Craig Shallahamer

Craig Shallahamer is an Oracle performance researcher, writer, and teacher focusing on both firefighting and predictive analysis. His website is and his blog is titled "A Wider View." 

Articles by Craig Shallahamer

Most Oracle performance analysis is now time-based. But it is "total time"-focused: Time to process a SQL statement, a batch process, or the CPU consumed plus Oracle wait time that occurred over an interval of time. This is a fantastic way to approach optimization because it is easy to monitor improvement and it is closer to what a user is experiencing. And, with just a couple twists, we can unite Operations Research (OR) queuing theory with the Oracle time-based approach, opening up an entirely new arena for performance analysis.

Posted December 01, 2011