Is secondary database read-write in SQL Server 2012 Always on configuration?


In Always On HA configuration for SQL 2012 database, is the secondary database in read-write mode or read-only?

Appreciate your inputs.

Aravind G
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DBAduck - Ben MillerConnect With a Mentor Principal ConsultantCommented:
Well actually by default it is not readable, it is a state of redoing the logs that get applied from the primary.

You can make it a readable secondary if you have license for the 2nd server, but it will not ever be read/write while the primary is the primary.
Aneesh RetnakaranConnect With a Mentor Database AdministratorCommented:
Its read only
sachinpatil10dConnect With a Mentor Commented:
availability group
A container for a set of databases, availability databases, that fail over together.
availability database
A database that belongs to an availability group. For each availability database, the availability group maintains a single read-write copy (the primary database) and one to eight read-only copies (secondary databases).  
primary database
The read-write copy of an availability database.
secondary database
A read-only copy of an availability database.
availability replica
An instantiation of an availability group that is hosted by a specific instance of SQL Server and maintains a local copy of each availability database that belongs to the availability group. Two types of availability replicas exist: a single primary replica and one to eight secondary replicas.  
primary replica
The availability replica that makes the primary databases available for read-write connections from clients and, also, sends transaction log records for each primary database to every secondary replica.
secondary replica
An availability replica that maintains a secondary copy of each availability database, and serves as a potential failover targets for the availability group. Optionally, a secondary replica can support read-only access to secondary databases can support creating backups on secondary databases.
availability group listener
A server name to which clients can connect in order to access a database in a primary or secondary replica of an AlwaysOn availability group. Availability group listeners direct incoming connections to the primary replica or to a read-only secondary replica.  
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