I'v got a problem: sometimes when I make desc of any object SQL+ get a error:

SQL> desc live.SERIAL_TBL;
Name Null? Type
----------------------------------------------------------------------- SESSION_IDNUMBER(15)
Segmentation fault (core dumped)
[oracle@www2 oracle]$ sqlplus system

Is anybody knows what the reason of that?
Is it Oracle's problem or HD? As for HD we have RAID 5.
NOthing in the trace files.
Thank you.

[Edited by kgb on 05-08-2001 at 08:46 AM]