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there are two types of parses (well, actually "three" these days).
o hard parse -- the query has never been seen before, isn´t in the shared pool. 【程序编程相关:Ado.NET 系列quiz】they are 【推荐阅读:不变对象，可变对象，equals和==】security check it, optimize it, etc (lots of work). 【扩展信息:成功人士的七种精神锻炼方式 -- 像成功】we must parse it, hash it, look in the shared pool for it, don´t find it, o soft parse -- the query has been seen before, is in the shared poo. we have to parse it, hash it, look in the shared pool for it and find it (less work then a hard parse but work none the less)o a kinder, softer soft parse -- you are using session_cached_cursors (search this site for that word for info). we take your query, look in the sessions curso... 下一页