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Re: Oracle 817 freezing

From: Stephane Faroult <sfaroult_at_roughsea.com>
Date: Mon, 22 Jan 2007 21:54:13 +0100
Message-ID: <45B52475.20908@roughsea.com>


Dick,

    I have seen something similar, but with shared servers (obviously not your case - your reference to dedicated servers is presumably not by opposition to shared servers), but perhaps the reason for the freeze is related.
In my case, the shared pool was too small (although the large pool was adequate). Instead of returning ORA-I don't know how much as it should have, Oracle exhibited exactly the behavior you describe. I couldn't reproduce it in 9.2.

Stéphane Faroult

Richard J. Goulet wrote:
> Has anyone seen the following condition in 8.1.7 on Solaris 9, all 64
> bit:
>
> 1: The database appears to be frozen. New connections do not
> reject, but don't come back to the client either.
> 2: Dedicated server processes amount to ~ 150 sessions where the
> db process and sessions limits are up around 400
> 3: Database will not shutdown immediate even after half an hour of
> waiting. Must use shutdown abort.
> 4: Cannot see what v$lock contains. Connection as sysdba comes
> back to a command prompt, but about the only thing you can do is abort
> the instance.
> 5: Memory(vmstat) appears normal, cpu loading is low and idle is high.
> 6: Sar does not indicate any disks being hit for anything. Io
> appears to be non existent.
> 7: Alert log does not contain anything outside of the normal redo
> switching activity. No user dump files either.
>
>
>
> Dick Goulet, Senior Oracle DBA
>
> 45 Bartlett St Marlborough, Ma 01752, USA
> /Tel.:/ 598.573.1978 |F/ax: / 508.229.2019 | Cell:508.742.5795
>
> RGoulet_at_kanbay.com <mailto:RGoulet_at_kanbay.com>
>
> : POWERING TRANSFORMATION
>
>

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Received on Mon Jan 22 2007 - 14:54:13 CST

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