The machine on which you install or upgrade to vCenter Server must have a computer name that is 15 characters or fewer. If your database is located on the same machine on which vCenter Server will be installed, and you have recently changed the name of this machine to comply with the name-length requirement, make sure the vCenter Server DSN is configured to communicate with the new name of the machine.

Changing the vCenter Server computer name impacts database communication if the database server is on the same computer with vCenter Server. If you changed the machine name, you can verify that communication remains intact.

The name change has no effect on communication with remote databases. You can skip this procedure if your database is remote.


The name-length limitation applies to the vCenter Server system. The data source name (DSN) and remote database systems can have names with more than 15 characters.

Check with your database administrator or the database vendor to make sure all components of the database are working after you rename the server.

Make sure the database server is running.

Make sure that the vCenter Server computer name is updated in the domain name service (DNS).

Ping the computer name to test this connection. For example, if the computer name is, run the following command in the Windows command prompt:


If you can ping the computer name, the name is updated in DNS.


Update the data source information, as needed.


Verify the data source connectivity.