How To Connect SSMS to ALWAYSON Read-Only Secondary Database

The databases in PRIMARY availability group can be used for read-write access. The databases in the SECONDARY availability group can be used just for read-only access.

An attempt to connect to a SECONDARY availability group database with a normal connection, which is read-write by default, shows the following error message –

Msg 978, Level 14, State 1, Line 1

The target database ('AGDemoDB') is in an
availability group and is currently accessible
for connections when the application intent is
set to read only. For more information about
application intent, see SQL Server Books Online.

To resolve the issue, the connection string needs to have the Application Intent = ReadOnly parameter. How do you pass parameters in a SSMS connection?

SSMS has many options that are not too obvious. One of them is to provide additional connection parameter options. All that is needed to resolve the above error is to use the Additional Connection Parameters screen in the connection dialog and put the parameter there.

AG_ReadOnlyIntent01

The keyword should not have any spaces.

AG_ReadOnlyIntent02

Further reading:

The AlwaysOn Professional MSDN blog has more examples of connection strings for various applications.

You may also like to review the Application Intent Filtering feature of AlwaysOn at this and this link.

2 thoughts on “How To Connect SSMS to ALWAYSON Read-Only Secondary Database

  1. VickyWinner April 1, 2016 / 11:52 am

    SQLCMD with -K READONLY works fine but when I mention ApplicationIntent=ReadOnly in SSMS, it connects to primary and not secondary. Any suggestions?

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