Hello All,
If you are needing to remove the DB2 v9 Runtime Clients on Windows, you can still do so despite the absence of the db2unins. The following is a technote on how to achieve this using the MSI command:
1.) msiexec.exe /x {product code} SILENT_MODE="ON" /qn
Runtime client product codes by version are:
V9.7 - {D69ADB0B-B88E-4339-85BD-6B7AD104F038}
V9.5 - {5AEE236C-0100-464B-BD2E-883AA70A5D73}
V9.1 - {4A54CF0D-EE0D-48CB-8C96-69C720FD16C6}
Example silent install command for DB2 v9.7 runtime client:msiexec.exe /x {D69ADB0B-B88E-4339-85BD-6B7AD104F038} SILENT_MODE="ON" /qn
For more information on this topic please go to the following tech doc:
Please note IBM DB2 doesn't support the MSI command as that is apart of Microsoft.
Tags: 
runtime
removal
db2
client