When attempting to create an XA connection to WebSphere® MQ from either WebSphere Application Server Version 7.x or Version 8.x with a connection factory that uses the Client Channel Definition Table (CCDT), the following error appears in the application server's SystemOut.log file: [
] J2CA0056I: The Connection Manager received a fatal connection error from the Resource Adaptor for resource
The reason why it is not possible to use the CCDT with XA connections is related to transaction recovery.
If the application server stops while there are still active transactions, there is no way with the current implementation to ensure that it will connect to the same queue manager when it restarts. This can lead to in-doubt transactions being left dangling, and never resolved.
It is hoped that this restriction will be resolved in future releases of WebSphere Application Server and WebSphere MQ.
Resolving The Problem
The use of the Client Channel Definition Table (CCDT) with XA connections is not supported.
WMQ WASAS WAS
15 June 2018