If your going to remove all of the records in the table and desire to free up the
extents, wouldn't it be faster to drop the table and recreate it?
ROR m���m
>>> [EMAIL PROTECTED] 08/15/01 10:56AM >>>
Chuan,
You can use the 'REUSE STORAGE' clause of truncate table. That's a heck of
a lot faster if you have a whole load of extents allocated to the table.
What it does is mark the table as empty and keep all extents.
However, I have a feeling that if you really want to release all storage,
you'll have to suffer through the complete truncation (without reuse
storage). I don't know if there's a way around that.
HTH
Lisa Koivu
Am I an Idiot? (and DBA)
Ft. Lauderdale, FL, USA
> -----Original Message-----
> From: Chuan Zhang [SMTP:[EMAIL PROTECTED]]
> Sent: Wednesday, August 15, 2001 4:10 AM
> To: Multiple recipients of list ORACLE-L
> Subject: Speed up Truncate tables
>
> Hi All,
>
> Is there any way to speed up the truncating a big table with 12
> million
> rows?
>
> Basically, I implemented truncating that big table on Production, but it
> affected the performance much, so I had to stop it in the middle of way.
> All
> the rows were truncated but the HWM was not shrunk at all. I want to do it
> again to get the space back. Is there any way to speed up this process?
>
> Platform: Oracle EE8.0.6 and Solaris 2.7
>
> Thanks a lot in advance.
>
> Chuan
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Chuan Zhang
> INET: [EMAIL PROTECTED]
>
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