V$SESSION A | ||
+ | , V$LOCK B | ||
+ | , DBA_OBJECTS C | ||
+ | WHERE A.SID = B.SID AND B.ID1 = C.OBJECT_ID | ||
+ | AND B.TYPE = 'TM' | ||
+ | AND C.OBJECT_NAME LIKE UPPER('&테이블명'); | ||
+ | </source> | ||
+ | |||
+ | == Lock을 잡고있는 세션과 기다리는 세션 조회 == | ||
+ | * V$SESSION | ||
+ | * V$LOCK | ||
+ | * DBA_OBJECTS | ||
+ | |||
+ | <source lang="sql"> | ||
+ | SELECT DECODE(B.LOCKWAIT, NULL, ' ', 'w') AS WW | ||
+ | , B.SID | ||
+ | , B.SERIAL# AS SER# | ||
+ | , SUBSTR(B.MACHINE, 1, 10) AS MACHINE | ||
+ | , SUBSTR(B.PROGRAM, 1, 15) AS PROGRAM | ||
+ | , SUBSTR(A.OBJECT_NAME, 1, 17) AS OBJ_NAME | ||
+ | , SUBSTR(B.STATUS, 1, 1) AS S | ||
+ | , DECODE(B.COMMAND, 0, NULL, 2, 'INSERT', 6, 'UPDATE', 7, 'DELETE', B.COMMAND) AS SQLCMD | ||
+ | , B.PROCESS AS PGM_PSS | ||
+ | FROM V$SESSION B | ||
+ | , ( SELECT A.SID, DECODE(B.OWNER, NULL, A.TYPE || '..ing', B.OWNER || '.' || B.OBJECT_NAME) AS OBJECT_NAME | ||
+ | FROM V$LOCK A | ||
+ | , DBA_OBJECTS B | ||
+ | WHERE A.ID1 = B.OBJECT_ID(+) | ||
+ | GROUP BY A.SID, DECODE(B.OWNER, NULL, A.TYPE || '..ing', B.OWNER || '.' || B.OBJECT_NAME) | ||
+ | ) A | ||
+ | WHERE B.SID = A.SID | ||
+ | AND B.TADDR IS NOT NULL; | ||
+ | </source> | ||
+ | |||
+ | == 테이블에 걸린 비정상적 LOCK 풀기 == | ||
+ | <source lang="sql"> ALTER SYSTEM KILL SESSION '&SID,&SERIAL'; </source> | ||
+ | * RAC | ||
+ | <source lang="sql"> ALTER SYSTEM KILL SESSION '&SID,&SERIAL,@1'; </source> | ||
+ | |||
+ | == 작업 중인 데이터베이스 트랜잭션 조회 == | ||
+ | * V$SESSION | ||
+ | * V$TRANSACTION | ||
+ | * DBA_ROLLBACK_SEGS | ||
+ | <source lang="sql"> | ||
+ | SELECT S.SID | ||
+ | , S.SERIAL# | ||
+ | , S.STATUS | ||
+ | , S.OSUSER | ||
+ | , S.USERNAME | ||
+ | , T.STATUS | ||
+ | , T.START_TIME | ||
+ | FROM V$SESSION S | ||
+ | , V$TRANSACTION T | ||
+ | , DBA_ROLLBACK_SEGS R | ||
+ | WHERE S.TADDR = T.ADDR | ||
+ | AND T.XIDUSN = R.SEGMENT_ID; | ||
+ | </source> | ||
+ | |||
+ | == 열려 있는 커서 조회 == | ||
+ | * V$SESSION | ||
+ | * V$OPEN_CURSOR | ||
+ | <source lang="sql"> | ||
+ | SELECT A.SID | ||
+ | , A.OSUSER | ||
+ | , COUNT(B.SID) AS "CURSOR" | ||
+ | , A.PROGRAM | ||
+ | , A.STATUS | ||
+ | FROM V$SESSION A | ||
+ | , V$OPEN_CURSOR B | ||
+ | WHERE A.SID = B.SID(+) | ||
+ | GROUP BY A.SID, A.OSUSER, A.PROGRAM, A.STATUS; | ||
+ | </source> | ||
+ | |||
+ | == LOCK 발생 유형 조회 == | ||
+ | * V$LOCK | ||
+ | <source lang="sql"> SELECT A.SID | ||
+ | |||
+ | ,DECODE(A.TYPE | ||
+ | ,'MR', 'MEDIA RECOVERY' | ||
+ | ,'RT', 'REDO THREAD' | ||
+ | ,'UN', 'USER_NAME' | ||
+ | ,'TX', 'TRANSACTION' | ||
+ | ,'TM', 'DML' | ||
+ | ,'UL', 'PL/SQL USER LOCK' | ||
+ | ,'DX', 'DISTRIBUTED XACTION' | ||
+ | ,'CF', 'CONTROL FILE' | ||
+ | ,'IS', 'INSTANCE STATE' | ||
+ | ,'FS', 'FILE SET' | ||
+ | ,'IR', 'INSTANCE RECOVERY' | ||
+ | ,'FS', 'FILE SET' | ||
+ | ,'ST', 'DISK SPACE TRANSACTION' | ||
+ | ,'TS', 'TEMP SEGMENT' | ||
+ | ,'IV', 'LIBRARY CACHE INVAILDATION' | ||
+ | ,'LS', 'LOG START OR SWITCH' | ||
+ | ,'RW', 'ROW WAIT' | ||
+ | ,'SQ', 'SEQUENCE NUMBER' | ||
+ | ,'TE', 'EXTEND TABLE' | ||
+ | ,'TT', 'TEMP TABLE' | ||
+ | ,A.TYPE | ||
+ | ) | ||
+ | AS "LOCK_TYPE" | ||
+ | ,DECODE(A.LMODE | ||
+ | ,0, 'NONE' | ||
+ | ,1, 'NULL' | ||
+ | ,2, 'ROW-S(SS)' | ||
+ | ,3, 'ROW-X(SX)' | ||
+ | ,4, 'SHARE' | ||
+ | ,5, 'S/ROW-X(SSX)' | ||
+ | ,6, 'EXCLUSIVE' | ||
+ | ,TO_CHAR(A.LMODE) | ||
+ | ) | ||
+ | AS "MODE_HELD" | ||
+ | ,DECODE(A.REQUEST | ||
+ | ,0, 'NONE' | ||
+ | ,1, 'NULL' | ||
+ | ,2, 'ROW-S(SS)' | ||
+ | ,3, 'ROW-X(SX)' | ||
+ | ,4, 'SHARE' | ||
+ | ,5, 'S/ROW-X(SSX)' | ||
+ | ,6, 'EXCLUSIVE' | ||
+ | ,TO_CHAR(A.REQUEST) | ||
+ | ) | ||
+ | AS "MODE_REQUESTED" | ||
+ | ,TO_CHAR(A.ID1) AS "LOCK_ID1" | ||
+ | ,TO_CHAR(A.ID2) AS "LOCK_ID2" | ||
+ | ,DECODE(BLOCK, 0, 'NOT BLOCKING', 1, 'BLOCKING', 2, 'GLOBAL', TO_CHAR(BLOCK)) AS "BLOCKING_OTHERS" | ||
+ | |||
+ | FROM V$LOCK A WHERE (ID1, ID2) IN (SELECT B.ID1, ID2 | ||
+ | |||
+ | FROM V$LOCK B | ||
+ | WHERE B.ID1 = A.ID1); | ||
+ | |||
+ | </source> | ||
+ | |||
+ | == LOCK 상태 오브젝트 조회 == | ||
+ | * V$LOCKED_OBJECT | ||
+ | * V$SESSION | ||
+ | * DBA_OBJECT | ||
+ | <source lang="sql"> | ||
+ | SELECT A.SESSION_ID | ||
+ | , B.SERIAL# | ||
+ | , A.OS_USER_NAME | ||
+ | , A.ORACLE_USERNAME | ||
+ | , C.OBJECT_NAME | ||
+ | , A.LOCKED_MODE | ||
+ | , A.XIDUSN | ||
+ | FROM V$LOCKED_OBJECT A | ||
+ | , V$SESSION B | ||
+ | , DBA_OBJECTS C | ||
+ | WHERE A.OBJECT_ID = C.OBJECT_ID AND A.SESSION_ID = B.SID; | ||
+ | </source> | ||
+ | |||
+ | == LOCK 걸린 SQL 구문 조회 == | ||
+ | * V$SQLTEXT | ||
+ | * V$SESSION | ||
+ | * V$ACCESS | ||
+ | <source lang="sql"> | ||
+ | SELECT B.USERNAME AS USERNAME | ||
+ | , C.SID AS SID | ||
+ | , C.OWNER AS OBJECT_OWNER | ||
+ | , C.OBJECT AS OBJECT | ||
+ | , B.LOCKWAIT | ||
+ | , A.PIECE | ||
+ | , A.SQL_TEXT AS SQL | ||
+ | FROM V$SQLTEXT A | ||
+ | , V$SESSION B | ||
+ | , V$ACCESS C | ||
+ | WHERE A.ADDRESS = B.SQL_ADDRESS | ||
+ | AND A.HASH_VALUE = B.SQL_HASH_VALUE | ||
+ | AND B.SID = C.SID | ||
+ | AND C.OWNER!= 'SYS'; | ||
+ | </source> | ||
+ | |||
+ | == 해당 테이블의 세션을 제거하는 쿼리 == | ||
+ | * V$LOCK | ||
+ | * DBA_OBJECTS | ||
+ | * V$SESSION | ||
+ | <source lang="sql"> | ||
+ | SELECT 'ALTER SYSTEM KILL SESSION '''|| S.SID||','||S.SERIAL# ||''';' | ||
+ | FROM V$LOCK L, DBA_OBJECTS O, V$SESSION S | ||
+ | WHERE L.ID1 = O.OBJECT_ID | ||
+ | AND S.SID = L.SID | ||
+ | AND O.OWNER = 'ESTDBA' | ||
+ | AND O.OBJECT_NAME = 'TMP_GSYM2' | ||
+ | </source> | ||
+ | |||
+ | == Blocking Lock Session 확인 == | ||
+ | * V$SQLTEXT | ||
+ | * V$SESSION | ||
+ | * V$ACCESS | ||
+ | <source lang='sql'> | ||
+ | SELECT B.BLOCKING_SESSION AS BLOCKING_SESSION_SID | ||
+ | , C.SID AS LOCK_SESSION_SID | ||
+ | , C.OWNER AS OBJECT_OWNER | ||
+ | , C.OBJECT AS OBJECT | ||
+ | , B.LOCKWAIT | ||
+ | , A.PIECE | ||
+ | , A.SQL_TEXT AS SQL | ||
+ | FROM V$SQLTEXT A | ||
+ | , V$SESSION B | ||
+ | , V$ACCESS C | ||
+ | WHERE A.ADDRESS = B.SQL_ADDRESS | ||
+ | AND A.HASH_VALUE = B.SQL_HASH_VALUE | ||
+ | AND B.SID = C.SID | ||
+ | AND B.BLOCKING_SESSION IS NOT NULL | ||
+ | AND C.OWNER NOT IN ('SYS', 'PUBLIC') | ||
+ | AND C.OBJECT NOT IN ('TOAD_PLAN_TABLE') | ||
+ | ORDER BY A.PIECE; | ||
+ | </source> | ||
+ | |||
+ | = 테이블 정보 = | ||
+ | == 테이블 생성일자 보기 == | ||
+ | * USER_OBJECTS | ||
+ | <source lang="sql"> | ||
+ | SELECT SUBSTRB(OBJECT_NAME, 1, 15) AS OBJECT_NAME | ||
+ | , CREATED | ||
+ | , LAST_DDL_TIME | ||
+ | , TIMESTAMP | ||
+ | , STATUS | ||
+ | FROM USER_OBJECTS | ||
+ | WHERE OBJECT_NAME = UPPER('&테이블명') | ||
+ | AND OBJECT_TYPE = 'TABLE'; | ||
+ | </source> | ||
+ | |||
+ | == 테이블의 크기 및 블록 보기 == | ||
+ | * USER_SEGMENTS | ||
+ | <source lang="sql"> | ||
+ | SELECT SUBSTR(SEGMENT_NAME, 1, 20) | ||
+ | , BYTES | ||
+ | , BLOCKS | ||
+ | FROM USER_SEGMENTS | ||
+ | WHERE SEGMENT_NAME = UPPER('&테이블명'); | ||
+ | </source> | ||
+ | |||
+ | == 파티션 테이블의 파티션 범위 보기 == | ||
+ | * USER_TAB_PARTITIONS | ||
+ | <source lang="sql"> | ||
+ | SELECT SUBSTRB(PARTITION_NAME, 1, 30) AS PARTITION_NAME, SUBSTRB(TABLESPACE_NAME, 1, 30) AS TABLESPACE_NAME, HIGH_VALUE | ||
