有时不清楚一些参数的所有允许设定的值,可以由以下两个方法获得 1.直接输入错的值,让error来提示 代码如下: SQL> alter system set “_db_block_cache_protect”=what scope=spfile; alter system set “_db_block_cache_protect”=what scope=spfile * ERROR at line 1: ORA-00096: invalid value WHAT for parameter _db_block_cache_protect, must be from among TRUE, M