Wednesday, November 19, 2014

[OEL] Warniung: pci_mmcfg_init marking 256MB space uncacheable

Situation:
The following warning appears in the /var/log/messages file:
Warning: pci_mmcfg_init marking 256MB space uncacheable.
Solution:
Modify the grub.conf file with the kernel parameter "acpi_mcfg_max_pci_bus_num=on" and then reboot the server:

#hiddenmenu
title Enterprise Linux Enterprise Linux Server (2.6.32-100.24.1.el5)
root (hd0,0)
kernel /vmlinuz-2.6.32-100.24.1.el5 ro root=/dev/vg00/lv00 console=tty0 acpi_mcfg_max_pci_bus_num=on
initrd /initrd-2.6.32-100.24.1.el5.img

Tuesday, November 18, 2014

[OEL] Change Hostname

Here are the steps for chaging the server hostname:
1. With a text editor (like vi), open the file /etc/sysconfig/network.
2. Change the value of the entry HOSTNAME=.
3a. Restart the xinetd service:
service xinetd restart
3b. Reboot the machine:
init 6
4. Change any entries on the /etc/hosts file.

Problem solved!