| ERROR | unsupported dml encountered |
| CAUSE | DML to tables in the SYS schema have been updated and are not part of a DDL operation. This may be due to some DBA activity or DML associated with a kernel PL/SQL request that Logical Standby does not yet support. |
| ACTION | Check the DBA_LOGSTDBY_EVENTS table for the name of the table being processed. Possibly use Log Miner to understand the transaction, and provide a compensating transaction on the standby system. Once complete, call DBMS_LOGSTDBY.SKIP_TRANSACTION with the associated transaction id, and resume apply. |