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Re: Database slowdown after 100 days uptime

From: Don Jerman <djerman_at_dot.state.nc.us>
Date: Tue, 29 May 2001 06:59:10 -0700
Message-ID: <F001.00311C2D.20010529063055@fatcity.com>


Keep an eye on free memory -- one of our similar systems has to be restarted every 60 days to prevent the behaviour you're encountering. We haven't determined the source of the memory leak, but if we permit it to continue eventually the DB stops responding and cannot be shut down. This system does some analytical work for us so it has different connection and activity profiles than the others, so I've a limited basis for comparison, but the other 8.1.5 databse (this one's data source) shows similar problems over a longer period.
My plan is to take it up to 8.1.7 as those systems are not showing that sort of problem.
"Reardon, Bruce (CALBBAY)" wrote:

> Hi,
>
> We're running Oracle 8.1.5.1.1 on NT 4.
>
> On Saturday our database started getting much slower
> - to me, there didn't seem to be any major events showing up in
> v$session_wait, v$session_event
>
> Restarting the database instance and service solved the performance
> problems.
>
> Today, when reviewing logs of the queries I noticed that the database had
> been up for 100 days when it started slowing.
>
> The 100 days uptime may be unrelated, but has anyone seen this behaviour on
> any platform?
>
> For information, the server itself has been up for 242 days (240 days when
> the problem started occurring).
>
> Thanks,
> Bruce Reardon
> mailto:bruce.reardon_at_comalco.riotinto.com.au
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Reardon, Bruce (CALBBAY)
> INET: Bruce.Reardon_at_comalco.riotinto.com.au
>
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Received on Tue May 29 2001 - 08:59:10 CDT

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