Upgrade Companion - Read it first!

Customers and Oracle partners were asking for a long time about a comprehensive note about upgrades. Often questions were raised such as "Why has this default setting changed and where has it been documented?", "How do I preserve performance information before the upgrade to ease diagnosis just in case something happens?" or "What's new with the optimizer?".

To answer these and many more questions in late 2007 the first Upgrade Companion for Oracle Database 10gR2 has been published on Metalink. Later the Companion for 11g got published as well - and as soon as Oracle Database 11gR2 gets released the Upgrade Companion will be available, too.

You'll find real Upgrade Best Practices from a technical perspective assisting you in planning your upgrade tasks carefully:

companion1.jpg

And - very important in the Behaviour Changes section- initialization parameter changes and very detailled description about optimizer behaviour:

companion2.jpg

companion3.jpg

It's always a good idea to read the Upgrade Companions before you start your upgrades.

Comments:

Interestingly you still use the classic metalink where the information is quite easily to find. What about My Oracle Support if you don't have the Doc ID? Regards Marcus

Posted by Marcus on August 10, 2009 at 04:48 AM CEST #

Hi Marcus, if you type in "upgrade companion" in the search box in the rightmost corner of the New Metalink screen, then the 11g and 10g companion will be displayed at first :-) Regards Mike

Posted by Mike Dietrich on August 10, 2009 at 07:09 AM CEST #

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About

Mike Dietrich - Oracle Mike Dietrich
Senior Principal Technologist - Database Upgrade Development Group - Oracle Corporation

Based near Munich/Germany and spending plenty of time in airplanes to run either upgrade workshops or work onsite with reference customers. Acting as interlink between customers and the Upgrade Development.

Contact me either via XING or LinkedIn

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