The default – or at least a very common - configuration for Exadata is to configure all the flash as Exadata Smart Flash Cache (ESFC). This is a simple and generally performant configuration, but won’t be the best choice for all cases. In particular, if you have table which is performance critical, and it could fit in the flash storage you have available, you might be better off configuring some of your flash as grid disk, creating an ASM disk group from that, and putting the table there...(read more)![]()
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