Nothing on the ORA-7445 lookup on Metalink. I suggest you log a SR (and mention which version you are on) ________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of prasad.kar@xxxxxxxxx Sent: 25 July 2007 01:27 To: oracle-l@xxxxxxxxxxxxx Subject: ORA-07445: exception encountered: core dump [ACCESS_VIOLATION] [_kturrur+52] [PC:0x9478E8] Hi, I am getting this error in alert log while trying to open one of our oracle production db running on windows 2003 server. I am able to mount it without any problem but once I try to open it . it just hangs and the smon trace file grows very big 500mb+ until i terminate the session.