Hi, what is the recommended DBA way, to determine, what is causing Oracle.exe to consume 100% cpu time ? We encounter this once in a while, and all of a sudden around 4am to 5am. This affects some of our machines, but not all (and all have the very same configuration) in a 3 to 4 day interval. Running Oracle 9.2.0.1 on Windows XP I know that this is a very vague description, but any hint is appreciated. Thank you > Frank < ________________________________________________________________________ Important Notice This email and any files attached are confidential and may contain privileged information. If you are not the intended recipient, do not forward or disclose this email, open any attachments, make any copies or save this email anywhere. Please delete this email from your system and notify the sender (maybe via phone + 49-2166-266-0). Thank you very much. -- //www.freelists.org/webpage/oracle-l