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The following is an example of setting the LogXptMode property: Alternatively, use the RedoRoutes property to set the redo transport mode for the target standby and database that is currently in the primary role. Bystander standby databases may be disabled by the broker during the failover, and they must be reinstated or re-created before they can serve as standby databases to the new primary database. A broker configuration can belong to multiple groups. To see the specific parameter, use the "show database StatusReport" command. If reinstatement of a database fails, its status changes to ORA-16795: the standby database needs to be re-created. the preferred method for starting an observer. If the former primary database cannot be reinstated automatically, you can manually reinstate it using either the DGMGRL REINSTATE command or Cloud Control. For instance, you could log into the system running observer1 to stop observer2. To get started, all you'll need is Oracle Database Enterprise Edition Release 10.2 or later, a database, and three hosts: two for the databases and a small host for the FSFO observer. The Data Guard broker and the secondary database both run the observer and observe the primary database for downtime. You can specify particular conditions for which a fast-start failover should occur using either Cloud Control or the DGMGRL ENABLE FAST_START FAILOVER CONDITION and DISABLE FAST_START FAILOVER CONDITION commands. Data Guard Failover Options - dba-oracle.com Goal. The syntax for the configuration declaration is: The definition for each broker configuration is: The configuration-name can be different from the name defined in the metadata of the Data Guard Broker configuration. Download Ebook Oracle 11g 12c Data Guard With Asm Lab Practice A Complete Hands On Lab Practice To Manage A Data Guard . For more details about managing Redo Apply services using properties, see Managing Log Apply Services. fast-start failover, you can issue the DGMGRL SHOW FAST_START FAILOVER, restart the new physical standby database. If the standby database's redo applied point is within that many seconds of the primary database's redo generation point, a fast-start failover will be allowed. If the failover target is a logical standby database, the original primary database and all physical and snapshot standby databases in the configuration will be disabled. Contains the callout configuration file, pre-callout script, To allow the master observer to automatically reinstate the former primary database, the database must be started and mounted. The new ConfigurationWideServiceName configuration property can be used to simplify setting up this connect identifier. Apply services on all other bystander standby databases automatically begin applying redo data received from the new primary database. configuration file SQL>STARTUP; A fast-start failover to the target standby database fails. This is normal. Set the FastStartFailoverThreshold property to specify the number of seconds you want the observer and target standby database to wait (after detecting the primary database is unavailable) before initiating a failover. Bystanders are part of the Data Guard configuration, but not part of the FSFO configuration. 99 Software Similar To Oracle Data Guard Backup & Sync