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| jpw |
 Posted: Sat Aug 31, 2002 4:45 am Post subject: Queue file size limit on OS/390 |
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Newbie
Joined: 28 Jul 2002
Posts: 5
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Hi,
Does anyone know what is the limit of queue file size in MQSeries v5.2 for
OS/390.
I know that for some Unix platforms it is 2GB per single queue.
Is it the same for OS/390?
JPW |
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| mgrabinski |
| Posted: Mon Sep 02, 2002 9:31 pm Post subject: |
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Master
Joined: 16 Oct 2001
Posts: 246
Location: Katowice, Poland
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There is no limit for message queue file size on OS/390 (z/OS). The queues are held in page sets which are VSAM datasets. You can have up to 100 of them, and each can be as large as your volume space will allow.
There is however limit on the number of messages in a queue - 999999999, and the size of a individual message is limited to 104857600 bytes.
The numbers I supplied are valid for version 5.2
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Marcin Grabinski <>< |
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| oz1ccg |
| Posted: Mon Sep 02, 2002 11:08 pm Post subject: |
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Yatiri
Joined: 10 Feb 2002
Posts: 628
Location: Denmark
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Well, that it true but the filesize is limited to 4GB in version 5.3, so a single queue can be as big as 4 GB.
This was found in Concepts and Planning Guide for version 5.3 for MQS:
| Quote: |
WebSphere MQ page sets can be up to 4 GB in size. Each page set is identified by
a page set identifier (PSID), an integer in the range 00 through 99. |
just my $0.02 
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Home of BlockIP2, the last free MQ Security exit ver. 3.00
Cert. on WMQ, WBIMB, SWIFT. |
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| vennela |
| Posted: Tue Sep 03, 2002 6:38 am Post subject: |
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Jedi Knight
Joined: 11 Aug 2002
Posts: 4055
Location: Hyderabad, India
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| 4 GB is the limit. We hit the limit here a couple of times (with 5.2). |
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| RogerLacroix |
| Posted: Tue Sep 03, 2002 8:24 pm Post subject: |
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Jedi Knight
Joined: 15 May 2001
Posts: 3264
Location: London, ON Canada
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One more comment about MQ on OS/390.
A single queue cannot span more than one pageset. A queue can belong to a Storage Class (STGCLASS). A Storage Class can only reside on one pageset (Pagesets are numbered 00-99 - maximum of 100).
Therefore, by definition, a queue can only reside in one pageset.
later
Roger...
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| zpat |
| Posted: Tue Feb 13, 2007 1:12 am Post subject: |
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Jedi Council
Joined: 19 May 2001
Posts: 5866
Location: UK
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| Is it still a max size queue of 4GB in MQ 5.3.1 on z/OS? |
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| atulzain |
| Posted: Tue Feb 13, 2007 6:57 am Post subject: |
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Newbie
Joined: 12 Jan 2007
Posts: 3
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| and the wht is the Q size in winNT in ver 6.0 |
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| jefflowrey |
| Posted: Tue Feb 13, 2007 6:58 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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big enough.
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I am *not* the model of the modern major general. |
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