In general, it's desirable and recommended to have a high data hit ratio (80% or higher) and to have very high index hit ratio (90% or higher).

通常，推荐一个较高的数据命中率(80%或更高)和一个相当高的索引命中率(90%或更高)，这也是最理想的。

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Obviously, with availability of physical memory on the database server, a high buffer pool hit ratio is always better for your database performance.

显然，随着数据库服务器上物理内存的使用，高缓冲池命中率对于您的数据库性能而言始终比较好。

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Check that the cache size is sufficiently large and that the cache hit ratio is high for each of the dynamic SQL statements being executed.

对于每个被执行的动态sql语句，请检查高速缓存是否足够大且高速缓存的命中率是否较高。

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As for the investors, who have been hit for note repayments, they allege Rothschild knew Minoco was drilling in areas where there would be a high hit ratio but never enough oil to make the deals profitable, let alone repay the loans (FORBES, Nov. 19, 1984).

FORBES: Magazine Article

That logic seemed to work in January 2001 when the ratio hit a high of 0.97, suggesting that investors thought the index was ready to take off.

FORBES: Weight the Options

After recovering from a record low of negative 86% in December 2008, meaning that 86% of estimate changes were downgrades, the ratio hit a high of 25% in May but began to moderate in June to 22%.

FORBES: Stocks Are Cheap Enough To Absorb Earnings Downgrades