after entering the following query,
select * from paydetl where party = '123' and
bill_no not in(select distinct bill_no from gkout where
party = '123')

it gives the error
ora-00600 internal error code arguments
[srsale_2], [0], [45], [], [], [], [], []

no rows selected.

here 'gkout' is the valid view.
paydetl is the table.

plz suggest what to do?