Oracle Error Codes

target standby database in broker operation has potential data loss

The target standby database in the broker operation did not have all the redo logs from the primary database. The switchover or protection mode upgrade to maximum protection could not be performed.

How to Solve :

Query the SendQEntries monitorable property on the primary database to see which redo logs are missing. Confirm that the redo transport service on the primary database is functioning correctly by checking its status using the StatusReport monitorable property. Perform log switches on the primary database in order to activate the redo log gap fetching mechanism. Once all redo logs are available on the target standby database, reissue the broker command.