SWITCHOVER_STATUS value are different for Oracle 11gR1 and 11gR2

Question

Hi All,
I would like to know why is there a difference in the SQL output when run on a 11gR1 and 11gR2 Primary database in a DataGuard configuration.
On a 11gR1 Primary database
Open an SQL Session on the Primary database and run the SQL statement
SQL> select switchover_status from v$database;
To Standby
Now open a second SQL Session
Run the above SQL statement
SQL> select switchover_status from v$database;
Sessions Active
Now, when I do the same on a 11gR2 Primary database here is the result
On a 11gR2 Primary database
Open an SQL Session on the Primary database and run the SQL statement
SQL> select switchover_status from v$database;
To Standby
Now open a second SQL Session
Run the above SQL statement
SQL> select switchover_status from v$database;
To Standby
Is this a bug in 11gR2 ? Is there a patch/fix available ?
Oracle 11gR2 version 11.2.0.1.0
TIA,
Sudhir

Answer 1

Hello Loic,
The result on the Standby Database is "Not Allowed". This is because there is no alternative Standby Available.
I have some scripts which does the switchover based on the Database status. As per Oracle 11gR2 DataGuard Admin docs.
Cut pasted for Oracle DataGuard Admin docs.
Step 1 Verify that the primary database can be switched to the standby role.
SQL> SELECT SWITCHOVER_STATUS FROM V$DATABASE;
SWITCHOVER_STATUS
TO STANDBY
1 row selected
Note: The WITH SESSION SHUTDOWN clause can be omitted from
the switchover statement if the query performed in the previous step
returned a value of TO STANDBY.
When I use SQL statement "ALTER DATABASE COMMIT TO SWITCHOVER TO PHYSICAL STANDBY;" and if there are Active SQL sessions then I get the error
ALTER DATABASE COMMIT TO SWITCHOVER TO PHYSICAL STANDBY *
ORA-01093: ALTER DATABASE CLOSE only permitted with no sessions connected
Thanks,
Sudhir