Is there a limit to the number of connections to an SQL server? If so, how many connections are permitted at one time?
The number of connections is a configuration option. You can see the current value by executing sp_configure and looking at the row that says “user connections.” To change the value, execute sp_configure ‘user connections’, new value and then execute RECONFIGURE.
You can also use the GUI interface to accomplish the same task. In Enterprise Manager right-click on the server in question and choose configure. Click on the configuration tab and scroll down until you find the line with the ‘user connections’. You can make your changes there.