Change Oracle DB Name ,DBID and Both

Oracle DBA changing database name ,DBID or both are common activity which are needed to be performed regularly. With the introduction on the NID utility this has become easy to make such changes.In this blog , We will show you how to change :

1. DB Name and ID

2. DB Name

3. DBID

using NID utility.

Change DB Name and DBID:

1) Take Full backup of the database and mount database.

SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount;
ORACLE instance started.

Total System Global Area 251658240 bytes
Fixed Size                  2236368 bytes
Variable Size             161210416 bytes
Database Buffers           83886080 bytes
Redo Buffers                4325376 bytes
Database mounted.
SQL> !
$ . oraenv
ORACLE_SID = [testdb1] ?
$ exit

SQL> select * from v$instance;

INSTANCE_NUMBER INSTANCE_NAME
--------------- ----------------
HOST_NAME
----------------------------------------------------------------
VERSION           STARTUP_T STATUS       PAR    THREAD# ARCHIVE LOG_SWITCH_WAIT
----------------- --------- ------------ --- ---------- ------- ---------------
LOGINS     SHU DATABASE_STATUS   INSTANCE_ROLE      ACTIVE_ST BLO
---------- --- ----------------- ------------------ --------- ---
              1 testdb1
oraclehost01
10.2.0.4.0        07-JUN-12 MOUNTED      NO           1 STARTED
ALLOWED    NO ACTIVE            PRIMARY_INSTANCE   NORMAL    NO

SQL> select dbid ,name from v$database;

DBID NAME
---------- ---------
1049010805 testdb1

SQL> !

2) Use NID to change the Name and DBID both.

$ nid target="/ as sysdba" dbname=testdb2

DBNEWID: Release - Production on Thu Jun 7 12:12:36 2012

Password:
Connected to database testdb1 (DBID=1049010805)

Connected to server version

Control Files in database:
    /u03/oradata/testdb1/testdb1_control_01.ctl
    /u04/oradata/testdb1/testdb1_control_02.ctl
    /u02/oradata/testdb1/testdb1_control_03.ctl

Change database ID and database name testdb1 to testdb2? (Y/[N]) => Y

Proceeding with operation
Changing database ID from 1049010805 to 1099025088
Changing database name from testdb1 to testdb2
    Control File /u03/oradata/testdb1/testdb1_control_01.ctl - modified
    Control File /u04/oradata/testdb1/testdb1_control_02.ctl - modified
    Control File /u02/oradata/testdb1/testdb1_control_03.ctl - modified
    Datafile /u03/oradata/testdb1/testdb1_system_01.dbf - dbid changed, wrote new name
    Datafile /u02/oradata/testdb1/testdb1_undotbs_01.dbf - dbid changed, wrote new name
    Datafile /u03/oradata/testdb1/testdb1_sysaux_01.dbf - dbid changed, wrote new name
    Datafile /u03/oradata/testdb1/testdb1_users_01.dbf - dbid changed, wrote new name
    Datafile /u02/oradata/testdb1/testdb1_tools_01.dbf - dbid changed, wrote new name
    Datafile /u02/oradata/testdb1/testdb1_ilogdwp_01.dbf - dbid changed, wrote new name
    Datafile /u02/oradata/testdb1/testdb1_temp_01.dbf - dbid changed, wrote new name
    Control File /u03/oradata/testdb1/testdb1_control_01.ctl - dbid changed, wrote new name
    Control File /u04/oradata/testdb1/testdb1_control_02.ctl - dbid changed, wrote new name
    Control File /u02/oradata/testdb1/testdb1_control_03.ctl - dbid changed, wrote new name
    Instance shut down

Database name changed to testdb2.
Modify parameter file and generate a new password file before restarting.
Database ID for database testdb2 changed to 1099025088.
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.

3) Change the DB name in parameter file and Start with open Resetlogs .

SQL> startup nomount pfile='/u01/app/oracle/admin/testdb2/pfile/inittestdb2.ora'
ORACLE instance started.

Total System Global Area 251658240 bytes
Fixed Size                  2236368 bytes
Variable Size              98295856 bytes
Database Buffers          146800640 bytes
Redo Buffers                4325376 bytes
SQL> alter database mount;

Database altered.

SQL> alter database open resetlogs;

Database altered.

Change DB Name Only

1) Take Full backup of the database and mount database.

SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount;
ORACLE instance started.

Total System Global Area 251658240 bytes
Fixed Size                  2236368 bytes
Variable Size             161210416 bytes
Database Buffers           83886080 bytes
Redo Buffers                4325376 bytes
Database mounted.

2) Use NID to change DB Name only (With Setname=YES) Parameter.

