Cannot open Packages database during MQ installation

Continuing from the journey of previous installation on WebSphere MQ. This time, IBM has offered WebSphere MQ free of charge, the link of the site is here. As of this writing, I'm getting the MQv8 for Linux. No more waiting! This is a damn real great news for a poor guy like ME!

While I was about to install MQ after the step ./crtmqpkg suffix, something "abnormal" was blocking my way.

kokhoe@KOKHOE:/var/tmp/mq_rpms/LKH/x86_64$ sudo rpm -ivh --force-debian MQSeriesRuntime_LKH-8.0.0-2.x86_64.rpm 
error: db5 error(-30969) from dbenv->open: BDB0091 DB_VERSION_MISMATCH: Database environment version mismatch
error: cannot open Packages index using db5 -  (-30969)
error: cannot open Packages database in /home/kokhoe/.rpmdb
error: db5 error(-30969) from dbenv->open: BDB0091 DB_VERSION_MISMATCH: Database environment version mismatch
error: cannot open Packages database in /home/kokhoe/.rpmdb

I think this error doesn't belong to MQ specific because it happened on another package installer too. The clue I found was there is a hidden folder, .rpmdb is having some conflict since previous installation. By just removing that folder will make the rpm program smiling.