包缓存器设置数据库全局内存的总量以用于缓存程序包的静态和动态sql语句。
The package cache sets the amount of database global memory to be used for caching a package's static and dynamic SQL statements.
数据库共享内存：这是数据库全局内存，是在激活数据库或者第一次连接到数据库时分配的。
Database Shared memory: This refers to the database global memory, which is allocated when the database is activated or connected to for the first time.
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