Comments on: Oracle 11G Result Cache in the Real World http://www.pythian.com/news/1004/oracle-11g-result-cache-in-the-real-world/ News and views from Pythian DBAs Fri, 10 Feb 2012 13:01:25 +0000 hourly 1 http://wordpress.org/?v=3.0.4 By: 11gr2 SQL result cache test notes « Oracle Explorer: Standing on the shoulders of giants http://www.pythian.com/news/1004/oracle-11g-result-cache-in-the-real-world/#comment-587817 11gr2 SQL result cache test notes « Oracle Explorer: Standing on the shoulders of giants Mon, 05 Sep 2011 01:39:26 +0000 http://www.pythian.com/blogs/1004/oracle-11g-result-cache-in-the-real-world#comment-587817 [...] Concurrence/Scalability issues: only protected by 3 latches in 11gR2. Reference: http://www.pythian.com/news/1004/oracle-11g-result-cache-in-the-real-world/ [...] [...] Concurrence/Scalability issues: only protected by 3 latches in 11gR2. Reference: http://www.pythian.com/news/1004/oracle-11g-result-cache-in-the-real-world/ [...]

]]> By: Alex Zeng http://www.pythian.com/news/1004/oracle-11g-result-cache-in-the-real-world/#comment-583975 Alex Zeng Sun, 28 Aug 2011 11:22:56 +0000 http://www.pythian.com/blogs/1004/oracle-11g-result-cache-in-the-real-world#comment-583975 I go through all your documents I can get about result cache. I learned a lot. Thank you! I go through all your documents I can get about result cache. I learned a lot. Thank you!

]]> By: StoredProc http://www.pythian.com/news/1004/oracle-11g-result-cache-in-the-real-world/#comment-531235 StoredProc Fri, 08 Apr 2011 01:14:14 +0000 http://www.pythian.com/blogs/1004/oracle-11g-result-cache-in-the-real-world#comment-531235 Tests by Alex now show the "the situation has drastically improved in 11GR2 ..." Tests by Alex now show the “the situation has drastically improved in 11GR2 …”

]]> By: Stored Procedures Pros & Cons | Peter Meinl's Blog http://www.pythian.com/news/1004/oracle-11g-result-cache-in-the-real-world/#comment-522521 Stored Procedures Pros & Cons | Peter Meinl's Blog Fri, 18 Mar 2011 22:52:59 +0000 http://www.pythian.com/blogs/1004/oracle-11g-result-cache-in-the-real-world#comment-522521 [...] apps may benefit  using Oracle’s result caching in SP’s.. Oracle offers a “Client Result Cache” feature for caching in the [...] [...] apps may benefit  using Oracle’s result caching in SP’s.. Oracle offers a “Client Result Cache” feature for caching in the [...]

]]> By: RC http://www.pythian.com/news/1004/oracle-11g-result-cache-in-the-real-world/#comment-373270 RC Thu, 03 Sep 2009 19:54:45 +0000 http://www.pythian.com/blogs/1004/oracle-11g-result-cache-in-the-real-world#comment-373270 Maybe you can redo these tests with 11gr2? Maybe you can redo these tests with 11gr2?

]]> By: Reporting from Perth AUSOUG Conference 2008 http://www.pythian.com/news/1004/oracle-11g-result-cache-in-the-real-world/#comment-288488 Reporting from Perth AUSOUG Conference 2008 Thu, 09 Oct 2008 21:23:40 +0000 http://www.pythian.com/blogs/1004/oracle-11g-result-cache-in-the-real-world#comment-288488 [...] about SQL and PL/SQL Result Cache. Thanks to Penny for mentioning Alex Fatkulin’s posts on this topic and debates it [...] [...] about SQL and PL/SQL Result Cache. Thanks to Penny for mentioning Alex Fatkulin’s posts on this topic and debates it [...]

]]> By: Alex Fatkulin http://www.pythian.com/news/1004/oracle-11g-result-cache-in-the-real-world/#comment-202111 Alex Fatkulin Tue, 20 May 2008 18:37:55 +0000 http://www.pythian.com/blogs/1004/oracle-11g-result-cache-in-the-real-world#comment-202111 Shakir, "if the cache is able to spread the load across objects as well" no it is not -- the entire cache is protected by a single latch for details on RC latch dynamics, please see: http://www.pythian.com/blogs/598/oracle-11g-query-result-cache-rc-latches Shakir,

“if the cache is able to spread the load across objects as well”

no it is not — the entire cache is protected by a single latch

for details on RC latch dynamics, please see:

http://www.pythian.com/blogs/598/oracle-11g-query-result-cache-rc-latches

]]> By: Shakir Sadikali http://www.pythian.com/news/1004/oracle-11g-result-cache-in-the-real-world/#comment-202095 Shakir Sadikali Tue, 20 May 2008 17:34:34 +0000 http://www.pythian.com/blogs/1004/oracle-11g-result-cache-in-the-real-world#comment-202095 Nice post Alex. Many of the clients i support on my team express exactly this type of usage pattern. They don't follow the standard 20% of user do 80% of the work rule. It really is random and your example shows quite well what type of behaviour we'd see on our systems. I'm curious to know how the example would far if you added a few more tables into the mix to see if the cache is able to spread the load across objects as well. Nice post Alex. Many of the clients i support on my team express exactly this type of usage pattern. They don’t follow the standard 20% of user do 80% of the work rule. It really is random and your example shows quite well what type of behaviour we’d see on our systems. I’m curious to know how the example would far if you added a few more tables into the mix to see if the cache is able to spread the load across objects as well.

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