Add swap file

Chances are, if you are installing Oracle on Linux, you would have to add a swap file.

Here's a link how it's done.

And here's what i did:
[root@unica82 app]# id
uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel)
[root@unica82 app]# pwd
/app
[root@unica82 app]# dd if=/dev/zero of=/app/swapfile1 bs=1024 count=1048576
1048576+0 records in
1048576+0 records out
1073741824 bytes (1.1 GB) copied, 31.4374 seconds, 34.2 MB/s
[root@unica82 app]# mkswap /app/swapfile1
Setting up swapspace version 1, size = 1073737 kB
[root@unica82 app]# swapon /app/swapfile1

In /etc/fstab: /app/swapfile1 swap swap defaults 0 0

To check free -m

Blogs about CentOS

Here's a good site about CentOS adminstration.

Changing hostnames for Cognos server

If the hostname or IP address is changed, you might run into problems when saving the configuration file.

For example, you may get the following errors:
CAM-CRP-1315 Current configuration points to a different Trust Domain than originally configured.

The way to do it is to try deleting the folders under configuration for csk then in configuration do another save. Some have mentioned that you need to delete the files under encryptkeypair and signkeypair but it didn't work for me - I had to keep them.