Page Set Dynamic Extension Question

[Ward Able, Grant]

Hi MQListers,
MQV 7.1 info states that a pageset can be extended up to a maximum of 119 times.
http://www-01.ibm.com/support/knowledgecenter/?lang=en#!/SSFKSJ_7.1.0/com.ibm.mq.doc/zc12670_.htm

However, today I found a pageset that had been extended 124 times. Is this an error in the doc, or is my MQ monitoring software (MainView) reporting this incorrectly?



Regards – Grant.
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[Lizette Koehler]

I think the confusion is between VSAM and MQ Page Set.



VSAM itself can span a lot of extents today. 119 extents was the old limitation.



I did find this

The extents can span volumes if the linear data set is defined in this way, however, WebSphere MQ cannot expand the page sets beyond 64 GB



I would do a LISTC on the page set VSAM dataset name and look at the HARBA and HURBA values and make sure they are within the 64GB range if that is still a restriction. Maybe Mainview is reporting based on that. Also see how many extents the page set is using. ISPF 3.4 can show you the number of extents as well.



Lizette





From: MQSeries List [mailto:MQSERIES-0lvw86wZMd9k/bWDasg6f+***@public.gmane.org] On Behalf Of Ward Able, Grant
Sent: Thursday, October 16, 2014 3:42 AM
To: MQSERIES-0lvw86wZMd9k/bWDasg6f+***@public.gmane.org
Subject: Page Set Dynamic Extension Question



Hi MQListers,

MQV 7.1 info states that a pageset can be extended up to a maximum of 119 times.

http://www-01.ibm.com/support/knowledgecenter/?lang=en#!/SSFKSJ_7.1.0/com.ibm.mq.doc/zc12670_.htm



However, today I found a pageset that had been extended 124 times. Is this an error in the doc, or is my MQ monitoring software (MainView) reporting this incorrectly?







Regards – Grant.

Telephone External: [phone]


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[Ian]

MQ allows for 123 expansion on a PSID. I think that count is independent
from the VSAM limits.

Where do you see the 124 number?

Look at message CSQP013I :

CSQP013I: csect-name NEW EXTENT CREATED FOR PAGE SET psid. NEW EXTENT WILL
NOW BE FORMATTED

Explanation

Page set psid has been successfully dynamically expanded by creating a new
extent.
Severity

0
System action

The new extent is formatted; message CSQI031I will be issued when
formatting completes successfully.
System programmer response

The page set can only be expanded 123 times. After this you will have to
reallocate the page set using larger primary and secondary extents. For
information about managing page sets, see Managing page sets
<http://www-01.ibm.com/support/knowledgecenter/api/content/SSFKSJ_7.1.0/com.ibm.mq.doc/za12100_.htm>
.

Post by Lizette Koehler
I think the confusion is between VSAM and MQ Page Set.
VSAM itself can span a lot of extents today. 119 extents was the old limitation.
I did find this
The extents can span volumes if the linear data set is defined in this
way, however, WebSphere MQ cannot expand the page sets beyond 64 GB
I would do a LISTC on the page set VSAM dataset name and look at the HARBA
and HURBA values and make sure they are within the 64GB range if that is
still a restriction. Maybe Mainview is reporting based on that. Also see
how many extents the page set is using. ISPF 3.4 can show you the number
of extents as well.
Lizette
Behalf Of *Ward Able, Grant
*Sent:* Thursday, October 16, 2014 3:42 AM
*Subject:* Page Set Dynamic Extension Question
Hi MQListers,
MQV 7.1 info states that a pageset can be extended up to a maximum of 119 times.
http://www-01.ibm.com/support/knowledgecenter/?lang=en#!/SSFKSJ_7.1.0/com.ibm.mq.doc/zc12670_.htm
However, today I found a pageset that had been extended 124 times. Is this
an error in the doc, or is my MQ monitoring software (MainView) reporting
this incorrectly?
Regards – Grant.
Telephone External: [phone]
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[Bill Johnson]

zOS MQ V7.1

Is there any way to tell who and how a queue was cleared? We also have the BMC middleware management tool (formerly QPASA) and MQ Explorer.

TIA,

Bill J.

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[Petri kaunisto]

I'm guessing you'd need to have event monitoring activated on the
queuemanager for this to be visible .

Med vÀnliga hÀlsningar / Best regards


Petri Kaunisto
Senior System Engineer
Output mgmt & Standard Integration Services
Sandvik IT Services AB

SE-811 81 Sandviken, SWEDEN





Bill Johnson




From: Bill Johnson
<00000012badc4eb8-dmarc-***@LISTSERV.MEDUNIWIEN.AC.AT>
To: ***@LISTSERV.MEDUNIWIEN.AC.AT
Date: 2014-10-17 13:33
Subject: Who and How a queue was cleared?
Sent by: MQSeries List <***@LISTSERV.MEDUNIWIEN.AC.AT>




zOS MQ V7.1

Is there any way to tell who and how a queue was cleared? We also have the
BMC middleware management tool (formerly QPASA) and MQ Explorer.

