It should be too many connections already opened, so
they reached the maximum configured. A 1601 error
must appear in errorlog for each subsequent attempt
to open a new connection.

I see no reason to think there may be a hidden problem
behind this. I've seen 1601 errors many times and the
reason was always a lack of free connections.

Regards,
Mariano Corral

ofercohen@allot.com (ofer) wrote:
> 00:2003/08/14 07:08:03.49 server Error: 1601, Severity: 21, State: 3
> 00:2003/08/14 07:08:03.53 server There are not enough 'user
> connections' available to start a new process. Retry when there are
> fewer active users, or ask your System Administrator to reconfigure
> SQL Server with more user connections.
> 00:2003/08/14 07:08:06.57 server Error: 1601, Severity: 21, State: 3