sql server alwayson standard edition

[Alwayson21]MODIFY REPLICA onN'HD21DB01' with(Primary_role (read_only_routing_list=(('HD21DB02','hd21db03','hd21db04'),'HD21DB01')));ALTERAvailabilityGROUP [Alwayson21]MODIFY REPLICA onN'HD21DB02' with(Primary_role (read_only_routing_list=(('HD21DB01','hd21db03','hd21db04'),'HD21DB02')));Note: You can find that read-only copies are evenly distributed over the first read-only pressure. Degree of importance (very important)the specific configuration can refer to the read and write separation co

/wKioL1X213KgYl1UAAORIEbwZLc640.jpg "title=" 4.png " alt= "Wkiol1x213kgyl1uaaoriebwzlc640.jpg"/>Note: Same as above operation completes the installation of the database function on SQL02, that is to say, the server SQL01 and SQL02 all need to complete the above SQL function installation. The SQL Service account must be guaranteed to be a domain account, and the c

does not need to configure this if the hosts that are not domain-aware are not configured to connect using the Listening IP and hostname!!!Connection test1.ReadOnly You can see that using the Applicationintent=readonly connection property is correctly connected to the read replica DB02. Applicationintent=readwrite. Overview From the above we can see that read-write separation is done through the Connection property applicationintent=readonly\readwrite whether the connection is connected to th

Event Cause: Recent research and development response, a database from 08 to 12 environment, the occasional write-operation delay problem; Event analysis: After excluding system resource contention, initial analysis may cause the synchronization mode AlwaysOn node to often appear the problem of session timeout waiting for submission due to network jitter. After troubleshooting, the extended event found that 35202 errors occurred irregularly, which

Tags: failover blank access configuration file Tar file environment recommendations CSDNI. Preparing to install a failover cluster Ensure that the nodes in the cluster are joined to the domain (in this case, 2 nodes)Ensure that domain accounts are added to the native Administrators group Second, install the failover cluster (all nodes need to install this feature) 1) Click Taskbar Server Manager to open the

/wKioL1X24xGAf6CzAAHCazDqLU4392.jpg "title=" 11.png "alt=" Wkiol1x24xgaf6czaahcazdqlu4392.jpg "/>8.12 Click "Close" after successful completion650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/73/2C/wKiom1X24OqyBAoOAAJTxCXDsJ0188.jpg "title=" 12.png "alt=" Wkiom1x24oqybaooaajtxcxdsj0188.jpg "/>8.13 Now you can see that the availability group has been created.650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/73/29/wKioL1X24y2C1_laAAJ9LoLEu48339.jpg "title=" 13.png "alt=" Wkiol1x

Original: SQL Server 2012 AlwaysOn--a problem caused by a hardware upgrade This is a case of last week: The problem caused by the upgrade of the existing hardware, but also triggered a more serious bug, is disastrous, but fortunately, in a chain of problems arise, there is no manual error (this is often the highest risk in dealing with the failure, affec

that may become the primary replica, where DB03 is not configured with a read-only routing list because it does not want to switch the primary replica to DB03, and the more primary replicas you have, the more things you need to do, including backups, jobs, and so on.Until this read-only route is configured, do not forget to create a login user on each AlwaysOn replica.Login Mode C # connection string server