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that transactions meet the performance expectations as the project progresses through elaboration, construction,
transition, and production. For example, when migrating from a single instance to RAC, performance considerations
such as scalability requirements, failover requirements, number of servers, resource capacity of these servers, and so
forth will help in the Inception and Elaboration phases.
Time spent developing a Performance Management strategy and establishing the appropriate controls and
checkpoints to validate that performance has been sufficiently considered during the design, build, and implementation
(Figure 1-4 ) will save valuable time spent in reactive tuning at the end of the project while raising user satisfaction.
The Performance Management process should not end with the production implementation but should continue
after the system is implemented to monitor performance of the implemented system and to provide the appropriate
corrective actions in the event that performance begins to degrade.
Figure 1-4. OUM Performance Management life cycle 3
3 Source: Oracle Corporation.
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