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alexzeng.wordpress.com | ||
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tonyhasler.wordpress.com
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| | | | | When a table is accessed by multiple members of a parallel query server set, the execution plan may show the use of block range granules (PX BLOCK ITERATOR) or partition granules (PX PARTITION [RANGE|LIST|HASH] ITERATOR or PX PARTITION [RANGE|LIST|HASH] ALL). The basic ideas surrounding these concepts are discussed in numerous blogs and books, including my... | |
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oracle-randolf.blogspot.com
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| | | | | Starting with version 12c Oracle obviously has introduced another parallel distribution method for direct path loads (applicable to INSERT A... | |
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jonathanlewis.wordpress.com
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| | | | | A recent thread on the OTN database forum asks the question: "... since redo also has past and current information why can't redo logs be used to retrieve that information? Why is undo required when redo already has all that information." The thread has generated some interesting replies - but to a large extent they... | |
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cleverheap.com
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| | | Vast of the today's applications leverage on some type of a database that provides ACID guarantees with transactions. It is important to know the differences between different isolation levels to facilitate the choice when applying them... | ||
