LVM Volume group extension fails

If it fails with a message about missing uuid, try


vgreduce --removemissing VolGroupName


This removes the mising volumes in the group and we can proceed with the volume group extension

Disabling security for Websphere Application Server

Quite a few times I've got my WAS installations having their security settings corrupted thereby denying me login into the admin console.
Here's how you disable security in such cases (of course you need to have root access to shell )

vim /opt/IBM/PE/AppServer/profiles/profile_name/config/cells/instance_name/security.xml

in the first line disable security

useLocalSecurityServer="false"
enabled="false"

Now login with any name, troubleshoot the login issues and switch it back.

ISA unable to access site

One of my friends couldn't access the birlasunlife.com website on IE 8 when passed through a proxy.
It was working on firefox though. Looks like its a malformed url as mentioned here
http://blogs.technet.com/yuridiogenes/archive/2008/10/09/error-64-from-the-field-to-the-classroom.aspx
good article in there.