ORA-01242: data file suffered media failure: database in NOARCHIVELOG mode
I am receiving below errors in Oracle 10.2.0.4 in trace files and alert log files .
Platform is 32-bit windows server .
Thu Nov 26 01:08:00 2009
Errors in file f:\oracle\product\10.2.0\admin\jde\bdump\jde_smon_536.trc:
ORA-01242: data file suffered media failure: database in NOARCHIVELOG mode
error 1242 detected in background process
ORA-01242: data file suffered media failure: database in NOARCHIVELOG mode
ORA-01114: IO error writing block to file 2 (block # 3486)
ORA-01110: data file 2: 'F:\ORACLE\PRODUCT\10.2.0\ORADATA\JDE\UNDOTBS01.DBF'
ORA-27072: File I/O error
OSD-04008: WriteFile() failure, unable to write to file
O/S-Error: (OS 33) The process cannot access the file because another process has locked a portion of the file.