I shoud add that, I am well aware of the fact that the extra long messages should use separate channels so they would not slow down the transmission of the short messages.
I am very interested in knowing how big messages other people are transmitting. Ruzi --- Ruzi R <[EMAIL PROTECTED]> wrote: > Hi all, > > Our platform is WMQ 5.3 CSD3 for NT. We have WMQ > server on two machines with qmgrs QM1 and QM2. The > machine that has the QM1 has 2GB memory and 36GB > disk > space (2 * 36 GB mirrored), and the other machine > (having QM2) has 4GB memory and 16GB disk space. > > We are dealing with 2 different vendors on both > sides > of the transmission. Developers on QM1 are > receiving messages (from the vendor1 not via MQ > though) well over 60MB and want to send it to > vendor2 > on QM2 without making their messages any smaller (by > grouping, segmentation etc. and they say the > compression could not be handled by the receiving > end). Buying a third party product for anything is > out > of the question for the company at the moment : ((. > They (the developers) do not know the max msg length > that they would be getting from vendor1. I > personally > don t understand how someone cannot know the > possible > max msg length they are dealing with. As far as I > am > concerned, the limits should always be known in any > interface. These people keep asking us to increase > the > msg length almost every other week in > production!!!. > They ask me to set the msg length to 20K for > instance > and then I find messages for that queue in the DLQ > with the datalength over 60K! Now they are asking me > to temporarily increase one of the queues to 500MB > (as > if MQ can handle it!!!) And all these messages are > persistent! I know, writing them to a disk at both > ends, commiting/rollbacking, starting the qmgrs with > this big messages to be restored on their respective > queues would eventually cause a performance hit. > They > have already gotten a Java.Lang.OutOfMemoryError for > a > 3MB message. I have no idea how these interfaces > passed the different levels of testing up to the > production. I have just started dealing with these > interfaces > > I would like to know if any of you had to deal with > really big messages (over couple of MBs). If so, > what > kinds of problems did you have? What is the max msg > length do you allow in Prod? The answer to the last > question depends on the capacity of the machines > among > other things, but I just would like to get an idea > to > better defend my position on the issue. > > Thanks very much for any input, in advance. > > Ruzi > > Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive
