How To Fix CNV_DMC_HC095 - System in maintenance; master job is NOT starting

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DMC_HC -

• Message number: 095

• Message text: System in maintenance; master job is NOT starting

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 CNV_DMC_HC095 - System in maintenance; master job is NOT starting ?

  The SAP error message CNV_DMC_HC095 indicates that the system is currently in maintenance mode, which prevents the master job from starting. This error typically occurs during data migration or conversion processes when the system is not fully operational.
  Cause:
  
  System Maintenance Mode: The system is set to maintenance mode, which is often done during upgrades, patches, or other maintenance activities.
  Configuration Settings: Certain configuration settings may have been applied that restrict job execution during maintenance.
  Locks or Restrictions: There may be locks or restrictions in place that prevent the execution of jobs.
  
  Solution:
  
  
  Exit Maintenance Mode: If you have the necessary permissions, you can exit maintenance mode. This usually involves:
  
  Logging into the SAP system with appropriate credentials.
  Navigating to the transaction code for system maintenance (e.g., SM37 for job monitoring).
  Checking the system status and changing it back to operational mode if applicable.
  
  
  
  Check Job Scheduling: Ensure that the job scheduling settings allow for the execution of the master job. You may need to adjust the job scheduling parameters.
  
  
  Consult with Basis Team: If you do not have the necessary permissions or if you are unsure about making changes, consult with your SAP Basis team. They can provide insights into the system status and assist in resolving the issue.
  
  
  Review Logs: Check the system logs for any additional error messages or warnings that may provide more context about why the system is in maintenance mode.
  
  
  Documentation: Refer to SAP documentation or notes related to the specific migration or conversion process you are working on. There may be specific instructions or prerequisites that need to be fulfilled.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM37 (Job Monitoring), SM21 (System Log), and ST22 (Dump Analysis) for troubleshooting.
  SAP Notes: Search for SAP Notes related to the CNV_DMC_HC095 error for any specific patches or updates that may address the issue.
  System Status: Regularly check the system status and maintenance schedules to avoid conflicts with job executions.
  
  If the issue persists after following these steps, it may be necessary to escalate the matter to SAP support for further assistance.