Oracle : Ошибка ORA-16247

"DDL skipped on internal schema"
*Cause: Logical Standby ignores DDLs on internal schemas such as
SYS and SYSTEM. For a complete list of internal schemas ignored
by Logical Standby perform the following query:
SELECT owner FROM dba_logstdby_skip
WHERE statement_opt = 'INTERNAL SCHEMA'.
*Action: No action necessary, this informational statement is provided
to record the event for diagnostic purposes.

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