How To Fix SY312 - Error during connection setup (CMDEAL), return code = &

SAP Error Message - Details

• Message type: E = Error

• Message class: SY - ABAP/4 system messages

• Message number: 312

• Message text: Error during connection setup (CMDEAL), return code = &

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.

Unfortunately, there isn't any extra information in this error notice.

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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SY312 - Error during connection setup (CMDEAL), return code = & ?

  The SAP error message SY312 indicates that there was an error during the connection setup for the CMDEAL (Command Deal) process, and it provides a return code that can help diagnose the specific issue. Here’s a breakdown of the potential causes, solutions, and related information for this error:
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the database or application server.
  Configuration Errors: Incorrect configuration settings in the SAP system or in the database connection parameters can lead to this error.
  Database Issues: The database may be down, or there may be issues with the database instance that prevent connections from being established.
  Authorization Problems: The user or service account attempting to establish the connection may not have the necessary permissions.
  Resource Limitations: The server may be running out of resources (e.g., memory, connections) which can prevent new connections from being established.
  Return Code Specifics: The return code provided in the error message can give more specific information about the nature of the error.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection between the SAP system and the database or application server is stable and functioning correctly.
  Review Configuration Settings: Verify the configuration settings in the SAP system, including the database connection parameters (e.g., host, port, user credentials).
  Database Status: Check the status of the database to ensure it is up and running. Look for any error messages in the database logs.
  User Permissions: Confirm that the user or service account has the necessary permissions to connect to the database or application server.
  Monitor Resource Usage: Check the server for resource usage and ensure that it is not hitting any limits. If necessary, increase the resources or optimize the existing usage.
  Analyze Return Code: Investigate the specific return code provided in the error message. Each return code can indicate a different issue, so understanding it can help in troubleshooting.
  
  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.
  System Logs: Review the system logs (transaction SM21) and developer traces (transaction ST22) for any additional error messages or warnings that may provide more context.
  Transaction Codes: Use transaction codes like SM37 (Job Monitoring) to check if there are any background jobs that failed due to this error.
  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 issue persists after trying the above solutions, it may be necessary to escalate the problem to your SAP Basis team or SAP support for further assistance.