Hi,

>It happens on my computer after opening more than 44 connection to the
>DB with Classic Server. Probably it depends on the hardware resources

I'd say this is some OS limitation (configuration) on max number of
connections to some process (eg: for security reasons). You did not mention
what OS you're using. If Linux, look at xinetd configuration, you can raise
the max number of connections there


Regards,
Anderson Farias