the link was for solaris
the aix link is protected
Solution
To uninstall DB2 NSE 8.1 on AIX, please use System Management Interface Tool ( SMIT) and navigate through the menu in following order:
1. Software Installation and Maintenance
2. Software Maintenance and Utilities
3. Removed Installed Software
4. Here you will be required to input the component to be removed in 'SOFTWARE name' field. The component name for DB2 NSE 8.1 is 'db2_08_01.db2nse'.