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Oracle SQL Tuning with Oracle SQLTXPLAIN: Oracle Database 12c Edition, Second Edition
book

Oracle SQL Tuning with Oracle SQLTXPLAIN: Oracle Database 12c Edition, Second Edition

by Stelios Charalambides
April 2017
Intermediate to advanced
436 pages
12h 7m
English
Apress
Content preview from Oracle SQL Tuning with Oracle SQLTXPLAIN: Oracle Database 12c Edition, Second Edition

© Stelios Charalambides  2017

Stelios Charalambides, Oracle SQL Tuning with Oracle SQLTXPLAIN, 10.1007/978-1-4842-2436-6_17

17. Using XPLORE to Investigate Unexpected Plan Changes

Stelios Charalambides1 

(1)New Hampton, New Hampshire, USA

I’m sure by now you’re thinking that SQLTXPLAIN is a pretty cool tool to be familiar with, if you want to tune Oracle SQL. In Chapter 16 we discussed the test case utility and how that could build an entire environment for testing SQL, system parameter, optimizer settings, objects statistics, and enough of the settings in fact to make the optimizer behave as if it was on the source system.

Once you achieve that state you have a superb environment to go exploring the optimizer’s choices. This intelligent, directed ...

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ISBN: 9781484224359Purchase book