hi I got this message when i restarted the database after a abrupt shutdown and the alert log error is below THe database is no archive log mode we had to fix the problem by using logical dumps I still have a test case which i would like to fix oracle error ----------------- SVRMGR> connect internal Connected. SVRMGR> startup ORA-03113: end-of-file on communication channel SVRMGR> exit Server Manager complete. The alert log error is below ----------------------------------- Errors in file /usr1/oracle/admin/payroll/udump/payroll_ora_1043.trc: ORA-07445: exception encountered: core dump [kdbcpss()+248] [SIGSEGV] [Address not mapped to object] [2268356608] [] [] Tue Jul 27 13:44:42 2004 Errors in file /usr1/oracle/admin/payroll/udump/payroll_ora_1043.trc: ORA-07445: exception encountered: core dump [ktsdsh()+856] [SIGBUS] [Invalid address alignment] [2267815910] [] [] ORA-07445: exception encountered: core dump [kdbcpss()+248] [SIGSEGV] [Address not mapped to object] [2268356608] [] [] Tue Jul 27 13:44:44 2004 Errors in file /usr1/oracle/admin/payroll/udump/payroll_ora_1043.trc: ORA-07445: exception encountered: core dump [ktsdsh()+856] [SIGBUS] [Invalid address alignment] [2267815910] [] [] ORA-07445: exception encountered: core dump [ktsdsh()+856] [SIGBUS] [Invalid address alignment] [2267815910] [] [] ORA-07445: exception encountered: core dump [kdbcpss()+248] [SIGSEGV] [Address not mapped to object] [2268356608] [] []