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Undocumented but appears to relate to obtaining a safe System Change Number off the stack for use with DataPump.
Owned by SYS with EXECUTE granted to the EXECUTE_CATALOG_ROLE and LOGSTDBY ADMINISTRATOR roles
DBLINK IN VARCHAR2,
DBVERSION IN VARCHAR2,
COMPATIBILITY IN VARCHAR2,
INTEREST OUT BOOLEAN,
COOKIE IN OUT VARCHAR2);
-- a test seems to indicate that this must be run from within a datapump job
c VARCHAR2(200) := 'TEST';
dbms_internal_safe_scn.need_scn('','22.214.171.124','18.1.0', b, c);
ERROR at line 1:
ORA-31623: a job is not attached to this session via the specified handle
ORA-06512: at "SYS.DBMS_DATAPUMP", line 4750
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 79
ORA-06512: at "SYS.DBMS_DATAPUMP", line 4497
ORA-06512: at "SYS.DBMS_DATAPUMP", line 5950
ORA-06512: at "SYS.DBMS_STREAMS_DATAPUMP_UTIL", line 18
ORA-06512: at "SYS.DBMS_STREAMS_DATAPUMP_UTIL", line 80
ORA-06512: at "SYS.DBMS_STREAMS_DATAPUMP", line 219
ORA-06512: at "SYS.DBMS_INTERNAL_SAFE_SCN", line 44
ORA-06512: at line 5