Abstract
An execution plan describes the operations carried out by the SQL engine to execute a SQL statement. Every time you have to analyze a performance problem related to a SQL statement, or simply question the decisions taken by the query optimizer, you must know the execution plan. Without it, you are like a blind man with his cane in the middle of the Sahara Desert, groping around trying to find his way. I can't stress enough that the first thing to do while analyzing or questioning the performance of a SQL statement is to get its execution plan.
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© 2008 Christian Antognini
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(2008). Execution Plans. In: Troubleshooting Oracle Performance. Apress. https://doi.org/10.1007/978-1-4302-0498-5_6
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DOI: https://doi.org/10.1007/978-1-4302-0498-5_6
Publisher Name: Apress
Print ISBN: 978-1-59059-917-4
Online ISBN: 978-1-4302-0498-5
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