Cause: A failover causes this snapshot standby database to enter a state that requires it to be re-created if another failover occurs before it is converted back to a physical standby database. See the solution below.
Error solution: Reenable the snapshot standby database if it is disabled and convert it back to a physical standby database as soon as possible because the snapshot standby database will have to be re-created if another failover occurs while it is in this state.
Database version: Oracle 11g Release 2 (11.2)