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| Rogerkoh |
 Posted: Fri Sep 07, 2007 8:43 pm Post subject: Event Broker with MSCS Clustering |
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Newbie
Joined: 07 Sep 2007
Posts: 8
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Hi everyone,
-I have to cluster 2 IBM websphere message brokers servers with MSCS.
-I have managed to setup and enable the broker to failover to each other (between server A and server B).
Hence, I tried to use a pub/sub program to test the broker. I manage to test successfully on server A (i.e. able to pub and sub). However, when it failover to server B, the program is unable to sub/pub. No errors were shown in the event logs.
Does anyone encounter this before?
Or what are the possible problems?
Thanks in advance for all your time.
Last edited by Rogerkoh on Sat Sep 08, 2007 7:30 pm; edited 1 time in total |
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| jefflowrey |
| Posted: Sat Sep 08, 2007 4:14 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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What does it mean "unable to pub/sub"?
Unable how?
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I am *not* the model of the modern major general. |
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| Rogerkoh |
| Posted: Sat Sep 08, 2007 6:32 am Post subject: |
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Newbie
Joined: 07 Sep 2007
Posts: 8
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Hi jefflowrey,
What I mean is when the queue manager and message broker failsover to server B, I cannot publish/subscribe anymore.
It seems to be unable to connect to the queue manager or broker.
I am using the same program which can publish and subscribe successfully when the queue manager and message broker was in server A.
May I know the possible problems?
Thanks for your time.
Last edited by Rogerkoh on Sat Sep 08, 2007 7:32 pm; edited 1 time in total |
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| jefflowrey |
| Posted: Sat Sep 08, 2007 9:25 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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What does it mean, "fail to connect"?
How do you know?
Does your program produce an error message?
What is it?
What does the documentation say on the error message?
What information did you provide your program, to know where the broker and the queue manager are?
Is that still correct when the broker and queue manager have failed over to the other server?
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| Rogerkoh |
| Posted: Sat Sep 08, 2007 9:35 am Post subject: |
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Newbie
Joined: 07 Sep 2007
Posts: 8
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The program works fine when the broker and queue manager fails back to server A.
The same set of queue manager and broker works fine in server A, but not in server B.
Hence, my question is simply to ask what are the possible problems given this kind of situation.
Thanks
Last edited by Rogerkoh on Sat Sep 08, 2007 7:33 pm; edited 1 time in total |
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| fjb_saper |
| Posted: Sat Sep 08, 2007 10:31 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Broker log?
System log?
Qmgr error log?
JMS Error messages?
Linked exceptions and such?
SYSTEM.JMS queue depths?
Publishing queue depths?
Subscription queue depth?
Is the pub/sub process even running after failover?
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MQ & Broker admin |
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| Rogerkoh |
| Posted: Sat Sep 08, 2007 10:52 am Post subject: |
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Newbie
Joined: 07 Sep 2007
Posts: 8
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May I know what do u mean by "Is the pub/sub process even running after failover?"
I have check the event logs, and broker event logs. There are no errors shown.
May I know what are the steps should I do to zoom in to the problem?
Thanks for all your time.
Last edited by Rogerkoh on Sat Sep 08, 2007 7:35 pm; edited 1 time in total |
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| fjb_saper |
| Posted: Sat Sep 08, 2007 10:54 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| fjb_saper wrote: |
Qmgr error log?
JMS Error messages?
Linked exceptions and such?
SYSTEM.JMS queue depths?
Publishing queue depths?
Subscription queue depth?
Is the pub/sub process even running after failover? |
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| Rogerkoh |
| Posted: Sat Sep 08, 2007 10:57 am Post subject: |
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Newbie
Joined: 07 Sep 2007
Posts: 8
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Thanks.
Last edited by Rogerkoh on Sat Sep 08, 2007 7:36 pm; edited 1 time in total |
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| jefflowrey |
| Posted: Sat Sep 08, 2007 2:32 pm Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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Are you reading the responses we are giving you?
You want a list of possible causes... there are LOTS of possible causes. Any one of the potential error messages that the WebSphere MQ product could produce is a possible cause.
Any one of the potential error messages that the Event Broker product could produce is a possible cause.
There are hundreds of each of those. IBM has helpfully provided you a list of them, in the documentation on both products. Well, okay. Event Broker doesn't come with a list in the Info Center - there's an HTML file in the product directory that is a list.
Based on our own experience, there are some things that are more likely than others.
If you take the time to read the questions I've asked, and try and answer them - you may find out what the cause is.
If you take the time to read the questions that fjb_saper has asked, you may find out what the cause is.
If you do nothing other than keep asking us for help, then you will never find out what the cause is.
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| Rogerkoh |
| Posted: Sat Sep 08, 2007 7:25 pm Post subject: |
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Newbie
Joined: 07 Sep 2007
Posts: 8
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Hi jefflowery & fjb_saper,
Oh I see. I get what u mean now.
Thanks. I understand now. Thanks for ur advice.
I will find out all the answers to both of your questions.
Thanks a lot.  |
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