Get a look at disk, swap, and cpu usage and open a sev 1 sr with mos. We really cant tell anything with the information you have provided. Sent from my HTC Tilt? 2, a Windows® phone from AT&T -----Original Message----- From: KRISHNA MOORTHY <krish33moorthy@xxxxxxxxx> Sent: Saturday, February 05, 2011 0:30 To: oracle Freelists <Oracle-L@xxxxxxxxxxxxx> Subject: Production db server getting freezed Hi Our production database server is getting frrezed suddenly yesterday..There is no deadlock or any unknown errors in alert log file. Oracle database version : 10.0.2.0 OS : RedHatLinux 5.2 Please share your thoughts to analyze the issue.What kind of logs or settings i need to look in to this issue at OS level and db level. Regards Krishna