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Reduce size or recreate undo tablespace
Hi,
I notice that my UNDO datafile has grown from 200MB to 1GB. I tried to reduce the size but it doesn't allow. How can I strink the file back to 200MB or drop and recreate back? I'm not allow to offline the tablespace and thus cannot delete.
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To recreate:
1. Create a new undo tablespace
2. Change the 'undo_tablespace' parameter to the new tablespace name.
3. Drop the old tablespace (obviously you will have to have no active transactions in this tablespace before you can do this)
Jim
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jovery,
For no.2, how to change the 'undo_tablespace' parameter to new tablespace? Tks.
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Alter system set undo_tablespace = new undo_tablespace
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