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Using RMAN to rename datafiles

Expert Oracle Tips by Burleson Consulting

September 28, 2010

Using CONFIGURE AUXNAME configuration to rename datafiles

It’s possible to specify the location of database files of a duplicated database directly from RMAN configuration. By doing so, RMAN will keep these configuration changes and we’ll not need to specify them in the future.

To clear the AUXNAME from the default CONFIGURE settings, issue the following command at the RMAN command:

RMAN> configure auxname for datafile <data file number> clear;

Now, perform all steps above till the run block and add the following steps:

  • Make changes to RMAN configuration default settings and configure AUXNAME parameter for each data file.

    • Connect to RMAN and perform the following configuration changes

    CONFIGURE AUXNAME FOR DATAFILE 1 TO '/u03/oracle/clone_db/system01.dbf';

    CONFIGURE AUXNAME FOR DATAFILE 2 TO '/u03/oracle/clone_db/undotbs01.dbf';

    CONFIGURE AUXNAME FOR DATAFILE 3 TO '/u03/oracle/clone_db/sysaux01.dbf';

    CONFIGURE AUXNAME FOR DATAFILE 4 TO

    '/u03/oracle/clone_db/users01.dbf';

    Above, we’ve configured RMAN so that it will change the location of each file specified

  • Run the following block to duplicate the database in the same host

  • Even though, we use AUXNAME for data files, the CONFIGURE AUXNAME can’t be used for temp files and redo log files. Thus, for temp files we have to use SET NEWNAME clause and for redo log files we have to use LOGFILE clause.

    RUN {

    SET NEWNAME FOR TEMPFILE 1 TO '/u03/oracle/clone_db/temp01.dbf';

    DUPLICATE TARGET DATABASE TO clone_db

    LOGFILE

    '/u03/oracle/clone_db/redolog01.log' SIZE 5M, '/u03/oracle/clone_db/redolog02.log' SIZE 5M, '/u03/oracle/clone_db/redolog03.log' SIZE 5M;

    }

    After fulfilling all steps, we get new database on the same host. If we check RMAN configuration for any changes, we’ll see that RMAN keeps AUXNAME configuration for each file in its configuration. As it has already been mentioned we’ll not need any pre configuration to change file names because all changes reside at RMAN configuration

    RMAN> SHOW AUXNAME;

    RMAN configuration parameters are:

    CONFIGURE AUXNAME FOR DATAFILE '/u02/oradata/test/system01.dbf' TO '/u03/oracle/clone_db/system01.dbf';

    CONFIGURE AUXNAME FOR DATAFILE '/u02/oradata/test/undotbs01.dbf' TO '/u03/oracle/clone_db/undotbs01.dbf';

    CONFIGURE AUXNAME FOR DATAFILE '/u02/oradata/test/sysaux01.dbf' TO '/u03/oracle/clone_db/sysaux01.dbf';

    CONFIGURE AUXNAME FOR DATAFILE '/u02/oradata/test/users01.dbf' TO '/u03/oracle/clone_db/users01.dbf';

    RMAN>

     
     
     
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