ORA-23381: generated object for base object string.string@string does not exist

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ORA-23381: generated object for base object string.string@string does not exist
Cause: The system generatedobject(s) for the specified base object do not exist at
the specified site. The current operation requires the base object to havegenerated
replication support.
Action: Ensure that the generatedreplication object(s) for the base object exist and
are valid at the specified site. If the generated object(s) do not exist, thenthe
procedure dbms_repcat.generate_replication_support() needs to be called fromthe
master definition site for the base object. missing_rows_oname1 argument. The
separately created table will contain the differences between the tables being
compared.