How To Fix CNV_DMC_HC034 - Job &1 (ID: &2): Job has been waiting to start for more than 3 minutes

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DMC_HC -

• Message number: 034

• Message text: Job &1 (ID: &2): Job has been waiting to start for more than 3 minutes

What causes this issue?

SAP Landscape Transformation expects jobs to start within a short amount
of time after their scheduled execution date and time. In this case the
job was not able to start within 3 minutes of the scheduled time.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Jobs which do not start on time could indicate that there are
configuration problems with SAP Landscape Transformation Replication
Server. For example, you may have specified more jobs across all your
configurations than there are background jobs available in the system.
For more information, see the SAP Landscape Transformation Replication
Server Installation Guide under https://help.sap.com/sapslt.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_HC034 - Job &1 (ID: &2): Job has been waiting to start for more than 3 minutes ?

  The SAP error message CNV_DMC_HC034 indicates that a job has been waiting to start for more than 3 minutes. This typically occurs in the context of data migration or conversion processes, particularly when using the SAP Data Migration Cockpit (DMC) or similar tools.
  Cause:
  
  Resource Contention: The job may be waiting for system resources (CPU, memory, or I/O) that are currently being utilized by other processes.
  Job Scheduling Conflicts: There may be other jobs scheduled to run at the same time, causing a backlog.
  Database Locks: The job might be waiting for database locks to be released, which can happen if other transactions are holding locks on the required tables.
  Configuration Issues: There may be misconfigurations in the job settings or the environment that prevent it from starting.
  System Performance: Overall system performance issues can lead to delays in job execution.
  
  Solution:
  
  Check Job Status: Use transaction codes like SM37 to check the status of the job and see if there are any other jobs that are currently running or in a waiting state.
  Monitor System Resources: Use tools like ST02 (buffer management), ST04 (database performance), and SM66 (global work process overview) to monitor system performance and resource usage.
  Review Job Scheduling: Ensure that there are no scheduling conflicts. If necessary, reschedule jobs to avoid overlaps.
  Database Locks: Check for any locks using transaction SM12 and release them if they are no longer needed.
  Increase Job Priority: If the job is critical, consider increasing its priority or adjusting the job class to allow it to start sooner.
  Configuration Review: Review the job configuration settings to ensure they are correct and optimal for the environment.
  System Performance Tuning: If the system is consistently slow, consider performance tuning measures, such as optimizing database queries, increasing hardware resources, or adjusting system parameters.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review the official SAP documentation for the Data Migration Cockpit or the specific tool you are using for any known issues or best practices.
  Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed logs and system information.
  
  By following these steps, you should be able to identify the cause of the CNV_DMC_HC034 error and implement a solution to resolve it.