Oracle : Ошибка ORA-12629

"TNS:no event test"
*Cause: An attempt to register a connection for event notification failed
because the ability to test for events is not available.
*Action: Not normally visible to the user. For further details, turn
on tracing and reexecute the operation and contact Oracle Customer

Попробовать перевести

Поискать эту ошибку на форуме