오라클 sid 변경

Since 9i dbnewid utility (nid) can be used to change database name(and DBID if required).
If database name being changed only then resetlogs is not required:

1. startup database in mount mode

shutdown immediate
startup mount

2. run nid to change database name:

nid target=sys/syspassword@dbtns dbname=newname setname=YES

3. shutdown and start database in mount mode:

      shutdown immediate
      startup mount

4. change db_name in spfile (or in pfile editing the file):

alter system set db_name=newname scope=spfile;

5. recreate password file:

orapwd file=orapwnewname password=syspassword

6. startup the database

startup

7. post rename steps:

      change SID in listener.ora
      correct tnsnames.ora
      remove old trace directories
      change /etc/oratab (UNIX) or rename windows service using oradim