Oracle : Ошибка ORA-27411


27411, 0000, "empty string is not a valid repeat interval."
*Cause: An empty string '' was provided as a repeat interval for a window
or a schedule.
*Action: Specify a valid repeat interval, e.g.,
'FREQ=DAILY;BYHOUR=8;BYMINUTE=0;BYSECOND=0' for a job that executes
daily at 8am.

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