How To Fix VMC_ADMIN020 - Shared class loader &1 could not be found

SAP Error Message - Details

• Message type: E = Error

• Message class: VMC_ADMIN - messages for VMC Administration and Monitoring

• Message number: 020

• Message text: Shared class loader &1 could not be found

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message VMC_ADMIN020 - Shared class loader &1 could not be found ?

  The SAP error message VMC_ADMIN020 indicates that a shared class loader could not be found. This error typically occurs in the context of SAP NetWeaver or SAP Java applications, particularly when dealing with Java EE components or when deploying applications that rely on shared libraries.
  Cause:
  
  Missing Class Loader: The specified shared class loader does not exist in the system. This could be due to a misconfiguration or an incomplete deployment.
  Incorrect Configuration: The configuration settings for the shared class loader may be incorrect, leading to the system being unable to locate it.
  Deployment Issues: If the application or component that relies on the shared class loader has not been deployed correctly, it may lead to this error.
  Version Mismatch: There may be a version mismatch between the application and the shared libraries it depends on.
  
  Solution:
  
  
  Check Class Loader Configuration:
  
  Go to the SAP NetWeaver Administrator (NWA) or the relevant management console.
  Navigate to the section where shared class loaders are configured.
  Verify that the class loader in question is correctly defined and exists.
  
  
  
  Deploy Missing Libraries:
  
  If the shared class loader is missing, ensure that the required libraries or components are deployed correctly.
  Check the deployment logs for any errors that might indicate why the class loader was not created.
  
  
  
  Review Application Configuration:
  
  Check the configuration files (like web.xml, MANIFEST.MF, etc.) of the application to ensure that they reference the correct shared class loader.
  Make sure that the application is configured to use the correct version of the shared libraries.
  
  
  
  Restart the Server:
  
  Sometimes, a simple restart of the application server can resolve issues related to class loaders.
  
  
  
  Check for Updates:
  
  Ensure that your SAP system is up to date with the latest patches and updates, as this can resolve known issues.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation or notes related to your specific version of SAP NetWeaver or the application you are working with for any additional troubleshooting steps.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or fixes related to the VMC_ADMIN020 error.
  Logs: Review the application server logs for more detailed error messages that can provide additional context.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance.