ORA-31461: logfile location string contains no files that match pattern string Cause: The directoryspecification for logfile location for the change source, does
not contain any files whose names pattern-match the logfile_suffix. Action: 1. Make sure that thelogfile location contains logfiles whose names match
the logfile_suffix pattern for the change set. OR 2. perform ALTER CHANGE
SOURCE and change the logfile_suffix such that it matches the names of existing
logfiles in the directory