Failover scenario when you have more than one standby DB

DB version: 11.2.0.4

OS: Linux/Unix

I've only worked with Data Guard inverter set when there is only a standby DB.

Consider the following configuration:

Primary DB: orcl

Physical standby DB1: orcl_sby0

Physical standby DB2: orcl_sby1

I understand that, if you want to do failover of SQL * Plus, the following command must be run on the primary database

SQL > ALTER DATABASE COMMIT to SWITCH STANDBY mode PHYSICAL;

What Eve DB will become the principal now?

This command does not switch to digital. It is simply your primary database to start to behave in physical waiting.

After that, you can choose either Standby (standby1 or standby2) 2 to pass the primary role by running "alter database commit to switching to the primary with the end of the session.

So it is to you to choose which standby database you want to start to behave like a primary database and then set the log_archive_dest_ FAL and settings accordingly.

-Jonathan Rolland

Tags: Database

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