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oracle-randolf.blogspot.com
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| | | | | When attempting to display only the first n rows of a result set that is ordered the Oracle optimizer offers special optimizations for these... | |
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jonathanlewis.wordpress.com
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| | | | | Here's a simple detail about bind peeking (during optimisation) that makes a big difference to "fetch first/next" queries. The optimizer knows about your bind types, and can peek at the bind values - but that doesn't mean it will do something sensible with them. Here's a little model to demonstrate the problem - starting with... | |
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afatkulin.blogspot.com
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| | | | | In my previous blog post I've explained a nice little feature introduced to Oracle Text Context indexes in 11G which allows you to do effic... | |
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jonathanlewis.wordpress.com
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| | | Here's a little thing that Dan Morgan mentioned to me some time ago. It's a little routine from a package (owned by sys) that appeared in 11.2.0.3 that gives you some idea of the mess hidden behind a query that uses views. The procedure is called dbms_sql2.expand_sql_text and it takes two (CLOB) parameters: an IN | ||