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www.bobbydurrettdba.com | ||
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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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leonotes.wordpress.com
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| | | | | ????????transitive closure?Wiki??????????Oracle????????... | |
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mauro-pagano.com
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| | | Most of the overall database performance issues (not caused by SQL tuning) are prettycomplex to setup because they require a workload and it takes quite some work to reproduce concurrency in a test environment where at best you got a couple folks testing some new code. Nowadays there are ways to reproduce a realistic workload... | ||
