Upgrading from Oracle 9i to Oracle Database 11g: A Real World Customer ExperiencePosted: 18/12/2010
This technical Oracle White Paper will cover a whole Proof-of-Concept (PoC) done with one of the largest retail companies of the world.
The goals of this“Move on to Oracle Database 11g” PoC were to test the easiest way to upgrade400 databases directly from Oracle 184.108.40.206 to Oracle Database 220.127.116.11, and to evaluate Oracle Database 11g’s performance features such as Oracle Tuning Pack, SQL Plan Management, Real Application Testing with Database Replay, SQLPerformance Analyzer, and PL/SQL Native Compilation. Thereby it should beassured that nightly OLTP batch runs complete in the same amount of time, orfaster, than in the current production environment.
Upgrading directly from Oracle 9i to Oracle Database 11g will not only guaranteePremium Support until August 2012 – it will offer you many useful features tomake this upgrade the most predictable and risk free database upgrade ever,ensuring excellent performance in the new Oracle Database 11g environment.
See link below