This will result in enormous redo logs to be generated for online backup data files.
对于联机备份数据文件，这将导致生成大量的重做日志。
Copy all data files, control files and online redo logs file to backup media.
将所有数据文件、控制文件和联机重做日志文件复制到备份媒介。
Checkpoint (CKPt) - Synchronizes the headers of data files and control files with the current redo log and checkpoint Numbers.
检查点(CKPt)——将数据文件头和控制文件头与当前重做日志和检查点数同步。
Redo Logfile Sizing Advisor - This feature recommends the optimal size of redo log files in order to avoid excessive disk I/Os due to frequent checkpointing.
RedoLogfile SizingAdvisor ——此特性推荐重做日志文件的最佳大小，从而避免因频繁出现的检查点而导致过多的磁盘I/O。
Steps such as immunizing ther database by multiplexing (putting in different locations) control files, using online redo logs and archiving redo logs are necessary to avoid a single point of failure.
像通过多路复用(放在不同的位置)控制文件使数据库免疫、使用联机重做日志和归档重做日志这样的步骤，都是避免单点故障所必需的。
Redo logs - Files that contain the before and after images of changed data.
重做日志——包含更改数据的前后映像的文件。
If Redo Apply is running, you must cancel Redo Apply before you can change the log files.
如果重做应用正在运行，你必须在你改变日志文件钱取消重做应用。
Log Writer (LGWr) - Writes entries from log buffer to redo the log files.
日志读写器(LGWr)——从日志缓冲区写入项目，以便重做日志文件。
Changing the size and number of the online redo log files is sometimes done to tune the database.
改变在线重做日志文件大小和数量有时是优化数据库。
The maximum protection and maximum availability modes require that standby redo log files are configured on at least one standby database in the configuration.
最大保护和最大可用性模式需要备重做日志文件配置在配置中的至少一个备数据库上。
At some point, you need to resume redo apply on the standby database, and apply the archived redo log files to resynchronize the standby database with the primary database.
在有点伤，你需要在备库上重新应用重做数据，应用归档日志来同步备库和主库之间的数据。
Whenever you add an online redo log file to the primary database, you should add corresponding online and standby redo log files to the standby database.
无论何时，你在主库添加在线重做日志文件，你应该在备库添加相应的在线重做日志和备用重做日志文件。
When a physical standby database is open, redo data from the primary database is received by the standby database, but the log files are not applied.
当物理备库是打开时，来自主库的重做数据被备库接收，但是不会被应用。
The on-disk RBA is the point up to which LGWR has flushed the redo thread to the online log files.
磁碟央行是这点已刷新LGWR的重做线程的在线日志文件。
Creates the online redo log files if they do not currently exist.
联机日志损坏，不能做完整修复时，用的。
Creates the online redo log files if they do not currently exist.
联机日志损坏，不能做完整修复时，用的。
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