Oracle : Ошибка ORA-28753

"failure to terminate use of data source"
*Cause: The system failed to terminate its use of a data source. This error may
have been caused by memory or disk corruption, among other things.
*Action: Enable tracing to determine the exact cause of this error.
Contact Oracle customer support if needed.

Попробовать перевести

Поискать эту ошибку на форуме