© Stelios Charalambides  2017

Stelios Charalambides, Oracle SQL Tuning with Oracle SQLTXPLAIN, 10.1007/978-1-4842-2436-6_10

10. How to Work with Adaptive Plans

Stelios Charalambides

(1)New Hampton, New Hampshire, USA

Imagine you’ve come to conquer the planet SQL but those pesky aliens are constantly changing their bind variable values presenting skewed data all the time, and sometimes not even reporting how many rows there are. The name of the game would be Adapt and Conquer. Another adjective you could use would be Dynamic. Your space fleet’s motto might well be “Victory through Adaptive and Dynamic Plans.” In the world of SQL plans, Adaptive Cursor Sharing has already been introduced in the previous chapter. ACS deals with different combinations ...

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