Re: Number maxim of concurrent conexions

Posted in 2006

Adam Tauno Williams — Fri, 25 Aug 2006 08:34:24 -0400 — source: Usenet: comp.databases.informix

> the only place where IDS actually enforces number of connections > is via the NETTYPE parameter in onconfig file. Please see the > manual for more information on this (or past e-mails in this list ... :) > However there are other possible reason for a restriction: > - number of open files when soctcp connection protocol is used, > because for each socket connection a file descriptor is needed. > This usually is an OS parameter. On Linux you can see this value with "/sbin/sysctl fs.file-max", it is unlikely to be the issue on a 2.6.x kernel as the default is very high. Perhaps you can ulimits applied to the Informix user? > - SHM (segment) limitations when ipcshm protocol is used. > Each SHM connection needs some SHM in the "message segment(s)". > If running out of SHM it will impose a limit. > That's what currently comes to my mind. > The actual error and circumstances may reveal more insight. Same, like the above "/sbin/sysctl kernel.shmmax". But my guess is NETTYPE values need to be increased.