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http://docs.oracle.com/cd/A84870_01/doc/server.816/a76992.pdfhttp://www.pafumi.net/

http://www.oratechinfo.co.uk/ansi_joins.html

http://oracleinaction.com/tune-pga-i/

http://www.dbspecialists.com/blog/database-backups/understanding-oracle-redo/

https://www.google.com/search?q=oracle+iops+statistics&ei=JxO6U-G9JYOzyASl1oH4DA&start=10&sa=N&biw=1280&bih=709

http://flashdba.com/2014/02/26/oracle-awr-reports-understanding-io-statistics/

http://flashdba.com/2013/04/15/understanding-io-random-vs-sequential/

http://www.databasejournal.com/features/oracle/article.php/3726391/Measuring-Disk-IO.htm

http://srivenukadiyala.wordpress.com/2011/02/18/calculate-iops-for-a-database-instance/

http://otipstricks.blogspot.com/2012/03/iops-requirements.html

http://www.oracleangels.com/search/label/11gR2%20RAC

http://grokbase.com/t/freelists.org/oracle-l/116a6pyd7c/how-to-caliculate-the-io-demand-for-iops-and-throughtput

https://www.google.com/search?q=SAMPLE_TIME++MODULE++++SQL_ID+++EVENT+++COUNT(1)+BLOCKING_SESSION&ei=z9rXU6nzDIaxyATnuIKADg&start=20&sa=N&biw=1680&bih=959

http://www.vitalsofttech.com/ash-blocking-events/

http://www.slideshare.net/kellynpotvin/ash-and-awr-deep-dive-hotsos

https://orastory.wordpress.com/category/11g/

https://orastory.wordpress.com/2013/07/12/failed-logins-can-cause-row-cache-lock-on-dc_users/

http://harshitvermanewbie.blogspot.com/2012/10/find-running-query-in-oracle.html

http://www.dbspeed.com/case_study/CPU_Spikes_and_Top_CPU_SQL.html

http://www.dba-oracle.com/t_shared_pool_internals.htm

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http://docs.oracle.com/database/121/REFRN/stats002.htm#i375475

https://www.google.com/search?q=awr+io+profile+section&ei=AXW_U5XJDIKfyATPhoCIDw&start=40&sa=N&biw=1280&bih=709

http://www.flyfish576.com/wordpress/archives/80.html

http://wenku.baidu.com/view/08a8c305a6c30c2259019ebc.htmlhttp://www.perfluent.com/nirvana--it/a-laymans-guide-to-interpreting-oracle-awr-reports-take-two-io-waits

http://www.databasejournal.com/features/oracle/article.php/3917631/Identifying-and-Evaluating-IO-Bottlenecks-in-Oracle-Database.htmhttp://texasmemory.blogspot.com/2012/03/using-awr-or-statspack-for-tier-zero.html

https://community.emc.com/docs/DOC-31573

http://oraclewindow.blogspot.com/2013/05/how-to-read-awr-reports.html

http://blog.csdn.net/wuweilong/article/details/7572456

http://talebzadehmich.wordpress.com/2012/06/13/understanding-awr-report/

http://www.wilsonmar.com/1oraarch.htm

http://oracleebspro.blogspot.com/2013/03/understanding-explain-plan.html

http://shaharear.blogspot.com/2008/10/parse-to-execute-ratio.html

http://shaharear.blogspot.com/search/label/Oracle%20Tuning

http://oracle-tek.blogspot.com/2008/10/execute-to-parse-ratio.html

https://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1594740500346667363

http://santhanamuthu.blogspot.com/2010/10/execute-to-parse-is-low.html

http://jeergall.files.wordpress.com/2011/12/whattoseeinstatspackreport1.pdf

http://savvinov.com/2013/10/14/ash-basics/

http://www.oracle-base.com/articles/10g/active-session-history.php