ORA-16816: incorrect database role

admin

ORA-16816: incorrectdatabase role
Cause: The Data Guard broker detected that the specifieddatabase 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 aswitchover or
failover operation performed with SQL*Plus.
Action: Checkthe 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.