echo 1 > /proc/sys/vm/drop_caches ( as of 2.6 kernel )
http://mtj.wordpress.com/2006/10/18/clearing-linux-filesystem-read-cache/
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About me
Lista mea de bloguri
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Announcement: Webinars for “Oracle Indexing Internals and Best Practices” Now Confirmed !! - Exciting News !! I can now confirm the dates for my first webinars of my fully updated and highly acclaimed “Oracle Indexing Internals and Best Practice” s...
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Speaking At DOAG 2018 Conference And IT Tage 2018 - I will be speaking at the yearly DOAG conference in December as well as at the IT Tage in November. My talk will be "Oracle Optimizer System Statistics Upd...Acum 4 zile
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Critical Patch Update for July 2018 Now Available - The Critical Patch Update (CPU) for July 2018 was released on July 17, 2018. Oracle strongly recommends applying the patches as soon as possible. The Criti...Acum 5 zile
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Direct IOT - A recent (automatic ?) tweet from Connor McDonald highlighted an article he’d written a couple of years ago about an enhancement introduced in 12c that all...Acum o săptămână
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12C Grid – GENO process causes high CPU usage - This is an interesting bug which has affected a number of our databases – perhaps because we are not patched to the latest levels in every case. The MoS n...Acum o săptămână
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Global Temporary Table -- revisited - Revisiting the previous case in a 12.2 PDB .... (This time, the two sessions by "HEMANT" and "SYSTEM" have the Username as the SQL prompt) In the previous...Acum 3 săptămâni
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My Performance & Troubleshooting scripts (TPT) for Oracle are now in GitHub and open sourced - I have uploaded my TPT-oracle scripts to GitHub and have formally open sourced them under Apache 2.0 license as well. This allows companies to embed this s...Acum 2 luni
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Hotsos Symposium 2018 - Just a quick note to say I’m doing a couple of talks at this year’s Hotsos Symposium, which starts next Monday at 8:30AM. It’s not too late to register. As...Acum 4 luni
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MariaDB - a surprise dependent subquery execution plan - Welcome myself into the MySQL world. While working with MariaDB 10.0.21, there are two queries as shown below, one uses alias and the other does not, seems...Acum 2 ani
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We have moved! - You might have been wondering why things had gone so quiet on the Optimizer development team's blog Optimizer Magic over the last few months. Well the blog...Acum 7 ani
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