+ | FROM USER_TAB_PARTITIONS | ||
+ | WHERE TABLE_NAME = UPPER('&테이블명'); | ||
+ | </source> | ||
+ | |||
+ | == CONSTRAINT 보기 == | ||
+ | * DBA_CONSTRAINTS | ||
+ | * DBA_CONS_COLUMNS | ||
+ | <source lang="sql"> | ||
+ | SELECT DECODE(A.CONSTRAINT_TYPE, 'P', 'Primary Key', 'R', 'Foreign Key', 'C', 'Table Check', 'V', 'View Check', 'U', 'Unique', '?') AS "유형" | ||
+ | , SUBSTRB(A.CONSTRAINT_NAME, 1, 25) AS CONSTRAINT_NAME | ||
+ | , B.POSITION | ||
+ | , SUBSTRB(B.COLUMN_NAME, 1, 25) AS COLUMN_NAME | ||
+ | FROM DBA_CONSTRAINTS A | ||
+ | , DBA_CONS_COLUMNS B | ||
+ | WHERE A.CONSTRAINT_NAME = B.CONSTRAINT_NAME | ||
+ | AND A.OWNER = 'E_LUCIS' | ||
+ | AND A.TABLE_NAME = UPPER('&테이블명') ORDER BY 1, 2, 3; | ||
+ | </source> | ||
+ | |||
+ | == 특정 테이블의 스키마 구조 확인 == | ||
+ | === DBA 용 === | ||
+ | * DBA_TAB_COLUMNS | ||
+ | * DBA_COL_COMMENTS | ||
+ | * DBA_CONS_COLUMNS | ||
+ | <source lang="sql"> | ||
+ | |||
+ | SELECT OWNER | ||
+ | , TABLE_NAME | ||
+ | , COLUMN_NAME | ||
+ | , PK | ||
+ | , COLUMN_NAME | ||
+ | , DATA_TYPE || '( ' || NVL(DATA_TYPE_2, DATA_LENGTH) || ' )' DATA_TYPE | ||
+ | , NULLABLE | ||
+ | , COMMENTS | ||
+ | FROM (SELECT A.OWNER | ||
+ | , A.TABLE_NAME | ||
+ | , A.COLUMN_ID | ||
+ | , B.POSITION PK | ||
+ | , A.COLUMN_NAME | ||
+ | , A.DATA_TYPE | ||
+ | , A.DATA_PRECISION || DECODE(A.DATA_SCALE, NULL, NULL, ',' || A.DATA_SCALE) DATA_TYPE_2 | ||
+ | , A.DATA_LENGTH | ||
+ | , A.DATA_PRECISION | ||
+ | , A.DATA_SCALE | ||
+ | , A.NULLABLE | ||
+ | , A.COMMENTS | ||
+ | , ROW_NUMBER() OVER (PARTITION BY A.OWNER, A.TABLE_NAME, A.COLUMN_ID ORDER BY A.COLUMN_ID, B.POSITION) RN | ||
+ | FROM (SELECT COL.OWNER | ||
+ | , COL.TABLE_NAME | ||
+ | , COL.COLUMN_ID | ||
+ | , COL.COLUMN_NAME | ||
+ | , COL.DATA_TYPE | ||
+ | , COL.DATA_LENGTH | ||
+ | , COL.DATA_PRECISION | ||
+ | , COL.DATA_SCALE | ||
+ | , COL.NULLABLE | ||
+ | , COM.COMMENTS | ||
+ | FROM DBA_TAB_COLUMNS COL | ||
+ | , DBA_COL_COMMENTS COM | ||
+ | WHERE COL.COLUMN_NAME = COM.COLUMN_NAME | ||
+ | AND COL.OWNER = COM.OWNER | ||
+ | AND COL.TABLE_NAME = COM.TABLE_NAME | ||
+ | AND COM.OWNER =:IN_OWNER | ||
+ | AND COM.TABLE_NAME LIKE:IN_TABLE_NAME || '%' | ||
+ | ) A | ||
+ | , DBA_CONS_COLUMNS B | ||
+ | WHERE B.TABLE_NAME(+) = A.TABLE_NAME | ||
+ | AND B.COLUMN_NAME(+) = A.COLUMN_NAME) X | ||
+ | WHERE X.RN = 1 ORDER BY X.TABLE_NAME, X.COLUMN_ID; </source> | ||
+ | |||
+ | === 일반 사용자 용 === | ||
+ | |||
+ | <source lang="sql"> | ||
+ | SELECT TABLE_NAME | ||
+ | , COLUMN_NAME | ||
+ | , PK | ||
+ | , COLUMN_NAME | ||
+ | , DATA_TYPE || '( ' || NVL (DATA_TYPE_2, DATA_LENGTH) || ' )' DATA_TYPE | ||
+ | , NULLABLE | ||
+ | , COMMENTS | ||
+ | FROM (SELECT A.TABLE_NAME | ||
+ | , A.COLUMN_ID | ||
+ | , B.POSITION PK | ||
+ | , A.COLUMN_NAME | ||
+ | , A.DATA_TYPE | ||
+ | , A.DATA_PRECISION | ||
+ | || DECODE (A.DATA_SCALE, NULL, NULL, ',' || A.DATA_SCALE) DATA_TYPE_2 | ||
+ | , A.DATA_LENGTH | ||
+ | , A.DATA_PRECISION | ||
+ | , A.DATA_SCALE | ||
+ | , A.NULLABLE | ||
+ | , A.COMMENTS | ||
+ | , ROW_NUMBER () | ||
+ | OVER (PARTITION BY A.TABLE_NAME, A.COLUMN_ID | ||
+ | ORDER BY A.COLUMN_ID, B.POSITION) RN | ||
+ | FROM (SELECT COL.TABLE_NAME | ||
+ | , COL.COLUMN_ID | ||
+ | , COL.COLUMN_NAME | ||
+ | , COL.DATA_TYPE | ||
+ | , COL.DATA_LENGTH | ||
+ | , COL.DATA_PRECISION | ||
+ | , COL.DATA_SCALE | ||
+ | , COL.NULLABLE | ||
+ | , COM.COMMENTS | ||
+ | FROM USER_TAB_COLUMNS COL, USER_COL_COMMENTS COM | ||
+ | WHERE COL.COLUMN_NAME = COM.COLUMN_NAME | ||
+ | AND COL.TABLE_NAME = COM.TABLE_NAME | ||
+ | AND COM.TABLE_NAME LIKE :IN_TABLE_NAME || '%') A | ||
+ | , USER_CONS_COLUMNS B | ||
+ | WHERE B.TABLE_NAME(+) = A.TABLE_NAME | ||
+ | AND B.COLUMN_NAME(+) = A.COLUMN_NAME) X | ||
+ | WHERE X.RN = 1 | ||
+ | ORDER BY X.TABLE_NAME, X.COLUMN_ID; | ||
+ | </source> | ||
+ | |||
+ | == 사용자별 오브젝트 수 == | ||
+ | * DBA_OBJECTS | ||
+ | <source lang="sql"> | ||
+ | SELECT OWNER AS "OWNER" | ||
+ | , SUM (DECODE (OBJECT_TYPE, 'TABLE', 1, 0)) AS "TABLE" | ||
+ | , SUM (DECODE (OBJECT_TYPE, 'INDEX', 1, 0)) AS "INDEX" | ||
+ | , SUM (DECODE (OBJECT_TYPE, 'SYNONYM', 1, 0)) AS "SYNONYMS" | ||
+ | , SUM (DECODE (OBJECT_TYPE, 'SEQUENCE', 1, 0)) AS "SEQUENCES" | ||
+ | , SUM (DECODE (OBJECT_TYPE, 'VIEW', 1, 0)) AS "VIEWS" | ||
+ | , SUM (DECODE (OBJECT_TYPE, 'CLUSTER', 1, 0)) AS "CLUSTERS" | ||
+ | , SUM (DECODE (OBJECT_TYPE, 'DATABASE LINK', 1, 0)) AS "DBLINKS" | ||
+ | , SUM (DECODE (OBJECT_TYPE, 'PACKAGE', 1, 0)) AS "PACKAGES" | ||
+ | , SUM (DECODE (OBJECT_TYPE, 'PACKAGE BODY', 1, 0)) AS "PACKAGE_BODY" | ||
+ | , SUM (DECODE (OBJECT_TYPE, 'PROCEDURE', 1, 0)) AS "PROCEDURES" | ||
+ | , SUM (DECODE (OBJECT_TYPE, 'FUNCTION', 1, 0)) AS "FUNCTION" | ||
+ | FROM DBA_OBJECTS | ||
+ | GROUP BY OWNER; | ||
+ | </source> | ||
+ | |||
+ | = 모니터링 = | ||
+ | |||
+ | ---- | ||
+ | |||
+ | |||
+ | == 연결되어 있는 OS 사용자 및 프로그램 조회 == | ||
+ | * V$SESSION | ||
+ | <source lang="sql"> | ||
+ | SELECT SID | ||
+ | , SERIAL# | ||
+ | , OSUSER | ||
+ | , SUBSTRB(USERNAME, 1, 10) AS USER_NAME | ||
+ | , SUBSTRB(PROGRAM, 1, 30) AS PROGRAM_NAME | ||
+ | , STATUS | ||
+ | , TO_CHAR(LOGON_TIME, 'YYYY/MM/DD HH:MI') AS LOGON_TIME | ||
+ | FROM V$SESSION WHERE TYPE!= ‘BACKGROUND’ AND STATUS = ‘ACTIVE’; | ||
+ | </source> | ||
+ | |||
+ | == 1시간 이상 유휴 상태인 세션 == | ||
+ | |||
+ | <source lang="sql"> | ||
+ | SELECT SID | ||
+ | , SERIAL# | ||
+ | , USERNAME | ||
+ | , TRUNC(LAST_CALL_ET / 3600, 2) || ' HR' LAST_CALL_ET | ||
+ | FROM V$SESSION | ||
+ | WHERE LAST_CALL_ET > 3600 | ||
+ | AND USERNAME IS NOT NULL; | ||
+ | </source> | ||
+ | |||
+ | == Active Session 중 Idle Time이 긴 작업 == | ||
+ | * V$SESSION | ||
+ | * V$PROCESS | ||
+ | <source lang="sql"> | ||
+ | SELECT VS.SID || ',' || VS.SERIAL# " SID" | ||
+ | , VP.SPID | ||
+ | , VS.MACHINE | ||
+ | , VS.PROGRAM | ||
+ | , VS.MODULE | ||
+ | , VS.STATUS | ||
+ | , TO_CHAR(VS.LOGON_TIME, 'MM/DD HH24:MI') LOGIN_TIME | ||
+ | , ROUND(VS.LAST_CALL_ET / 60) "IDLE" | ||
+ | FROM V$SESSION VS | ||
+ | , V$PROCESS VP | ||
+ | WHERE VS.STATUS = 'ACTIVE' | ||
+ | AND VS.SID NOT IN (1, 2, 3, 4, 5, 6, 7) | ||
+ | AND VS.PADDR = VP.ADDR | ||
+ | ORDER BY 8; | ||
+ | </source> | ||
+ | |||
+ | == DBUser 별로 Session 정보를 조회 == | ||
+ | <source lang="sql"> | ||
+ | SELECT S.USERNAME | ||
+ | , S.SID | ||
+ | , S.SERIAL# | ||
+ | , P.SPID | ||
+ | , S.OSUSER | ||
+ | , S.MACHINE | ||
+ | , S.PROGRAM | ||
+ | , TO_CHAR(S.LOGON_TIME, 'MM/DD HH24:MI') "LOGON_TIME" | ||
+ | , ROUND(S.LAST_CALL_ET / 60) "IDLE" | ||
+ | FROM V$SESSION S | ||
+ | , V$PROCESS P | ||
+ | WHERE S.PADDR = P.ADDR AND S.USERNAME LIKE UPPER('&DBUSER%') | ||
+ | ORDER BY 9; | ||
+ | </source> | ||
+ | |||
+ | == Session별 사용 명령어 == | ||
+ | * V$SESSION | ||
+ | * V$SESSTAT | ||
+ | * V$STATNAME | ||
+ | * V$PROCESS | ||
+ | |||
+ | <source lang="sql"> | ||
+ | |||
+ | SELECT SESS.SID | ||
+ | |||
,SESS.SERIAL# | ,SESS.SERIAL# | ||
,SUBSTR(SESS.USERNAME, 1, 10) "USER NAME" | ,SUBSTR(SESS.USERNAME, 1, 10) "USER NAME" | ||
