Quick Setup a SQL 2012 AlwaysOn Availability Groups以下範例所有Instance的SQL Server啟動帳戶都同一個網域帳戶(domain user account),如果您的SQL啟動帳戶是本機帳戶或虛擬帳戶Virtual Account(本機受管理的服務帳戶Managed Local Accounts),請參考這篇 Setup SQL Server 2012 AlwaysOn Availability Grou...
ALTERAVAILABILITYGROUP[UbuntuAG]JOINWITH(CLUSTER_TYPE=EXTERNAL);ALTERAVAILABILITYGROUP[UbuntuAG]GRANTCREATEANYDATABASE; 下图为添加完节点后的状态: j) 测试:创建一个DB并加入到刚刚创建的AG中: CREATEDATABASE[db1];ALTERDATABASE[db1]SETRECOVERYFULL;BACKUPDATABASE[db1]TODISK=N'var/opt/mssql/data/db1....
--选择AlwaysOn HA tab,选择Enable AlwaysOn AG,此时会重启SQL Server服务,ok --重启SQL Server服务 D. 创建和配置SQL Server 2012 AlwaysOn AG AG可以在已有DB上创建。 --开启SQL Server Management Studio,连接到实例 --展开AlwaysOn HA,右键AG,选择New Availability Group Wizard... --输入AG名称 --在Sel...
CREATEAVAILABILITYGROUP[UbuntuAG]WITH(DB_FAILOVER=ON, CLUSTER_TYPE=EXTERNAL)FORREPLICAONN'**<node1>**'WITH( ENDPOINT_URL=N'tcp://**<node1>**:**<5022>**', AVAILABILITY_MODE=SYNCHRONOUS_COMMIT, FAILOVER_MODE=EXTERNAL, SEEDING_MODE=AUTOMATIC ), N'**<node2>**'WITH( ENDPOINT_URL=N'tcp...
Always On availability groups maximizes the availability of a set of user databases for an enterprise. An availability group supports a failover environment for a discrete set of user databases, known as availability databases, that fail over together. An availability group supports a set of read-...
SQL Server AlwaysON从入门到进阶(6)——分析和部署AlwaysOn Availability Group,前言:本节是整个系列的重点文章,到现在,读者应该已经对整个高可用架构有一定的了解,知道独立的SQLServer实例和基于群集的SQLServerFCI的区别。上一节已经介绍了如何安装SQLServerFailo
Deploying Always On availability groups for HA on Windows requires a Windows Server Failover Cluster (WSFC). Each availability replica of a given availability group must reside on a different node of the same WSFC. The only exception is that while being migrated to ...
In a previoustip, you have learned to setup AlwaysOn in SQL Server 2012. After a successful setup and everything seems to be in the right place, you are preparing to test your AlwaysOn to failover to your secondary replica for the first time. The first test is successful, ...
唯一支持的 Always On Transact-SQL 语句是DROP AVAILABILITY GROUP。 不支持 CREATE AVAILABILITY GROUP、ALTER AVAILABILITY GROUP 和 ALTER DATABASE 的 SET HADR 选项。 SQL Server 元数据和 WSFC 中的 Always On 可用性组配置数据不受禁用 Always On 可用性组的影响。
必须在每个 Always On 可用性组 实例上启用 SQL Server功能。 如果未启用 Always On 可用性组功能,尝试在 SQL Server 上创建可用性组时会收到此错误消息。 The Always On Availability Groups feature must be enabled for server instance 'SQL1VM' before you can create an availability group on this instanc...