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MQSeries.net Forum IndexIBM MQ Installation/Configuration SupportCFLEVEL parm on MQ CFSTRUCT def (MQ z/OS V9)

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allenm
PostPosted: Wed Sep 25, 2019 4:43 pm Post subject: CFLEVEL parm on MQ CFSTRUCT def (MQ z/OS V9) Reply with quote

Newbie

Joined: 08 Jan 2018
Posts: 8

what CFLEVEL value on a CFSTRUCT definition is required that will allow a CF structure to expand if the CFRM policy has ALLOWAUTOALT(YES) on the structure definition? We have CFLEVEL(3) and the structure did not expand as anticipated...there were no error messages and there is plenty of space available in the CF. I'm beginning to think CFLEVEL(5) is required although I cannot find any doc on it. thanks.
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hughson
PostPosted: Wed Sep 25, 2019 8:01 pm Post subject: Reply with quote

Grand Master

Joined: 09 May 2013
Posts: 1253
Location: Bay of Plenty, New Zealand

I can't find anything that states the CFLEVEL requirement either, but I did find one example (in MP16) showing CFLEVEL(4) used with ALLOWAUTOALT(YES).

Cheers,
Morag
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bruce2359
PostPosted: Thu Sep 26, 2019 3:37 am Post subject: Re: CFLEVEL parm on MQ CFSTRUCT def (MQ z/OS V9) Reply with quote

Poobah

Joined: 05 Jan 2008
Posts: 8501
Location: US: west coast, almost. Otherwise, enroute.

allenm wrote:
We have CFLEVEL(3) and ...

Really? You're at CFLEVEL(3)? 3 is quite old.
https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.4.0/com.ibm.zos.v2r4.ieaf100/cfopl.htm contains this:

Quote:
PR/SM Planning Guide provides information about the functions available with each CFLEVEL of a coupling facility, model-dependent limits, and other characteristics such as performance, storage allocation, and operations.

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HubertKleinmanns
PostPosted: Thu Sep 26, 2019 3:58 am Post subject: Re: CFLEVEL parm on MQ CFSTRUCT def (MQ z/OS V9) Reply with quote

Yatiri

Joined: 24 Feb 2004
Posts: 696
Location: Germany

bruce2359 wrote:
Really? You're at CFLEVEL(3)? 3 is quite old.


To be precisely: CFLEVEL(3) came with MQv5.3 and allows only messages less than 63 kB size.

The next levels are:

- CFLEVEL(4) - came with MQv6 and allows messages up to 100 MB (stored in DB2).

- CFLEVEL(5) - came with MQv7.1 and allows messages up to 100 MB (stored in DB2 or SMDS).

- CFLEVEL(19) - came with MQv8 and allows messages up to 100 MB (stored in DB2, SMDS or SCM).
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bruce2359
PostPosted: Thu Sep 26, 2019 4:51 am Post subject: Reply with quote

Poobah

Joined: 05 Jan 2008
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Location: US: west coast, almost. Otherwise, enroute.

There are hardware and z/OS VRM support considerations. There are higher CFLEVELs than 19.
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HubertKleinmanns
PostPosted: Thu Sep 26, 2019 5:57 am Post subject: Reply with quote

Yatiri

Joined: 24 Feb 2004
Posts: 696
Location: Germany

bruce2359 wrote:
There are hardware and z/OS VRM support considerations. There are higher CFLEVELs than 19.


Yes, but I mentioned the minimum CFLEVELs, to handle messages of the described size and persistency, and the MQ version, where these have been introduced.

To complete the list: CFLEVEL 1 and 2 came with MQv5.2 and allowed only non-persistent messages up to 63 kB. CFLEVEL higher than 2 allow persistent messages too.
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