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ORA-01530: a database already mounted by the instance ORACLE 报错 故障修复 远程处理

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ORA-01530: a database already mounted by the instance ORACLE 报错 故障修复 远程处理

文档解释

ORA-01530: a database already mounted by the instance

Cause: During ALTER DATABASE MOUNT, an attempt is being made to mount a database on an instance in which a database is or has previously been mounted.

Action: If you wish to mount the database, shutdown the instance and then startup the instance and retry the operation.

ORA-01530: 该错误表明,某个实例正在使用数据库,而另一个实例却尝试将其挂载。

官方解释

ORA-01530: 数据库已由某实例挂载。

此消息指示尝试将数据库挂载到将这个数据库的另一实例的操作失败。通常情况下,只有一个实例可以挂载一个数据库。如果想要将数据库挂载到另一个实例,则首先必须在当前的实例中取消挂载该数据库。

常见案例

Oracle在系统当中多实例可以存在,但是在这些实例之间,各自独立使用自己的数据库,因此,要将某个数据库挂载(Mount)到指定实例,必须先将其从原实例中取消挂载(UnMount),才能够将其挂载到新的实例中。如果不这么做的话,将会出现“ORA-01530”错误。

正常处理方法及步骤

1. 在原实例中,使用如下语句将数据库取消挂载(UnMount):

ALTER DATABASE UNMOUNT;

2. 然后,就可以在另一个实例中使用如下语句将数据库挂载(Mount):

ALTER DATABASE MOUNT;

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ORA-01530: a database already mounted by the instance ORACLE 报错 故障修复 远程处理

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