Jørgen, thanks so much for your verification and clarification! Because our application causing the locking issues is highly concurrent, I assume we would be better off migrating to MySQL. I will look into MySQL a little deeper; I would like to have serializable isolation level for a few tables. At a first glance, MySQL should handle this as well: http://dev.mysql.com/doc/refman/5.1/en/innodb-transaction-isolation.html
Thanks again for your great help! :) Markus
