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alexzeng.wordpress.com | ||
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jonathanlewis.wordpress.com
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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tonyhasler.wordpress.com
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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sqlmaria.com
Back in January, I promised I would write a series of blogs on some of my favorite new 12c enhancements, designed to make your life easier. I'm finally getting around to keeping that promise with t... |
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oracle-randolf.blogspot.com
Starting with version 12c Oracle obviously has introduced another parallel distribution method for direct path loads (applicable to INSERT A... |
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