Tip

Move a table from one tablespace to another

There are many ways to move a table from one tablespace to another. For example, you can create a duplicate table with dup_tab as select * from original_tab; drop the original table and rename the duplicate table as the original one.

The second option is exp table, drop it from the database and import it back. The third option (which is the one I am most interested in) is as follows.

Suppose you have a dept table in owner scott in the system tablespace and you want to move in Test tablespace.

connect as sys
ora816 SamSQL :> select table_name,tablespace_name from dba_tables where table_name='DEPT' and owner='SCOTT';

TABLE_NAME                     TABLESPACE_NAME
------------------------------ ------------------------------
DEPT                           SYSTEM

Elapsed: 00:00:00.50

You want to move DEPT table from system to say test tablespace.

ora816 SamSQL :> connect scott/tiger
Connected.
ora816 SamSQL :> alter table DEPT move tablespace TEST;

Table altered.

Elapsed: 00:00:00.71

ora816 SamSQL :> connect
Enter user-name: sys
Enter password:
Connected.
ora816 SamSQL :> select table_name,tablespace_name from dba_tables where table_name='DEPT' and owner='SCOTT';

TABLE_NAME                     TABLESPACE_NAME
------------------------------ ------------------------------
DEPT                           TEST

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This was first published in May 2001

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