If Active Roles does not have sufficient rights to perform the operation on SQL Server, then the Active Roles console prompts you to supply an alternative account for that operation (see “Permissions for adding or removing a Subscriber” in the Active Roles Quick Start Guide).
Using this method, you can remove only Subscribers. The Publisher cannot be removed from its replication group when the group includes Subscribers.
After you remove all Subscribers, you can demote the Publisher: in the Configuration Databases container, right-click the Publisher and click Demote.
If Active Roles does not have sufficient rights to perform the Demote operation on SQL Server, then the Active Roles console prompts you to supply an alternative account for that operation (see “Permissions for creating or removing the Publisher” in the Active Roles Quick Start Guide).
To remove the Publisher from a replication group
Active Roles makes it possible to monitor the status of replication partners. Monitoring allows you to determine whether Active Roles replication is working efficiently and correctly. You can view the status of a replication partner via the Active Roles console:
To connect to the Administration Service, use the instructions provided earlier in this chapter (see Connecting to the Administration Service).
Once connected to the Administration Service, perform the following steps to open the Properties dialog box for a replication partner:
The Replication Status tab in the Properties dialog box provides information about the last replication action of the partner and indicates whether the action completed successfully, failed, or is in progress.
If there are any replication failures in Active Roles, the Active Roles console provides a visual indication of this issue by modifying the icon of the Server Configuration and Configuration Databases containers in the console tree. This allows you to detect a replication failure without examining individual databases.
You can improve the availability of the Active Roles Administration Service by using the AlwaysOn Availability Groups feature introduced in Microsoft SQL Server 2012. With the AlwaysOn Availability Groups feature, SQL Server provides a failover environment, known as an availability group, for a set of availability databases that fail over together from one SQL Server instance to another. You can add the Active Roles database to an availability group, and have the Administration Service automatically reconnect to the database when the availability group fails over to another SQL Server instance.
An availability group defines a set of availability replicas to host copies of each availability database. Each availability group has at least two availability replicas: the primary replica and a secondary replica. The primary replica hosts the read-write copy of each availability database held in the availability group; a secondary replica hosts a read-only copy of each availability database, and serves as a potential failover target for the availability group. During a failover, a secondary replica transitions to the primary role, becoming the new primary replica. The new primary replica brings its databases online as the primary databases for read-write access.
Adding the Active Roles database to an availability group helps ensure uninterrupted operation of the Active Roles Administration Service. If a server or software failure occurs on the SQL Server side, the availability group can instantly switch the database to a secondary replica, enabling the Administration Service to reconnect seamlessly to the database in the new location.
For detailed information about the AlwaysOn Availability Groups feature, see “AlwaysOn Availability Groups (SQL Server)” at http://go.microsoft.com/fwlink/p/?LinkId=245660.
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