TIA,

Bill J.

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in the message body (not the subject), write: SIGNOFF MQSERIES
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[Norbert Pfister]

Hi Bill,

if you talk about the MQSC command CLEAR QLOCAL:
yes, it can be found in the log datasets.

Just select the appropriate log by utility CSQ1LOGP detail report:
http://www-01.ibm.com/support/knowledgecenter/SSFKSJ_7.1.0/com.ibm.mq.doc/za14150_.htm
I think it will be found in DDNAME CSQOBJS.

We once found out an errant utility job in this way (with help by IBM
support).

Regards Norbert

2014-10-17 13:30 GMT+02:00 Bill Johnson <

Post by Bill Johnson
zOS MQ V7.1
Is there any way to tell who and how a queue was cleared? We also have the
BMC middleware management tool (formerly QPASA) and MQ Explorer.
TIA,
Bill J.
in the message body (not the subject), write: SIGNOFF MQSERIES
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[Barry Lamkin]

[Jackson, Richard R.]

For nonstriped VSAM data sets, you can specify in the SMS data class parameter whether to use primary or secondary allocation
amounts when extending to a new volume. You can expand the space for a nonstriped VSAM component to 255 extents.

For SMS-managed VSAM data sets, this extent limit is removed if Extent Constraint Removal is specified in the Data Class.
The theoretical limit is then the maximum number of volumes (59), times 123 extents per volume, or 7257 extents.

Also beware of “VSAM Extent Consolidation”

http://pic.dhe.ibm.com/infocenter/zos/v2r1/index.jsp?topic=%2Fcom.ibm.zos.v2r1.idad400%2Freduce.htm

From: MQSeries List [mailto:***@LISTSERV.MEDUNIWIEN.AC.AT] On Behalf Of Ian
Sent: Thursday, October 16, 2014 2:28 PM
To: ***@LISTSERV.MEDUNIWIEN.AC.AT
Subject: Re: Page Set Dynamic Extension Question

MQ allows for 123 expansion on a PSID. I think that count is independent from the VSAM limits.

Where do you see the 124 number?

Look at message CSQP013I :

CSQP013I: csect-name NEW EXTENT CREATED FOR PAGE SET psid. NEW EXTENT WILL NOW BE FORMATTED
Explanation
Page set psid has been successfully dynamically expanded by creating a new extent.
Severity
0
System action
The new extent is formatted; message CSQI031I will be issued when formatting completes successfully.
System programmer response
The page set can only be expanded 123 times. After this you will have to reallocate the page set using larger primary and secondary extents. For information about managing page sets, see Managing page sets<http://www-01.ibm.com/support/knowledgecenter/api/content/SSFKSJ_7.1.0/com.ibm.mq.doc/za12100_.htm>.



On Thu, Oct 16, 2014 at 6:17 AM, Lizette Koehler <***@mindspring.com<mailto:***@mindspring.com>> wrote:
I think the confusion is between VSAM and MQ Page Set.

VSAM itself can span a lot of extents today. 119 extents was the old limitation.

I did find this
The extents can span volumes if the linear data set is defined in this way, however, WebSphere MQ cannot expand the page sets beyond 64 GB

I would do a LISTC on the page set VSAM dataset name and look at the HARBA and HURBA values and make sure they are within the 64GB range if that is still a restriction. Maybe Mainview is reporting based on that. Also see how many extents the page set is using. ISPF 3.4 can show you the number of extents as well.

Lizette


From: MQSeries List [mailto:***@LISTSERV.MEDUNIWIEN.AC.AT<mailto:***@LISTSERV.MEDUNIWIEN.AC.AT>] On Behalf Of Ward Able, Grant
Sent: Thursday, October 16, 2014 3:42 AM
To: ***@LISTSERV.MEDUNIWIEN.AC.AT<mailto:***@LISTSERV.MEDUNIWIEN.AC.AT>
Subject: Page Set Dynamic Extension Question

Hi MQListers,
MQV 7.1 info states that a pageset can be extended up to a maximum of 119 times.
http://www-01.ibm.com/support/knowledgecenter/?lang=en#!/SSFKSJ_7.1.0/com.ibm.mq.doc/zc12670_.htm

However, today I found a pageset that had been extended 124 times. Is this an error in the doc, or is my MQ monitoring software (MainView) reporting this incorrectly?



Regards – Grant.
Telephone External: [phone]<tel:%2B44%20%280%29207%20650%201496>

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--
Ian
http://www.cicsworld.com

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