清单12展示了DB 2LUW中的联机数据库备份和恢复方法。
Listing 12 demonstrates online database backup and recovery methods in DB2 LUW.
例如，如果托管联机数据库应用程序或电子商务站点，则一定会成为攻击者的目标。
For example, if you host an online database application or e-commerce site, you can expect to be squarely in the sites of an attacker at some point.
攻击者将跟踪联机数据库等内容并试图获取以后会用到的有价值的信息——例如，信用卡或客户信息。
An attacker will go after content such as online databases with the intention of getting valuable information that can be used later-for example, credit card or customer information.
多维联机数据分析模型(MOLDA)是笔者根据多个项目的需要而研究和设计的一个联机分析处理(OLAP)系统模型。
MOLDA (Multi dimensional on Line Data analysis) is an OLAP system model, designed and developed by the author for the development of several business analysis projects.
假如你想要销售诸如电子书之类的下载资源的话，你就应该要将电子商务、SSL、数字传输、欺诈防范和联机数据库也加入到那份清单中去。
If you want to sell downloadable products such as ebooks, then you can add e-commerce, SSL, digital delivery, fraud prevention, and online databases to the list.
许多人的互联网冒险是始于美国在线（AOL），CompuServe联机数据库系统或者Prodigy联机服务系统，其提供的网上服务包括电子邮件、聊天室、讨论区等等。
Many people first ventured onto the internet from AOL,CompuServe and Prodigy, which were subscription-based online services that offered e-mail, chatrooms, discussion boards and so on.
与脱机备份不一样，联机备份只要求备份数据文件和控制文件。
Unlike offline backup, online backup only requires that data files and control files be backed up.
对于没有处在联机备份模式的那些数据文件，随后的检查点将在它们的文件头中添加scn。
For those data files not in the online backup mode, subsequent checkpoint will increase the SCN in their headers.
当发出这个命令时，处于联机备份模式的所有数据文件都将被发放检查点SCN。
When this command is issued, all data files that are in the online backup mode will be issued checkpoint SCN.
使用另一台计算机进行存储则意味着备份数据基本上是联机的和可用的。
Using storage on another machine means that the backup data is basically online and available.
对于联机备份数据文件，这将导致生成大量的重做日志。
This will result in enormous redo logs to be generated for online backup data files.
这样，无论用户处于脱机还是联机，都可以使用这个页面并维护用户的数据。
That way, the page is available and the user's data is maintained whether the user is online or offline.
在能够实时使用数据时，它将利用连接性优势并获得始终联机架构的全部优点。
It takes advantage of connectivity when available to work with data in real-time and realizes all the benefits of the always-online architecture.
注意，使用联机备份本身无法保证您不丢失数据。
Note that using online backup itself doesn't guarantee that you will not lose data.
脱机数据库的备份单位是整个数据库，而联机备份的备份单位是一些或全部表空间。
The unit of backup for offline database is the entire database, whereas the unit of backup for online backup is some or all table spaces.
在该模式下，当客户机联机时，用户与远程数据存储进行交互；而当客户机脱机时，用户与本地数据存储进行交互。
In this pattern, the user interacts with a remote data store when the client is online and interacts with a local data store when the client is offline.
该提供者实现了OLE DB的规范，以及联机分析处理(OLAP)和数据挖掘的扩展规范。
This provider implements both the OLE DB specification and the specification's extensions for online analytical processing (OLAP) and data mining.
对于联机备份，有两种可以采用的备份级别：表空间级和数据库级联机备份。
For online backups, there are two levels of backups that can be taken, table space and database level online backup.
此方法允许DBA先还原最重要的数据，使用户在联机模式下还原较次要的重要数据之前可以使用它们。
This approach allows the DBA to restore the most important data first, making it available to the users before restoring the less important data in online mode.
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。
Copy all data files, control files and online redo logs file to backup media.
误解：XQuery和联机分析处理(OLAP)以及数据仓库应用程序没有什么关系？
Misunderstanding: XQuery offers nothing to On-Line Analytical Processing (OLAP) and data warehousing applications.
当发出“AlterTablespace ts_nameEndBackup”时，在联机备份数据文件的的文件头中再次记录了检查点scn。
When Alter Tablespace ts_name End backup is issued, again a checkpoint SCN is recorded at the headers of online backup data files.
联机归档日志：它们是驻留在数据库日志目录(“online”)中、普通数据库活动不再需要的日志文件。
Online archived logs: These are the log files that reside in the database log directory (' online ') and are no longer needed for normal database activity.
如果是在数据库中，若用于脱机处理的数据(例如数据仓库)与用于联机处理的数据存储在一起，就会降低系统速度。
In the case of a database, data used for offline processing (such as data warehousing) might slow down the system if stored along with data for online processing.
通常该恢复是当数据库运行在ARCHIVELOG模式下和联机备份时取得的。
Typically this recovery is achieved when database is running in ARCHIVELOG mode and backup online.
脱机备份要求所有应用程序断开与数据库的连接，联机备份允许在备份的过程中继续执行事务。
Offline backup requires that all applications disconnect from the database, whereas online backup allows transactions to carry on while backup is in progress.
要通过CLP命令行提示执行联机表空间级和数据库级备份，请执行下面这些步骤。
To do an online table space and database level backup via CLP command prompt, follow the steps below.
用好的备份映像联机恢复数据库。
它提供了安全可靠的数据库环境，最适用于联机事务处理。
Best suited for online transaction processing, it provides secure and reliable database environment.
它提供了安全可靠的数据库环境，最适用于联机事务处理。
Best suited for online transaction processing, it provides secure and reliable database environment.
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