467번째 줄: | 821번째 줄: | ||
,PROC.SPID "S.PROC" | ,PROC.SPID "S.PROC" | ||
,TO_CHAR(SESS.LOGON_TIME, 'YYYY-MM-DD HH24:MI') | ,TO_CHAR(SESS.LOGON_TIME, 'YYYY-MM-DD HH24:MI') | ||
− | FROM | + | |
− | + | FROM V$SESSION SESS | |
− | + | , V$SESSTAT STAT | |
− | + | , V$STATNAME NAME | |
− | WHERE | + | , V$PROCESS PROC |
− | AND | + | WHERE SESS.SID = STAT.SID AND STAT.STATISTIC# = NAME.STATISTIC# AND SESS.USERNAME IS NOT NULL AND NAME.NAME = 'RECURSIVE CALLS' AND SESS.PADDR = PROC.ADDR ORDER BY 3, 1, 2; </source> |
− | AND | + | |
− | AND | + | == 사용자 session 2시간 이상 idle 상태가 지속되는 session kill == |
− | AND | + | * V$SESSION |
− | ORDER BY | + | * V$PROCESS |
− | + | <source lang="sql"> | |
− | + | SET PAGESIZE 0 SPOOL KILLIDLE3.SQL | |
− | -- | + | |
− | + | SELECT DISTINCT '!KILL -9 ' || B.SPID, 'ALTER SYSTEM KILL SESSION '''|| A.SID || ',' || A.SERIAL# || ''';' | |
− | + | FROM V$SESSION A | |
− | SELECT | + | , V$PROCESS B |
− | FROM | + | WHERE A.PADDR IN (SELECT S.PADDR |
− | + | FROM V$SESSION S | |
− | WHERE | + | WHERE STATUS = 'INACTIVE' |
− | + | GROUP BY S.PADDR | |
− | + | HAVING MIN(ROUND(LAST_CALL_ET / 60)) > 120) | |
− | -- | + | AND A.PADDR = B.ADDR |
− | + | AND A.STATUS = 'INACTIVE'; | |
− | -- 오라클 사용자에서 사용하는 패키지를 보여는 방법 | + | |
− | ---- :IN_OWNER : 오라클 사용자 | + | SPOOL OFF |
− | ---- :IN_OBJECT_NAME : 패키지 이름 | + | </source> |
− | + | ||
− | SELECT | + | == Oracle Process의 정보 == |
− | FROM | + | * V$SESSION |
− | WHERE | + | * V$PROCESS |
− | AND | + | * SYS.V_$SESS_IO |
− | AND | + | <source lang="sql"> |
− | + | SELECT S.STATUS "STATUS" | |
− | + | ,S.SERIAL# "SERIAL#" | |
+ | ,S.TYPE "TYPE" | ||
+ | ,S.USERNAME "DB USER" | ||
+ | ,S.OSUSER "CLIENT USER" | ||
+ | ,S.SERVER "SERVER" | ||
+ | ,S.MACHINE "MACHINE" | ||
+ | ,S.MODULE "MODULE" | ||
+ | ,S.TERMINAL "TERMINAL" | ||
+ | ,S.PROGRAM "PROGRAM" | ||
+ | ,P.PROGRAM "O.S. PROGRAM" | ||
+ | ,S.LOGON_TIME "CONNECT TIME" | ||
+ | ,LOCKWAIT "LOCK WAIT" | ||
+ | ,SI.PHYSICAL_READS "PHYSICAL READS" | ||
+ | ,SI.BLOCK_GETS "BLOCK GETS" | ||
+ | ,SI.CONSISTENT_GETS "CONSISTENT GETS" | ||
+ | ,SI.BLOCK_CHANGES "BLOCK CHANGES" | ||
+ | ,SI.CONSISTENT_CHANGES "CONSISTENT CHANGES" | ||
+ | ,S.PROCESS "PROCESS" | ||
+ | ,P.SPID | ||
+ | ,P.PID | ||
+ | ,S.SERIAL# | ||
+ | ,SI.SID | ||
+ | ,S.SQL_ADDRESS "ADDRESS" | ||
+ | ,S.SQL_HASH_VALUE "SQL HASH" | ||
+ | ,S.ACTION | ||
+ | FROM V$SESSION S | ||
+ | , V$PROCESS P | ||
+ | , SYS.V_$SESS_IO SI | ||
+ | WHERE S.PADDR = P.ADDR(+) | ||
+ | AND SI.SID(+) = S.SID | ||
+ | AND S.USERNAME IS NOT NULL | ||
+ | AND NVL(S.OSUSER, 'X') <> 'SYSTEM' | ||
+ | AND S.TYPE <> 'BACKGROUND' | ||
+ | ORDER BY 3; | ||
+ | </source> | ||
+ | |||
+ | == 오브젝트에 접속되어 있는 프로그램 조회 == | ||
+ | * V$SESSION | ||
+ | * V$ACCESS | ||
+ | <source lang="sql"> | ||
+ | SELECT SUBSTR(B.OBJECT, 1, 15) AS OBJECT, SUBSTR(A.PROGRAM, 1, 15) AS PROGRAM, COUNT(*) AS CNT | ||
+ | FROM V$SESSION A | ||
+ | ,V$ACCESS B | ||
+ | WHERE A.SID = B.SID | ||
+ | AND B.OWNER NOT IN ('SYS') | ||
+ | AND A.TYPE!= 'BACKGROUND' | ||
+ | AND B.OBJECT LIKE UPPER('&OBJECT_NAME') || '%' GROUP BY B.OBJECT, SUBSTR(A.PROGRAM, 1, 15); </source> | ||
+ | |||
+ | == 롤백 세그먼트 경합 조회 == | ||
+ | * V$ROLLSTAT | ||
+ | * V$ROLLNAME | ||
+ | <source lang="sql"> | ||
+ | SELECT NAME T0 | ||
+ | , GETS T1 ,WAITS T2 | ||
+ | , TO_CHAR(TRUNC(WAITS / GETS * 100, 2), 099.99) || '%' T3 | ||
+ | , TO_CHAR(ROUND(RSSIZE / 1024)) T4 | ||
+ | , SHRINKS T5 | ||
+ | , EXTENDS T6 | ||
+ | FROM V$ROLLSTAT | ||
+ | , V$ROLLNAME | ||
+ | WHERE V$ROLLSTAT.USN = V$ROLLNAME.USN; | ||
+ | </source> | ||
+ | |||
+ | == CPU를 많이 사용하는 세션의 식별 == | ||
+ | * V$SESSTAT | ||
+ | * V$STATNAME | ||
+ | * V$SESSION | ||
+ | <source lang="sql"> | ||
+ | SELECT A.SID | ||
+ | , C.SERIAL# | ||
+ | , A.VALUE | ||
+ | , C.USERNAME | ||
+ | , C.STATUS | ||
+ | , C.PROGRAM | ||
+ | FROM V$SESSTAT A | ||
+ | , V$STATNAME B | ||
+ | , V$SESSION C | ||
+ | WHERE A.STATISTIC# = B.STATISTIC# | ||
+ | AND A.SID = C.SID | ||
+ | AND B.NAME = 'CPU used by this session' | ||
+ | AND A.VALUE > 0 ORDER BY A.VALUE DESC; | ||
+ | </source> | ||
+ | |||
+ | == Disk Read 가 많은 SQL문 찾기 == | ||
+ | * V$SQLAREA | ||
+ | <source lang="sql"> | ||
+ | SELECT DISK_READS, SQL_TEXT | ||
+ | FROM V$SQLAREA | ||
+ | WHERE DISK_READS > 100 | ||
+ | ORDER BY DISK_READS DESC; </source> | ||
+ | |||
+ | == Rollback Segment를 사용하고 있는 SQL문 조회 == | ||
+ | * V$ROLLNAME | ||
+ | * V$ROLLSTAT | ||
+ | * V$SESSION | ||
+ | * V$SQLTEXT | ||
+ | * V$TRANSACTION | ||
+ | <source lang="sql"> | ||
+ | SELECT A.NAME | ||
+ | , B.XACTS | ||
+ | , C.SID | ||
+ | , C.SERIAL# | ||
+ | , C.USERNAME | ||
+ | , D.SQL_TEXT | ||
+ | FROM V$ROLLNAME A | ||
+ | , V$ROLLSTAT B | ||
+ | , V$SESSION C | ||
+ | , V$SQLTEXT D | ||
+ | , V$TRANSACTION E | ||
+ | WHERE A.USN = B.USN | ||
+ | AND B.USN = E.XIDUSN | ||
+ | AND C.TADDR = E.ADDR | ||
+ | AND C.SQL_ADDRESS = D.ADDRESS | ||
+ | AND C.SQL_HASH_VALUE = D.HASH_VALUE | ||
+ | ORDER BY A.NAME, C.SID, D.PIECE; | ||
+ | </source> | ||
+ | |||
+ | == 오래도록 수행되는 Full Table Scan를 모니터링 == | ||
+ | * V$SESSION_LONGOPS | ||
+ | <source lang="sql"> | ||
+ | SELECT SID | ||
+ | , SERIAL# | ||
+ | , OPNAME | ||
+ | , TO_CHAR(START_TIME, 'HH24:MI:SS') AS "START" | ||
+ | , (SOFAR / TOTALWORK) * 100 AS "PERCENT_COMPLETE" | ||
+ | FROM V$SESSION_LONGOPS; | ||
+ | </source> | ||
+ | |||
+ | == System 테이블스페이스에 비시스템 세그먼트 조회 == | ||
+ | * DBA_SEGMENTS | ||
+ | <source lang="sql"> | ||
+ | SELECT OWNER | ||
+ | , SEGMENT_NAME | ||
+ | , SEGMENT_TYPE | ||
+ | , TABLESPACE_NAME | ||
+ | FROM DBA_SEGMENTS | ||
+ | WHERE OWNER NOT IN ('SYS', 'SYSTEM') | ||
+ | AND TABLESPACE_NAME = 'SYSTEM'; | ||
+ | </source> | ||
+ | |||
+ | == 인덱스의 Delete Space 조회 == | ||
+ | * INDEX_STATS | ||
+ | <source lang="sql"> | ||
+ | --Delete Space% 값이 20% 가 넘으면, 그 인덱스는 다시 작성하는 것이 좋다. | ||
+ | SELECT NAME | ||
+ | , LF_ROWS | ||
+ | , DEL_LF_ROWS | ||
+ | , (DEL_LF_ROWS / LF_ROWS) * 100 AS "DELETE SPACE%" | ||
+ | FROM INDEX_STATS WHERE NAME = UPPER('&INDEX_NAME'); | ||
+ | </source> | ||
+ | |||
+ | == 딕셔너리/뷰 정보 조회 == | ||
+ | * DICTIONARY | ||
+ | * DICT_COLUMNS | ||
+ | <source lang="sql"> | ||
+ | SELECT A.TABLE_NAME | ||
+ | , B.COLUMN_NAME | ||
+ | FROM DICTIONARY A | ||
+ | , DICT_COLUMNS B | ||
+ | WHERE A.TABLE_NAME = B.TABLE_NAME; | ||
+ | </source> | ||
+ | |||
+ | = 프로시져/패키지 = | ||
+ | |||
+ | ---- | ||
+ | |||
+ | |||
+ | == 패키지 검색 1 - 특정 오라클 사용자 중에서 패키지 소스와 일치하는 텍스트를 조회 == | ||
+ | |||
+ | <source lang="sql"> -- 오라클 사용자에서 사용하는 패키지를 보여는 방법 | ||
+ | |||
+ | ---- | ||
+ | :IN_OWNER: 오라클 사용자 | ||
+ | |||
+ | ---- | ||
+ | :IN_OBJECT_NAME: 패키지 이름 | ||
+ | SELECT OBJECT_NAME | ||
+ | FROM DBA_OBJECTS | ||
+ | WHERE OWNER =:IN_OWNER | ||
+ | AND OBJECT_NAME LIKE '%' ||:IN_OBJECT_NAME || '%' | ||
+ | AND OBJECT_TYPE = 'PACKAGE'; </source> | ||
+ | |||
-- 오라클 사용자의 패키지 중에서 텍스트 내용을 검색하여 패키지 정보를 추출 | -- 오라클 사용자의 패키지 중에서 텍스트 내용을 검색하여 패키지 정보를 추출 | ||
− | ---- :IN_OWNER : 오라클 사용자 | + | |
