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afatkulin.blogspot.com | ||
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antognini.ch
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dincosman.com
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| | | | | The performance issue with an SQL query was resolved by using the /*+ PARALLEL(2) */ hint, reducing execution time from 180-200 seconds to milliseconds. The decision to perform a direct read from disk to memory instead of reading blocks from disk was made by the database engine and is controlled by the hidden "_serial_direct_read" parameter.... | |
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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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antognini.ch
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