Oracle Data Guard 10g Release 2: Switchover and Failover Best Practices
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Overview: This white paper provides the Maximum Availability Architecture (MAA) best practices for achieving the fastest Data Guard switchovers and failovers with Oracle Database 10g Release 2. It also provides estimates of switchover and failover timings under various configuration settings. MAA testing with Data Guard 10g Release 2 role transitions included testing switchovers, manual failovers, and fast-start failovers. All testing was performed using both Oracle Enterprise Manager and the Data Guard Broker command-line interface (DGMGRL), as well as SQL*Plus statements.