File1 needs more recovery to be consistent

Question

Hi,
I took complete backup using rman and I am trying to restore the database using this backup. I was expecting that restoration can be done, but when I tried to do the restoration at the last, I am getting this error -
SQL> alter database open resetlogs;
alter database open resetlogs
ERROR at line 1:
ORA-01194: file 1 needs more recovery to be consistent
ORA-01110: data file 1: '/test/proddata/system01.dbf'
What could be the reason?
At the RMAN prompt the below message shows -
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 10/12/2012 19:31:10
RMAN-06053: unable to perform media recovery because of missing log
RMAN-06025: no backup of archived log for thread 1 with sequence 56152 and starting SCN of 14936608929 found to restore
DB Version is 11.2.0.1
Neel

Answer 1

Backup script
RUN{
        Allocate channel ch1 type disk format '/u01/backupDB/%d_DATA_%U_%T' maxpiecesize 5G;
        Allocate channel ch2 type disk format '/u01/backupDB/%d_DATA_%U_%T' maxpiecesize 5G;
        Allocate channel ch3 type disk format '/u01/backupDB/%d_DATA_%U_%T' maxpiecesize 5G;
                BACKUP DATABASE;
        Release channel ch1;
        Release channel ch2;
        Release channel ch3;
  #Backup Archive Logs
                  sql 'alter system archive log current';
        Allocate channel t1 device type disk;
                CROSSCHECK ARCHIVELOG ALL;
                BACKUP FORMAT '/u01/backupDB/%d_ARCH_%U_%T' ARCHIVELOG ALL;
                Delete noprompt copy of archivelog all backed up 1 times to device type disk;
                #backup archivelog all delete all input;
        Release channel t1;
#Control file backup
        Allocate channel t1 device type disk;
                BACKUP FORMAT '/u01/backupDB/%d_CTRL_%u_%T' CURRENT CONTROLFILE;
        Release channel t1;
}Restore db script
run{
    allocate channel c1 device type disk;
    allocate channel c2 device type disk;
    allocate channel c3 device type disk;   
    restore database check readonly force;
    switch datafile all;
    recover database;
    release channel c1;
    release channel c2;
    release channel c3;
    }