$>nid TARGET="/ as sysdba" DBNAME=testdb2 SETNAME=YES

DBNEWID: Release 11.2.0.2.0 - Production on Mon Jun 16 09:30:23 2014

Connected to database testdb1 (DBID=515887169)

Connected to server version

Control Files in database:
    /u02/oradata/testdb1/testdb1_control_01.ctl
    /u03/oradata/testdb1/testdb1_control_02.ctl
    /u04/oradata/testdb1/testdb1_control_03.ctl

Change database name of database testdb1 to testdb2? (Y/[N]) => Y

Proceeding with operation
Changing database name from testdb1 to testdb2
    Control File /u02/oradata/testdb1/testdb1_control_01.ctl - modified
    Control File /u03/oradata/testdb1/testdb1_control_02.ctl - modified
    Control File /u04/oradata/testdb1/testdb1_control_03.ctl - modified
    Datafile /u04/oradata/testdb1/testdb1_system_01.db - wrote new name
    Datafile /u02/oradata/testdb1/testdb1_undotbs_01.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_sysaux_01.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_users_01.db - wrote new name
    Datafile /u02/oradata/testdb1/testdb1_tools_01.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_BUB_DATA_01.db - wrote new name
    Datafile /u03/oradata/testdb1/testdb1_BUB_INDX_01.db - wrote new name
    Datafile /u03/oradata/testdb1/testdb1_DFL_DATA_01.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_DFL_INDX_01.db - wrote new name
    Datafile /u02/oradata/testdb1/testdb1_WIS_DATA_01.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_WIS_INDX_01.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_undotbs_02.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_DFL_DATA_02.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_DFL_DATA_03.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_DFL_DATA_04.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_DFL_DATA_05.db - wrote new name
    Datafile /u03/oradata/testdb1/testdb1_dfl_data_u03_autoadd_01.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_dfl_data_u02_autoadd_01.db - wrote new name
    Datafile /u03/oradata/testdb1/testdb1_dfl_data_u03_autoadd_02.db - wrote new name
    Datafile /u02/oradata/testdb1/testdb1_dfl_data_u04_autoadd_01.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_dfl_data_u02_autoadd_02.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_dfl_data_u02_autoadd_03.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_dfl_data_u02_autoadd_04.db - wrote new name
    Datafile /u03/oradata/testdb1/testdb1_DFL_DATA_06.db - wrote new name
    Datafile /u02/oradata/testdb1/testdb1_bub_data_u04_autoadd_02.db - wrote new name
    Datafile /u02/oradata/testdb1/testdb1_DFL_DATA_07.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_sysaux_u02_autoadd_05.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_SOX_DATA01.db - wrote new name
    Datafile /u03/oradata/testdb1/testdb1_DFL_DATA_08.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_DFL_DATA_09.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_dfl_data_u02_autoadd_06.db - wrote new name
    Datafile /u02/oradata/testdb1/testdb1_dfl_indx_u04_autoadd_03.db - wrote new name
    Datafile /u02/oradata/testdb1/testdb1_DFL_INDX_02.db - wrote new name
    Datafile /u02/oradata/testdb1/testdb1_bub_data_u04_autoadd_03.db - wrote new name
    Datafile /u02/oradata/testdb1/testdb1_bub_data_u04_autoadd_04.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_DFL_INDX_02.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_DFL_INDX_04.db - wrote new name
    Datafile /u03/oradata/testdb1/testdb1_DFL_INDX_02.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_sysaux_u02_autoadd_06.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_temp_01.db - wrote new name
    Datafile /u03/oradata/testdb1/testdb1_temp_02.db - wrote new name
    Datafile /u04/oradata/testdb1/testdb1_temp_03.db - wrote new name
    Control File /u02/oradata/testdb1/testdb1_control_01.ctl - wrote new name
    Control File /u03/oradata/testdb1/testdb1_control_02.ctl - wrote new name
    Control File /u04/oradata/testdb1/testdb1_control_03.ctl - wrote new name
    Instance shut down

Database name changed to testdb1.
Modify parameter file and generate a new password file before restarting.
Succesfully changed database name.
DBNEWID - Completed succesfully.

3) Change the DB name in parameter file and Start with open Resetlogs .

SQL> startup nomount pfile='/u01/app/oracle/admin/testdb2/pfile/inittestdb2.ora'
ORACLE instance started.

Database altered.

SQL> alter database open resetlogs;

Database altered.

Change DBID Only

1) Take Full backup of the database and mount database.

SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount;
ORACLE instance started.

