Re: how to increase hardnofiles & softnofiles

1)


#
# This script extends limits for oracle user in the system
#
if grep oracle /etc/security/limits.conf
then
 echo "Limits configured already"
else
 cat >> /etc/security/limits.conf <<EOF
oracle soft nproc 2047
oracle hard nproc 16384
oracle soft nofile 1024
oracle hard nofile 65536
EOF
echo "/etc/security/limits.conf updated"
fi

if grep pam_limits /etc/pam.d/login 
then
 echo "/etc/pam.d/login already have limits module"
else
 echo "session required /lib/security/pam_limits.so" >> /etc/pam.d/login
 echo "/etc/pam.d/login updated"
fi

2)

Increase limit in the kernel (orarun do it itself)





----- Original Message ----- 
From: "De Witte Koen" <[email protected]>
To: <[email protected]>
Sent: Monday, January 07, 2008 7:10 AM
Subject: Re: [suse-oracle] how to increase hardnofiles & softnofiles


> in /etc/security/limits.conf you will find following kernel parameters
> ## added by orarun ##
> oracle  soft    nproc   2047
> oracle  hard    nproc   16384
> oracle  soft    nofile  1024
> oracle  hard    nofile  65536
> 
> 
> however, these limits are only set when pam is configured with
> pam_limits.so
> it needs to be done for
> /etc/pam.d/login
> 
> add line
> session     required       pam_limits.so   # added by orarun
> 
> 
> and if you want those limits in KDE or Gnome or X then you also need to
> add this line to /etc/pam.d/xdm
> otherwise the installation program will not give the correct results.
> 
> That's how I did it,
> 
> Regards,
> Koen De Witte
> 
> -----Original Message-----
> From: Cristian Veronesi <[email protected]>
> To: suse-oracle <[email protected]>
> Subject: [suse-oracle] how to increase hardnofiles & softnofiles
> Date: Mon, 07 Jan 2008 15:51:09 +0100
> 
> 
> A few months ago I set up a SLES9 SP3 system with Oracle Application
> Server 10.1.2. I remember I had to play with hardnofiles and softnofiles
> but I'm not able to remember what have I done exactly.
> 
> Now I'm trying to set up a second system hydentical to the first but I'm
> not able to pass the prerequisite checks, I always get these messages:
> 
> Checking for hardnofiles=65536; found hardnofiles=1024. Failed <<<<
> Checking for softnofiles=4096; found softnofiles=1024.  Failed <<<<
> 
> Indeed, on the first system I get these values with a non-root user:
> 
> $ ulimit -Sa | grep files
> open files                    (-n) 65536
> $ ulimit -Ha | grep files
> open files                    (-n) 65536
> 
> While on the second system I get these values:
> 
> $ ulimit -Sa | grep files
> open files                    (-n) 1024
> $ ulimit -Ha | grep files
> open files                    (-n) 1024
> 
> Unfortunately I'm not able to remember which changes I made to the first
> system in order to set these values for all users. Any suggestions?
> 
> Thank you. Kind regards, Cristian.
> 
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