Database Software

I have been assigned to create a standby database from our RMAN backups in a different machine, as this is my first attempt at recovering, I am struggling a bit. I would appreciate if someone can throw any light on what dumb mistakeI am doing here. I ahve absolutely no control over the back up script which is done by my vendor, but can do anything in the reocvery portion. I did try going through the documentaiton and other help available for the last 2 days.

Database : Oracle 10G R2
OS : Windows Server 2003


My backup script is
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configure channel device type disk format 'J:\RMAN\RMAN_df_%U' maxpiecesize 2048M;

SQL "ALTER SYSTEM SWITCH LOGFILE";
SQL "ALTER SYSTEM SWITCH LOGFILE";
backup database;
SQL "ALTER SYSTEM SWITCH LOGFILE";
SQL "ALTER SYSTEM SWITCH LOGFILE";
backup current controlfile for standby FORMAT='J:\RMAN\RMAN_sc_%U';

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For recovery of a standby database,

I have copied the the back up pieces and the archive logs to the standby server where I have just created an instance with the same name as production db.

set ORACLE_SID=NGINPROD

set dbid 820336652

STARTUP NOMOUNT

RESTORE STANDBY CONTROLFILE FROM 'I:\TEMP\RMAN_Backup\RMAN\RMAN_SC_2UMIUJM1_1_1';

CATALOG BACKUPPIECE 'I:\TEMP\RMAN_Backup\RMAN\RMAN_DF_2RMIUIE4_1_1',
'I:\TEMP\RMAN_Backup\RMAN\RMAN_DF_2RMIUIE4_2_1',
'I:\TEMP\RMAN_Backup\RMAN\RMAN_DF_2RMIUIE4_3_1',
'I:\TEMP\RMAN_Backup\RMAN\RMAN_DF_2RMIUIE4_4_1',
'I:\TEMP\RMAN_Backup\RMAN\RMAN_DF_2RMIUIE4_5_1',
'I:\TEMP\RMAN_Backup\RMAN\RMAN_DF_2RMIUIE4_6_1',
'I:\TEMP\RMAN_Backup\RMAN\RMAN_DF_2RMIUIE4_7_1',
'I:\TEMP\RMAN_Backup\RMAN\RMAN_DF_2SMIUJ88_1_1',
'I:\TEMP\RMAN_Backup\RMAN\RMAN_DF_2SMIUJ88_2_1',
'I:\TEMP\RMAN_Backup\RMAN\RMAN_DF_2SMIUJ88_3_1',
'I:\TEMP\RMAN_Backup\RMAN\RMAN_DF_2SMIUJ88_4_1',
'I:\TEMP\RMAN_Backup\RMAN\RMAN_DF_2TMIUJLN_1_1',
'I:\TEMP\RMAN_Backup\RMAN\RMAN_SC_2UMIUJM1_1_1';

RESTORE DATABASE;

Till this step I do not encounter any issues, but when i try to recover the database I am hit with the below error.
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RMAN> recover database;

Starting recover at 16-AUG-11
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=156 devtype=DISK

starting media recovery

unable to find archive log
archive log thread=1 sequence=253340
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 08/16/2011 09:31:57
RMAN-06054: media recovery requesting unknown log: thread 1 seq 253340 lowscn 4696173517

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