Distributed ttransaction with Oracle and MQseries

Hi,
I am leveraging a Tuxedo architecture on HP-UX IA64 that utilizes two XA resource managers, MQSeries and Oracle. The use of the resource managers is based on a coordinated 2 phase commit method (TPBEGIN - TPCOMMIT).
The application running on tuxedo has beem migrated from Mainframe environment (z/OS + CICS + DB2 + MQ)
The systems functionally works, , but we continue to experience major performance issues, caused by the fact that in the original application migrated from the CICS environment executes an high number of syncpoint(s).
What is observable is that increasing the number of parallel processes (tuxedo servers), the cost of the single syncpoint is much greater than the cost of an atomic elaboration (atomicity) of that same transaction.
Ex., if the cost of an elaborated transaction is 2 ms, the cost of syncpoint is 30 ms.
Because we were not able to solve the proble just changing configuration parameters, in this specific case, we have simply reduced the number of syncpoints executed by the application so to lower the cost of syncpoint to the same rate as a transaction.
Is it possible to have a reference or information on similar use cases of mission-critical Tuxedo/UNIX environments with high volumes? (Millions of transactions)?
Is it possible to understand if there are parameters that can be set/established at a configuration level in Tuxedo (ubbconfig or others) to deal with the above-stated issue?
Thanks in advance for any helpful feedback
Regards
Roberto

There are a couple of major and minor mistakes in your listener.ora like specifying 2 times the listener name LISTENER. Using 2 different hostnames on the same machine or specifying the ENVS=LD_LIBRARY_PATH for a Windows Gateway as well as the executable you defined.
I tried to summarize it in your original thread bust recommend you to log a service request.

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>
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