Replaying an input log to diagnose problems
When you start the correlator, you can specify that you want it to copy all incoming messages to a special file, called an input log. An input log is useful if there is a problem with either the correlator process or an application running on the correlator. If there is a problem, you can reproduce correlator behavior by replaying the messages captured in the input log. Incoming messages include the following:
![*](bullet1.png)
Events
![*](bullet1.png)
EPL
![*](bullet1.png)
Java
![*](bullet1.png)
Correlator Deployment Packages (CDPs)
![*](bullet1.png)
Connection, deletion, and disconnection requests
If you are unable to diagnose the problem, you can provide the input log to Software AG Global Support. A support engineer can then feed your input log into a new correlator to try to diagnose the problem.
The information in the following topics describes how to generate and use an input log: