I’ve been doing some performance benchmarks on our exadata box specifically focusing on the performance of the smart flash cache. I found that even if I switched the CELL_FLASH_CACHE storage setting to NONE, the flash cache will still keep cached blocks in flash and would therefore give me artificially high values for “cell flash cache read hits” statistic when I set CELL_FLASH_CACHE back to DEFAULT or KEEP. What I needed was a way to flush the Exadata flash cache.
Unfortunately...(read more)![]()
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