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alexzeng.wordpress.com | ||
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tonyhasler.wordpress.com
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| | | | | As has happened a couple of times recently, comments on a blog of mine have helped me understand the subject matter on which I am commenting far better. In this case a dialogue with Dom Brooks on my previous blog on how to simulate a stored outline/SQL baseline with FORCE_MATCH using SQL profiles has provided... | |
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www.bobbydurrettdba.com
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| | | | | Sunday night we worked with Oracle Support on a performance issue with a query that had been running for over 14 hours even though it ran the previous weekend in five minutes. Oracle Support showe... | |
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jonathanlewis.wordpress.com
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| | | | | Following yesterday's note on SQL Profiles, someone asked how I detect that an opt_estimate hint had been used - with specific reference to the "index_scan" option. The reason for this particular choice is that other opt_estimate hints have a highly visible impact in the 10053 trace files, but this one doesn't. Here are a few... | |
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savvinov.com
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| | | In this post, I continue on the topic of examining SQL plans. I will talk about one DBMS_XPLAN function, DISPLAY_CURSOR (because it's probably the most useful one when troubleshooting ongoing performance issues, and also because other functions have a lot of similiarity to it). I will discuss frequently used options and some common problems. Preparation... | ||