This is similar to the ORACLE_SID (System Identifier) which is also used when users want to switch between instances.
这类似于ORACLE_SID(系统标识符)，当用户想要在不同实例之间进行切换时，也是使用ORACLE_SID。
This is similar to the ORACLE_SID (System Identifier) which is also used when users want to switch between instances.
这类似于ORACLE_SID(系统标识符)，当用户想要在不同实例之间进行切换时，也是使用ORACLE_SID。
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