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ORA-30502: system triggers cannot have INSERT, UPDATE, or
DELETE as triggering events



ORA-30502: system triggers cannot have INSERT, UPDATE, or DELETE as triggering events..

Answer / guest

Cause: An attempt was made to create a system trigger with
INSERT, UPDATE, or DELETE triggering events, but this type
of trigger is not supported because a system trigger does
not have a base table.

Action: Do not attempt to create a system trigger with
INSERT, UPDATE, or DELETE triggering events.

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