那个足球一路颠跳着向前滚去。
彼得拔腿就跑，头也不抬地冲下山坡，翻着跟斗向前滚。
Peter shot off and rushed head over heels down the mountain-side, turning wild somersaults on his perilous way.
前滚到日志的最后，然后停止
可以只进行恢复而不进行前滚。
不进行前滚会使数据库处于未决模式。
您可以通过日志前滚到所选择的某个 PIT 上。
You can roll forward through the logs to a PIT of your choice.
这两个参数中的任何一个都足以允许前滚恢复方法。
Either of the two parameters is sufficient to allow the roll-forward recovery method.
这两个参数中的任何一个都足以允许前滚恢复方法。
Either one of the two parameters is sufficient to allow the roll-forward recovery method.
您需要使用此命令前滚数据库（请参阅清单17）。
You need to roll forward your database by using this command (also in Listing 17).
此进程在回滚、重启恢复和前滚期间读取日志文件。
This process reads log files during rollback, restart recovery and roll forward.
在CLP中，可以发出以下命令来执行恢复，并前滚表空间。
In the CLP, you will issue the following to do a restore and roll forward a table space.
要恢复增量备份，只需要两步，恢复增量数据库并前滚。
To recover from the incremental backup, there are only two steps to follow, Restore the incremental database and roll forward to completion.
Recovery—表示保留日志，且可以用于前滚恢复。
Recovery - to indicate that the logs are retained, and can be used for forward recovery.
因此，用源数据库中的任何日志进行前滚都是行不通的。
Therefore, rollforward through any of the logs from the source database is not possible.
在前滚过程中可以更改此配置参数以允许您访问多个位置中的日志。
You can change this configuration parameter during the roll-forward process to allow you to access logs in multiple locations.
在CLP中，您将发出下面的命令来执行恢复，并前滚整个数据库。
In the CLP, you will issue the following commands to do a restore and roll forward a full database.
在没有前滚操作的情况下，使用备份映像来恢复表空间。
Restore table space using the backup image without rolling forward.
在使用表空间之前，必须前滚该表空间(或是整个数据库)。
The table space (or the entire database) must be rolled forward before the table space can be used.
前滚所需要的日志可以从默认日志目录或溢出路径中选择。
You can either pick from the default log directory or overflow path.
他还可以将数据库前滚到应用程序破坏数据之前的一个时间点。
He is also able to roll the database forward to a point in time just before the application did its damage.
但是注意，可以选择前滚到给定的本地时间(新特性)或GMT时间。
Note, however, that you have the option to roll forward to a given local time (new feature) or GMT time.
表空间或数据库的恢复可以通过恢复备份映像和前滚来完成。
The restore for table Spaces or database can be done by restoring a backup image and rolling forward.
手动地确定前滚一个数据库的正确时间点比较困难，对于分区数据库更是如此。
Manually determining the correct point in time to which to roll forward a database is difficult, particularly for a partitioned database.
如果取消选择这两个参数，就不能对数据库进行前滚恢复，因为将不再保留日志。
If both of these parameters are de-selected, roll-forward recovery becomes unavailable for the database because logs will no longer be retained.
使用恢复任务助手恢复数据库，并前滚到运行delete语句之前的时间点。
Use the restore task assistant to restore the database and roll forward to a point in time before the delete statements were run.
不断地复制或获取源数据库上的非活动日志文件，并在目标数据库上前滚它们。
Continually copy over or retrieve the inactive log files from the source database and roll them forward on the target database.
不断地复制或获取源数据库上的非活动日志文件，并在目标数据库上前滚它们。
Continually copy over or retrieve the inactive log files from the source database and roll them forward on the target database.
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