标题: ORA-01531: a database already open by the instance [打印本页] 作者: admin 时间: 2016-7-17 15:05 标题: ORA-01531: a database already open by the instance ORA-01531: a database already open by the instance Cause: During ALTER DATABASE, an attempt was made to open a database on
an instance for which there is already an open database. Action: If you wish to open a new database on the instance, first shutdown the
instance and then startup the instance and retry the operation.