Solved - unable to fetch log error in Informatica

unable to fetch log.

[CORE_003][CORE-003] An internal exception occurred with message: [LGS_10052] The Log Service has no record of the requested session or workflow run.\n

Quick Solution - Check Workflow logs instead - This mostly happens when the session was never started, workflow logs will have a reason as to why the session was not triggered.

Check your Parm files, probably something could be missing there which caused session not to start properly

This message is due to the fact that the session didn't start and thus Informatica is not able to locate the associated log files.

If you review your Workflow log file then you should be able to see why the session didn't start as expected. --- Always related to Parameters/Variables values.

I could be due to various reasons namely.

1) Missing Initial value for session Parameter.

    Implies Parameter defined in Mapping doesn't have an initial value.

2) or

    Implies Parameter/Variable is missing from Mapping or parm file.
3) or

4) or