MQSeries.net :: View topic - SIMULTANEOUS ACCESS TO QUEUE MANAGER FROM MULTIPLE THREADS?

KAKEZ · Posted: Fri May 23, 2003 9:36 am Post subject:

Hi,

I read in the mqseries "Websphere MQ Using Java" documentation, page 72, subject "Multithreaded programs":

<The implementation of WebSphere MQ classes for Java ensures that, for a given connection (MQQueueManager object instance), all access to the target WebSphere MQ queue manager is synchronized. Therefore, a thread wishing to issue a call to a queue manager is blocked until all other calls in progress for that connection are complete.

If you require simultaneous access to the same queue manager from multiple threads within your program, create a new MQQueueManager object for each thread that requires concurrent access. (This is equivalent to issuing a separate MQCONN call for each thread.)>

Please I would like to know if it is true, as said in the documentation shown above that within a Java application several threads may each create a new MQQueueManager object and issu a separate MQCONN, get a specific Hconn and so be able to have concurrent connections to the same QMGR at the same time?

It was long to explain but very important when thinking about how to get performance when running several threads within an application.

Other thing, that is only possible with Java appli and not possible with a C or C++ appli?

Thanks for help.
Jack