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Oracle Exadata Survival Guide by Mary Mikell Spence, David Fitzjarrell

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CHAPTER 4

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Smart Flash Cache

The Smart Flash Cache can wear many hats: it’s a cache; it’s a flash component of the log writer process; and it can be configured as flash disk. Because this component is so versatile, it’s worthwhile to see how it works, what it does, what it’s made of, and how it can be configured as one or more ASM disk groups.

Flash Me

The Smart Flash Cache provides Exadata with the ability to deliver a high I/O-per-second (IOPS) rate, by caching frequently accessed data and allowing it to be read directly from flash memory, rather than from disk or RAM. It does this by caching frequently used table and index blocks for later ...

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