Increasing number of allocated file handles
Koray Sonmez
ksonmez at oytek.com.tr
Wed Oct 4 13:51:20 UTC 2006
Hello,
This solution for if your system is redhat x86.
For Oracle application Server release 10.1.0.2 the kernel parameter settings can be changed explained in the following section;
Using any text editor, create or edit the /etc/sysctl.conf file and add or edit lines similar to the following:
Note:
Include lines only for the kernel parameter values that you want to change. For the semaphore parameters (kernel.sem), you must specify all four values. However, if any of the current values are larger than the recommended value, specify the larger value.
kernel.shmall = 2097152
kernel.shmmax = 2147483648
kernel.shmmni = 4096
# semaphores: semmsl, semmns, semopm, semmni
kernel.sem = 256 32000 100 142
fs.file-max = 131072
net.ipv4.ip_local_port_range = 10000 65000
kernel.msgmni = 2878
kernel.msgmax = 8192
kernel.msgmnb = 65535
By specifying the values in the /etc/sysctl.conf file, they persist when you restart the system.
Koray Sonmez
-----Original Message-----
From: redhat-list-bounces at redhat.com [mailto:redhat-list-bounces at redhat.com] On Behalf Of Dominique Demore
Sent: Tuesday, October 03, 2006 7:51 PM
To: redhat-list at redhat.com
Subject: Increasing number of allocated file handles
Hi Everyone,
On our Oracle Application server, we have noticed that we are running out of file handles. Once the number of used file
handles reaches 0, the application crashes/reset itself.
I have increased the number of file handles from 65536 to 104854, but I am still seeing the problem. Should the number
of allocated file handles be increase also, if so, where is the file to modify it.
(*note: the second column will hit 0 everyday at ~9:00 when everyone is logging into the system.)
------
[root at server fs]# cat /proc/sys/fs/file-nr
39937 7405 104854
[root at server fs]#
-------
Any thoughts/suggestions,
Thanks.
-- Dominique
-----
Dominique Démoré
Technical Services Coordinator
Rainbow District School Board
69 Young Street
Sudbury, Ontario
P3E 3G5
Tel: (705) 674-3171 x. 258
Fax: (705) 671-2442
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