ASG
IBM
Zystems
Cressida
Icon
Netflexity
 
  MQSeries.net
Search  Search       Tech Exchange      Education      Certifications      Library      Info Center      SupportPacs      LinkedIn  Search  Search                                                                   FAQ  FAQ   Usergroups  Usergroups
 
Register  ::  Log in Log in to check your private messages
 
RSS Feed - WebSphere MQ Support RSS Feed - Message Broker Support

MQSeries.net Forum IndexClusteringMessage in SCRQ deleted

Post new topicReply to topic
Message in SCRQ deleted View previous topic :: View next topic
Author Message
ramesh80
PostPosted: Tue Dec 18, 2018 2:30 am Post subject: Message in SCRQ deleted Reply with quote

Novice

Joined: 22 Oct 2018
Posts: 20

I have 4 qm's in cluster 2 Fr's and 2 PR's on 4 seperate aix servers.
i had to stop these qmgrs for aix upgrade activity, which i did one by one on each server.
i had suspended the qm3(PR) from cluster and stopped the qmgr, once the activity is done
i had started the qmgr and issued resume QMgr on QM3.

i followed the same process on all qmgrs.
after restart i see that the messages in the SCRQ has come down from 100 to 5, is this normal?

I checked the dis clusqmgr, and the clus objects which are fine.
i believe the SCRQ contains information about the qmgr and its cluster objects..i have 2 questions..

1.Have the information about the queue manager and its objects have been deleted from the Repository queue?
2.The process i chose to stop/start the qmgrs is correct?

I did all this on TEST env..so wanted to be clear before i do it on PROD.
Back to top
View user's profile Send private message
bruce2359
PostPosted: Tue Dec 18, 2018 4:20 am Post subject: Reply with quote

Poobah

Joined: 05 Jan 2008
Posts: 9394
Location: US: west coast, almost. Otherwise, enroute.

PRs contain information about objects it has expressed interest in.

PR cluster objects definitions not referenced will “stale out” after 90 days (or is it 60?). When the deleted objects are next referenced by PRs, the FR will resupply the PR with the cluster object definition.

Sounds like normal behavior.
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live.
Back to top
View user's profile Send private message
ramesh80
PostPosted: Tue Dec 18, 2018 5:25 am Post subject: Reply with quote

Novice

Joined: 22 Oct 2018
Posts: 20

Thank Bruce, but i see the messages on FR's SCRQ are also deleted after the restart..
Back to top
View user's profile Send private message
bruce2359
PostPosted: Tue Dec 18, 2018 6:25 am Post subject: Reply with quote

Poobah

Joined: 05 Jan 2008
Posts: 9394
Location: US: west coast, almost. Otherwise, enroute.

Did you see any errors logged in the error files for any of the qmgrs?
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live.
Back to top
View user's profile Send private message
hughson
PostPosted: Tue Dec 18, 2018 1:31 pm Post subject: Re: Message in SCRQ deleted Reply with quote

Padawan

Joined: 09 May 2013
Posts: 1914
Location: Bay of Plenty, New Zealand

ramesh80 wrote:
after restart i see that the messages in the SCRQ has come down from 100 to 5, is this normal?

Yes. Periodically, repository code will combine multiple small messages into fewer large messages. When new repository state is written to the queue, i.e. there's a new cluster queue, this is written immediately as one small message, but when the whole queue is read, say at start up, it is more efficient if it can be read as fewer messages (same data), so this consolidation is done periodically. It is normal behaviour.

Cheers,
Morag
_________________
Morag Hughson @MoragHughson
IBM MQ Technical Education Specialist
Get your IBM MQ training here!
MQGem Software
Back to top
View user's profile Send private message Visit poster's website
ramesh80
PostPosted: Wed Dec 19, 2018 1:45 am Post subject: Reply with quote

Novice

Joined: 22 Oct 2018
Posts: 20

Thanks Hugson, for the detailed explanation
Back to top
View user's profile Send private message
PeterPotkay
PostPosted: Thu Dec 20, 2018 4:14 pm Post subject: Reply with quote

Poobah

Joined: 15 May 2001
Posts: 7717

On a test cluster, issue the refresh cluster command while watching the depth of the S.C.R.Q.

Issue it again. Wait a bit. Again. Wait a bit. Watch the queue depth - interesting! The internal cluster workings are managing the messages on the S.C.R.Q. (as Morag described) and we can't assume anything about the size or depth of that queue. Well, if it was empty I guess that would be a serious problem.

Don't do the above on a "real" cluster. The Refresh Cluster command can be disruptive to application traffic.
_________________
Peter Potkay
Keep Calm and MQ On
Back to top
View user's profile Send private message
Display posts from previous:
Post new topicReply to topic Page 1 of 1

MQSeries.net Forum IndexClusteringMessage in SCRQ deleted
Jump to:



You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
Protected by Anti-Spam ACP


Theme by Dustin Baccetti
Powered by phpBB 2001, 2002 phpBB Group

Copyright MQSeries.net. All rights reserved.