An administrator notices that the Message Driven Beans (MDBs) are slow to complete, and decides to increase the "˜Maximum concurrent MDB invocations per endpoint'.
Which thread pool should be tuned to ensure it can run the maximum number of MDBs without waiting?
The appropriate thread pool to tune for running the maximum number of Message Driven Beans (MDBs) without waiting is the SIBJMSRAThreadPool. This thread pool specifically handles the resource adapter's threading for MDBs related to the messaging provider, ensuring that sufficient threads are available for message processing, thereby improving the performance of MDBs.
The correct, I think is C
https://www.ibm.com/docs/en/was/8.5.5?topic=messaging-tuning-performance-default-provider Answer is C