ORA-02294: cannot enable (string.string) -constraint changed during validation
Cause: While one DDL statement was attempting to enable this constraint, another DDL changed this same constraint.
Action: Try again, with only one DDL changing the constraint this time.
Cause: While one DDL statement was attempting to enable this constraint, another DDL changed this same constraint.
Action: Try again, with only one DDL changing the constraint this time.
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