How To Fix AG607 - Communication or system problem when locking (see system log)

SAP Error Message - Details

• Message type: E = Error

• Message class: AG - Nachrichten ATP-Server

• Message number: 607

• Message text: Communication or system problem when locking (see system log)

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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Smart SAP Assistant

• What is the cause and solution for SAP error message AG607 - Communication or system problem when locking (see system log) ?

  The SAP error message AG607 indicates a communication or system problem that occurred while attempting to lock a resource in the SAP system. This error typically arises in scenarios where there are issues with the system's ability to manage locks, which can be due to various reasons such as network issues, database problems, or configuration errors.
  Causes of AG607 Error
  
  
  Network Issues: Problems with the network connection between the application server and the database server can lead to communication failures.
  
  
  Database Lock Table Issues: If the database lock table is full or if there are issues with the database itself, it can prevent new locks from being created.
  
  
  System Resource Limitations: Insufficient system resources (like memory or CPU) can lead to performance issues, causing timeouts or failures in lock management.
  
  
  Configuration Errors: Incorrect configuration settings in the SAP system or the database can lead to locking issues.
  
  
  Deadlocks: Situations where two or more processes are waiting for each other to release locks can lead to communication problems.
  
  
  Transport Issues: If the system is undergoing a transport or upgrade, it may temporarily affect locking mechanisms.
  
  
  Solutions to AG607 Error
  
  
  Check System Logs: Review the system logs (transaction SM21) for more detailed error messages that can provide insights into the root cause of the issue.
  
  
  Monitor Lock Entries: Use transaction SM12 to check for existing lock entries. If the lock table is full, you may need to delete unnecessary locks.
  
  
  Database Health Check: Ensure that the database is functioning correctly. Check for any database errors or performance issues.
  
  
  Network Diagnostics: Verify the network connection between the application server and the database server. Look for any connectivity issues or latency.
  
  
  System Resource Monitoring: Monitor system resources (CPU, memory, etc.) to ensure that the system is not under heavy load. If necessary, optimize performance or scale resources.
  
  
  Configuration Review: Review the configuration settings for both the SAP system and the database to ensure they are set correctly.
  
  
  Restart Services: In some cases, restarting the affected services or the entire SAP system may resolve temporary issues.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  Related Information
  
  
  Transaction Codes: 
  
  SM21: System Log
  SM12: Display and Delete Locks
  SM37: Job Monitoring
  ST22: Dump Analysis
  
  
  
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.
  
  
  Documentation: Review SAP documentation related to locking mechanisms and troubleshooting communication issues for more in-depth guidance.
  
  
  By following these steps, you should be able to diagnose and resolve the AG607 error in your SAP system.