标题: ORA-00021: session attached to some other process; cannot switch session [打印本页] 作者: admin 时间: 2016-7-7 10:48 标题: ORA-00021: session attached to some other process; cannot switch session ORA-00021: session attached to some other process; cannot switch session Cause: The user session is currently used by others. Action: Do not switch to a session attached to some other process.