Hi, We are running Solaris 9 with UFS on Oracle 9.2.0.4.0. We switched to direct I/O and did not see a better performance as far as updating statistics concerned. Why? It used to take us 22 hours to update statistics for all tables, but now 31 hours. Thanks, Roger Xu Database Administrator Dr Pepper Bottling Company of Texas (972)721-8337 This e-mail is intended solely for the person or entity to which it is addressed and may contain confidential and/or privileged information. Any review, dissemination, copying, printing or other use of this e-mail by persons or entities other than the addressee is prohibited. If you have received this e-mail in error, please contact the sender immediately and delete the material. ____________________________________________________________________ This email has been scanned for all viruses by the MessageLabs Email Security System. Any questions please call 972-721-8257 or email your request to tech_support@xxxxxxxxxxxx -- //www.freelists.org/webpage/oracle-l