The Library is currently in the process of being upgraded from Oracle Database Version 188.8.131.52 to 184.108.40.206.
Demos are being upgraded to reflect the new Container paradigm as well as EBR (Edition Based Redefinition) and may contain references to CDBs, PDBs,
and other objects you may not be familiar with such as CDB_OBJECTS_AE: Welcome to 12c.
Also important ... there are rumors on the web about SPARC and Solaris being discontinued. Welcome to the age of fake news.
There is absolutely not a byte of truth to these irresponsible rumors.
Undocumented but appears to relate to Data Guard Physical Standby DataPump Support
Owned by SYS with EXECUTE granted to EXECUTE_CATALOG_ROLE and SELECT_CATALOG_ROLE roles.
Demo code doesn't fail but neither is there an output
obj_name IN VARCHAR2,
obj_schema IN VARCHAR2,
obj_type IN NUMBER,
tgt_version IN VARCHAR2,
action OUT VARCHAR2,
alt_name OUT VARCHAR2,
where_clause OUT VARCHAR2);