− | ---- :IN_TEXT | + | ---- |
− | + | :IN_OWNER: 오라클 사용자 | |
− | SELECT | + | |
− | + | ---- | |
− | + | :IN_TEXT : 패키지소 스에서 검색할 텍스트 | |
− | FROM | + | |
− | WHERE | + | <source lang="sql"> SELECT NAME -- 패키지 이름 , LINE -- 라인 수 , TEXT -- 패키지 BODY에 수정된 내용 FROM DBA_SOURCE WHERE OWNER =:IN_OWNER AND TEXT LIKE '%' ||:IN_TEXT || '%'; </source> |
− | AND | + | |
− | + | == 특정 사용자의 패키지 내에서 주석처리가 되지 않은 항목을 조회 == | |
− | + | ||
− | |||
− | |||
− | |||
− | |||
/* | /* | ||
+ | |||
오라클 사용자가 사용하는 패키지의 BODY 소스를 검색하여 | 오라클 사용자가 사용하는 패키지의 BODY 소스를 검색하여 | ||
주식이 없거나 패턴이 맞지 않는 항목을 조회 한다. | 주식이 없거나 패턴이 맞지 않는 항목을 조회 한다. | ||
− | */ | + | |
− | + | */ | |
− | SELECT | + | <source lang="sql"> SELECT * FROM DBA_OBJECTS B WHERE B.OWNER =:IN_OWNER AND B.OBJECT_TYPE = 'PACKAGE BODY' AND B.STATUS <> 'INVALID' -- VALID 상태만 조회, 만약 INVALID 된다고 해도 패키지를 수행하는 순간 컴파일 됨. AND NOT EXISTS |
− | FROM | + | |
− | WHERE | ||
− | AND | ||
− | AND | ||
− | AND | ||
(SELECT 1 | (SELECT 1 | ||
FROM DBA_SOURCE A | FROM DBA_SOURCE A | ||
535번째 줄: | 1,063번째 줄: | ||
AND A.LINE <= 5 | AND A.LINE <= 5 | ||
AND A.TEXT LIKE '%NAME%'); | AND A.TEXT LIKE '%NAME%'); | ||
− | + | ||
− | + | </source> | |
− | + | ||
− | + | ||
− | + | == 다중 UPDATE 쿼리 == | |
− | + | ||
− | + | <source lang="sql"> | |
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/* | /* | ||
+ | |||
BYPASS_UJVC 힌트를 이용하면 특정 뷰를 만들어서 컬럼 대 컬럼을 대입 할 수 있습니다. | BYPASS_UJVC 힌트를 이용하면 특정 뷰를 만들어서 컬럼 대 컬럼을 대입 할 수 있습니다. | ||
아래 쿼리는 메타정보관리용 유저로서 코멘트의 내용 중에서 정규표현식을 이용하여 관련 데이터를 조작 하는 방법 입니다. | 아래 쿼리는 메타정보관리용 유저로서 코멘트의 내용 중에서 정규표현식을 이용하여 관련 데이터를 조작 하는 방법 입니다. | ||
− | */ | + | |
− | + | */ | |
+ | |||
UPDATE /*+ BYPASS_UJVC */ | UPDATE /*+ BYPASS_UJVC */ | ||
+ | |||
( SELECT X.* | ( SELECT X.* | ||
,CASE | ,CASE | ||
715번째 줄: | 1,093번째 줄: | ||
,A.GRP_CD A_GRP_CD | ,A.GRP_CD A_GRP_CD | ||
,A.UNIT A_UNIT | ,A.UNIT A_UNIT | ||
− | ,REGEXP_INSTR(COLUMN_DESC, '단위\:') UNIT_INSTR | + | ,REGEXP_INSTR(COLUMN_DESC, '단위\:') UNIT_INSTR FROM DBA_MYCOL A WHERE A.SERVER =:IN_SERVER AND A.OWNER =:IN_OWNER |
− | + | AND A.TABLE_NAME =:IN_TABLE_NAME) X) | |
− | + | ||
− | + | SET A_UNIT = B_UNIT | |
− | AND A.TABLE_NAME = :IN_TABLE_NAME) X) | + | |
− | SET | ||
UPDATE_DT = SYSDATE; | UPDATE_DT = SYSDATE; | ||
− | + | ||
− | + | </source> | |
− | + | ||
− | + | ||
− | + | == CPU를 많이 사용하는 세션의 식별(SQL TEXT 조회) == | |
− | + | ||
− | + | <source lang="sql"> SELECT A.* | |
− | + | ||
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− | SELECT | ||
,(SELECT SS.SQL_TEXT | ,(SELECT SS.SQL_TEXT | ||
FROM V$SQLAREA SS | FROM V$SQLAREA SS | ||
775번째 줄: | 1,112번째 줄: | ||
AND ROWNUM <= 1 | AND ROWNUM <= 1 | ||
) AS SQL_TEST | ) AS SQL_TEST | ||
− | FROM | + | |
+ | FROM ( | ||
+ | |||
SELECT A.SID | SELECT A.SID | ||
,C.SERIAL# | ,C.SERIAL# | ||
794번째 줄: | 1,133번째 줄: | ||
AND C.USERNAME IS NOT NULL | AND C.USERNAME IS NOT NULL | ||
) A | ) A | ||
− | WHERE | + | |
− | + | WHERE A.RN <= 10; </source> | |
− | + | ||
− | + | ||
− | + | == 현재 세션에서 10초이상 걸리는 쿼리 조회 (SELECT절) == | |
− | + | <source lang="sql"> | |
− | + | SELECT ABS(SYSDATE - A.LAST_LOAD_TIME) * 24 * 60 * 60 AS SEC_TIEM, A.* | |
− | + | FROM V$SQLAREA A | |
− | + | , V$SESSION B | |
− | + | WHERE A.SQL_TEXT LIKE '%SELECT%' | |
− | + | AND A.ADDRESS = B.SQL_ADDRESS | |
− | + | AND B.STATUS = 'ACTIVE' | |
− | + | AND A.ELAPSED_TIME >= 10 * 1000000 -- 실행계획에서 10초 이상 걸리는 쿼리를 조회(실제 걸리는 시간은 아님.) | |
− | + | AND A.PARSING_SCHEMA_NAME NOT IN ('SYS', 'SYSTEM', 'SYSMAN') | |
− | + | AND B.USERNAME IS NOT NULL; | |
− | + | </source> | |
− | + | ||
− | + | == 현재 세션에서 PGA, UGA, CPU 사용량 세션별로 조회하는 쿼리 == | |
− | + | ||
− | + | <source lang="sql"> | |
− | + | ||
− | + | SELECT B.USERNAME | |
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | SELECT | ||
− | FROM | ||
− | |||
− | WHERE | ||
− | AND | ||
− | AND | ||
− | AND | ||
− | AND | ||
− | AND | ||
− | |||
− | |||
− | |||
− | |||
− | |||
− | SELECT | ||
,A.SID | ,A.SID | ||
,A.PGA_USAGE | ,A.PGA_USAGE | ||
844번째 줄: | 1,162번째 줄: | ||
,B.PROGRAM | ,B.PROGRAM | ||
,B.MODULE | ,B.MODULE | ||
− | FROM | + | FROM (SELECT B.SID |
,MAX(DECODE(C.NAME, 'session pga memory', TRUNC(B.VALUE / 1024 / 1024) || 'MB', 0)) AS PGA_USAGE | ,MAX(DECODE(C.NAME, 'session pga memory', TRUNC(B.VALUE / 1024 / 1024) || 'MB', 0)) AS PGA_USAGE | ||
,MAX(DECODE(C.NAME, 'session uga memory', TRUNC(B.VALUE / 1024 / 1024) || 'MB', 0)) AS UGA_USAGE | ,MAX(DECODE(C.NAME, 'session uga memory', TRUNC(B.VALUE / 1024 / 1024) || 'MB', 0)) AS UGA_USAGE | ||
853번째 줄: | 1,171번째 줄: | ||
GROUP BY B.SID) A | GROUP BY B.SID) A | ||
,V$SESSION B | ,V$SESSION B | ||
− | WHERE | + | WHERE B.SID = A.SID AND B.STATUS = 'ACTIVE' AND B.USERNAME IS NOT NULL; </source> |
− | AND | + | |
− | AND | + | == 상호 DB간에 컬럼 이름 비교 == |
+ | |||
+ | <source lang="sql"> | ||
+ | /* | ||
+ | 양쪽 DB에서 사용하는 테이블 중에서 컬럼 이름 다른 항목을 찾는다. | ||
+ | */ | ||
+ | |||
+ | SELECT A.TABLE_NAME | ||
+ | ,A.COLUMN_NAME | ||
+ | ,A.COLUMN_ID | ||
+ | ,A.DATA_TYPE || '(' || A.DATA_LENGTH || ')' DATA_TYPE | ||
+ | FROM USER_TAB_COLUMNS@LINK_ESTDB A WHERE A.TABLE_NAME =:IN_TABLE_NAME AND NOT EXISTS | ||
+ | (SELECT 'X' | ||
+ | FROM USER_TAB_COLUMNS B | ||
+ | WHERE B.TABLE_NAME = A.TABLE_NAME | ||
+ | AND B.COLUMN_NAME = A.COLUMN_NAME); | ||
+ | </source> | ||
+ | <source lang="sql"> | ||
+ | SELECT A.TABLE_NAME, A.COLUMN_NAME, A.COLUMN_ID | ||
+ | FROM USER_TAB_COLUMNS@LINK_ESTDB A | ||
+ | WHERE A.TABLE_NAME =:IN_TABLE_NAME | ||
+ | MINUS | ||
+ | SELECT A.TABLE_NAME, A.COLUMN_NAME, A.COLUMN_ID | ||
+ | FROM USER_TAB_COLUMNS A | ||
+ | WHERE A.TABLE_NAME =:IN_TABLE_NAME | ||
+ | </source> | ||
+ | |||
+ | == DB Link 보기 == | ||
+ | |||
+ | <source lang="sql"> | ||
+ | SELECT SUBSTRB (U.NAME, 1, 10) AS OWNER | ||
+ | , SUBSTRB (L.NAME, 1, 20) AS DB_LINK | ||
+ | , SUBSTRB (L.HOST, 1, 10) AS HOST | ||
+ | , SUBSTRB (L.USERID || '/' || L.PASSWORD, 1, 15) AS USERPASS | ||
+ | FROM SYS.LINK$ L, SYS.USER$ U | ||
+ | WHERE L.OWNER# = U.USER#; | ||
+ | </source> | ||
+ | |||
+ | == View의 정의 내역 보기 == | ||
+ | |||
+ | <source lang="sql"> SET LONG 100000 | ||
+ | |||
+ | SELECT TEXT FROM USER_VIEWS WHERE VIEW_NAME LIKE UPPER('&뷰_이름'); </source> | ||
+ | |||
+ | |||
+ | == 동일(중복) 자료 삭제 방법 == | ||
+ | |||
+ | # ROW_NUMBER() 이용 | ||
+ | <source lang=sql> | ||
+ | DELETE FROM 테이블명 | ||
+ | WHERE ROWID IN ( | ||
+ | SELECT ROWID | ||
+ | FROM ( | ||
+ | SELECT * | ||
+ | FROM ( | ||
+ | SELECT ROW_NUMBER() OVER(PARTITION BY 컬럼명 ORDER BY 컬럼명) AS num | ||
+ | FROM 테이블명 | ||
+ | ) | ||
+ | WHERE num > 1 -- num의 값이 1초과인 데이터들만 삭제 | ||
+ | ) | ||
+ | ); | ||
+ | </source> | ||
+ | : | ||
+ | # MIN(ROWID) 보다 큰건은 삭제(신규 추가된건 삭제) | ||
+ | <source lang=sql> | ||
+ | DELETE FROM 테이블명 A | ||
+ | WHERE ROWID > (SELECT MIN(ROWID) FROM 테이블명 B | ||
+ | WHERE A.컬럼 = B.컬럼 | ||
+ | ); | ||
+ | </source> | ||
+ | : | ||
+ | #MAX(ROWID) 보다 작은건 삭제 (처음 추가된건 제) | ||
+ | <source lang=sql> | ||
+ | DELETE FROM 테이블명 A | ||
+ | WHERE ROWID < (SELECT MAX(ROWID) FROM 테이블명 B | ||
+ | WHERE A.컬럼 = B.컬럼); | ||
