Set the catalog cache, package cache, and log buffer size to an appropriate size to improve performance.

要设置大小适当的目录缓存器、包缓存器和日志缓冲区以提高性能。

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Identify problems with memory, including low buffer pool hit ratios, catalog cache hit ratios, and package cache hit ratios.

识别内存问题，包括较低的缓冲池命中率、较低的目录缓存命中率和较低的包缓存命中率。

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The catalog cache is used to store table descriptor information that is used when the tables, views, or alias have been referenced in previous statements.

目录缓存器用于存储表描述符信息，而在先前的语句中引用表、视图或别名时将使用该信息。

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