Tracy: This is just silly. If you're working for a company that can buy a separate server for every single installation of oracle, that company is making too much money. Any DBA that EVER crashed a db due to "administering db in an incorrect manner" ought to have their sorry butts fired. I've had occasions where, for a variety of vendor-related reasons, I've administered up to 5 different versions. It's a reality of our business. I've never experienced a problem runing multiple versions. I'm currently running 5 databases with 7.3.4, 5 databases with 8.1.7.4, and 4 databases with 9.2.0.4, all on the same server, and all are running just fine. Just my .02, but you should stick to your guns. Barb On Apr 5, 2005 8:55 AM, Tracy Rahmlow <tracy.rahmlow@xxxxxxxx> wrote: > We are in the process of upgrading several databases from 8i on AIX 4.3.3 > to 9 on AIX 5.2 or 10g on AIX 5.2. The target version depends upon > whether or not the application is supported on 10g or not. If not will be > migrating toward 9. > The manager of the unix area has indicated that he has seen issues at his > previous shop with co-locating multiple versions of Oracle on the same > server and is basically not allowing the practice. I have never seen or > heard of this issue, but am trying to remain open-minded to his concern. > Here are his statements verbatim: > > Several occasions where server and db crashed due to dba administering db > in an incorrect manner. IE mistook one version for the other. Applied > the incorrect maintenance patch to the incorrect instance. > > Several occasions where db versions did not play nice together 7.3.4 and > 8i. > -- //www.freelists.org/webpage/oracle-l