ORA-27046: file size is not a multiple of logical block size

Hi Team,

Please help how can I proceed further with the above error -

OS : Solaris 5.9

Database : 10.2.0.3 EE

Database mounted in Exclusive Mode
Completed: ALTER DATABASE   MOUNT
Wed Sep 11 16:14:04 2013
ALTER DATABASE OPEN
Wed Sep 11 16:14:04 2013
Errors in file /opt/oracle/admin/DBDEV01/bdump/dbdev01_dbw0_1193.trc:
ORA-01157: cannot identify/lock data file 13 - see DBWR trace file
ORA-01110: data file 13: '/oradata/ora04/DBDEV01/DBDEV01_DATA_T02a.dbf'
ORA-27046: file size is not a multiple of logical block size
Additional information: 1
ORA-1157 signalled during: ALTER DATABASE OPEN...

During Startup:
===============
SQL> startup
ORACLE instance started.

Total System Global Area 2130706432 bytes
Fixed Size                  2031448 bytes