I saw mention of this post by Morag.

But, I have a suspicion that in some cases, it might not be such a good idea not to restart every so often.
I am working with a customer CASE where they restart their MQ Z/os Servers ONLY twice a year.
I am wondering if this may relate to the exhaustion of the ALETs in their System.
Per the customer:
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I looked at the PASN-AL for ASID 1 and yes, it appears to be full. (510 Access List Entries allowed minus your MAXCAD value in IEASYSxx).
Looking at the entries, 238 of them would appear to be ALETs referencing 2 specific address spaces:
MQA1MSTR (ASID 15E)
MQI3MSTR (ASID 382)
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They are running MQ V9.1 on Z/os, and I have not seen any other customer suffering this issue.
Thanks,
Eli
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Eli Adler
Technical Support
IBM
Markham ON
905-316-3219
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