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- And its copy of the database is the current mirror database. 其数据库副本为当前的镜像数据库。
- Verify that the mirror server has enough disk space for the mirror database. 验证镜像服务器能为镜像数据库提供足够的磁盘空间。
- Make sure that the mirror database is ready for mirroring. 确保镜像数据库已为镜像做好准备。
- The contents of the mirror database are lagging behind the contents of the principal database. 镜像数据库的内容滞后于主体数据库的内容。
- Forcing service initiates a smooth transition of the principal role to the mirror database. 强制服务将把主体角色平滑转换给镜像数据库。
- The former principal takes on the mirror role, and the former principal database becomes the mirror database. 以前的主体角色成为镜像角色,以前的主体数据库成为镜像数据库。
- Whether the mirror database ever completely catches up to the principal database depends on the operating mode of the session. 镜像数据库是否完全与主体数据库保持同步取决于会话的运行模式。
- In the highest availability mode, the partner server instances synchronize the mirror database with the principal database. 在最高的可用性模式下,合作伙伴服务器实例将镜像数据库与主体数据库同步。
- In this mode, the mirror database might lag somewhat behind the principal database, and manual failover is no longer possible. 在此模式下,镜像数据库可能稍微滞后于主体数据库,并且不可能再进行手动故障转移。
- Make sure that the system where you plan to create the mirror database possesses a disk drive with sufficient space to hold the database. 确保计划创建镜像数据库所在的系统的磁盘驱动器空间足以存储数据库。
- If possible, the path (including the drive letter) of the mirror database should be identical to the path of the principal database. 如有可能,镜像数据库的路径(包括驱动器号)应该与主体数据库的路径相同。
- Under high-safety mode, when a session begins, the mirror server synchronizes the mirror database with the principal database as quickly as possible. 在这两种模式下,当会话开始时,镜像服务器将使镜像数据库尽快与主体数据库同步。
- After modifying the recovery model of the database from SIMPLE to FULL, create a full backup, which can be used to create the mirror database. 将数据库的恢复模式从SIMPLE更改为FULL之后,创建一个完整备份,以用于创建镜像数据库。
- Also, we recommend that, if possible, the path (including the drive letter) of the mirror database be identical to the path of the principal database. 另外,我们建议,如有可能,镜像数据库的路径(包括驱动器号)应该与主体数据库的路径相同。
- To achieve synchronous operation for a session, the mirror server must synchronize the mirror database with the principal database. 若要实现会话的同步操作,镜像服务器必须将镜像数据库与主体数据库同步。
- Redoing is accomplished by sending every active transaction log record to the mirror server, which applies log records to the mirror database, in sequence, as quickly as possible. 重做通过将每个活动事务日志记录发送到镜像服务器来完成,这会尽快将日志记录按顺序应用到镜像数据库中。
- To enable automatic decryption of the database master key of a mirror database, you must provide the password used to encrypt the master key to the mirror server instance. 若要启用镜像数据库的主密钥自动解密功能,必须向镜像服务器实例提供用于加密主密钥的密码。
- The principal server instance is sending log records to the mirror server instance, which is applying the changes to the mirror database to roll it forward. 主体服务器实例正在向镜像服务器实例发送日志记录,这会对镜像数据库应用更改,使其前滚。
- Ensure that the mirror database is back up and online, and then reconnect the mirror server instance and allow the mirror database to finish synchronizing. 确保镜像数据库已备份并且在线,然后重新连接镜像数据库实例并使镜像数据库完成同步。
- The former mirror database moves online as the new principal database, and recovery cleans up all uncommitted transactions by rolling them back as quickly as possible. 前一个镜像数据库作为新的在线主体数据库,恢复通过尽快回滚未提交的事务将这些事务全部清除。
