Re: online crash
Posted in 1995
That's interesting - I saw that same error about two hours ago during
an Informix DSA 7.1 Performance Tuning course here in Sydney (using
7.1.UD3 on an HP Kittyhawk)
We thought it occured as a result of using tbmode -F (to free unused
memory segments) just after an "update statistics high" and didn't try
it again. I no longer have access to the error log but there was
definitely a message like "Assert Failed: Internal Error -
Segmentation Violation" with a "PANIC: Attempting to bring system
down".
I don't know if your support is handled via the Sydney office - if it
is you might refer them to their own message log!
regards
Gavin Nour
rswa@perth.DIALix.oz.au (Radio Spares) wrote:
>Dear All,
>I have come across this problem with online 7.10.UC1 on a Spacr 5 running
>Solaris 2.4. I have a cursor that does a count on 1 table with a where cause
>of 1 = 1. The count works but when the cursor is closed it brings the
>engine down (see online log below).
>This program worked fine on version 5 of informix and the problem has only
>happened since the upgrade. I have test 100's of other programs on the new
>engine and they all work fine. It just appears to be this one.
>The RDS is 6.01.UD3. I have contacted informix support and they are working on
>this but if anyone else knows of this problem and how to fix it I would
>appreciate the help.
>Also I have installed the patches listed in the machine notes for
>this release biut they have made no difference to this problem.
>TIA
>Jason Harris (RSWA)
>--Excerpt from online.log
>09:10:43 INFORMIX-OnLine Initialized -- Shared Memory Initialized.
>09:10:44 Physical Recovery Started.
>09:10:44 Physical Recovery Complete: 0 Pages Restored.
>09:10:44 Logical Recovery Started.
>09:10:44 Logical Recovery allocating 10 worker threads ('OFF_RECVRY_THREADS').
>09:10:48 Logical Recovery Complete.> 0 Committed, 0 Rolled Back, 0 Open, 0 Bad Locks
>09:10:49 Dataskip is now OFF for all dbspaces
>09:10:49 Quiescent Mode
>09:10:49 Checkpoint Completed: duration was 0 seconds.
>09:10:52 On-Line Mode
>09:11:53 Assert Failed: Internal Error - Segmentation Violation
>09:11:53 Who: Session(9, jasonh@rsdev, 557, 6)
> Thread(74, scan_10.0, a03b380, 1)
>09:11:53 Results: OnLine must abort
>09:11:53 Action: Reinitialize shared memory
>09:11:53 See Also: /tmp/af.37fead, shmem.37fead.0
>09:12:05 rsdebug.c, line 3557, thread 74, proc id 542, Segmentation Violation.
>09:12:05 PANIC: Attempting to bring system down
>-- end of excerpt
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Gavin Nour. Mobile: (Australia) 0419 803 113
Director, Select Software Solutions Pty Ltd
Secretary, Informix User Group NSW, Australia.
Committee member, International Informix User Group
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