1. I´m using SAP Net Weaver and ABAP OO.
https://en.wikipedia.org/wiki/SAP_NetWeaver
2. As the production manager I was using for my daily decisions Goldratt´s TOC and its tools like TP, DBR, OPT, etc. .
E.M. Goldratt still proves that common sense is the best tool ever…
https://en.wikipedia.org/wiki/Theory_of_constraints