2) Use NID to change DBID only(Without DBNAME argument )

$nid target="/ as sysdba"
DBNEWID: Release - Production on Sat Jun 2 19:08:28 2012
Copyright (c) 1982, 2007, Oracle. All rights reserved.
Connected to database testdb1 (DBID=4249066509)
Connected to server version 10.2.0
Control Files in database:
    /u02/oradata/testdb1/testdb1_control_01.ctl
    /u03/oradata/testdb1/testdb1_control_02.ctl
    /u04/oradata/testdb1/testdb1_control_03.ctl
Change database ID of database testdb1? (Y/[N]) => Y
Proceeding with operation
Changing database ID from 4249066509 to 4268740908
    Control File /u02/oradata/testdb1/testdb1_control_01.ctl - modified
    Control File /u03/oradata/testdb1/testdb1_control_02.ctl - modified
    Control File /u04/oradata/testdb1/testdb1_control_03.ctl - modified
    Datafile /u02/oradata/testdb1/testdb1_system_01.dbf - dbid changed
    Datafile /u02/oradata/testdb1/testdb1_undotbs1_01.dbf - dbid changed
    Datafile /u03/oradata/testdb1/testdb1_users_01.dbf - dbid changed
    Datafile /u02/oradata/testdb1/testdb1_tools_01.dbf - dbid changed
    Datafile /u02/oradata/testdb1/testdb1_wwim_data_01.dbf - dbid changed
    Datafile /u03/oradata/testdb1/testdb1_wwim_indx_01.dbf - dbid changed
    Datafile /u02/oradata/testdb1/testdb1_wwim_data_02.dbf - dbid changed
    Datafile /u02/oradata/testdb1/testdb1_wwim_data_03.dbf - dbid changed
    Datafile /u02/oradata/testdb1/testdb1_wwim_data_04.dbf - dbid changed
    Datafile /u02/oradata/testdb1/testdb1_wwim_data_05.dbf - dbid changed
    Datafile /u03/oradata/testdb1/testdb1_wwim_indx_02.dbf - dbid changed
    Datafile /u03/oradata/testdb1/testdb1_wwim_indx_03.dbf - dbid changed
    Datafile /u03/oradata/testdb1/testdb1_wwim_indx_04.dbf - dbid changed
    Datafile /u02/oradata/testdb1/testdb1_WWIM_EUL_01.dbf - dbid changed
    Datafile /u03/oradata/testdb1/testdb1_wwim_data_06.dbf - dbid changed
    Datafile /u04/oradata/testdb1/testdb1_wwim_indx_05.dbf - dbid changed
    Datafile /u04/oradata/testdb1/testdb1_wwim_data_07.dbf - dbid changed
    Datafile /u04/oradata/testdb1/testdb1_wwim_data_08.dbf - dbid changed
    Datafile /u02/oradata/testdb1/testdb1_wwim_data_temp_01.dbf - dbid changed
    Datafile /u04/oradata/testdb1/testdb1_wwim_data_temp_02.dbf - dbid changed
    Datafile /u04/oradata/testdb1/testdb1_wwim_data_temp_03.dbf - dbid changed
    Datafile /u02/oradata/testdb1/testdb1_sysaux_01.dbf - dbid changed
    Datafile /u02/oradata/testdb1/testdb1_temp01_01.dbf - dbid changed
    Control File /u02/oradata/testdb1/testdb1_control_01.ctl - dbid changed
    Control File /u03/oradata/testdb1/testdb1_control_02.ctl - dbid changed
    Control File /u04/oradata/testdb1/testdb1_control_03.ctl - dbid changed
    Instance shut down

Database ID for database testdb1 changed to 4268740908.
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 ID.
DBNEWID - Completed succesfully.

3) Change the DB name in parameter file and Start with open Resetlogs .
$sqlplus "/as sysdba"
SQL*Plus: Release - Production on Sat Jun 2 19:08:56 2012
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
Connected to an idle instance.
SQL> startup mount;
ORACLE instance started.
Total System Global Area 1577058304 bytes
Fixed Size                  2040920 bytes
Variable Size             956308392 bytes
Database Buffers          603979776 bytes
Redo Buffers               14729216 bytes
Database mounted.
SQL> alter database open RESETLOGS;
Database altered.
SQL> shut immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup;
ORACLE instance started.
Total System Global Area 1577058304 bytes
Fixed Size                  2040920 bytes
Variable Size             956308392 bytes
Database Buffers          603979776 bytes
Redo Buffers               14729216 bytes
Database mounted.
Database opened.
SQL> set lines 132
SQL> select dbid from v$database;
      DBID
4268740908

You can learn more about oracle database administration:

Pro Oracle GoldenGate for the DBA

Oracle Security Tools Installation and Configuration

Expert Oracle Exadata

Oracle Database 12c Release 2 Real Application Clusters Handbook: Concepts, Administration, Tuning & Troubleshooting

Expert Oracle RAC 12c

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