Tivoli Common Reporting is a Websphere based reporting product that relies on BIRT report engine. TCR provides necessary authentication & authorization features and web based front end for BIRT reports that can be shared by many users. The product can also be integrated with Active Directory/LDAP.
Many times, while using the product, you might want to display/verify the current user name in your BIRT reports. The following article describes how to acheive this functionality in BIRT.
http://blog.gulfsoft.com/2011/03/passing-tcr-userid-in-birt-reports.html
Hope you find it useful.
Thanks,
-venkat