Re: Réf. : Linux and DB2
From: Markus (updates4004_at_vr-web.de)
Date: Tue, 05 Apr 2005 08:15:21 +0200 To: firstname.lastname@example.org
Sorry, up to know I haven't known ulimit -a
here are all values:
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
file size (blocks, -f) unlimited
max locked memory (kbytes, -l) unlimited
max memory size (kbytes, -m) unlimited
open files (-n) 4096
pipe size (512 bytes, -p) 8
stack size (kbytes, -s) unlimited
cpu time (seconds, -t) unlimited
max user processes (-u) 7168
virtual memory (kbytes, -v) unlimited
I red about a maximum connections problem at mysql (
http://dev.mysql.com/doc/mysql/en/linux-post-install.html ) .
Any Ideas, if there could bei similarities between the mysql problem and
the DB2 Connect problem??
Sebastien Berube schrieb:
> Have you checked the ulimits for the user that's actually running the
> application that connects? You might just be running this application as
> root and running out of file descriptors...
> Sébastien Bérubé
> (514) 964-1828
> "With sufficient thrust, pigs fly just fine."
> <updates4004@vr-w Pour :
> eb.de> cc
> Objet : Linux and
> Hello all!
> Does anybody use DB2Connect on United Linux 1.0 We have the following
> The DB2Connect Software enables access from DB2 Clients (e.g. for
> connecting Application Servers to Databases) to
> to DB2 Databases on Z/oS Systems. You can say that DB2Connect works as a
> At the moment we can't open more then 1100 parallel connections per
> DB2Connect installation. But doing the same on AIX 4000 - 5000
> connections are possible at the same time.
> At the moment, suing United Linux 1.0 reach 1100 Connections then the
> whole machine hangs and must be rebooted. We don't achieve the CPU and
> RAM limits.
> Are there e.g. any kernel parameters that limit the number of parallel
> calls to a Server ?? We are using kernel 2.4.21!
> First of all, we get a sempahore error, but after changing the values in
> sysctl.conf, the were no further errors.
> Is it possible, that Linux can't handle more then 1000 parallel
> connections? I don't hope so.
> Thanks for answering!