Just as a final comment, the trace we sent to IBM showed that the reason this huge memory was being allocated was due to a setting in the qmstatus.ini file :
[EMAIL PROTECTED]=2403899684 MQ V5.2 uses this field to allocate the appropriate memory the next time the queue manager is started. When we finally did get it to work, it showed [EMAIL PROTECTED]=7372032 I believe it was the upgrade process that somehow increased this value. Our contact at IBM stated that CSD2 introduced some code related to the qmstatus.ini file, but although other customers have suffered similar problems, IBM have not been able to get to the bottom of it. I've agreed to close the pmr, but asked IBM what additional info to capture if it were to happen again: prior to upgrading to CSD4 (maybe even a prior version) take a copy of your qmstatus.ini file, and compare it afterwards. One final word of caution for users of the Candle agent for MQ. The trace we sent IBM had some 'bad MQ return codes' in it which were being issued by the agent. We're currently awaiting info from Candle to ensure that the agent's code (and library files) are compatible with CSD4. Regards ... Ruud -----Original Message----- From: Ruud van Zundert [mailto:[EMAIL PROTECTED]] Sent: 22 June 2002 17:54 To: MQSeries List Subject: RE: CSD4 MQ5.2 on Sun - huge memory usage Thanks, Jim - looks like we're not alone. I'll check that Apar you mentioned. Anyone else seen this as well? Anyone from IBM like to comment? Cheers ... Ruud -----Original Message----- From: MQSeries List [mailto:[EMAIL PROTECTED]]On Behalf Of Jim Ford Sent: 22 June 2002 16:40 To: [EMAIL PROTECTED] Subject: Re: CSD4 MQ5.2 on Sun - huge memory usage I had this exact problem on CSD3 for Solaris. IBM spent 6 weeks "investigating" it, and eventually wanted me to put on an efix. But it was our most important production box that was getting the worst of the problem, and actually crashing every 6-8 hours. So I had long since backed off CSD3 and gone back to CSD1. We haven't had any problems at this level whatsoever, before or since. I believe that the APAR that IBM said described the problem was IY29497, but I'm not 100% certain. Like I said, we took the coward's way out and retreated. I do see that IY29497 is fixed on CSD5, so that would indicate that you're running with this exposure. Hope this helps. Ruud van Zundert <[EMAIL PROTECTED] To: [EMAIL PROTECTED] OM> cc: Sent by: MQSeries Subject: CSD4 MQ5.2 on Sun - huge memory usage List <MQSERIES@AKH-WIE N.AC.AT> 06/22/02 03:56 AM Please respond to MQSeries List Dear all - we're currently rolling out CSD4 for MQ 5.2 onto our Sun, AIX and Windows servers; we were running without any maintenance. Progress has been good, and I'm particularly pleased that the MQ shutdown problems we had on our Sun boxes has been cured. No problems have been encountered in the DEV and UAT environments. We have just started to upgrade the production Sun boxes, and when the queue manager was restarted, the listener soon failed ('could not bind to port 1414'). An FDC was created around the same time stating 'no memory'. The IPCS command showed that MQ had allocated a huge amount of memory, with one segment being over 2GB!!! (Apologies for not having all the details, but I'm writing this away from the client site). One Sun box was rebooted, and this 'cured' the problem. A second box was rebooted, but the 2GB memory was allocated again. Please note that only one queue manager runs on each box, and the kernel settings are as per the Quick Beginnings guide. Anyone seen this before? Regards ... Ruud Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive
