witness server meaning in English

见证服务器

Specifies an instance of the database engine to act as the witness server for a database mirroring session
指定一个数据库引擎实例，作为数据库镜像会话的见证服务器。
Note , also , that the role of the database mirroring endpoint of a witness server instance must be set to either witness or all
另请注意，必须将见证服务器实例的数据库镜像端点的role设置为witness或all 。
To execute a set witness statement , the state of the endpoints of both the principal and witness server instances must be set to started
若要执行set witness语句，必须将主体服务器和见证服务器实例端点的state都设置为started 。
In the presence of a third server , the witness server , if the principal database becomes unavailable , the principal role can automatically fail over to the mirror database
在存在第三台服务器（证据）的情况下，如果主体数据库不可用，主体角色可以自动故障转移到镜像数据库。
In database mirroring , the server instance that monitors the status of the principal and mirror servers . by default , the witness server can initiate automatic failover if the principal server fails
一种打开时显示其他用户对其成员行所做的更新效果（但不显示插入或删除效果）的游标。