刷新buffer cache的方法

有时可能需要手工强制刷新buffer cache

在9i中使用：
当前session
alter session set events ‘immediate trace name flush_cache level 1′;
alter session set events = ‘immediate trace name flush_cache’;
全局
alter system set events = ‘immediate trace name flush_cache’;

在10g中使用：

buffer cache
alter system flush buffer_cache;

shared pool
alter system flush shared_pool;