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You can configure an instance of SQL Server to use either static or dynamic ports. The following documentation should also be reviewed: Verifying the Configuration of SQL Server Ports and SQL Server Locks
To configure an instance of SQL Server to use a static port:
The SQL Server Network Utility dialog box appears.
In the Instance(s) on this server list, select your instance of SQL Server.
If the TCP/IP protocol is disabled, enable it by clicking TCP/IP in the Disabled Protocols list box, and then clicking Enable. |
If TCP/IP protocol is disabled, enable it by clicking TCP/IP in the Disabled Protocols list box, and then clicking Enable.
The static port that you specify must not be the same as the dynamic port on which your instance of SQL Server is currently listening. For example, if your instance of SQL Server is currently listening on dynamic TCP/IP port 1400, type 1500 for the new static port.
The static port that you specify must not be the same as the dynamic port on which your instance of SQL Server is currently listening. For example, if your instance of SQL Server is currently listening on dynamic TCP/IP port 1400, type 1500 for the new static port. |
To configure your instance of SQL Server to use a dynamic port:
If the TCP/IP protocol is disabled, enable it by clicking TCP/IP in the Disabled Protocols list box, and then clicking Enable. |
If TCP/IP protocol is disabled, enable it by clicking TCP/IP in the Disabled Protocols list box, and then clicking Enable.
If you have a clustered instance of SQL Server, and you follow the specified steps on a cluster node, you may notice that the TCPDynamicPorts and TCPPort registry values on other cluster nodes retain the old values. When you move the SQL Server group to the corresponding cluster node, and then bring SQL Server online on the cluster node, the registry values on the cluster nodes will reflect the updated values.