$ cat /etc/redhat-release
Red Hat Enterprise Linux Server
release 5.7 (Tikanga)
SQL> select * from v$version;
BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit
Production
PL/SQL Release 11.2.0.2.0 - Production
CORE 11.2.0.2.0 Production
TNS for Linux: Version 11.2.0.2.0 - Production
NLSRTL Version 11.2.0.2.0 – Production
Here I’m renaming TESTDB database name to DEMODB database including
DBID
STEP
1 ) Shut down the database and open database in mount
SQL> select name from
v$database;
NAME
---------
TESTDB
SQL> select
instance_name,status from v$instance;
INSTANCE_NAME STATUS
---------------- ------------
TESTDB OPEN
SQL> shut immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount
ORACLE instance started.
Total System Global Area 1068937216 bytes
Fixed Size
2233336 bytes
Variable Size
683674632 bytes
Database Buffers
377487360 bytes
Redo Buffers
5541888 bytes
Database mounted.
SQL>
Step
2) Invoke the DBNEWID utility (nid) specifying the new database name in DBNAME
$ nid target=/ dbname=DEMODB
DBNEWID: Release 11.2.0.2.0 - Production on Mon Sep 17 14:45:30 2012
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
Connected to database TESTDB (DBID=2577169847)
Connected to server version 11.2.0
Control Files in database:
/opt/oracle/oradata/TESTDB/control01.ctl
/opt/oracle/app/fast_recovery_area/TESTDB/control02.ctl
Change database ID and database name TESTDB to DEMODB? (Y/[N]) => y
Proceeding with operation
Changing database ID from 2577169847 to 3790527754
Changing database name from TESTDB to DEMODB
Control File
/opt/oracle/oradata/TESTDB/control01.ctl - modified
Control File
/opt/oracle/app/fast_recovery_area/TESTDB/control02.ctl - modified
Datafile
/opt/oracle/oradata/TESTDB/system01.db - dbid changed, wrote new name
Datafile
/opt/oracle/oradata/TESTDB/sysaux01.db - dbid changed, wrote new name
Datafile
/opt/oracle/oradata/TESTDB/users01.db - dbid changed, wrote new name
Datafile
/opt/oracle/oradata/TESTDB/undotbs01.db - dbid changed, wrote new name
Control File
/opt/oracle/oradata/TESTDB/control01.ctl - dbid changed, wrote new name
Control File
/opt/oracle/app/fast_recovery_area/TESTDB/control02.ctl - dbid changed, wrote
new name
Instance shut down
Database name changed to DEMODB.
Modify parameter file and generate a new password file before
restarting.
Database ID for database DEMODB changed to 3790527754.
All previous backups and archived redo logs for this database are unusable.
Database is not aware of previous backups and archived logs in Recovery
Area.
Database has been shutdown, open database with RESETLOGS option.
Succesfully changed database name and ID.
DBNEWID - Completed succesfully.
Step
3) Make changes to pfile and password file and opened the database with
resetlogs option
$ cd $ORACLE_HOME/dbs
Edit pfile ----> initDEMODB.ora
Vi initDEMODB.ora
Change ‘dbname’
$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.2.0 Production on Mon Sep 17 19:28:23 2012
Copyright (c) 1982, 2010, Oracle.
All rights reserved.
Connected to an idle instance.
SQL> STARTUP MOUNT
ORACLE instance started.
Total System Global Area 1068937216 bytes
Fixed Size 2233336 bytes
Variable Size
616565768 bytes
Database Buffers
444596224 bytes
Redo Buffers
5541888 bytes
Database mounted.
SQL> alter database open
resetlogs;
Database altered.
SQL> select name from v$database;
NAME
---------
DEMODB
Also see:
How to Change the DBID,
DBNAME Using NID Utility in version 10gR2 onwards (Doc ID 863800.1)
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