ORA-31132: Cannot validate handler "string"."string"
Cause: Attempted to invoke an invalid event handler. This can be a result of one of the following reasons: 1) The handler did not exist. 2) The handler could not be compiled successfully.
Action: Verify that the named handler does exist, then recompile and fix all compilation errors that may subsequently arise.
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ORA-31132Cannot validate handler "string"."string"