Hi All,
    I need some information on Cognos updagradation from one version to another. from 8.4 to 10.X
          I want step by step procedure used for upgradation.
         What issues we will be facing while doing upgradation 
       Is there any specific tool used for doing upgradation( What is  Lifecycle manager)
			
			
			
				Hi,
A good place to start is Cognos Upgrade Central:
http://www-01.ibm.com/software/analytics/cognos/customercenter/upgrade.html
Follow the link near the bottom for "Upgrading to IBM Cognos Business Intelligence"
Cheers!
MF.