Re: Repository of MQSeries Cluster

[Wyatt, T. Rob]

Kritsana,   Did you manually define both CLUSSDR channels between QM1 and QM2?  Repository information is replicated across explicitly defined CLUSSDR channels only.    See the manual page at: http://publibfp.boulder.ibm.com/epubs/html/csqzah06/csqzah0617.htm#HDRCSQ6849 which states in part...   The full repositories republish the publications they receive through the manually-defined CLUSSDR channels, which must point to other full repositories in the cluster. You must make sure that a publication received by any full repository ultimately reaches all the other full repositories. You do this by manually defining CLUSSDR channels between the full repositories. The more interconnection of full repositories you have, the more robust the cluster.   There are some other pertinent details in the section on "Organizing A Cluster" right below the quoted passage.   -- T.Rob   -----Original Message----- From: Kritsana [mailto:[EMAIL PROTECTED]] Sent: Sunday, January 12, 2003 11:35 AM To: [EMAIL PROTECTED] Subject: Repository of MQSeries Cluster Dear all,       I have a question about Repository of MQSeries Cluster.         I have 4 Queue Managers (QM1, QM2, QM3, QM4) on 4 computers.     I create a MQSeries cluster, which named QMCLUS, of these 4 Queue Manager.     I assign repository cluster of QMCLUS to QM1 and QM2.      ** Note QM1 is a primary repository **      QM3 and QM4 only join to the QMCLUS cluster.         QM3 and QM4 have pre-defined cluster sender channel to only QM1.      Because of they automatically create cluster sender channel to QM2.       In QM1 and QM2, I define cluster queue, named cluster.lq, and share them to QMCLUS cluster.     So, I can see those cluster queue (cluster.lq) in QM3 and QM4.       When I stop only QM2, I still see cluster queue (cluster.lq) in QM3 and QM4.     But when I stop only QM1, I can not see cluster queue (cluster.lq) in QM3 and QM4.       This means MQSeries Clustering is only used for Load balancing, not for redundancing.       ** Note I try to create pre-defined cluster sender channel to QM2 on QM3 and QM4.         But it still the same result. ***       But, When I try to assign repository of QMCLUS cluster to QM3 and QM4.      I can see the cluster queue (cluster.lq) on QM3 and QM4 when I stop QM1.      So I can stop whatever Queue Managers of QMCLUS cluster. ( Now it works in redundancing and load balancing mode).       I wonder why I must to assign repository to all Queue Managers.      Because, in the manual it recommends to assign only 2 repository in one cluster for reduce     traffic of clustering information exchange.   Regards, Kritsana Loaboonsup System Programmer