Write Backward Compatible Session Log File(Informatica Session Property Settings)

If ‘Write Backward Compatible Session Log File’ option is checked under Informatica Session Property Settings then it will write the workflow or session logs into a text file (You can find the Session Log under server directory: ...\infa_shared\SessLogs).

If the ‘Write Backward Compatible Log File’ option is not checked then the Integration Service creates the binary log only (session log files are in binary format by default.).So if you don’t give backward compatible session log files then it will give a binary format of the session log file.