+ | </source> | ||
+ | |||
+ | |||
+ | [[Category:oracle]] |
2024년 3월 31일 (일) 01:17 기준 최신판
thumb_up 추천메뉴 바로가기
- DBA { Oracle DBA 명령어 > DBA 초급 과정 > DBA 고급 과정 }
- 튜닝 { 오라클 튜닝 목록 }
- 모델링 { 데이터 모델링 가이드 }
목차
- 1 인덱스 정보
- 2 락 정보
- 3 테이블 정보
- 4 모니터링
- 4.1 연결되어 있는 OS 사용자 및 프로그램 조회
- 4.2 1시간 이상 유휴 상태인 세션
- 4.3 Active Session 중 Idle Time이 긴 작업
- 4.4 DBUser 별로 Session 정보를 조회
- 4.5 Session별 사용 명령어
- 4.6 사용자 session 2시간 이상 idle 상태가 지속되는 session kill
- 4.7 Oracle Process의 정보
- 4.8 오브젝트에 접속되어 있는 프로그램 조회
- 4.9 롤백 세그먼트 경합 조회
- 4.10 CPU를 많이 사용하는 세션의 식별
- 4.11 Disk Read 가 많은 SQL문 찾기
- 4.12 Rollback Segment를 사용하고 있는 SQL문 조회
- 4.13 오래도록 수행되는 Full Table Scan를 모니터링
- 4.14 System 테이블스페이스에 비시스템 세그먼트 조회
- 4.15 인덱스의 Delete Space 조회
- 4.16 딕셔너리/뷰 정보 조회
- 5 프로시져/패키지
- 5.1 패키지 검색 1 - 특정 오라클 사용자 중에서 패키지 소스와 일치하는 텍스트를 조회
- 5.2 특정 사용자의 패키지 내에서 주석처리가 되지 않은 항목을 조회
- 5.3 다중 UPDATE 쿼리
- 5.4 CPU를 많이 사용하는 세션의 식별(SQL TEXT 조회)
- 5.5 현재 세션에서 10초이상 걸리는 쿼리 조회 (SELECT절)
- 5.6 현재 세션에서 PGA, UGA, CPU 사용량 세션별로 조회하는 쿼리
- 5.7 상호 DB간에 컬럼 이름 비교
- 5.8 DB Link 보기
- 5.9 View의 정의 내역 보기
- 5.10 동일(중복) 자료 삭제 방법
1 인덱스 정보[편집]
1.1 INDEX 보기[편집]
- USER_INDEXES
- USER_IND_COLUMNS
SELECT A.INDEX_NAME
, A.UNIQUENESS
, TO_CHAR(COLUMN_POSITION, '999') AS POS
, SUBSTRB(COLUMN_NAME, 1, 33) AS COLUMN_NAME
FROM USER_INDEXES A
, USER_IND_COLUMNS B
WHERE A.INDEX_NAME = B.INDEX_NAME
AND A.TABLE_OWNER = UPPER('E_LUCIS')
AND A.TABLE_NAME = UPPER('&테이블명') ORDER BY 1, 3;
1.2 전체 INDEX 보기[편집]
- DBA_INDEXES
- DBA_IND_COLUMNS
SELECT SUBSTRB(A.TABLE_NAME, 1, 22) AS TABLE_NAME
, SUBSTRB(A.INDEX_NAME, 1, 23) AS INDEX_NAME
, SUBSTRB(A.UNIQUENESS, 1, 7) AS UNIQUE
, TO_CHAR(COLUMN_POSITION, '999') AS POS
, SUBSTRB(COLUMN_NAME, 1, 20) AS COLUMN_NAME
FROM DBA_INDEXES A
, DBA_IND_COLUMNS B
WHERE A.INDEX_NAME = B.INDEX_NAME
AND A.TABLE_OWNER = B.TABLE_OWNER
AND A.TABLE_OWNER = 'E_LUCIS'
ORDER BY 1, 2, 3;
1.3 특정 테이블의 인덱스 확인[편집]
- ALL_IND_COLUMNS
/* 인덱스를 확인 하고자 할때 사용하는 쿼리 */
SELECT C.TABLE_NAME
, C.INDEX_NAME
, C.COLUMN_NAME
, C.COLUMN_POSITION
, T.NUM_ROWS
FROM ALL_IND_COLUMNS C
, (SELECT TABLE_NAME, NUM_ROWS
FROM ALL_TABLES
WHERE OWNER = 'ESTDBA'
AND TABLE_NAME IN (SELECT TABLE_NAME
FROM USER_TABLES
WHERE TABLE_NAME LIKE:IN_TABLE_NAME || '%'
)
AND NUM_ROWS > 0
) T
WHERE C.TABLE_NAME = T.TABLE_NAME
ORDER BY T.NUM_ROWS DESC, C.TABLE_NAME, C.INDEX_NAME, C.COLUMN_POSITION;
1.4 인덱스에 대한 컬럼 조회[편집]
- USER_IND_COLUMNS
SELECT TABLE_NAME
, INDEX_NAME
, COLUMN_POSITION
, COLUMN_NAME
FROM USER_IND_COLUMNS
ORDER BY TABLE_NAME, INDEX_NAME, COLUMN_POSITION;
1.5 PRIMARY KEY 재생성 방법[편집]
--- PRIMARY KEY DROP
ALTER TABLE EMP
DROP PRIMARY KEY;
-- PRIMARY KEY 생성
ALTER TABLE EMP
ADD CONSTRAINT EMP_PK
PRIMARY KEY(EMPNO)
USING INDEX STORAGE(INITIAL 1M NEXT 1M PCTINCREASE 0)
TABLESPACE USERS;
1.6 PRIMARY KEY를 REFERENCE 하는 FOREIGN KEY 찾기[편집]
- DBA_OBJECTS
- CDEF$
- CON$
SELECT C.NAME CONSTRAINT_NAME
FROM DBA_OBJECTS A
, CDEF$ B
, CON$ C
WHERE A.OBJECT_NAME = UPPER('&테이블명')
AND A.OBJECT_ID = B.ROBJ#
AND B.CON# = C.CON#;
1.7 중복인덱스 체크[편집]
- SYS.ICOL$
- SYS.IND$
- SYS.OBJ$
- SYS.USER$
SELECT O1.NAME || '.' || N1.NAME REDUNDANT_INDEX
, O2.NAME || '.' || N2.NAME SUFFICIENT_INDEX
FROM SYS.ICOL$ IC1
, SYS.ICOL$ IC2
, SYS.IND$ I1
, SYS.OBJ$ N1
, SYS.OBJ$ N2
, SYS.USER$ O1
, SYS.USER$ O2
WHERE IC1.POS# = 1
AND IC2.BO# = IC1.BO#
AND IC2.OBJ# != IC1.OBJ#
AND IC2.POS# = 1
AND IC2.INTCOL# = IC1.INTCOL#
AND I1.OBJ# = IC1.OBJ#
AND BITAND (I1.PROPERTY, 1) = 0
AND (SELECT MAX (POS#) * (MAX (POS#) + 1) / 2
FROM SYS.ICOL$
WHERE OBJ# = IC1.OBJ#) =
(SELECT SUM (XC1.POS#)
FROM SYS.ICOL$ XC1, SYS.ICOL$ XC2
WHERE XC1.OBJ# = IC1.OBJ#
AND XC2.OBJ# = IC2.OBJ#
AND XC1.POS# = XC2.POS#
AND XC1.INTCOL# = XC2.INTCOL#)
AND N1.OBJ# = IC1.OBJ#
AND N2.OBJ# = IC2.OBJ#
AND O1.USER# = N1.OWNER#
AND O2.USER# = N2.OWNER#;
또는
select /*+ rule */
a.table_owner,
a.table_name,
a.index_owner,
a.index_name,
column_name_list,
column_name_list_dup,
dup duplicate_indexes,
i.uniqueness,
i.partitioned,
i.leaf_blocks,
i.distinct_keys,
i.num_rows,
i.clustering_factor
from
(
select
table_owner,
table_name,
index_owner,
index_name,
column_name_list_dup,
dup,
max(dup) OVER
(partition by table_owner, table_name, index_name) dup_mx
from
(
select
table_owner,
table_name,
index_owner,
index_name,
substr(SYS_CONNECT_BY_PATH(column_name, ','),2)
column_name_list_dup,
dup
from
(
select
index_owner,
index_name,
table_owner,
table_name,
column_name,
count(1) OVER
(partition by
index_owner,
index_name) cnt,
ROW_NUMBER () OVER
(partition by
index_owner,
index_name
order by column_position) as seq,
count(1) OVER
(partition by
table_owner,
table_name,
column_name,
column_position) as dup
from
sys.dba_ind_columns
where
index_owner not in ('SYS', 'SYSTEM'))
where
dup!=1
start with seq=1
connect by prior seq+1=seq
and prior index_owner=index_owner
and prior index_name=index_name
)) a,
(
select
table_owner,
table_name,
index_owner,
index_name,
substr(SYS_CONNECT_BY_PATH(column_name, ','),2) column_name_list
from
(
select index_owner, index_name, table_owner, table_name, column_name,
count(1) OVER ( partition by index_owner, index_name) cnt,
ROW_NUMBER () OVER ( partition by index_owner, index_name order by column_position) as seq
from sys.dba_ind_columns
where index_owner not in ('SYS', 'SYSTEM'))
where seq=cnt
start with seq=1
connect by prior seq+1=seq
and prior index_owner=index_owner
and prior index_name=index_name
) b, dba_indexes i
where
a.dup=a.dup_mx
and a.index_owner=b.index_owner
and a.index_name=b.index_name
and a.index_owner=i.owner
and a.index_name=i.index_name
order by
a.table_owner, a.table_name, column_name_list_dup;
1.8 테이블의 PK를 구성하는 컬럼 조회[편집]
- USER_TABLES
- USER_CONSTRAINTS
- USER_CONS_COLUMNS
SELECT A.TABLE_NAME, B.CONSTRAINT_NAME, C.COLUMN_NAME
FROM USER_TABLES A
, USER_CONSTRAINTS B
, USER_CONS_COLUMNS C
WHERE A.TABLE_NAME = B.TABLE_NAME
AND B.CONSTRAINT_NAME = C.CONSTRAINT_NAME
AND B.CONSTRAINT_TYPE = 'P';
1.9 Index가 없는 Table 조회[편집]
- DBA_TABLES
- DBA_INDEXES
SELECT OWNER, TABLE_NAME
FROM (SELECT OWNER
, TABLE_NAME
FROM DBA_TABLES
MINUS
SELECT TABLE_OWNER
, TABLE_NAME
FROM DBA_INDEXES
)
WHERE OWNER NOT IN ('SYS', 'SYSTEM') ORDER BY OWNER, TABLE_NAME;
2 락 정보[편집]
2.1 테이블에 LOCK이 걸렸는지를 보기[편집]
- V$SESSION
- V$LOCK
- DBA_OBJECTS
SELECT A.SID
, A.SERIAL#
, SUBSTRB(A.USERNAME, 1, 16) AS USERNAME
, SUBSTRB(A.MACHINE, 1, 30) AS MACHINE
, A.TERMINAL
, A.OSUSER
, A.PROGRAM
, SUBSTRB(TO_CHAR(A.LOGON_TIME, 'MM/DD HH24:MI:SS'), 1, 14) AS LOGON_TIME
, SUBSTRB(C.OBJECT_NAME, 1, 58) AS OBJECT_NAME
FROM V$SESSION A
, V$LOCK B
, DBA_OBJECTS C
WHERE A.SID = B.SID AND B.ID1 = C.OBJECT_ID
AND B.TYPE = 'TM'
AND C.OBJECT_NAME LIKE UPPER('&테이블명');
2.2 Lock을 잡고있는 세션과 기다리는 세션 조회[편집]
- V$SESSION
- V$LOCK
- DBA_OBJECTS
SELECT DECODE(B.LOCKWAIT, NULL, ' ', 'w') AS WW
, B.SID
, B.SERIAL# AS SER#
, SUBSTR(B.MACHINE, 1, 10) AS MACHINE
, SUBSTR(B.PROGRAM, 1, 15) AS PROGRAM
, SUBSTR(A.OBJECT_NAME, 1, 17) AS OBJ_NAME
, SUBSTR(B.STATUS, 1, 1) AS S
, DECODE(B.COMMAND, 0, NULL, 2, 'INSERT', 6, 'UPDATE', 7, 'DELETE', B.COMMAND) AS SQLCMD
, B.PROCESS AS PGM_PSS
