An alias queue is an WebSphere MQ object that refers to another queue. The object to which the alias is pointing can be changed without affecting the client application, which continues to reference the alias.
This recording approach can be used where the publishing application uses a queue alias name rather than an actual queue name.
In Queue Aliasing mode, when recording starts, IBM Rational® Integration Tester creates a topic automatically and reconfigure the queue alias to publish to the topic. Rational Integration Tester then sets up two subscribers to the topic:
- One subscriber is the original queue (so that the subscriber still receives the message).
- The other subscriber is a queue that is used for Recording Studio.
When recording is stopped, Rational Integration Tester reconfigures the queues back to the original configuration.
If it is not possible (for example, if there is an open connection to the alias), Rational Integration Tester displays a warning message that it could not reconfigure. In such cases, manual reconfiguration by using the queue manager is required.
Alternatively, starting and stopping the recording again will force Rational Integration Tester to reattempt the reconfiguration. However, it can be attempted only after you disconnect the applications that are holding open any connections to the queue alias.