标题: ORA-19957: database should have no datafiles in unknown state Cause: The oper... [打印本页] 作者: admin 时间: 2016-8-31 16:44 标题: ORA-19957: database should have no datafiles in unknown state Cause: The oper... ORA-19957: databaseshould have no datafiles in unknown state Cause: The operation failed because the database had one ormore datafiles that
were in an unknown state. Action: Dropthe datafiles or recover them and bring them online.