Updates made by clients to the principal database are applied on the other copy of the database, known as the mirror database. Mirroring involves applying the transaction log from every insertion, update, or deletion made on the principal database onto the mirror database. Repli...
如需詳細資訊,請參閱 sys.database_mirroring_endpoints (Transact-SQL) 以及建立Windows 驗證的資料庫鏡像端點 (Transact-SQL) 或使用資料庫鏡像端點憑證 (Transact-SQL) (根據驗證格式而定)。 檢查通訊埠編號是否正確。 若要識別目前與伺服器執行個體的資料庫鏡像端點相關聯的通訊埠,請使...
若要标识当前与服务器实例的数据库镜像终结点关联的端口,请使用sys.database_mirroring_endpoints和sys.tcp_endpoints目录视图。 对于难以解释的数据库镜像设置问题,建议您检查每个服务器实例以确定它是否正在侦听相应的端口。 确保已启动端点 (STATE = STARTED)。 对于每个服务器实例,使用以下 Tr...
Database mirroring involves two copies of a single database that typically reside on different computers. At any given time, only one copy of the database is currently available to clients. This copy is known as the principal database. Updates made by clients to the principal database are ...
only one copy of the database is currently available to clients. This copy is known as the principal database. Updates made by clients to the principal database are applied on the other copy of the database, known as the mirror database. Mirroring involves applying the transaction log from...
如需詳細資訊,請參閱 sys.database_mirroring_endpoints (Transact-SQL) 以及建立Windows 驗證的資料庫鏡像端點 (Transact-SQL) 或使用資料庫鏡像端點憑證 (Transact-SQL) (根據驗證格式而定)。 檢查通訊埠編號是否正確。 若要識別目前與伺服器執行個體的資料庫鏡像端點相關聯的通訊埠,請...
For the system name of a server instance in a database mirroring configuration, you can use any name that unambiguously identifies the system. The server address can be a system name (if the systems are in the same domain), a fully qualified domain name, or an IP address (preferably, a...
For example, you could have a High Availability database mirroring configuration in-house, and log ship the principal server to a remote site for disaster recovery purposes. Figure 24 illustrates how such a configuration might take place. Figure 24: You may log ship a principal database to a...
Fabric mirroring enablement page for Azure Database for PostgreSQL flexible server in Azure Portal You can read additional details regarding the server enablement process and other critical configuration and monitoring options on a d...
RAID0+1 provides the performance advantage of striping, and the availability of mirroring. However, the cost is higher because you use twice as much disk space. Before determining the number of tablespaces and how to assign them to logical devices, determine the number of available logical device...