In this post, you’ll learn more about the Oracle ErrorORA-02294: cannot enable (string.string) – constraint changed during validation with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-02294: cannot enable (string.string) – constraint changed during validation
Reason for the Error ORA-02294: cannot enable (string.string) – constraint changed during validation
While one DDL statement was attempting to enable this constraint, another DDL changed this same constraint.
How to fix the Error ORA-02294: cannot enable (string.string) – constraint changed during validation ?
You can fix this error in Oracle by following the below steps
Try again, with only one DDL changing the constraint this time.