I have an Itanium based system running Red Hat Enterprise Linux AS release 4 (Nahant Update 1). The contents of /proc/sys/fs/file-max is: 1660043 The contents of /etc/security/limits.conf contain: oracle soft nproc 2047 oracle hard nproc 16384 oracle soft nofile 1024 oracle hard nofile 65536 oracle soft stack 1024 oracle hard stack 32768 The contents of /etc/pam.d/sshd : #%PAM-1.0 auth required pam_stack.so service=system-auth auth required pam_nologin.so account required pam_access.so account required pam_stack.so service=system-auth password required pam_stack.so service=system-auth session required pam_stack.so service=system-auth session required pam_limits.so session optional pam_console.so If I `sudo su - oracle' and then type: ulimit -n 65536 I get the following error returned: -bash: ulimit: open files: cannot modify limit: Operation not permitted On the other hand, if I am root, and then `su - oracle' and then type `ulimit -n 65536' the error is not generated, and the open files limit is set to 65536 as can be seen from the output from `ulimit -a'. I know the bash man page states the following for the -n switch for ulimit: -n The maximum number of open file descriptors (most systems do not allow this value to be set) Although this may be true, you can see that I was able to use the -n switch and change the open files from its default value of 1024 to the hard limit of 65536 set in the limits.conf file. I have googled and have seen a few posts dealing with this similar issue, but I have not seen a solution or explanation for the problem. Does anyone know what is causing this error and how to fix it? Thanks. Scott -- -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
