HI all friends

I tried to delete a record from the session tfabc011m000, but it gives following error:

Fatal error : Error 1000 (bdb_errno 1000) on tfabc0110000 in db_eq(delayed)
Fatal error : Can not continue in tfabc011m000 in DLL: ottstpstandard<150> [retry.point]

What could be the reason. I just wanted to delate that record or change the value index field.

Thanks in advance
Mahmood