标题: ORA-01530: a database already mounted by the instance [打印本页] 作者: admin 时间: 2016-7-17 15:05 标题: ORA-01530: a database already mounted by the instance 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.