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Re: Informix crashing UNIX on HP

Posted in 1997

David Williams — — source: Informix-list mailing list archive (1991-1998)

In article <611s01$f56@cssun.mathcs.emory.edu>, Silvester_Valiente@tnt.com.au writes >I had never heard of this problem before on HP. We have been running >7.20 - 7.22 >for over a year with as many as 10 x 8 Mb extents at one time (ie >during heavy load). > >Unfortunately there is no messages in the message log. Unix panics and crashes >On the system console we get a > > "Stored message buffer up to panic: > vuseg=810000" > >and the Unix box shutdowns and restarts!! > >The curious thing is that I can allocate Virtual mem using onmode -a >and release >it via onmode -F. But when I monitor the mem segments with onstat -g seg >and I see that the free blocks are almost all exhausted Informix will >at this point >cause the box to reboot. > >TIA > >Silvester Valiente >Informix DBA >TNT Australia >---------- >From: mdstock >To: informix-list >Subject: Re: Informix crashing UNIX on HP >Date: Friday, 3 October 1997 12:19 > ><<File Attachment: REINFORM.TXT>> >Silvester_Valiente@tnt.com.au wrote: >> >> Has anyone had an experience where Informix 7.23 UC4 caused Unix to >> Panic and shutdown. >> There are known bugs in HP-UX 10.01 which cause Online to have problems. these are bugs in HP-UX 10.01 handling of shared memory. Make sure you are running at least 10.10 and preferably 10.20 (if available). >> We are experiencing the problem when the virtual portion of a shared >> memory >> extent is becoming full. >> >> I am able to manually add virtual segments using onmode -a. > >Eeek, I haven't seen it bring OnLine down. What is the specific error? >Make sure you don't allocate more than ONE VIRT segment on an HP box. >This is normally just a performance issue, but could be your problem? > >Cheers, >-- >Mark. > >+----------------------------------------------------------+-----------+ >|Mark D. Stock - Informix SA http://www.informix.com |//////// /| >|mailto:mdstock@informix.com FAQ http://www.iiug.org |///// / //| >| +-----------------------------------+//// / ///| >| Tel: +27 11 807 0313 |If it's slow, the users complain. |/// / ////| >| Fax: +27 11 807 2594 |If it's fast, the users keep quiet.|// / /////| >|Cell: +27 83 250 2325 |Therefore, "No news: travels fast"!|/ ////////| >+----------------------+-----------------------------------+-----------+ > -- David Williams

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