What is Zero Downtime Option of SUM in SAP BC-UPG - Upgrade - General?

SAP Term: Zero Downtime Option of SUM

• Component: BC-UPG

• Component Name: Upgrade - General

• Description: With the Zero Downtime Option ZDO of SUM, updates and upgrades of ABAP applications can be run without a technical downtime and with a minimized business downtime.

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• Key Concepts: 
  The Zero Downtime Option of SUM (Software Update Manager) is a tool used to upgrade SAP systems with minimal downtime. It allows for the system to be upgraded without any interruption to the user experience. This is done by running the upgrade in two separate steps: first, the system is prepared for the upgrade, and then the actual upgrade is performed. This ensures that the system remains available during the entire process. 
  
  How to use it: 
  To use the Zero Downtime Option of SUM, you must first prepare your system for the upgrade. This includes creating a backup of your system, ensuring that all necessary prerequisites are met, and setting up a test environment. Once these steps are completed, you can begin the actual upgrade process. This involves running SUM in two separate steps: first, the system is prepared for the upgrade, and then the actual upgrade is performed. 
  
  Tips & Tricks: 
  When using the Zero Downtime Option of SUM, it is important to ensure that all necessary prerequisites are met before beginning the upgrade process. Additionally, it is important to create a backup of your system before beginning the upgrade process in case something goes wrong during the process. Finally, it is important to set up a test environment so that you can test out any changes before they are applied to your production system. 
  
  Related Information: 
  For more information on using the Zero Downtime Option of SUM, please refer to SAP's official documentation on BC-UPG Upgrade - General (https://help.sap.com/viewer/product/BC-UPG-GEN/latest/en-US). Additionally, there are many online resources available that provide tips and tricks for using this tool effectively.