FROM V$SESSION B
, ( SELECT A.SID, DECODE(B.OWNER, NULL, A.TYPE || '..ing', B.OWNER || '.' || B.OBJECT_NAME) AS OBJECT_NAME
FROM V$LOCK A
, DBA_OBJECTS B
WHERE A.ID1 = B.OBJECT_ID(+)
GROUP BY A.SID, DECODE(B.OWNER, NULL, A.TYPE || '..ing', B.OWNER || '.' || B.OBJECT_NAME)
) A
WHERE B.SID = A.SID
AND B.TADDR IS NOT NULL;
2.3 테이블에 걸린 비정상적 LOCK 풀기[편집]
ALTER SYSTEM KILL SESSION '&SID,&SERIAL';
- RAC
ALTER SYSTEM KILL SESSION '&SID,&SERIAL,@1';
2.4 작업 중인 데이터베이스 트랜잭션 조회[편집]
- V$SESSION
- V$TRANSACTION
- DBA_ROLLBACK_SEGS
SELECT S.SID
, S.SERIAL#
, S.STATUS
, S.OSUSER
, S.USERNAME
, T.STATUS
, T.START_TIME
FROM V$SESSION S
, V$TRANSACTION T
, DBA_ROLLBACK_SEGS R
WHERE S.TADDR = T.ADDR
AND T.XIDUSN = R.SEGMENT_ID;
2.5 열려 있는 커서 조회[편집]
- V$SESSION
- V$OPEN_CURSOR
SELECT A.SID
, A.OSUSER
, COUNT(B.SID) AS "CURSOR"
, A.PROGRAM
, A.STATUS
FROM V$SESSION A
, V$OPEN_CURSOR B
WHERE A.SID = B.SID(+)
GROUP BY A.SID, A.OSUSER, A.PROGRAM, A.STATUS;
2.6 LOCK 발생 유형 조회[편집]
- V$LOCK
SELECT A.SID
,DECODE(A.TYPE
,'MR', 'MEDIA RECOVERY'
,'RT', 'REDO THREAD'
,'UN', 'USER_NAME'
,'TX', 'TRANSACTION'
,'TM', 'DML'
,'UL', 'PL/SQL USER LOCK'
,'DX', 'DISTRIBUTED XACTION'
,'CF', 'CONTROL FILE'
,'IS', 'INSTANCE STATE'
,'FS', 'FILE SET'
,'IR', 'INSTANCE RECOVERY'
,'FS', 'FILE SET'
,'ST', 'DISK SPACE TRANSACTION'
,'TS', 'TEMP SEGMENT'
,'IV', 'LIBRARY CACHE INVAILDATION'
,'LS', 'LOG START OR SWITCH'
,'RW', 'ROW WAIT'
,'SQ', 'SEQUENCE NUMBER'
,'TE', 'EXTEND TABLE'
,'TT', 'TEMP TABLE'
,A.TYPE
)
AS "LOCK_TYPE"
,DECODE(A.LMODE
,0, 'NONE'
,1, 'NULL'
,2, 'ROW-S(SS)'
,3, 'ROW-X(SX)'
,4, 'SHARE'
,5, 'S/ROW-X(SSX)'
,6, 'EXCLUSIVE'
,TO_CHAR(A.LMODE)
)
AS "MODE_HELD"
,DECODE(A.REQUEST
,0, 'NONE'
,1, 'NULL'
,2, 'ROW-S(SS)'
,3, 'ROW-X(SX)'
,4, 'SHARE'
,5, 'S/ROW-X(SSX)'
,6, 'EXCLUSIVE'
,TO_CHAR(A.REQUEST)
)
AS "MODE_REQUESTED"
,TO_CHAR(A.ID1) AS "LOCK_ID1"
,TO_CHAR(A.ID2) AS "LOCK_ID2"
,DECODE(BLOCK, 0, 'NOT BLOCKING', 1, 'BLOCKING', 2, 'GLOBAL', TO_CHAR(BLOCK)) AS "BLOCKING_OTHERS"
FROM V$LOCK A WHERE (ID1, ID2) IN (SELECT B.ID1, ID2
FROM V$LOCK B
WHERE B.ID1 = A.ID1);
2.7 LOCK 상태 오브젝트 조회[편집]
- V$LOCKED_OBJECT
- V$SESSION
- DBA_OBJECT
SELECT A.SESSION_ID
, B.SERIAL#
, A.OS_USER_NAME
, A.ORACLE_USERNAME
, C.OBJECT_NAME
, A.LOCKED_MODE
, A.XIDUSN
FROM V$LOCKED_OBJECT A
, V$SESSION B
, DBA_OBJECTS C
WHERE A.OBJECT_ID = C.OBJECT_ID AND A.SESSION_ID = B.SID;
2.8 LOCK 걸린 SQL 구문 조회[편집]
- V$SQLTEXT
- V$SESSION
- V$ACCESS
SELECT B.USERNAME AS USERNAME
, C.SID AS SID
, C.OWNER AS OBJECT_OWNER
, C.OBJECT AS OBJECT
, B.LOCKWAIT
, A.PIECE
, A.SQL_TEXT AS SQL
FROM V$SQLTEXT A
, V$SESSION B
, V$ACCESS C
WHERE A.ADDRESS = B.SQL_ADDRESS
AND A.HASH_VALUE = B.SQL_HASH_VALUE
AND B.SID = C.SID
AND C.OWNER!= 'SYS';
2.9 해당 테이블의 세션을 제거하는 쿼리[편집]
- V$LOCK
- DBA_OBJECTS
- V$SESSION
SELECT 'ALTER SYSTEM KILL SESSION '''|| S.SID||','||S.SERIAL# ||''';'
FROM V$LOCK L, DBA_OBJECTS O, V$SESSION S
WHERE L.ID1 = O.OBJECT_ID
AND S.SID = L.SID
AND O.OWNER = 'ESTDBA'
AND O.OBJECT_NAME = 'TMP_GSYM2'
2.10 Blocking Lock Session 확인[편집]
- V$SQLTEXT
- V$SESSION
- V$ACCESS
SELECT B.BLOCKING_SESSION AS BLOCKING_SESSION_SID
, C.SID AS LOCK_SESSION_SID
, C.OWNER AS OBJECT_OWNER
, C.OBJECT AS OBJECT
, B.LOCKWAIT
, A.PIECE
, A.SQL_TEXT AS SQL
FROM V$SQLTEXT A
, V$SESSION B
, V$ACCESS C
WHERE A.ADDRESS = B.SQL_ADDRESS
AND A.HASH_VALUE = B.SQL_HASH_VALUE
AND B.SID = C.SID
AND B.BLOCKING_SESSION IS NOT NULL
AND C.OWNER NOT IN ('SYS', 'PUBLIC')
AND C.OBJECT NOT IN ('TOAD_PLAN_TABLE')
ORDER BY A.PIECE;
3 테이블 정보[편집]
3.1 테이블 생성일자 보기[편집]
- USER_OBJECTS
SELECT SUBSTRB(OBJECT_NAME, 1, 15) AS OBJECT_NAME
, CREATED
, LAST_DDL_TIME
, TIMESTAMP
, STATUS
FROM USER_OBJECTS
WHERE OBJECT_NAME = UPPER('&테이블명')
AND OBJECT_TYPE = 'TABLE';
3.2 테이블의 크기 및 블록 보기[편집]
- USER_SEGMENTS
SELECT SUBSTR(SEGMENT_NAME, 1, 20)
, BYTES
, BLOCKS
FROM USER_SEGMENTS
WHERE SEGMENT_NAME = UPPER('&테이블명');
3.3 파티션 테이블의 파티션 범위 보기[편집]
- USER_TAB_PARTITIONS
SELECT SUBSTRB(PARTITION_NAME, 1, 30) AS PARTITION_NAME, SUBSTRB(TABLESPACE_NAME, 1, 30) AS TABLESPACE_NAME, HIGH_VALUE
FROM USER_TAB_PARTITIONS
WHERE TABLE_NAME = UPPER('&테이블명');
3.4 CONSTRAINT 보기[편집]
- DBA_CONSTRAINTS
- DBA_CONS_COLUMNS
SELECT DECODE(A.CONSTRAINT_TYPE, 'P', 'Primary Key', 'R', 'Foreign Key', 'C', 'Table Check', 'V', 'View Check', 'U', 'Unique', '?') AS "유형"
, SUBSTRB(A.CONSTRAINT_NAME, 1, 25) AS CONSTRAINT_NAME
, B.POSITION
, SUBSTRB(B.COLUMN_NAME, 1, 25) AS COLUMN_NAME
FROM DBA_CONSTRAINTS A
, DBA_CONS_COLUMNS B
WHERE A.CONSTRAINT_NAME = B.CONSTRAINT_NAME
AND A.OWNER = 'E_LUCIS'
AND A.TABLE_NAME = UPPER('&테이블명') ORDER BY 1, 2, 3;
3.5 특정 테이블의 스키마 구조 확인[편집]
3.5.1 DBA 용[편집]
- DBA_TAB_COLUMNS
- DBA_COL_COMMENTS
- DBA_CONS_COLUMNS
SELECT OWNER
, TABLE_NAME
, COLUMN_NAME
, PK
, COLUMN_NAME
, DATA_TYPE || '( ' || NVL(DATA_TYPE_2, DATA_LENGTH) || ' )' DATA_TYPE
, NULLABLE
, COMMENTS
FROM (SELECT A.OWNER
, A.TABLE_NAME
, A.COLUMN_ID
, B.POSITION PK
, A.COLUMN_NAME
, A.DATA_TYPE
, A.DATA_PRECISION || DECODE(A.DATA_SCALE, NULL, NULL, ',' || A.DATA_SCALE) DATA_TYPE_2
, A.DATA_LENGTH
, A.DATA_PRECISION
, A.DATA_SCALE
, A.NULLABLE
, A.COMMENTS
, ROW_NUMBER() OVER (PARTITION BY A.OWNER, A.TABLE_NAME, A.COLUMN_ID ORDER BY A.COLUMN_ID, B.POSITION) RN
FROM (SELECT COL.OWNER
, COL.TABLE_NAME
, COL.COLUMN_ID
, COL.COLUMN_NAME
, COL.DATA_TYPE
, COL.DATA_LENGTH
, COL.DATA_PRECISION
, COL.DATA_SCALE
, COL.NULLABLE
, COM.COMMENTS
FROM DBA_TAB_COLUMNS COL
, DBA_COL_COMMENTS COM
WHERE COL.COLUMN_NAME = COM.COLUMN_NAME
AND COL.OWNER = COM.OWNER
AND COL.TABLE_NAME = COM.TABLE_NAME
AND COM.OWNER =:IN_OWNER
AND COM.TABLE_NAME LIKE:IN_TABLE_NAME || '%'
) A
, DBA_CONS_COLUMNS B
WHERE B.TABLE_NAME(+) = A.TABLE_NAME
AND B.COLUMN_NAME(+) = A.COLUMN_NAME) X
WHERE X.RN = 1 ORDER BY X.TABLE_NAME, X.COLUMN_ID;
3.5.2 일반 사용자 용[편집]
SELECT TABLE_NAME
, COLUMN_NAME
, PK
, COLUMN_NAME
, DATA_TYPE || '( ' || NVL (DATA_TYPE_2, DATA_LENGTH) || ' )' DATA_TYPE
, NULLABLE
, COMMENTS
FROM (SELECT A.TABLE_NAME
, A.COLUMN_ID
, B.POSITION PK
, A.COLUMN_NAME
, A.DATA_TYPE
, A.DATA_PRECISION
|| DECODE (A.DATA_SCALE, NULL, NULL, ',' || A.DATA_SCALE) DATA_TYPE_2
, A.DATA_LENGTH
, A.DATA_PRECISION
, A.DATA_SCALE
, A.NULLABLE
, A.COMMENTS
, ROW_NUMBER ()
OVER (PARTITION BY A.TABLE_NAME, A.COLUMN_ID
ORDER BY A.COLUMN_ID, B.POSITION) RN
FROM (SELECT COL.TABLE_NAME
, COL.COLUMN_ID
, COL.COLUMN_NAME
, COL.DATA_TYPE
, COL.DATA_LENGTH
, COL.DATA_PRECISION
, COL.DATA_SCALE
, COL.NULLABLE
, COM.COMMENTS
FROM USER_TAB_COLUMNS COL, USER_COL_COMMENTS COM
WHERE COL.COLUMN_NAME = COM.COLUMN_NAME
AND COL.TABLE_NAME = COM.TABLE_NAME
AND COM.TABLE_NAME LIKE :IN_TABLE_NAME || '%') A
, USER_CONS_COLUMNS B
WHERE B.TABLE_NAME(+) = A.TABLE_NAME
AND B.COLUMN_NAME(+) = A.COLUMN_NAME) X
WHERE X.RN = 1
ORDER BY X.TABLE_NAME, X.COLUMN_ID;
3.6 사용자별 오브젝트 수[편집]
- DBA_OBJECTS
SELECT OWNER AS "OWNER"
, SUM (DECODE (OBJECT_TYPE, 'TABLE', 1, 0)) AS "TABLE"
, SUM (DECODE (OBJECT_TYPE, 'INDEX', 1, 0)) AS "INDEX"
, SUM (DECODE (OBJECT_TYPE, 'SYNONYM', 1, 0)) AS "SYNONYMS"
, SUM (DECODE (OBJECT_TYPE, 'SEQUENCE', 1, 0)) AS "SEQUENCES"
