http://itknowledgeexchange.techtarget.com/itanswers/migration-plan-for-9i-linux-to-10g-solaris/ Mon, 20 May 2013 12:39:25 +0000 hourly 1 http://itknowledgeexchange.techtarget.com/itanswers/migration-plan-for-9i-linux-to-10g-solaris/#comment-52170 mrdenny Fri, 07 Mar 2008 02:24:13 +0000 #comment-52170 I don’t have a plan handy for you, but I can tell you that testing will be VERY important. At a prior company we decided to upgrade from 9i to 10g without testing (not my idea, or my project) and we had very bad results. The 10g optimizer didn’t like several of the queries which we were using and the Oracle database (running on a very nice new IBM server) was running slower than an Access database. Oracle ended up having to spend three weeks writing us a custom build of the database which basically had the 9i optimizer put back in.

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