Re: ASSM bug: slow INSERT after uncomitted DELETE

From: Jonathan Lewis <>
Date: Thu, 13 Aug 2009 10:33:49 +0100
Message-ID: <>

"Mladen Gogala" <> wrote in message news:h5vf1r$nnq$
> On Mon, 10 Aug 2009 20:37:35 -0700, Noons wrote:
>> Perhaps even more significantly, if you delete only a portion of the
>> table instead of the lot, then the second session's insert is not
>> affected. Normally, I would expect anyone wanting to clear a table to
>> truncate it, as opposed to deleting all rows: truncate is far more
>> efficient.
> Unfortunately, in the situations where you want to delete everything
> older than 60 days, truncate is not an option.
> --

It is if you partition by day and use only local indexes ;)

Really, this discussion is only picking up the point that we need to know that each feature has some side effects that may need special consideration.


Jonathan Lewis

Author: Cost Based Oracle: Fundamentals

The Co-operative Oracle Users' FAQ
Received on Thu Aug 13 2009 - 04:33:49 CDT

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