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STATSPACK tool: transaction vs. execution measurement

Brian Peasland EXPERT RESPONSE FROM: Brian Peasland

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QUESTION POSED ON: 11 March 2008
What is the difference between an Oracle transaction versus execution measurement found in the STATSPACK tool?


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This is a tricky area. I wrote a white paper called How Many Transactions which discusses this in depth. The white paper can be found on my web site. Basically, Oracle considers a transaction to be any INSERT, UPDATE, or DELETE statement. All of those statements are "executed". But SELECT statements are also executed. The STATSPACK tool considers all executions to be all INSERT, UPDATE, DELETE, and SELECT statements, whereas the number of transactions omits the SELECT statements. Please look at my white paper which shows in detail how Oracle counts these.




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