A . rollback
B . commit
C . help
D . update
[单选题]Oracle中关闭数据库时,不允许启动新事务,回滚到未提交事务并关闭实例的命令为:A.shutdownB.shutdown immediateC.shutdown abortD.shutdown nomount
[单选题]Oracle中关闭数据库时,不允许启动新事务,回滚到未提交事务并关闭实例的命令为:()A . shutdownB . shutdown immediateC . shutdown abortD . shutdown nomount
[单选题]Oracle事务提交即()。A . 数据由DBWR进程写入磁盘文件B . PMON进程提交C . SMON进程写数据D . LGWR进程成功写入日志
[单选题]开始事务,提交事务,回滚事务的英语单词分别是:A.begin transaction , rollback transaction , commit transactionB.commit transaction , rollback transaction , begin transactionC.rollback transaction , begin transaction , commit transactionD.begin transaction , commit transacti
[单选题]事务提交的SQL语句是()A.BEGIN TRANSACTIONB.COMMITC.ROLLBACKD.UNDO
[单选题]当(),Oracle才提交事务。A . DBRW进程将数据写回磁盘后B . LGWR进程将日志写入在线重做日志文件后C . PMON进程提交进程变化后D . SMON进程写入数据后
[单选题]在SQL中,实现事务的提交的语言是______。A.GRANTB.RElVOKEC.ROLLBACKD.COMMIT
[单选题]在SQL中,实现事务的提交的语言是______。A.GRANTB.REVOKEC.ROLLBACKD.COMMIT
[单选题]事务一旦提交,对数据库的改变是永久的,这是事务的()A . 原子性B . 一致性C . 隔离性D . 持续性