 |
|
Data Guard Role transition Tips
Oracle Tips by Burleson Consulting
December 9, 2011
|
Oracle Data Guard -
Switchover and Failover role
transition
Role transition is an integral part of the Data
Guard environment. In this chapter, the concept behind role
transitions and the implementation specifics was presented in
detail.
The following topics were covered in detail to
assist in the case of disaster recovery or a switchover needed to
allow the DBA to do routine maintenance activities:
-
Concepts of switchover and failover
were presented followed by a quick list of disadvantages of role
transition to a logical standby database.
-
A brief description of how to
determine the best Oracle instance
for role transition.
-
The nitty-gritty of role
transitions to physical and logical standby databases.
-
Verification of role transition.
A role transition should always be
accompanied with changes in Oracle Net configuration to route the
requests from applications to the new primary database. A limited
amount of information on the Transparent Application Failover
provides an alternate approach in configuring Oracle Net to handle
such situations.
More information regarding role transitions can
be found in Oracle manuals and from the MOSC site at
MOSC.oracle.com. This chapter marks the end of the basic concept
and administration of standby databases. By now the techniques used
to create and manage a simple Data Guard environment should be
familiar.
The upcoming chapters will deal with advanced
concepts like Performance Tuning, Using Oracle Data Guard Broker and
Recovery Manager for Standby Databases.
|
