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| | leonotes.wordpress.com
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| | ????????transitive closure?Wiki??????????Oracle????????...
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| | SQL_ID and/or PLAN_HASH_VALUE are used almost globally across Oracle database to identify query. This is not a case for SPM mechanism using...
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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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| On the OTN forum very often tuning requests about single SQL statements are posted, but the information provided is rather limited, and ther...