Oracle : Ошибка ORA-24909

"call in progress. Current operation cancelled"
*Cause: The OCI call was invoked when another call on the connection was
in progress.
*Action: Check if the OCI call is supported when the call is in progress
under special conditions; for example, if it is being used by a
signal handler.
NLS_DO_NOT_TRANSLATE [24910,24910]

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