Oracle Dataguard Switchover

SQL> select database_role from v$database;

DATABASE_ROLE
----------------
PRIMARY

SQL> alter database commit to switchover to physical standby;

Database altered.

SQL> select open_mode,database_role from v$database;

OPEN_MODE	     DATABASE_ROLE
-------------------- ----------------
READ WRITE	     PHYSICAL STANDBY

SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[oracle@prodServer ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on Tue Mar 5 15:07:41 2013

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

Connected to an idle instance.

SQL> startup nomount;
ORACLE instance started.

Total System Global Area  835104768 bytes
Fixed Size		    2232960 bytes
Variable Size		  541068672 bytes
Database Buffers	  289406976 bytes
Redo Buffers		    2396160 bytes
SQL> alter database mount standby database;

Database altered.

SQL> alter database recover managed standby database using current logfile disconnect from session;

Database altered.

SQL> select open_mode,database_role from v$database;

OPEN_MODE	     DATABASE_ROLE
-------------------- ----------------
MOUNTED 	     PHYSICAL STANDBY

SQL> select database_role from v$database;

DATABASE_ROLE
----------------
PHYSICAL STANDBY

SQL> 
SQL> 
SQL> alter database commit to switchover to primary;

Database altered.

SQL> shutdown immediate
ORA-01109: database not open


Database dismounted.
ORACLE instance shut down.
SQL> startup
ORACLE instance started.

Total System Global Area  417546240 bytes
Fixed Size		    2228944 bytes
Variable Size		  192941360 bytes
Database Buffers	  218103808 bytes
Redo Buffers		    4272128 bytes
Database mounted.
Database opened.
SQL> select database_role from v$database;

DATABASE_ROLE
----------------
PRIMARY

SQL> select database_role from v$database;

DATABASE_ROLE
----------------
PRIMARY

SQL> select database_role,switchover_status from v$database;

DATABASE_ROLE	 SWITCHOVER_STATUS
---------------- --------------------
PRIMARY 	 TO STANDBY