I am issuing a delete command on a table in SQL Plus (8.0.5) and I recieve the following error:

DELETE BUSN;
*
ERROR at line 1:
ORA-03113: end-of-file on communication channel

I have no problems issuing select statements or other complicated queries, no problem updating or adding rows, but when I try to delete the rows in the table (and there are only 11) I get this error.

After I get the error, my session is dropped and when I try to reconnect to the database SQL Plus totally crashes with an access violation and I must restart SQL Plus entirely.

It might also be of value to note that this table is the only one out of 157 that is having a problem. Several of which had over 15,000 records in them.

Any suggestions? I'm stumped.