Too many open files with Tomcat-3.2.1 under Solaris

[Zsolt Koppany <zk...@intland.com>]

Hi,

I just want to port our tomcat application to Solaris-2.7 and after a
short time I get the error message "Too many open files" from
java.net.SocketException.

The same applications does not have the problem under Linux.

I'm pretty sure that not our application causes the problem.

I use j2sdk1_3_0_02 under Solaris.

Any ideas?


-- 
Zsolt Koppany
Intland GmbH www.intland.com
Schulze-Delitzsch-Strasse 16
D-70565 Stuttgart
Tel: +49-711-7871080 Fax: +49-711-7871017

Re: Too many open files with Tomcat-3.2.1 under Solaris

[Ben Flaumenhaft <be...@sidelight.com>]

Hi Zsolt,

Most UNIX systems need one file descriptor per open socket. That error
message almost always means you don't have enough file descriptors. In
Linux, at least the last time I checked, you need to recompile the kernel to
change the number of file descriptors allocated by the system. Under
Solaris, you can change it in /etc/system.

See:

http://www.rational.com/technotes/clearcase_html/ClearCase_html/technote_344
.html

I'd recommend bumping it to 1024 and see if your problem goes away.

Hope that helps.

Regards,
Ben Flaumenhaft
Principal, Sidelight Consulting
http://www.sidelight.com

----- Original Message -----
From: "Zsolt Koppany" <zk...@intland.com>
To: <to...@jakarta.apache.org>
Sent: Thursday, March 01, 2001 6:59 AM
Subject: Too many open files with Tomcat-3.2.1 under Solaris


> Hi,
>
> I just want to port our tomcat application to Solaris-2.7 and after a
> short time I get the error message "Too many open files" from
> java.net.SocketException.
>
> The same applications does not have the problem under Linux.
>
> I'm pretty sure that not our application causes the problem.
>
> I use j2sdk1_3_0_02 under Solaris.
>
> Any ideas?
>
>
> --
> Zsolt Koppany
> Intland GmbH www.intland.com
> Schulze-Delitzsch-Strasse 16
> D-70565 Stuttgart
> Tel: +49-711-7871080 Fax: +49-711-7871017
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: tomcat-user-unsubscribe@jakarta.apache.org
> For additional commands, email: tomcat-user-help@jakarta.apache.org
>

Re: Too many open files with Tomcat-3.2.1 under Solaris

[David Crooke <da...@convio.com>]

netstat is a useful tool for tracing this - I'll bet you'll see a whole
batch of connections stacking up on your internal port between Apache
and Tomcat

Are you doing a close() on the PrintWriters going out from the
appserver? If not, the JVM may be too slow at closing them behind you.

Zsolt Koppany wrote:

> Hi,
>
> I just want to port our tomcat application to Solaris-2.7 and after a
> short time I get the error message "Too many open files" from
> java.net.SocketException.
>
> The same applications does not have the problem under Linux.
>
> I'm pretty sure that not our application causes the problem.
>
> I use j2sdk1_3_0_02 under Solaris.
>
> Any ideas?
>
> --
> Zsolt Koppany
> Intland GmbH www.intland.com
> Schulze-Delitzsch-Strasse 16
> D-70565 Stuttgart
> Tel: +49-711-7871080 Fax: +49-711-7871017
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: tomcat-user-unsubscribe@jakarta.apache.org
> For additional commands, email: tomcat-user-help@jakarta.apache.org