Oracle Tips by Burleson Oracle10g Rename Tablespace

Oracle Tips by Burleson
Oracle10g Rename Tablespace

Another great new feature in tablespace management is rename tablespace.
Tablespace Rename Overview

In Oracle 10g, you can simply rename a tablespace TBS01 to TBS02 by issuing the following command:

ALTER TABLESPACE tbs01 RENAME TO tbs02;

However, you must follow the rules when renaming a tablespace:
You must set compatibility level to at least 10.0.1.
You cannot rename the SYSTEM or SYSAUX tablespaces.
You cannot rename an offline tablespace.
You cannot rename a tablespace that contains offline datafiles.
Renaming a tablespace does not changes its tablespace identifier.
Renaming a tablespace does not change the name of its datafiles.
Tablespace Rename Benefits

Tablespace rename provides the following benefits:
It simplifies the process of tablespace migration within a database.
It simplifies the process of transporting a tablespace between two databases.
Examples

Example 1: Rename a tablespace within a database. In Oracle9i or earlier releases, you must take the following steps to rename a tablespace from OLD_TBS to NEW_TBS:
Create a new tablespace NEW_TBS.
Copy all objects from OLD_TBS to NEW_TBS.
Drop tablespace OLD_TBS.

In Oracle 10g, you can accomplish the same thing in one step and rename tablespace OLD_TBS to NEW_TBS.

ALTER TABLESPACE old_tbs RENAME TO new_tbs;

Example 2: Transport a tablespace between two databases. In the following example (see figure 3.2), you cannot transport a tablespace TBS01 from database A to database B in the previous release of Oracle server because database B also has a tablespace called TBS01. In Oracle 10g, you can simply rename TBS01 to TBS02 in database B before transporting tablespace TBS01.