On Thu, 2004-05-27 at 05:02, Ivan Chow wrote: > The database needs to be available in read-write mode when we do the upgrade > from 8i to 9i or 9i to 10G. Hardware is not an issue as long as we can > achieve zero downtime during the upgrade. Not sure how we can achieve that. > Anyone has any experience or suggestions? > > thanks. > > Ivan > When you consider that the database being migrated must be in 'startup migrate' mode, and that *many* changes will be made to the data dictionary, it would not seem possible to do what you are asking. Jared ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx put 'unsubscribe' in the subject line. -- Archives are at //www.freelists.org/archives/oracle-l/ FAQ is at //www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------