The primary and standby database name for the HADR setup is jsbmain.
这个HADR设置的主数据库名和备用数据库名是jsbmain。
The data on the standby database might be modified based on client requests.
备用数据库上的数据可能根据客户端请求进行了修改。
Once the application retries, it should obtain a new connection to the standby database.
在应用程序重新尝试连接之后，它应获得一个到备用数据库的新连接。
The log files generated on the standby database cannot be applied on the source database.
在备用数据库上生成的日志文件不能应用于源数据库。
The user applications will have to make new connections to this activated standby database.
而用户应用程序必须重新建立到这个被激活的备用数据库的连接。
Here are the steps required on the target system to use a split mirror as a standby database.
为了使用分割镜像作为备用数据库，必须在目标系统上执行以下步骤。
Connect to the standby database and start HADR on the standby server by executing the start HADR command.
连接备用数据库，执行STARTHADR命令在备用服务器上启动HADR。
Assign appropriate values to the HADR configuration parameters for both the primary and the standby database.
给主和备用数据库的HADR配置参数设置适当的值。
Once you have created the standby database, do not use the ROLLFORWARD DATABASE command as a recovery option.
创建备用数据库之后，不要使用ROLLFORWARDDATABASE命令作为恢复选项。
Once the takeover takes place, WebSphere Application Server will establish new connections to the standby database.
在接管发生之后，WebSphereApplicationServer将建立到备用数据库的新连接。
Once the database is in a consistent state, users can switch over to the standby database to continue their work.
一旦数据库处于一致状态，用户就可以切换到备用数据库，以便继续他们的工作。
When a standby database is open for read-only access, users can query the standby database but cannot update it.
当备库是以只读方式打开时，用户只能在备库上查询而不能更新它。
Similarly, you can drop log file groups or members from the primary database without affecting your standby database.
同样的，你可以在主库删除日志文件组或成员而不影响你的备库。
Execute the following commands on the standby server (Node3) to make this database the standby database for the HADR setup.
在备用服务器(Node3)上执行以下命令，让这个数据库成为HADR设置的备用数据库。
You can add or drop online redo log file groups or members to the primary database without affecting the standby database.
你可以在主库添加或删除在线重做日志组或者日志成员而不影响备库。
You will need to wait until the standby database makes a connection with the primary database to get both databases in peer mode.
您需要等待备用数据库连接到主要数据库之后，才能使两个数据库处于对等模式。
Determine the host name, host IP address, and the service name or port number for both the primary and the standby database server.
决定主和备用数据库服务器的主机名、主机ip地址和服务名或端口号。
To take advantage of HADR, you must have two dedicated servers available: one for the primary database and one for the standby database.
要想使用 HADR，必须有两个专用的服务器：一个用于运行主数据库，一个用于备用数据库。
On the standby machine, first deactivate the database and then issue the start hadr command to start it as the standby database (Listing 7).
在备用计算机上，首先禁用数据库，然后发出starthadr命令，将其作为备用数据库启动(清单7)。
The results of performing a roll-forward recovery operation could differ slightly from replaying the logs on the standby database using HADR.
执行前滚恢复操作的结果与使用 HADR在备用数据库上重播日志的结果略有不同。
If the source database becomes unavailable (for example, if it crashes), the standby database on the target system can be activated for user access.
如果源数据库变得不可用(例如，它崩溃了)，那么可以激活目标系统上的备用数据库，以供用户访问。
You can alternate between having a physical standby database open for read-only access and performing Redo Apply using the following procedures.
你可以使用以下过程在物理备库只读方式打开访问和执行重做应用来轮流切换。
If one of the servers in the high availability cluster fails, then the clustering software transfers the workload to the idle standby database server.
如果高可用性集群中某一个服务器出故障，那么集群软件就会将工作负载转移到idle备用数据库服务器。
You can keep a standby database current with its original database by continuously applying the original archived redo logs to the standby database.
可以弄一个和源数据库一样的备份数据库，通过源数据库生成的归档日志文件，把源数据库里的数据同步到备份数据库中。
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。
Asynchronous: Committing a database change on the primary database is not held up in any way by the communication of log records to the standby database.
Asynchronous：并不以任何方式推迟提交主数据库上的数据修改，日志记录异步地传输给备用数据库。
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。
If a complete site failure occurs at the primary site, data availability is maintained by having the remote standby database take over as the primary database.
如果主站点发生全站点事故，远程备用数据库会接替主数据库，从而保持数据可用性。
DB2 UDB allows you to take a full database backup of a standby database (if it only contains DMS tablespaces) while it is in the rollforward pending state.
当备用数据库(假设只包含dms表空间)处于前滚暂挂(rollforward pending)状态时，DB 2UDB允许对它做完全数据库备份。
When using the RESTORE database command to create the standby database from a backup image, IBM recommends that the REPLACE HISTORY FILE option be specified.
在使用RESTOREDATABASE命令从备份映像创建备用数据库时，IBM建议指定REPLACEHISTORYFILE选项。
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