What is shadow system in SAP BC-UPG - Upgrade - General?

SAP Term: shadow system

• Component: BC-UPG

• Component Name: Upgrade - General

• Description: Instance of the target release that uses the shadow tables The shadow system is an SAP NetWeaver Application Server system or an SAP Basis or SAP Web Application Server system in older target releases with restricted operation. It contains the full Repository of the target release, and the ABAP Dictionary source code determined by the RDDIT006 phase customer objects, repaired objects, generated objects. It is used in the upgrade for the modification adjustment of the ABAP Dictionary objects and for the activation of objects.

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• Key Concepts: 
  A shadow system is a copy of a production system in SAP. It is used to test and evaluate changes before they are implemented in the production system. The shadow system is a replica of the production system, including all the data and configuration settings. It is used to test new features, upgrades, and patches before they are applied to the production system. 
  
  How to use it: 
  The shadow system can be used to test changes before they are implemented in the production system. This helps ensure that any changes made will not cause any disruption or errors in the production system. The shadow system can also be used to evaluate the performance of new features or upgrades before they are applied to the production system. 
  
  Tips & Tricks: 
  When using a shadow system, it is important to keep it up-to-date with the production system. This ensures that any changes made in the production system are also reflected in the shadow system. It is also important to regularly back up the data in the shadow system, as this will help ensure that any changes made can be easily reverted if necessary. 
  
  Related Information: 
  For more information on shadow systems, please refer to SAP's documentation on BC-UPG Upgrade - General (https://help.sap.com/viewer/product/BC-UPG/). Additionally, there are many online resources available that provide more detailed information on how to use and maintain a shadow system.