For more info: http://download.oracle.com/docs/cd/B19306_01/server.102/b14231/tables.htm#sthref2297 http://download.oracle.com/docs/cd/B19306_01/server.102/b14200/statements_3001.htm#i2085301 Note that the ONLINE option is only for IOTs so DML will be blocked on regular tables, but I think you can still query from it during the move. Also, you'll need to rebuild the indexes and gather stats afterwards. If you want to move it without interrupting DML, you can use online table redefinition: http://download.oracle.com/docs/cd/B19306_01/server.102/b14231/tables.htm#i1006754 Regards, Brandon nderstood as neither given nor endorsed by it. ________________________________ Privileged/Confidential Information may be contained in this message or attachments hereto. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of this company shall be understood as neither given nor endorsed by it.