• An instance is a set of background processes and shared memory.
• A database is a collection of data stored on disk.
• An instance can mount and open only a single database, ever.
• A database may be mounted and opened by one or more instances (using RAC).
这是tom大师总结的数据库和实例的概念!!
拿来在回味一下!!!
来自 “ ITPUB博客 ” ,链接:https://blog.itpub.net/7551038/viewspace-614200/
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