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dincosman.com | ||
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www.pythian.com
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| | | | | Learn how a function-based index impacted parallel INSERT performance in Oracle 19.24, causing a shift to serial execution and how to resolve it. | |
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blog.tanelpoder.com
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| | | | | 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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www.pythian.com
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| | | | | An explanation of how partitioning can be used to join two large tables. | |
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kerryosborne.oracle-guy.com
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| | | [AI summary] The article discusses techniques for using SQL Profiles to influence query optimization in Oracle databases, building on previous methods like outline switching. | ||
