OGG-06638
LCRs from SCN: {0,number,0}, timestamp: {1} to SCN: {2,number,0}, timestamp: {3} have been purged.
Cause
The logical change records (LCRs) in the specified SCN range have been purged based on the Shared Capture Service's change table retention period.
Action
Reposition Extract to a valid SCN and restart Extract.