you're taking statspack snapshots, you can also find the non-default
parameters captured in the statspack repository. I don't remember the
exact table in the STATS$ tables, but it shouldn't be that hard to find
if you're really desperate (and you're taking regularly-scheduled
Original Message ----
From: Andrew Kerber <andrew.kerber@xxxxxxxxx>
Sent: Wednesday, August 8, 2007 8:43:04 AM
Subject: Re: History on dynamic parameters
There should be a record of the changes in the alert log if you can
find the entries from that far back.
On 8/8/07, jurgen_mortier@xxxxxxxx
I'm a junior DBA and I have an Oracle 188.8.131.52.0 running on Solaris 8
has been restarted on July 28th (by my collegue currently on FTO) to
- shared_pool_reserved_size= from 60M to 100 M
- shared_pool_size= from 600M to 1000M
- undo_retention= from 1800 to 3600
Since then users report that queries are running twice as long as
On August 2nd I tried to change back the last 2 parameters (since they
dynamic), but the CKPT process was consuming 1 complete CPU and I was
forced to reboot the system on the 3rd. At that time I changed the
parameters back to 600M and 1800 seconds.
Since that didn't improve the response time, I started realizing that
dynamic parameters might have been changed dynamically without the init
file being updated.
Does anyone know of a way to find back the history of those (dynamic)
parameters (accross DB restarts) ?
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Andrew W. Kerber
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