Hi, I'm working with a customer running a critical web site on a 10gR2 RAC backend DB - they support hundreds of thousands of simultaneous connections at the "quietest" time. They have expressed a desire for NO downtime during ANY changes to Oracle, particularly the application of Oracle patches and Oracle upgrades (both minor and major), etc. Any thoughts? Who's "been there done that"? Thanks! Regards! ________________________________ Please let me know if you prefer to not receive email from me. <blocked::http://www.hp.com/><blocked::http://www.hp.com/> Keith Fahrenfort Solutions Architect - Hewlett Packard Solution Design Services for Oracle Shared Solutions Architecture HP Americas Solution Architecture Call 1.800.424.0993 option2 or email pss@xxxxxx<mailto:pss@xxxxxx> to reach the Solution Design Team keith.fahrenfort@xxxxxx<mailto:keith.fahrenfort@xxxxxx> http://www.hp.com/go/oracle<blocked::http://www.hp.com/go/oracle> For HP's privacy policy and contact information, please see http://welcome.hp.com/country/us/en/privacy.html<blocked::http://welcome.hp.com/country/us/en/privacy.html> ________________________________