Oracle : Ошибка ORA-12838

"cannot read/modify an object after modifying it in parallel"
*Cause: Within the same transaction, an attempt was made to add read or
modification statements on a table after it had been modified in parallel
or with direct load. This is not permitted.
*Action: Rewrite the transaction, or break it up into two transactions:
one containing the initial modification and the second containing the
parallel modification operation.

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