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oracle-base.com | ||
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www.salvis.com
Database centric development |
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hemantoracledba.blogspot.com
An Oracle Database DBA (Database Administration) Blog. |
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obiee.co.uk
Why did Mozart kill all his chickens? Because when he asked them who the best composer was, they all said, "Bach, Bach, Bach." Did you know today was #ShowUsYourCode day?It's a f... |
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blog.tanelpoder.com
Hello all fellow Oracle geeks and technology enthusiasts! Long time no see ;-) In the hacking session about Oracle full table scans and direct path reads I explained how the direct path read decision is not done by the optimizer, but instead during every execution, separately for every single segment (partition) scanned in the query. I also explained how the _small_table_thresholdparameter and theX$KCBOQH.NUM_BUF(which keeps track of how many buffers of any segment are currently cached) are used for determining whether to scan using direct path reads or not. - Linux, Oracle, SQL performance tuning and troubleshooting training & writing. |
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