Re: Fastest way to drop tablespace

From: DA Morgan <>
Date: Fri, 04 Apr 2008 09:33:22 -0700
Message-ID: <>

suri wrote:
> Hi,
> we have very big tablespace 300GB containing 300000 tables and we want
> to drop them. We don' t need
> the contents, so no need to recover them.
> What is the fastest way and less load for the DB to drop it? We have
> Oracle on HP-UX 11.11
> We did 2 small tests on lab. The first one is the usual "drop
> tablespace including contents" and the 2nd one
> we put the DB files to offline first and then drop the tablespace. We
> traced both methods. The 2nd method is
> much faster. The different to the first method is that drops the
> tablespace without take the db files offline has
> lot of "enqueue" wait events.
> We are wondering what is Oracle doing internally in both methods? and
> is it so that dropping a tablespace by
> first taking the DB file offline is always faster.
> Thanks,
> Suri

Take the tablespace offline.
Drop the tablespace including contents and datafiles.

Daniel A. Morgan
Oracle Ace Director & Instructor
University of Washington (replace x with u to respond)
Puget Sound Oracle Users Group
Received on Fri Apr 04 2008 - 11:33:22 CDT

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