RE: Export - can I use a hint or set a session level value?
- From: <JayMiller@xxxxxxxxxxxxxxxx>
- To: <jkstill@xxxxxxxxx>
- Date: Fri, 26 May 2006 18:43:58 -0400
Yes, I assumed that that is the reason the plan changed, I'm just trying
to figure out the best way to change it back since it's taking much
longer now.
Thanks,
Jay Miller
Sr. Oracle DBA
x68355
-----Original Message-----
From: Jared Still [mailto:jkstill@xxxxxxxxx]
Sent: Friday, May 26, 2006 5:34 PM
To: Miller, Jay
Cc: oracle-l@xxxxxxxxxxxxx
Subject: Re: Export - can I use a hint or set a session level value?
Some possibilities come to mind.
*) your data has changed significantly, and statistics are stale
*) your data has not changed, but statistics were run incorrectly and
confused the optimizer
*) your data has changed, statistics are current, but the data is now
skewed and the index
is no longer optimal
From your WHERE clause it appears that this export is a month-end
process.
Could it be that a significant amount of data was added during April?
Just some things to consider.
Jared
On 5/26/06, JayMiller@xxxxxxxxxxxxxxxx < JayMiller@xxxxxxxxxxxxxxxx
<mailto:JayMiller@xxxxxxxxxxxxxxxx> > wrote:
I'm considering this. The main problem here is our Change Management
system. Any DDL needs to be approved and go through a change meeting.
Thanks,
Jay Miller
Sr. Oracle DBA
x68355
-----Original Message-----
From: GovindanK [mailto:gkatteri@xxxxxxxxxxx]
Sent: Friday, May 26, 2006 4:34 PM
To: Miller, Jay; oracle-l@xxxxxxxxxxxxx
Subject: RE: Export - can I use a hint or set a session level value?
Why not you create another table based on the rows meeting this criteria
and export the same.
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Jared Still
Certifiable Oracle DBA and Part Time Perl Evangelist
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