How To Fix J-329 - ZDM upgrade is running; only display is possible

SAP Error Message - Details

• Message type: E = Error

• Message class: J- -

• Message number: 329

• Message text: ZDM upgrade is running; only display is possible

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message J-329 - ZDM upgrade is running; only display is possible ?

  The SAP error message J-329 indicates that a Zero Downtime Maintenance (ZDM) upgrade is currently in progress, and as a result, only display operations are allowed. This is a protective measure to ensure the integrity of the upgrade process and to prevent any conflicting changes or operations that could disrupt the upgrade.
  Cause:
  The error occurs when a user attempts to perform actions that modify data or system configurations while a ZDM upgrade is ongoing. During this time, the system is in a state where it is transitioning to a new version, and only read operations (display) are permitted to maintain system stability.
  Solution:
  
  
  Wait for Completion: The simplest solution is to wait until the ZDM upgrade process is completed. Once the upgrade is finished, normal operations will resume, and you will be able to perform the actions that were previously restricted.
  
  
  Check Upgrade Status: If you have access to the system logs or monitoring tools, check the status of the ZDM upgrade. This can provide insights into how long the upgrade is expected to take and whether it is progressing as planned.
  
  
  Contact System Administrator: If the upgrade seems to be taking longer than expected or if you suspect there may be an issue, contact your SAP Basis team or system administrator. They can provide more detailed information about the upgrade process and any potential issues.
  
  
  Review Documentation: Refer to SAP's official documentation regarding Zero Downtime Maintenance and upgrades. This can provide additional context and best practices for managing upgrades.
  
  
  Related Information:
  
  Zero Downtime Maintenance (ZDM): This is a method used by SAP to upgrade systems without significant downtime, allowing for continuous availability of the system during the upgrade process.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues or provide guidance related to ZDM upgrades.
  Monitoring Tools: Utilize SAP monitoring tools (like SAP Solution Manager) to keep track of the upgrade process and system performance.
  
  In summary, the J-329 error is a temporary state during a ZDM upgrade, and the best course of action is to wait for the upgrade to complete or consult with your SAP Basis team for further assistance.