At this point, media problem could again be responsible or the map file (as specified in the lilo.conf file) could have had problems finding the descriptor tables.

此时，可能会再次出现介质问题，或者映射文件(如lilo . conf文件中所指定的)在寻找描述符表时可能会出现问题。

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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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