Hi Senthil,
The checksum error may sometimes happen if you are using differ versions (at least that's the way it works with Datical, which is built of liquibase).
You are correct that clearchecksum is a decent immediate solution but, it is more important to understand why this happens in the long run. For example as mentioned above, what version of Liquibase are you using? Is it the same version on all systems?
Thanks!
-Ronak