How to migrate from MySQL to PostgreSQL I need to know how to migrate my Drupal 6 database from MySQL to PostgreSQL. I also like to hear first hand experience tales about actual migrations. 

P.S. I found this drupal-mysql2pgsql.pl migration script which apparently does the job but I could not make use of it due to the fact that I dont' know how to make " passwordless account in both databases". There is also this guide (in Thai) which adds credentials to database connection lines in the script. But it did not help either, as I could not connect to Postgresql. I know very little about Postgresql and may have had some silly mistake. Any through explanation/tutorial on this would be much appreciated.
Module DBTNG Migrator will do it.