Oracle Error Message
ORA-16816: incorrect database role
Reason for the Error
The Data Guard broker detected that the specified database had a different database role than that recorded in the Data Guard broker configuration. This could be the result of a failed switchover or failover operation, or a switchover or failover operation performed with SQL*Plus.
Check the Data Guard broker documentation to see how to recover from failed role change operations, or from role changes that were performed using SQL*Plus for databases managed by Data Guard broker.