Almost two and half years ago, I tried to explain my thought on oracle Dataguard with my colleagues and seniors, ultimately denied about the viability. Finally I just blogged….
But today I am really relishing with the new though that I am not entirely confused but have brilliant ideas. We achieved very low Effective Downtime of Business Application [EDBA ;)] when we upgraded SAP. The EDBA was about 4 hours instead of 18/20 hours standard as seen by SAP. Please note that they (SAP) are correct as actually they do not consider the scenario of using a standby application ( We were using Oracle Dataguard.)
So I thought to write a universal schematic about my thought which do not only applies for SAP but for any other business application running Oracle database in the backend.