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Oracle rename data file tips
Oracle Tips by Burleson Consulting |
Oracle is the worlds most
flexible database and we have many methods for renaming tablespaces and the
underlying data files.
Tablespace data file rename
We can use the alter tablespace rename datafile
command, but the tablespace most be offline and you must re-name the data file
while the tablespace is offline:
sqlplus: ALTER TABLESPACE cust_ts
OFFLINE;
linux> mv 'OLDFILE.DBF ' 'NEWFILE.DBF'
sqlplus: ALTER TABLESPACE
cust_ts
RENAME datafile
'/u01/app/oracle/mysid/oldname.dbf'
TO
'/u01/app/oracle/mysid/newname.dbf'
Database data file
rename
We can also use the alter
database rename datafile command, but the data file must be renamed in the OS
(using the mv linux command) while the database is down and the rename data file
must be done while the database is un-opened (in the mount stage):
sqlplus: shutdown;
linux> mv 'OLDFILE.DBF ' 'NEWFILE.DBF'
sqlplus: startup mount;
sqlplus: ALTER DATABASE
RENAME file
'/u01/app/oracle/mysid/oldname.dbf'
TO
'/u01/app/oracle/mysid/newname.dbf'
RMAN data file rename
In RMAN, you can rename a data file like this:
- SET NEWNAME – This command can be used to rename the data files to be
restored to a new location. It is equivalent to the db_file_name_convert
parameter of the server initialization parameter file. Combination of the
SET NEWNAME and SWITCH command is the equivalent of the ALTER DATABASE
RENAME FILE statement.
- CONFIGURE AUXNAME – CONFIGURE AUXNAME is equivalent to the SET NEWNAME
command, except that the CONFIGURE AUXNAME is persistent, whereas, the SET
NEWNAME command must be used every time the DBA wants to rename a data file.
It is necessary to connect to the recovery catalog in order to use the
CONFIGURE AUXNAME command.
See my related notes on renaming data files:
