Oracle Error Message
ORA-31461: logfile location string contains no files that match pattern string
Reason for the Error
The directory specification for logfile location for the change source, does not contain any files whose names pattern-match the logfile_suffix.
Solution
1. Make sure that the logfile 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