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Error in starting MRP process in Standby database.

$phinx19 Newbie
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Hi All,

OS:Windows server 03
DB:11g

I am creating a Standby database, everything is fine until i fire the below command to start the MRP process to start the recovery of the database.
alter database recover managed standby database disconnect from session;
MRP0 started with pid=27, OS id=6640
2013-02-07 17:59:48.515000 +05:30
started logmerger process
Managed Standby Recovery not using Real Time Apply
Errors in file d:\app\oracle\diag\rdbms\testdr\testdr\trace\testdr_dbw0_6000.trc:
ORA-01157: cannot identify/lock data file 1 - see DBWR trace file
ORA-01110: data file 1: 'D:\APP\ORACLE\ORADATA\TEST\TEST\SYSTEM01.DBF'
ORA-27086: unable to lock file - already in use
OSD-00002: additional error information
O/S-Error: (OS 32) The process cannot access the file because it is being used by another process.
Errors in file d:\app\oracle\diag\rdbms\testdr\testdr\trace\testdr_dbw0_6000.trc:
ORA-01157: cannot identify/lock data file 2 - see DBWR trace file
ORA-01110: data file 2: 'D:\APP\ORACLE\ORADATA\TEST\TEST\SYSAUX01.DBF'
ORA-27086: unable to lock file - already in use
OSD-00002: additional error information
O/S-Error: (OS 32) The process cannot access the file because it is being used by another process.
Errors in file d:\app\oracle\diag\rdbms\testdr\testdr\trace\testdr_dbw0_6000.trc:
ORA-01157: cannot identify/lock data file 3 - see DBWR trace file
ORA-01110: data file 3: 'D:\APP\ORACLE\ORADATA\TEST\TEST\UNDOTBS01.DBF'
ORA-27086: unable to lock file - already in use
OSD-00002: additional error information
O/S-Error: (OS 32) The process cannot access the file because it is being used by another process.
Errors in file d:\app\oracle\diag\rdbms\testdr\testdr\trace\testdr_dbw0_6000.trc:
ORA-01157: cannot identify/lock data file 4 - see DBWR trace file
ORA-01110: data file 4: 'D:\APP\ORACLE\ORADATA\TEST\TEST\USERS01.DBF'
ORA-27086: unable to lock file - already in use
OSD-00002: additional error information
O/S-Error: (OS 32) The process cannot access the file because it is being used by another process.
MRP0: Background Media Recovery terminated with error 1110
Errors in file d:\app\oracle\diag\rdbms\testdr\testdr\trace\testdr_pr00_7984.trc:
ORA-01110: data file 1: 'D:\APP\ORACLE\ORADATA\TEST\TEST\SYSTEM01.DBF'
ORA-01157: cannot identify/lock data file 1 - see DBWR trace file
ORA-01110: data file 1: 'D:\APP\ORACLE\ORADATA\TEST\TEST\SYSTEM01.DBF'
Recovery Slave PR00 previously exited with exception 1110
Errors in file d:\app\oracle\diag\rdbms\testdr\testdr\trace\testdr_mrp0_6640.trc:
ORA-01110: data file 1: 'D:\APP\ORACLE\ORADATA\TEST\TEST\SYSTEM01.DBF'
ORA-01157: cannot identify/lock data file 1 - see DBWR trace file
ORA-01110: data file 1: 'D:\APP\ORACLE\ORADATA\TEST\TEST\SYSTEM01.DBF'
Completed: alter database recover managed standby database disconnect from session

Can anyone tell me why is this comming?

Regards,
Sphinx
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