MQSeries.net :: View topic - URGENT !!! Does MQSI handle application-segmented messages ?

MVO · Posted: Fri Jun 14, 2002 5:30 am Post subject:

Hi, I opened this problem with IBM tech support did not get much help !!!

I'm running MQSI 2.0.2 on Solaris 2.8

A remote program puts messages into my queue. I don't know the put options they are using, but it looks like the application program segments the message. On my queue, the message arrives into 2 segments with same group ID, MQMDE values are follows:
Seg1: Logical Seq# 1, Offset 0, MsgFlag 8 (message is part of a group)
Seg2: Logical Seq# 2, offset 0 , MsgFlag 24 (message is part of a group, this is the last segment)

My MQInput node has the following properties:
Transaction: Yes, Logical Order: Yes, All available message: Yes

MQSI did NOT get the whole message, it read the 1st segment, processed it, then read and processed the 2nd segment separately.
I turned on the "Commit Group" option in MQInput, now MQSI waits until another message with a different group ID arrives to commit the first transaction !!!

However MQSI did read all segments of a message when I put a long message into the queue using the MQ API. I have the put option SEGMENTATION_ALLOWED on therefore the message was segmented by the queue manager. The MQMDE of my message's segments look like this:
Seg1: Logical Seq# 1, Offset 0, MsgFlag = message segmentation allowed+message is part of a logical message
Seg2: Logical Seq# 2, offset 0 , MsgFlag =message segmentation allowed+message is part of a logical message+this is the last segment of a logical message

Does it mean MQSI only support queue-manager segmented messages ?

IBM tech support suggested me to either:
1) develop a customized MQInput node (anybody has done this ?)
2) develop a program to get the whole message then put it to a queue to be processed by MQSI.

Any help will be very appreciated.