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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. Fast-Start Failover enables the broker to perform these tasks automatically in the same time that it would typically take a DBA to log into the system.
What is JDBC URL in Oracle?
Connection URL: The connection URL for the oracle10G database is jdbc:oracle:thin:@localhost:1521:xe where jdbc is the API, oracle is the database, thin is the driver, localhost is the server name on which oracle is running, we may also use IP address, 1521 is the port number and XE is the Oracle service name.
What is fast connection failover?
The Fast Connection Failover (FCF) feature is a Fast Application Notification (FAN) client implemented through the connection pool. The feature requires the use of an Oracle JDBC driver and an Oracle RAC database or an Oracle Restart on a single instance database.
What is JDBC Sid URL?
JDBC URLs used in JDBC database connections in IDEs like JDeveloper and in JDBC Data Source definitions in Java EE servers such as WebLogic Server will typically use the Oracle Database SID as the name of the database.
What is ONS configuration?
ONS configuration is controlled by the ONS configuration file, ORACLE_HOME /opmn/conf/ons. config . This file tells the ONS daemon how it should behave. Configuration information within ons. Specifies the port that ONS binds to on all interfaces for talking to other ONS daemons.
How to enable Oracle Data Guard fast start failover?
Enable the Fast-Start Failover, Oracle Data Guard configuration must meet the following requirements: 1)Flashback Database must be enabled for both the primary and standby database target. 2. An observer server (server outside of the Oracle Data Guard configuration) should be established to monitor the environment.
What do you need to know about Oracle Data Guard?
Learn how to use Oracle Data Guard broker to manage databases during switchover and failover. Oracle Data Guard helps you change the role of databases between primary and standby using either a switchover or failover operation. A switchover is a role reversal between the primary database and one of its standby databases.
Can you re-enable flashback in Oracle Data Guard?
However, re-enabling Flashback Database will require a bounce since the database must be mounted and not open. The observer is the third party in an otherwise typical primary/standby Data Guard configuration.
What are the best practices for Oracle failover?
This section describes Oracle Database 12c configuration best practices to automatically transition application connections from a failed primary database to a new primary database after a Data Guard / Active Data Guard role transition has occurred. This configuration also applies to client’s connection to Real Application Clusters databases.