rollback
美 [ˈroʊlˌbæk] 
英 [ˈrəʊlˌbæk]
- n.回落；（情形、法律等的）回复
- 网络回滚；回滚事务；回退
词形变化
复数：rollbacks
英汉双解
1. | （价格或工资等的）下跌，回落a reduction in a price or in pay, to a past level |
2. | （情形、法律等的）回复，恢复the act of changing a situation, law, etc. back to what it was before |
英汉解释
英英解释
例句
Rollback is called if the installation of any component in the installation project fails.
如果安装项目中任何组件的安装失败，则会调用Rollback。
Rollback of a user-specified transaction to the last savepoint inside a transaction or to the beginning of a transaction.
将用户指定的事务回滚到事务内的上一个保存点或事务开头。
Upon transaction commit or rollback, the agent becomes idle and ready to service the requests assigned by the dispatcher.
事务一提交或回滚，代理就变为空闲的，并可以服务于分配器分配的请求。
It says there is "no question" of any rollback on its policy because ending fuel subsidies is essential to cut its budget deficit.
说，不撤销加价政策，取消燃油补贴是削减财政赤字的关键。
Using objects known as rollback segments, Oracle constructs read-consistent views of data as of the point in time a SQL statement is issued.
Oracle使用名为“回滚段”的对象在发出SQL语句的时间点处构造读取一致数据视图。
Backups at each stage of your migration enable you to rollback to a specific point in time of your migration process.
通过在迁移的每个阶段都进行备份，您可以回滚到迁移过程中的任何特定时点。
The only way to preclude such a cataclysm, the authors argue, is to adopt much tougher counter-measures: rollback, in Cold War terms.
该书的作者说，避免这场大灾难的唯一途径，就是采取更加严厉的反制措施：用冷战术语来说，就是“推回”（rollback）。
During the rollback, the message queue is uninstalled and the system is returned to its original state.
在回滚过程中，卸载消息队列，系统返回到其原始状态。
First, if a method did not start a transaction, it has no business managing that transaction (for example, marking it for rollback).
首先，如果某个方法没有启动事务，那么它就不需要管理事务（例如，将其标记为回滚）。
The rollback of that business, and the institution of the system we have today, began with blood.
这种商业模式的倒退，以及当今的这些制度和机构，都是从血液买卖开始的。
In the case of an error, the transaction logic can specify that the transaction rollback to a savepoint.
在发生错误的情况下，事务逻辑可以指定该事务回滚到某个保存点。
RAID snapshot system focuses on the system availability. System is ensured to run continuously by the rollback and recovery of data.
磁盘阵列快照系统的重点是提高系统的可用性，通过数据回滚和失效数据恢复策略来保障系统的连续运行。
Grouping such updates into a transaction allows a recovery (rollback) from the changes and returns the records to the pre transaction state.
将这样的更新群组成一笔交易将允许从变更中复原，并使得资料录回到尚未交易的状态。
After rollback, the database goes online, and no more transaction log backups can be applied to the database.
回滚后，数据库将进入在线状态，不能再将其他事务日志备份应用到数据库。
Leaving the existing installation intact also enables you to rollback your environment to the prior version, if necessary or desired.
保持现有安装的完整性还使您能够在必要时将环境回滚到先前版本。
For online backup, special care needs to be taken for the SYSTEM table space and rollback segments table space.
对于联机备份，需要特别注意SYSTEM表空间和回滚段表空间。
Without automatic COMMIT, a ROLLBACK undoes everything since the last explicit COMMIT.
如果没有自动COMMIT，则ROLLBACK将撤消上次显式COMMIT之后的所有操作。
If any errors occur along the way, all of the resources that have previously been installed are uninstalled in a rollback transaction.
如果进程中发生任何错误，将在一个回滚事务中卸载先前安装的所有资源。
The time you invest in writing rollback scripts should be proportionate to the cost of the deployment failure.
用于编写回滚脚本的时间应该与部署失败付出的代价成比例。
An autonomous transaction has its own COMMIT and ROLLBACK scope to ensure that its outcome does not affect the caller's uncommitted changes.
自治事务拥有自己的COMMIT和ROLLBACK范围，确保它的结果不会影响到调用方的未提交的变更。
It has transactions (commit and rollback), supports multiple connections with transactional isolation, and provides crash recovery.
Cloudscape也有事务（提交和回滚），能够通过事务隔离支持多个连接，并提供了崩溃恢复。
In the EJB implementation code, as a part of exception handling, set the transaction to Rollback, as shown in Figure 11.
在EJB实现代码中，作为异常处理的一部分将事务设置为Rollback，如图11所示。
The ROLLBACK statement would fail with the error: Rollback to savepoint disallowed on updating an old server in same transaction.
ROLLBACK语句将失败并收到一个错误：保存点回滚不允许在同一事务中更新较旧的服务器。
None of the statements executed before the rollback is, in fact, rolled back at the time this error occurs.
事实上，回滚之前执行的任何语句都不会在错误发生时回滚。
Note that using a ROLLBACK within a cursor is not a good programming practice and should be avoided.
注意，在游标内使用ROLLBACK是不好的做法，应该避免这么做。
The key to having the ability to rollback in many of these scenarios is to do frequent backups of stable state environments.
要能够在很多上述情况下实现回滚，关键是要经常对稳定状态环境进行备份。
Used to save information needed to perform a commit, rollback, or uninstall operation.
用于保存执行提交、回滚或卸载操作所需的信息。
If you want to rollback to the previous state of the system, simply click the Restore button, circled in Figure 6.
如果希望回滚到先前的系统状态，只需要单击Restore按钮，如图6中用圆圈圈住的内容所示。
Procedure is under transaction control and does not perform commit or rollback on its own.
过程在事务控制下执行，它自己不执行提交或回退。
Roll back the uncommitted transactions, but save the rollback operation in a file so the recovery effects can be undone.
回滚未提交的事务，但将回滚操作保存在一个文件中，以便可使恢复效果逆转。
However, the computer might not be fully reverted to its initial state after the rollback completes.
不过，复原完成之后，电脑可能无法完全还原至其初始状态。
Any subsequent reference to the cursor after the ROLLBACK statement results in an error indicating that the cursor was closed.
在ROLLBACK语句之后的对指针的任何后续引用将导致一个错误，表示该指针已被关闭。
Rollback attempts to restore the snapshots present at the time of the target snapshot.
回滚操作尝试恢复目标快照时刻的快照。
Likewise if the state is In Rollback, then the rule is to Undo any actions (our databases again use their Undo records).
同样，如果状态是InRollback，那么规则是撤销所有的动作（我们的数据库再次使用它们的Undo记录）。
Absolutely. It's time to take the issue back to Congress, and fight for a rollback of the duration of the copyright term.
现在可以肯定的是，我们应当将这一问题重新提交国会，为著作权保护期的回缩进行斗争。
If I wanted to recover the entire file system from the snapshot, I would execute the rollback command.
如果我希望从快照恢复整个文件系统，我可以执行rollback命令。
At the end of the transaction boundary (commit or rollback), the database agent is disassociated with the application.
在事务边界（提交或回滚）的末尾，数据库代理与应用程序分离。
So COMMIT and ROLLBACK statements are important building blocks of a transaction implementation.
因此COMMIT和ROLLBACK语句是事务实现的重要构建块。
Or, the password updates that originated on the rollback domain controller do not exist on replication partners.
或者，在回滚域控制器上更新的密码在复制伙伴上不存在。
USN rollback may affect the replication of any object or attribute in any partition.
USN回滚可能会影响任何分区中任何对象或属性的复制。
