ora-00600

Oracle ORA-00600

I have SQL SELECT statement that returns: Error: ORA-00600: internal error code, arguments: [qerpfAllocateR], [], [], [], [], [], [], [] If I narrow my results by adding one more condition in WHERE clause everything is ok. Anyone knows what is happening? EDIT: select * from ( select tbl1.col1, ..., tbl1.points from tabl...