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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_19

19. Comparing Execution Plans

Stelios Charalambides1 

(1)New Hampton, New Hampshire, USA

Comparing execution plans is one of the most useful diagnostic tests you can do. If you’re lucky enough to have a good execution plan, you can use that plan to correct the bad execution plan. In Chapter 8 we talked about using SQL Profiles to apply a plan onto another database’s SQL, in order to have an emergency option. Suppose, however, you have more time to consider the difference and try to fix it properly, rather than using the SQL Profile sticking plaster. SQLTCOMPARE is the tool for the job. It will compare two target systems for the ...

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Publisher Resources

ISBN: 9781484224359Purchase book