--- In firebird-support@yahoogroups.com, Nick Upson wrote:

>
> ISC_kill: process 17382 couldn't deliver signal 16 to process 17918:
> permission denied
>
>
> running 2.1.4 CS on Centos, anyone understand it?

You have few engine processes running by different users. For example, regular working processes (by user "firebird") and isql or gbak using embedded engine (by interactive user).

Regards,
Vlad