, SUM (DECODE (OBJECT_TYPE, 'VIEW', 1, 0)) AS "VIEWS"
, SUM (DECODE (OBJECT_TYPE, 'CLUSTER', 1, 0)) AS "CLUSTERS"
, SUM (DECODE (OBJECT_TYPE, 'DATABASE LINK', 1, 0)) AS "DBLINKS"
, SUM (DECODE (OBJECT_TYPE, 'PACKAGE', 1, 0)) AS "PACKAGES"
, SUM (DECODE (OBJECT_TYPE, 'PACKAGE BODY', 1, 0)) AS "PACKAGE_BODY"
, SUM (DECODE (OBJECT_TYPE, 'PROCEDURE', 1, 0)) AS "PROCEDURES"
, SUM (DECODE (OBJECT_TYPE, 'FUNCTION', 1, 0)) AS "FUNCTION"
FROM DBA_OBJECTS
GROUP BY OWNER;
4 모니터링[편집]
4.1 연결되어 있는 OS 사용자 및 프로그램 조회[편집]
- V$SESSION
SELECT SID
, SERIAL#
, OSUSER
, SUBSTRB(USERNAME, 1, 10) AS USER_NAME
, SUBSTRB(PROGRAM, 1, 30) AS PROGRAM_NAME
, STATUS
, TO_CHAR(LOGON_TIME, 'YYYY/MM/DD HH:MI') AS LOGON_TIME
FROM V$SESSION WHERE TYPE!= ‘BACKGROUND’ AND STATUS = ‘ACTIVE’;
4.2 1시간 이상 유휴 상태인 세션[편집]
SELECT SID
, SERIAL#
, USERNAME
, TRUNC(LAST_CALL_ET / 3600, 2) || ' HR' LAST_CALL_ET
FROM V$SESSION
WHERE LAST_CALL_ET > 3600
AND USERNAME IS NOT NULL;
4.3 Active Session 중 Idle Time이 긴 작업[편집]
- V$SESSION
- V$PROCESS
SELECT VS.SID || ',' || VS.SERIAL# " SID"
, VP.SPID
, VS.MACHINE
, VS.PROGRAM
, VS.MODULE
, VS.STATUS
, TO_CHAR(VS.LOGON_TIME, 'MM/DD HH24:MI') LOGIN_TIME
, ROUND(VS.LAST_CALL_ET / 60) "IDLE"
FROM V$SESSION VS
, V$PROCESS VP
WHERE VS.STATUS = 'ACTIVE'
AND VS.SID NOT IN (1, 2, 3, 4, 5, 6, 7)
AND VS.PADDR = VP.ADDR
ORDER BY 8;
4.4 DBUser 별로 Session 정보를 조회[편집]
SELECT S.USERNAME
, S.SID
, S.SERIAL#
, P.SPID
, S.OSUSER
, S.MACHINE
, S.PROGRAM
, TO_CHAR(S.LOGON_TIME, 'MM/DD HH24:MI') "LOGON_TIME"
, ROUND(S.LAST_CALL_ET / 60) "IDLE"
FROM V$SESSION S
, V$PROCESS P
WHERE S.PADDR = P.ADDR AND S.USERNAME LIKE UPPER('&DBUSER%')
ORDER BY 9;
4.5 Session별 사용 명령어[편집]
- V$SESSION
- V$SESSTAT
- V$STATNAME
- V$PROCESS
SELECT SESS.SID
,SESS.SERIAL#
,SUBSTR(SESS.USERNAME, 1, 10) "USER NAME"
,SUBSTR(OSUSER, 1, 11) "OS USER"
,SUBSTR(SESS.MACHINE, 1, 15) "MACHINE NAME"
,STATUS
,UPPER(
DECODE(NVL(COMMAND, 0)
,0, '---'
,1, 'CREATE TABLE'
,2, 'INSERT -'
,3, 'SELECT -'
,4, 'CREATE CLUST'
,5, 'ALTER CLUST'
,6, 'UPDATE -'
,7, 'DELETE -'
,8, 'DROP -'
,9, 'CREATE INDEX'
,10, 'DROP INDEX'
,11, 'ALTER INDEX'
,12, 'DROP TABLE'
,13, 'CREATE SEQ'
,14, 'ALTER SEQ'
,15, 'ALTER TABLE'
,16, 'DROP SEQ'
,17, 'GRANT'
,18, 'REVOKE'
,19, 'CREATE SYN'
,20, 'DROP SYN'
,21, 'CREATE VIEW'
,22, 'DROP VIEW'
,23, 'VALIDATE IX'
,24, 'CREATE PROC'
,25, 'ALTER PROC'
,26, 'LOCK TABLE'
,27, 'NO OPERATION'
,28, 'RENAME'
,29, 'COMMENT'
,30, 'AUDIT'
,31, 'NOAUDIT'
,32, 'CREATE DBLINK'
,33, 'DROP DB LINK'
,34, 'CREATE DATABASE'
,35, 'ALTER DATABASE'
,36, 'CREATE RBS'
,37, 'ALTER RBS'
,38, 'DROP RBS'
,39, 'CREATE TABLESPACE'
,40, 'ALTER TABLESPACE'
,41, 'DROP TABLESPACE'
,42, 'ALTER SESSION'
,43, 'ALTER USER'
,44, 'COMMIT'
,45, 'ROLLBACK'
,47, 'PL/SQL EXEC'
,48, 'SET TRANSACTION'
,49, 'SWITCH LOG'
,50, 'EXPLAIN'
,51, 'CREATE USER'
,52, 'CREATE ROLE'
,53, 'DROP USER'
,54, 'DROP ROLE'
,55, 'SET ROLE'
,56, 'CREATE SCHEMA'
,58, 'ALTER TRACING'
,59, 'CREATE TRIGGER'
,61, 'DROP TRIGGER'
,62, 'ANALYZE TABLE'
,63, 'ANALYZE INDEX'
,69, 'DROP PROCEDURE'
,71, 'CREATE SNAP LOG'
,72, 'ALTER SNAP LOG'
,73, 'DROP SNAP LOG'
,74, 'CREATE SNAPSHOT'
,75, 'ALTER SNAPSHOT'
,76, 'DROP SNAPSHOT'
,85, 'TRUNCATE TABLE'
,88, 'ALTER VIEW'
,91, 'CREATE FUNCTION'
,92, 'ALTER FUNCTION'
,93, 'DROP FUNCTION'
,94, 'CREATE PACKAGE'
,95, 'ALTER PACKAGE'
,96, 'DROP PACKAGE'
,46, 'SAVEPOINT'
)
)
COMMAND
,SESS.PROCESS "C.PROC"
,PROC.SPID "S.PROC"
,TO_CHAR(SESS.LOGON_TIME, 'YYYY-MM-DD HH24:MI')
FROM V$SESSION SESS
, V$SESSTAT STAT
, V$STATNAME NAME
, V$PROCESS PROC
WHERE SESS.SID = STAT.SID AND STAT.STATISTIC# = NAME.STATISTIC# AND SESS.USERNAME IS NOT NULL AND NAME.NAME = 'RECURSIVE CALLS' AND SESS.PADDR = PROC.ADDR ORDER BY 3, 1, 2;
4.6 사용자 session 2시간 이상 idle 상태가 지속되는 session kill[편집]
- V$SESSION
- V$PROCESS
SET PAGESIZE 0 SPOOL KILLIDLE3.SQL
SELECT DISTINCT '!KILL -9 ' || B.SPID, 'ALTER SYSTEM KILL SESSION '''|| A.SID || ',' || A.SERIAL# || ''';'
FROM V$SESSION A
, V$PROCESS B
WHERE A.PADDR IN (SELECT S.PADDR
FROM V$SESSION S
WHERE STATUS = 'INACTIVE'
GROUP BY S.PADDR
HAVING MIN(ROUND(LAST_CALL_ET / 60)) > 120)
AND A.PADDR = B.ADDR
AND A.STATUS = 'INACTIVE';
SPOOL OFF
4.7 Oracle Process의 정보[편집]
- V$SESSION
- V$PROCESS
- SYS.V_$SESS_IO
SELECT S.STATUS "STATUS"
,S.SERIAL# "SERIAL#"
,S.TYPE "TYPE"
,S.USERNAME "DB USER"
,S.OSUSER "CLIENT USER"
,S.SERVER "SERVER"
,S.MACHINE "MACHINE"
,S.MODULE "MODULE"
,S.TERMINAL "TERMINAL"
,S.PROGRAM "PROGRAM"
,P.PROGRAM "O.S. PROGRAM"
,S.LOGON_TIME "CONNECT TIME"
,LOCKWAIT "LOCK WAIT"
,SI.PHYSICAL_READS "PHYSICAL READS"
,SI.BLOCK_GETS "BLOCK GETS"
,SI.CONSISTENT_GETS "CONSISTENT GETS"
,SI.BLOCK_CHANGES "BLOCK CHANGES"
,SI.CONSISTENT_CHANGES "CONSISTENT CHANGES"
,S.PROCESS "PROCESS"
,P.SPID
,P.PID
,S.SERIAL#
,SI.SID
,S.SQL_ADDRESS "ADDRESS"
,S.SQL_HASH_VALUE "SQL HASH"
,S.ACTION
FROM V$SESSION S
, V$PROCESS P
, SYS.V_$SESS_IO SI
WHERE S.PADDR = P.ADDR(+)
AND SI.SID(+) = S.SID
AND S.USERNAME IS NOT NULL
AND NVL(S.OSUSER, 'X') <> 'SYSTEM'
AND S.TYPE <> 'BACKGROUND'
ORDER BY 3;
4.8 오브젝트에 접속되어 있는 프로그램 조회[편집]
- V$SESSION
- V$ACCESS
SELECT SUBSTR(B.OBJECT, 1, 15) AS OBJECT, SUBSTR(A.PROGRAM, 1, 15) AS PROGRAM, COUNT(*) AS CNT
FROM V$SESSION A
,V$ACCESS B
WHERE A.SID = B.SID
AND B.OWNER NOT IN ('SYS')
AND A.TYPE!= 'BACKGROUND'
AND B.OBJECT LIKE UPPER('&OBJECT_NAME') || '%' GROUP BY B.OBJECT, SUBSTR(A.PROGRAM, 1, 15);
4.9 롤백 세그먼트 경합 조회[편집]
- V$ROLLSTAT
- V$ROLLNAME
SELECT NAME T0
, GETS T1 ,WAITS T2
, TO_CHAR(TRUNC(WAITS / GETS * 100, 2), 099.99) || '%' T3
, TO_CHAR(ROUND(RSSIZE / 1024)) T4
, SHRINKS T5
, EXTENDS T6
FROM V$ROLLSTAT
, V$ROLLNAME
WHERE V$ROLLSTAT.USN = V$ROLLNAME.USN;
4.10 CPU를 많이 사용하는 세션의 식별[편집]
- V$SESSTAT
- V$STATNAME
- V$SESSION
SELECT A.SID
, C.SERIAL#
, A.VALUE
, C.USERNAME
, C.STATUS
, C.PROGRAM
FROM V$SESSTAT A
, V$STATNAME B
, V$SESSION C
WHERE A.STATISTIC# = B.STATISTIC#
AND A.SID = C.SID
AND B.NAME = 'CPU used by this session'
AND A.VALUE > 0 ORDER BY A.VALUE DESC;
4.11 Disk Read 가 많은 SQL문 찾기[편집]
- V$SQLAREA
SELECT DISK_READS, SQL_TEXT
FROM V$SQLAREA
WHERE DISK_READS > 100
ORDER BY DISK_READS DESC;
4.12 Rollback Segment를 사용하고 있는 SQL문 조회[편집]
- V$ROLLNAME
- V$ROLLSTAT
- V$SESSION
- V$SQLTEXT
- V$TRANSACTION
SELECT A.NAME
, B.XACTS
, C.SID
, C.SERIAL#
, C.USERNAME
, D.SQL_TEXT
FROM V$ROLLNAME A
, V$ROLLSTAT B
, V$SESSION C
, V$SQLTEXT D
, V$TRANSACTION E
WHERE A.USN = B.USN
AND B.USN = E.XIDUSN
AND C.TADDR = E.ADDR
AND C.SQL_ADDRESS = D.ADDRESS
AND C.SQL_HASH_VALUE = D.HASH_VALUE
ORDER BY A.NAME, C.SID, D.PIECE;
4.13 오래도록 수행되는 Full Table Scan를 모니터링[편집]
- V$SESSION_LONGOPS
SELECT SID
, SERIAL#
, OPNAME
, TO_CHAR(START_TIME, 'HH24:MI:SS') AS "START"
, (SOFAR / TOTALWORK) * 100 AS "PERCENT_COMPLETE"
FROM V$SESSION_LONGOPS;
4.14 System 테이블스페이스에 비시스템 세그먼트 조회[편집]
- DBA_SEGMENTS
SELECT OWNER
, SEGMENT_NAME
, SEGMENT_TYPE
, TABLESPACE_NAME
FROM DBA_SEGMENTS
WHERE OWNER NOT IN ('SYS', 'SYSTEM')
AND TABLESPACE_NAME = 'SYSTEM';
4.15 인덱스의 Delete Space 조회[편집]
- INDEX_STATS
--Delete Space% 값이 20% 가 넘으면, 그 인덱스는 다시 작성하는 것이 좋다.
