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While the posted version continues to be updated, this is the first and original publicly available and published Session Wait Interface paper, which was published by Mr. Shallahamer in 1997.
Abstract
With the introduction of the session wait event family of virtual performance tables, standard performance tuning practices have been radically changed. No longer is it necessary to gather volumes of data, calculate a seemingly ever-growing number of performance ratios, and then finally perform the analysis. Through the session wait event views, Oracle database systems "tell" performance specialists specifically where contention resides and what is causing the contention. This dramatically reduces problem identification time so more time can be spent on problem resolution analysis. This paper contrasts contention identification methods, introduces the session wait event tables along with how to use them to pinpoint contention, and finally a case study to demonstrate the use session wait event based analysis. All the tools used in this paper are available for free at OraPub's web site. |
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