ORA 01114 and alert log issue

Hi..

I got the following error in my alert log..

Tue Dec 3 18:28:06 2002
DISTRIB TRAN ODBMSPRD.COTTONGINNYLTD.COM.f451c48c.18.68.341845
is local tran 18.68.341845 (hex=12.44.53755))
delete pending collecting tran, scn=1369825061 (hex=0.51a5df25)


Prior to this..

Taking a Snapshot at 03-DEC-2002 18:09:22
Connected.
BEGIN cot_wkidebal_bld1; END;

*
ERROR at line 1:
ORA-01114: IO error writing block to file 404 (block # 56957)
ORA-27063: skgfospo: number of bytes read/written is incorrect
IBM AIX RISC System/6000 Error: 28: No space left on device
Additional information: -1
Additional information: 327680
ORA-01114: IO error writing block to file 404 (block # 56957)
ORA-27063: skgfospo: number of bytes read/written is incorrect
IBM AIX RISC System/6000 Error: 28: No space left on device
Additional information: -1
Additional information: 327680
ORA-06512: at "IDEAS.COT_WKIDEBAL_BLD1", line 24
ORA-06512: at line 1

The above error is not reported in Alert log as well...
The Irony is that we have only 10 datafiles in the database and what does this error mean? I looked through metalink, but the recommended solutions are making the TS online and stuff like that, to which all my files are always ONLINE and AVAILABLE.. Looks like this is an issue with Temp files, and how should I proceed?

Thanks, ST2000