How to configure a subscriber availability group for replication?
For transactional replication, use the following steps to configure and failover a subscriber availability group: Before creating the subscription, add the subscriber database to the appropriate Always On availability group. Add the subscriber’s availability group Listener as a linked server to all nodes of the availability group.
When to disable distribution agent in replication group?
When you create a pull subscription, with the subscription database in an Availability Group, after every failover, it is recommended to disable the distribution agent job on the old Primary replica and enable the job on the new primary replica.
Can a CDC database be added to an always on availability group?
The order in which CDC and Always On availability groups are configured is not important. CDC enabled databases can be added to Always On availability groups, and databases that are members of an Always On availability group can be enabled for CDC.
What happens when there are only two availability replicas?
When the publisher has only two availability replicas (one primary and one secondary) and a failover happens, the original primary replica remains down because the log reader does not move forward until all secondary databases are brought back online or until the failing secondary replicas are removed from the availability group.
What happens when an always on availability group fails?
When an Always On availability group containing a database that is a replication subscriber fails over, the replication subscription might fail. For transactional subscribers, the distribution agent will continue to replicate automatically if the subscription is using the name of the availability group listener of the subscriber.
How to create a transactional replication push subscription?
Using the script in the Creating a Transactional Replication Push Subscription section below, create the subscription using the name of the availability group listener of the subscriber.
How does SQL server replication support automatic failover?
SQL Server replication supports the automatic failover of the publisher and the automatic failover of transactional subscribers. Merge subscribers can be part of an availability group, however manual actions are required to configure the new subscriber after a failover.
Can a secondary database be a publisher in AlwaysOn?
The failover of a distributor on an availability database is not supported. 2) In an AlwaysOn availability group a secondary database cannot be a publisher. Re-publishing is not supported when replication is combined with AlwaysOn Availability Groups. Below is the environment we will be building at the end of this blog:
Which is not supported in SQL server replication?
SQL Server replication supports the automatic failover of the publisher and the automatic failover of transactional subscribers. The failover of a distributor on an availability database is not supported. Merge subscribers can be part of an availability group, however manual actions are required to configure the new susbcriber after a failover.