To prevent possible problems, you must be aware of events on the primary database that affect a standby database and learn how to respond to them. This section describes these events and the recommended responses to these events.
In some cases, the events or changes that occur on a primary database are automatically propagated through redo data to the standby database and thus require no extra action on the standby database. In other cases, you might need to perform maintenance tasks on the standby database.
Table 8-1indicates whether or not a change made on the primary database requires additional intervention by the database administrator (DBA) to be propagated to the standby database. It also briefly describes how to respond to these events. Detailed descriptions of the responses are described in the section references provided.
The following events are automatically administered by redo transport services and Redo Apply, and therefore require no intervention by the database administrator: