ORA-28515: cannot get external object definitions from string
Cause: ORACLE was unable to retrieve definitions of distributed external procedures or remote libraries registered for the non-Oracle system instance, probably because the underlying data dictionary table does not exist or is malformed
Action: Verify that the ORACLE server's Heterogeneous Services data dictionary was installed correctly. If the Heterogeneous Services data dictionary is not installed, execute the CATHS.SQL script in the $ORACLE_HOME/rdbms/admin directory
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