Dynamic SQL pp 279-326 | Cite as

Parameter Sniffing

  • Edward Pollack


In Chapter  6 we introduced a number of tools, methods, and tips for performance optimization. A critical component that was briefly discussed was the query plan cache. Whenever a query is executed for the first time, an execution plan is generated by the query optimizer. This process is expensive, and therefore it is beneficial to minimize the work that is performed by it. Execution plans are placed into the query plan cache when optimization is complete, where they will remain until sufficient changes occur in execution, available memory, or the underlying data to push that plan out of cache.

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© Edward Pollack 2019

Authors and Affiliations

  • Edward Pollack
    • 1
  1. 1.AlbanyUSA

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