DIA-28075：The data redaction policy expression has an error.

解决方法：Contact the data redaction policy administrator. To correct this error, when invoking the ADD_POLICY and ALTER_POLICY procedures of the data redaction DBMS_REDACT package, the policy administrator must specify a valid policy expression for the EXPRESSION parameter. Check the trace file for the name of the affected policy and the error, and correct the data redaction policy expression.