How To Fix DD_DATABASEOBJ_CONS402 - Reason: in blue-green system, projection view of & is inconsistent.

SAP Error Message - Details

• Message type: E = Error

• Message class: DD_DATABASEOBJ_CONS -

• Message number: 402

• Message text: Reason: in blue-green system, projection view of & is inconsistent.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DD_DATABASEOBJ_CONS402 - Reason: in blue-green system, projection view of & is inconsistent. ?

  The SAP error message DD_DATABASEOBJ_CONS402 indicates that there is an inconsistency in the projection view of a database object in a blue-green deployment system. This type of error typically arises when there are discrepancies between the database schema and the application layer, particularly in environments where changes are made to the database structure or when switching between different versions of the application.
  Cause:
  
  Inconsistent Database Schema: The projection view of the database object may not match the expected structure due to changes made in one environment (e.g., blue) that have not been replicated in the other environment (e.g., green).
  Deployment Issues: If the deployment process did not complete successfully or if there were errors during the migration of database objects, this could lead to inconsistencies.
  Version Mismatch: If the application version running in the blue environment is different from that in the green environment, it may lead to discrepancies in the expected database schema.
  Manual Changes: Any manual changes made directly to the database that are not reflected in the application layer can also cause this inconsistency.
  
  Solution:
  
  Check Database Consistency: Use transaction codes like SE11 (Data Dictionary) or SE14 (Database Utility) to check the consistency of the database objects. You can also use the DBACOCKPIT transaction to analyze the database.
  Synchronize Environments: Ensure that both the blue and green environments have the same database schema. This may involve running migration scripts or adjusting the database structure to match the expected state.
  Recreate Projection Views: If the projection views are corrupted or inconsistent, you may need to recreate them. This can often be done through the Data Dictionary (SE11) by adjusting the view definition and activating it.
  Review Deployment Logs: Check the logs from the last deployment to identify any errors or warnings that may indicate why the inconsistency occurred.
  Consult SAP Notes: Look for relevant SAP Notes that may address this specific error or provide guidance on resolving inconsistencies in blue-green deployments.
  Testing: After making changes, thoroughly test the application in both environments to ensure that the issue is resolved and that there are no further inconsistencies.
  
  Related Information:
  
  Blue-Green Deployment: This is a strategy for application deployment that reduces downtime and risk by running two identical production environments, referred to as "blue" and "green." One environment is live while the other is idle, allowing for seamless transitions.
  SAP Data Dictionary: The Data Dictionary (SE11) is a central repository in SAP that contains definitions of all database objects, including tables, views, and indexes.
  Database Utility (SE14): This transaction is used for managing database objects and can help in checking and adjusting the consistency of database objects.
  
  If the problem persists after following these steps, it may be beneficial to consult with SAP support or a database administrator who can provide more in-depth analysis and assistance.