failover data guard oracle 12c

1. How do you failover in Oracle Data Guard?
2. What is Active Data Guard 12c?
3. What is the difference between failover and switchover?
4. What is fast start failover in Oracle Data Guard?
5. What is fast failover?
6. How do I change from primary to standby database?
7. What is the difference between Data Guard and GoldenGate?
8. What is the difference between Active Data Guard and Data Guard?
9. How do I know if my Active Data Guard is enabled?
10. How does Oracle Data Guard work?
11. What does failover mean?
12. How do you use DR drill in Oracle?

How do you failover in Oracle Data Guard?

Performing failover :

Step 1: Check Standby Database role. Step 2: Apply the following command to finish database recovery. SQL> alter database recover managed standby database finish; Database altered. Step 3: Use the following command to activate standby database to a primary.

What is Active Data Guard 12c?

Active Data Guard includes new capabilities with Oracle Database 12c to allow writes to global temp tables and access to unique sequences at an active standby. This further expands the number of reporting applications that can be offloaded from a primary database.

What is the difference between failover and switchover?

A switchover is a role reversal between the primary database and one of its standby databases. ... A failover is when the primary database (all instances of a RAC primary database) fails and one of the standby databases is transitioned to take over the primary role.

What is fast start failover in Oracle Data Guard?

Fast-Start Failover is a feature that allows the Oracle Data Guard broker to failover a failed primary database automatically to a predetermined standby database. This feature increases the availability of the database by eliminating the need for DBA involvement as part of the failover process.

What is fast failover?

Fast failover is a new feature that improves the failover time for the storage stack configured in a clustered environment. ... These changes provide significant reduction in the failover time taken by storage resources during service group failovers.

How do I change from primary to standby database?

Switchover to Physical Standby Database in Oracle 11g

1. Step 1 : Verify whether it is possible to perform a switchover. ...
2. Step 2 : Check that there is no active users connected to the databases. ...
3. Step 3 : Switch the current online redo log file on primary database and verify that it has been appleid.

What is the difference between Data Guard and GoldenGate?

Data Guard is an Oracle specific technology while GoldenGate support heterogeneous database systems including all the major RDBMS as DB2,Sybase, MySQL . ... GoldenGate allows transformation of the data, with conflict management while it is being replicated between both database systems.

What is the difference between Active Data Guard and Data Guard?

Data Guard is a feature of the Oracle Database Enterprise Edition itself and does not require separate licensing. On the other hand, Active Data Guard is a so-called Oracle Database Enterprise Edition Option and as such requires separate licensing.

How do I know if my Active Data Guard is enabled?

If you start a database in SQL*Plus using the STARTUP command and then invoke managed recovery, the Active Data Guard will be enabled.

How does Oracle Data Guard work?

Data Guard provides a comprehensive set of services that create, maintain, manage, and monitor one or more standby databases to enable production Oracle databases to survive disasters and data corruptions. Data Guard maintains these standby databases as transactionally consistent copies of the production database.

What does failover mean?

Failover is the ability to switch automatically and seamlessly to a reliable backup system. When a component or primary system fails, either a standby operational mode or redundancy should achieve failover and lessen or eliminate negative impact on users.

How do you use DR drill in Oracle?

DR Drill in Manual standby Database by manual log shipping

1. 1) Login into the Production Application Server and stop application services. ...
2. 3) Login as SYSDBA and transfer all the archived logs to DR Database server, and it should be in sync,by doing the log shipping activity from production to standby DB.