Not sure exactly what you are looking for in the log, no records, or do you put values to the log?
Either way, if this is for data trouble shooting, I would simply copy/paste the log to a separate document.
If your process is too complicated to handle with standard DI Studio tools/techniques, perhaps try to run the job in Enterprise Guide, where you additional options for program output, as well with simpler ways to ad-hoc query the intermediate results from any data set in your job.
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