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mauro-pagano.com | ||
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blog.jooq.org
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| | | | | We check execution plans and benchmark results to see if using a LIMIT clause is useful when checking for existence of N values in SQL | |
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mahmoudhatem.wordpress.com
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| | | | | Since oracle 12.2.0.1 Adaptive Dynamic Sampling result are stored inside SPD as a special directive type "DYNAMIC_SAMPLING_RESULT". This will allow the result of ADS to be persisted on disk,thus it will survive memory flush and database restart.For more detailed info please check Mauro Pagano blog Post Something new about SQL Plan Directives and 12.2 We... | |
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www.bobbydurrettdba.com
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| | | | | We have been discussing query tuning at work and I've come back to an example of the Oracle optimizer choosing the wrong plan due to an error in its calculation of the number of rows returned... | |
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kerryosborne.oracle-guy.com
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