How to Perform Failover to Standby Using Broker (DGMGRL)

Performing Failover to Standby Using DataGuard Broker

Step0> Set correct environment
$export ORACLE_OHOME=/u01/app/oracle/product/12.1.0.2/dbhome_2
$export ORACLE_SID=APX1TS

Step1> Connect as sys over tns to the standby database using dgmgrl
$ dgmgrl
DGMGRL for Linux: Version 12.1.0.2.0 - 64bit Production

Welcome to DGMGRL, type "help" for information.
DGMGRL> connect sys@APX1TS
Password:
Connected as SYSDBA.

Step1> Perform Failover
Connect to the target standby database and issue the FAILOVER command to perform a failover, specifying the name of the standby database that you want to become the primary database
Note: must connect as sys as shown in Step1

DGMGRL> failover to APX1TS;
Performing failover NOW, please wait...
Failover succeeded, new primary is "APX1TS"

DGMGRL> show configuration;

Configuration - apx1t_dg

Protection Mode: MaxAvailability
Members:
APX1TS - Primary database
Warning: ORA-16629: database reports a different protection level from the protection mode

APX1TP - Physical standby database (disabled)
ORA-16661: the standby database needs to be reinstated

Fast-Start Failover: DISABLED

Configuration Status:WARNING (status updated 5 seconds ago)

Failover and Protection Mode

If the protection mode was at maximum protection, it is reset to maximum performance. You can upgrade the protection mode later, if necessary

If the protection mode was at maximum availability or maximum performance, it remains unchanged.

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