We have a QMGR (vers 1.2) that has several full-volume Page Sets, which are 3322 cylinders. One of these page sets has 20 local queues on it. One in particular is highly active, and it has a max depth of 300,000 msgs. It has a batch trigger depth of 150,000. When it reaches 150,000, a batch job is submitted which drains the msgs off to a sequential file. Previously this job copied to tapes, but it now copies to dasd.
This QMGR is highly active, and it has 12 online logs that are 1,100 cyls each. Recently there have been two occasions when we received a Page Set Full condition for the page set that contains these 20 queues. At the time of this condition, the highly active queue only had 60,800 msgs in it with an average msg size of 551 bytes. There was 1 msg that was over 32K. One of the other 20 queues had 1,000 msgs in it with an average msg size of 500 bytes. These are all persistent msgs. This page set has 598,822 pages on it. And, at the full condition, the 'DISPLAY USAGE PSID(06)' command did show zero pages available. Our client will not accept that the page set was full, and they are calling it an MQ problem. At the time of the page set full condition, all of the tape drives were in use. 4 of the 12 online logs had become full. We do not think that 4 full online logs could be related to this page set full condition when there were 8 more logs available. IBM is suggesting this problem might be related to messages marked for Expiry, and the scavenger task not running. I do not think that this client is using the Expiry option for deleting messages. The system may have been pegged at the time of this condition, but the QMGR runs in a high Service Class. IBM suggested we look into APAR PQ44887. Does anyone have any suggestions. Thanks in advance Stewart Herd Senior Software Engineer Systems Engineering Services ACS NSC Campus Loughmahon Technology Park Cork Ireland Office.... +353 21 2309331 Mobile.... +353 86 1713777 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
