Thanks for the reply. My objective is to copy (not move) all the data (including tables) from one tablespace to another. I don't think Exchange Partition does it for me. On Wed, Nov 26, 2008 at 1:15 AM, Dennis Williams < oracledba.williams@xxxxxxxxx> wrote: > Amir, > > Are any of your tables really large? I saw a demonstration years ago where > EXCHANGE PARTITION was used to change the ownership of a table. > Basically you can use EXCHANGE PARTITION to switch the ownership. You first > exchange the table into a partition, then exchange that partition to another > table owned by another user. Since this is just a dictionary change, there > is no execution delay. I haven't needed to try this myself, but haven't > heard this mentioned in awhile. > > Dennis Williams >