This thread might help you: http://tinyurl.com/yhq3hxa -Upendra Date: Tue, 22 Dec 2009 14:41:41 +0530 Subject: Re: ORA-07445: exception encountered: core dump [ACCESS_VIOLATION] [unable_to_trans_pc] [PC:0x77E7F348] [ADDR:0x7D44] [UNABLE_TO_WRITE] [] From: krishna000@xxxxxxxxx To: harel.safra@xxxxxxxxx CC: oracle-l@xxxxxxxxxxxxx Hi, I appreciate your reply .. yes none of the metalink id working for me .. That is the reason i have posted the question over here , in case if some one had the same issue. Regards Bala On Tue, Dec 22, 2009 at 2:39 PM, Harel Safra <harel.safra@xxxxxxxxx> wrote: Searching for "ora 7445 ACCESS_VIOLATION unable_to_trans_pc" on MOS gave 26 results, none of them help you? Harel Safra Balakrishna Y wrote: Hi All, I have Oracle 10g(10.2.0.4) on my local machine (Windows XP) . when ever i start the database on my machine it start throwing this Error. ORA-07445: exception encountered: core dump [ACCESS_VIOLATION] [unable_to_trans_pc] [PC:0x77E7F348] [ADDR:0x7D44] [UNABLE_TO_WRITE] [] Even metalink does'nt have much supporting documents on this issue. Does any one came across this problem.I appreciate your comments on this. Regards Bala _________________________________________________________________ Hotmail: Trusted email with Microsoft’s powerful SPAM protection. http://clk.atdmt.com/GBL/go/177141664/direct/01/