ORA-01100: database already mounted 是一个 Oracle 数据库错误,它表明用户尝试将一个已经处于挂载(mounted)状态的数据库再次挂载。在 Oracle 数据库中,数据库的启动过程包括三个阶段:NOMOUNT、MOUNT 和 OPEN。MOUNT 阶段是数据库实例与数据库的物理文件建立关联的过程。如果数据库已经处于 MOUNT 状态,则尝试再次执行...
ORA-01100: database already mounted.. Answer/amit i think "database already mounted" means that oracle instance is associated with your current database ( which ever you have database name (name may be "xe") ) so your new database in not creating because that instance ...