Exchanging the MES DB online - hazard or realistic task?
Infineon is using a home-grown MES, developed together with Systema over 25 years. When some technological updates have been finished, it also will be the MES for each Infineon frontend fab. One important part of these technological changes is the replacement of the database Adabas by MSSQL.
The presentation outlines the way from the Adabas-based MES BasicCellController (BCC) to an MSSQL based system without interrupting the fabs producing wafers. We describe the background and reasons for our selected migration method and how we realized it for the most challenging part: switching the WIP data.