Data Guard :: ORA-01154 / Database Busy - Open / Close / Mount And Dismount Not Allowed Now

I am trying to create the Physical StandBy Database in the same server. Till last 2 Final steps, everything went on well. In the final steps, when I try to open the StandBy Database, it throws the following Error:

*******************************************************
SQL...> alter database open;
alter database open
*
ERROR at line 1:
ORA-01154: database busy. Open, close, mount, and dismount not allowed now
*******************************************************

I tried creating the Physical Standby with the following Steps.

Environment: Oracle Release 10.2.0.1.0 / Windows 2003 Server Enterprise Edition SP2
Primary DB = 'PrimDB'
StandBy DB to be created ='StBy1DB'

In the same Server, location for

PrimDB datafiles='F:oracleproduct10.2.0oradataPrimDBData',
StandBy Datafiles='E:StandBy_DBData'
PrimDB Control Files='F:oracleproduct10.2.0oradataPrimDBControl'
StandBy Control Files= 'E:StandBy_DBControl'

[code]....

Step 1 Create the Oracle Service for StandBy DB "StBy1DB' and Create the Standy DB Password file.

ORADIM -NEW -sid StBy1DB -intpwd passwd -startmode manual

Step 2 Shut down the primary database.

SQL> SHUTDOWN IMMEDIATE;

Step 3 Copy the datafiles to 'E:StandBy_DBData'. (including Temp01.dbf is it Right?)

Step 4 Restart the primary database.

Restart the primary database:

SQL> STARTUP;

Step 5 Create a Control File for the Standby Database (Should this command be given in Mount Status or Open Status?)

From Primary database,

SQL> ALTER DATABASE CREATE STANDBY CONTROLFILE AS 'E:StandBy_DBControlStByControl01.ctl';

Step 6 Prepare the Initialization Parameter File to be Copied to the Standby Database

SQL> CREATE PFILE='E:StandBy_DBPFileinitStBy1DB.ora' FROM SPFILE;

Step 7 Set Initialization Parameters on a Physical Standby Database

db_cache_size=444596224
java_pool_size=4194304
large_pool_size=4194304
shared_pool_size=150994944
streams_pool_size=0

[code]....

Now When I type the following command, it throws an error:

SQL...> alter database open;
alter database open
*
ERROR at line 1:
ORA-01154: database busy. Open, close, mount, and dismount not allowed now