How To Fix CNV_DMC_HC059 - &1 - &2: Unknown error occurred when counting entries of logging table &3

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DMC_HC -

• Message number: 059

• Message text: &1 - &2: Unknown error occurred when counting entries of logging table &3

What causes this issue?

An error occurred when counting the entries in the logging table.

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?

In transaction LTRC, you can view the possible causes of the issue. On
the tabs <ZK>Table Overview</> and <ZK>Data Transfer Monitor</>, you can
choose the <ZK>View Errors</> pushbutton. On the tab <ZK>Application
Logs</>, you can also view the logs for the initial load and for the
replication process.
If this is a recurring error, please open an incident using component
HAN-DP-LTR. In the incident, specify all information about the mass
transfer ID and the table.

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_HC059 - &1 - &2: Unknown error occurred when counting entries of logging table &3 ?

  The SAP error message CNV_DMC_HC059 typically indicates that there was an unknown error when the system attempted to count entries in a logging table during a data migration or conversion process. This error is often associated with the Data Migration Cockpit (DMC) or other data conversion tools within SAP.
  Possible Causes:
  
  Database Issues: There may be issues with the database connection or the database itself, such as corruption or performance problems.
  Table Locking: The logging table might be locked by another process, preventing the counting operation from completing.
  Insufficient Authorizations: The user executing the operation may not have the necessary authorizations to access the logging table.
  Configuration Issues: There may be misconfigurations in the data migration settings or parameters.
  Data Volume: A very large volume of data in the logging table could lead to performance issues or timeouts.
  
  Solutions:
  
  Check Database Connection: Ensure that the database is up and running and that there are no connectivity issues.
  Review Table Locks: Use transaction codes like SM12 to check for locks on the logging table and resolve any conflicts.
  Verify Authorizations: Ensure that the user has the necessary permissions to access and manipulate the logging table.
  Check Configuration: Review the configuration settings for the data migration process to ensure they are correct.
  Monitor Performance: If the logging table contains a large amount of data, consider archiving old entries or optimizing the database to improve performance.
  Review Logs: Check the application logs (transaction SLG1) for more detailed error messages that could provide additional context about the issue.
  Restart the Process: Sometimes, simply restarting the data migration process can resolve transient issues.
  
  Related Information:
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM21 (System Log), SLG1 (Application Log), and ST22 (Dump Analysis) for further investigation.
  Documentation: Review the official SAP documentation for the Data Migration Cockpit or the specific tool you are using for data migration to ensure you are following best practices.
  
  If the issue persists after trying the above solutions, it may be necessary to contact SAP support for further assistance, providing them with detailed information about the error and the context in which it occurred.