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Over the last few months we have noticed that our existing oracle servers are being pushed to 100% CPU utilization by the load we are putting on them, often resulting in sometimes poor performance of the pipeline server and we web applications. We have purchased two new servers which will provide the following benefits:

1. Supports 64 simultaneous threads of execution (from current 2). This will allow us to support the expected load from many people using the web interfaces at the same time as we are performing data processing.
2. Faster and more reliable RAID 10 disks to improve IO performance
3. Two redundant servers to provide failover in case one server fails

The new servers are running the same OS and Oracle versions as our current production setup, so we do not anticipate any compatibility problems with the new servers, and we have done extensive testing of the performance of the new servers as detailed below.

Testing

Scalability Testing

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Failover testing will be performed on Monday April 7.

Switchover methodology

We propose to switchover to the new oracle databases sometime during the period April 8-11. We will perform the following steps