SELECT NAME
, LF_ROWS
, DEL_LF_ROWS
, (DEL_LF_ROWS / LF_ROWS) * 100 AS "DELETE SPACE%"
FROM INDEX_STATS WHERE NAME = UPPER('&INDEX_NAME');
4.16 딕셔너리/뷰 정보 조회[편집]
- DICTIONARY
- DICT_COLUMNS
SELECT A.TABLE_NAME
, B.COLUMN_NAME
FROM DICTIONARY A
, DICT_COLUMNS B
WHERE A.TABLE_NAME = B.TABLE_NAME;
5 프로시져/패키지[편집]
5.1 패키지 검색 1 - 특정 오라클 사용자 중에서 패키지 소스와 일치하는 텍스트를 조회[편집]
-- 오라클 사용자에서 사용하는 패키지를 보여는 방법
----
:IN_OWNER: 오라클 사용자
----
:IN_OBJECT_NAME: 패키지 이름
SELECT OBJECT_NAME
FROM DBA_OBJECTS
WHERE OWNER =:IN_OWNER
AND OBJECT_NAME LIKE '%' ||:IN_OBJECT_NAME || '%'
AND OBJECT_TYPE = 'PACKAGE';
-- 오라클 사용자의 패키지 중에서 텍스트 내용을 검색하여 패키지 정보를 추출
- IN_OWNER: 오라클 사용자
- IN_TEXT : 패키지소 스에서 검색할 텍스트
SELECT NAME -- 패키지 이름 , LINE -- 라인 수 , TEXT -- 패키지 BODY에 수정된 내용 FROM DBA_SOURCE WHERE OWNER =:IN_OWNER AND TEXT LIKE '%' ||:IN_TEXT || '%';
5.2 특정 사용자의 패키지 내에서 주석처리가 되지 않은 항목을 조회[편집]
/*
오라클 사용자가 사용하는 패키지의 BODY 소스를 검색하여 주식이 없거나 패턴이 맞지 않는 항목을 조회 한다.
- /
SELECT * FROM DBA_OBJECTS B WHERE B.OWNER =:IN_OWNER AND B.OBJECT_TYPE = 'PACKAGE BODY' AND B.STATUS <> 'INVALID' -- VALID 상태만 조회, 만약 INVALID 된다고 해도 패키지를 수행하는 순간 컴파일 됨. AND NOT EXISTS
(SELECT 1
FROM DBA_SOURCE A
WHERE A.OWNER = B.OWNER
AND A.TYPE = B.OBJECT_TYPE
AND A.NAME = B.OBJECT_NAME
AND A.LINE <= 5
AND A.TEXT LIKE '%NAME%');
5.3 다중 UPDATE 쿼리[편집]
/*
BYPASS_UJVC 힌트를 이용하면 특정 뷰를 만들어서 컬럼 대 컬럼을 대입 할 수 있습니다.
아래 쿼리는 메타정보관리용 유저로서 코멘트의 내용 중에서 정규표현식을 이용하여 관련 데이터를 조작 하는 방법 입니다.
*/
UPDATE /*+ BYPASS_UJVC */
( SELECT X.*
,CASE
WHEN UNIT_INSTR > 0 THEN SUBSTR(X.COLUMN_DESC, X.UNIT_INSTR + 3, 1)
END
B_UNIT
FROM (SELECT A.SERVER
,A.OWNER
,A.TABLE_NAME
,A.COLUMN_NAME
,A.COLUMN_DESC
,A.GRP_CD A_GRP_CD
,A.UNIT A_UNIT
,REGEXP_INSTR(COLUMN_DESC, '단위\:') UNIT_INSTR FROM DBA_MYCOL A WHERE A.SERVER =:IN_SERVER AND A.OWNER =:IN_OWNER
AND A.TABLE_NAME =:IN_TABLE_NAME) X)
SET A_UNIT = B_UNIT
UPDATE_DT = SYSDATE;
5.4 CPU를 많이 사용하는 세션의 식별(SQL TEXT 조회)[편집]
SELECT A.*
,(SELECT SS.SQL_TEXT
FROM V$SQLAREA SS
WHERE SS.ADDRESS = A.SQL_ADDRESS
AND ROWNUM <= 1
) AS SQL_TEST
FROM (
SELECT A.SID
,C.SERIAL#
,A.VALUE
,C.USERNAME
,C.STATUS
,C.PROGRAM
,C.SQL_ADDRESS
,ROW_NUMBER() OVER (ORDER BY A.VALUE DESC) RN
FROM V$SESSTAT A
,V$STATNAME B
,V$SESSION C
WHERE A.STATISTIC# = B.STATISTIC#
AND A.SID = C.SID
AND B.NAME = 'CPU used by this session'
AND A.VALUE > 0
AND C.STATUS = 'ACTIVE'
AND C.USERNAME IS NOT NULL
) A
WHERE A.RN <= 10;
5.5 현재 세션에서 10초이상 걸리는 쿼리 조회 (SELECT절)[편집]
SELECT ABS(SYSDATE - A.LAST_LOAD_TIME) * 24 * 60 * 60 AS SEC_TIEM, A.*
FROM V$SQLAREA A
, V$SESSION B
WHERE A.SQL_TEXT LIKE '%SELECT%'
AND A.ADDRESS = B.SQL_ADDRESS
AND B.STATUS = 'ACTIVE'
AND A.ELAPSED_TIME >= 10 * 1000000 -- 실행계획에서 10초 이상 걸리는 쿼리를 조회(실제 걸리는 시간은 아님.)
AND A.PARSING_SCHEMA_NAME NOT IN ('SYS', 'SYSTEM', 'SYSMAN')
AND B.USERNAME IS NOT NULL;
5.6 현재 세션에서 PGA, UGA, CPU 사용량 세션별로 조회하는 쿼리[편집]
SELECT B.USERNAME
,A.SID
,A.PGA_USAGE
,A.UGA_USAGE
,A.CPU_USAGE_SECONDS
,B.MACHINE
,B.PROGRAM
,B.MODULE
FROM (SELECT B.SID
,MAX(DECODE(C.NAME, 'session pga memory', TRUNC(B.VALUE / 1024 / 1024) || 'MB', 0)) AS PGA_USAGE
,MAX(DECODE(C.NAME, 'session uga memory', TRUNC(B.VALUE / 1024 / 1024) || 'MB', 0)) AS UGA_USAGE
,MAX(DECODE(C.NAME, 'CPU used by this session', (B.VALUE / 100) || ' Sec', 0)) AS CPU_USAGE_SECONDS
FROM V$SESSTAT B
,V$STATNAME C
WHERE B.STATISTIC# = C.STATISTIC#
GROUP BY B.SID) A
,V$SESSION B
WHERE B.SID = A.SID AND B.STATUS = 'ACTIVE' AND B.USERNAME IS NOT NULL;
5.7 상호 DB간에 컬럼 이름 비교[편집]
/*
양쪽 DB에서 사용하는 테이블 중에서 컬럼 이름 다른 항목을 찾는다.
*/
SELECT A.TABLE_NAME
,A.COLUMN_NAME
,A.COLUMN_ID
,A.DATA_TYPE || '(' || A.DATA_LENGTH || ')' DATA_TYPE
FROM USER_TAB_COLUMNS@LINK_ESTDB A WHERE A.TABLE_NAME =:IN_TABLE_NAME AND NOT EXISTS
(SELECT 'X'
FROM USER_TAB_COLUMNS B
WHERE B.TABLE_NAME = A.TABLE_NAME
AND B.COLUMN_NAME = A.COLUMN_NAME);
SELECT A.TABLE_NAME, A.COLUMN_NAME, A.COLUMN_ID
FROM USER_TAB_COLUMNS@LINK_ESTDB A
WHERE A.TABLE_NAME =:IN_TABLE_NAME
MINUS
SELECT A.TABLE_NAME, A.COLUMN_NAME, A.COLUMN_ID
FROM USER_TAB_COLUMNS A
WHERE A.TABLE_NAME =:IN_TABLE_NAME
5.8 DB Link 보기[편집]
SELECT SUBSTRB (U.NAME, 1, 10) AS OWNER
, SUBSTRB (L.NAME, 1, 20) AS DB_LINK
, SUBSTRB (L.HOST, 1, 10) AS HOST
, SUBSTRB (L.USERID || '/' || L.PASSWORD, 1, 15) AS USERPASS
FROM SYS.LINK$ L, SYS.USER$ U
WHERE L.OWNER# = U.USER#;
5.9 View의 정의 내역 보기[편집]
SET LONG 100000
SELECT TEXT FROM USER_VIEWS WHERE VIEW_NAME LIKE UPPER('&뷰_이름');
5.10 동일(중복) 자료 삭제 방법[편집]
- ROW_NUMBER() 이용
DELETE FROM 테이블명
WHERE ROWID IN (
SELECT ROWID
FROM (
SELECT *
FROM (
SELECT ROW_NUMBER() OVER(PARTITION BY 컬럼명 ORDER BY 컬럼명) AS num
FROM 테이블명
)
WHERE num > 1 -- num의 값이 1초과인 데이터들만 삭제
)
);
- MIN(ROWID) 보다 큰건은 삭제(신규 추가된건 삭제)
DELETE FROM 테이블명 A
WHERE ROWID > (SELECT MIN(ROWID) FROM 테이블명 B
WHERE A.컬럼 = B.컬럼
);
- MAX(ROWID) 보다 작은건 삭제 (처음 추가된건 제)
DELETE FROM 테이블명 A
WHERE ROWID < (SELECT MAX(ROWID) FROM 테이블명 B
WHERE A.컬럼 = B.컬럼);