오라클 코어 - 조나단 루이스
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1 Oracle Core Essential Internals for DBAs and Developers (Apress)[편집]
1.1 관련 스크립트[편집]
1.1.1 core_demo_02.sql[편집]
rem
rem Script: core_demo_02.sql
rem Author: Jonathan Lewis
rem Dated: Feb 2011
rem Purpose:
rem
rem Last tested
rem 11.2.0.2
rem 10.2.0.3
rem Not relevant
rem 9.2.0.8
rem 8.1.7.4
rem
rem Notes:
rem Can only be run as SYS in this form
rem
rem Diagnostics for core undo/redo concepts
rem
column indx format 9999
-- Size of in-memory undo and private redo after a small change
-- select
-- indx,
-- to_number(ktifpupe,'XXXXXXXX') -
-- to_number(ktifpupb,'XXXXXXXX') undo_size,
-- to_number(ktifpupc,'XXXXXXXX') -
-- to_number(ktifpupb,'XXXXXXXX') undo_usage,
-- to_number(ktifprpe,'XXXXXXXX') -
-- to_number(ktifprpb,'XXXXXXXX') redo_size,
-- to_number(ktifprpc,'XXXXXXXX') -
-- to_number(ktifprpb,'XXXXXXXX') redo_usage
-- from
-- x$ktifp
-- ;
select indx,
--KTIFPTXFLG,ADDR,KTIFPNO, KTIFPSTA, KTIFPXCB xctaddr,
to_number(KTIFPUPE, 'XXXXXXXXXXXXXXXX') -
to_number(KTIFPUPB, 'XXXXXXXXXXXXXXXX') undo_size,
(to_number(KTIFPUPB, 'XXXXXXXXXXXXXXXX') - to_number(KTIFPUPC, 'XXXXXXXXXXXXXXXX'))*-1 undo_usage,
to_number(KTIFPRPE, 'XXXXXXXXXXXXXXXX') - to_number(KTIFPRPB, 'XXXXXXXXXXXXXXXX') redo_size,
(to_number(KTIFPRPB, 'XXXXXXXXXXXXXXXX') -to_number(KTIFPRPC, 'XXXXXXXXXXXXXXXX'))*-1 redo_usage
-- , KTIFPPSI,KTIFPRBS,KTIFPTCN
from x$ktifp
;
-- Sizes of private redo
select
indx,
PNEXT_BUF_KCRFA_CLN,
PTR_KCRF_PVT_STRAND,
FIRST_BUF_KCRFA,
LAST_BUF_KCRFA,
-- LASTCHANGE_KCRFA, not available in 11.2
STRAND_SIZE_KCRFA strand_size,
SPACE_KCRF_PVT_STRAND strand_space
from
x$kcrfstrand
;