Windows and mainframe apps
I'm seing similar issues in reverse with an application hosted on Oracle / Unix where the devs are now really SQL Server/ Windows guys.
SQL Server is the direction of travel for the vendor and the code base is developed there then ported to Oracle. The Dev's don't seem to know the basic Oracle tuning tweaks and each release now comes with free performance issues. I don't know if the app performs better on the windows platform or they just keep throwing more CPU's ate it but we are having to spend a lot of time running Oracle performance tools to then explain to the vendor what they need to do.
We'll end up migrating to SQL: Server but Ironically we don't have the same level of expertise in SQL Server Performance management so we'll be stuck with whatever we get so if performance is dire and we need to throw additional cpu's at it our licencing SQL Server licencing costs will go up hugely. This could be the death knell of on-premises operation as going hosted would transfer that risk to the vendor.
Biting the hand that feeds IT
