How To Fix MC600 - System error in lock management

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 600

• Message text: System error in lock management

What causes this issue?

An internal error was found in the SAP lock management system when
attempting to lock an object by calling an ENQUEUE function module.

System Response

The SAP system cannot enter the required lock correctly into the lock
table managed in the enqueue server and the ENQUEUE function module
therefore triggers an exception. If the application cannot process this
exception, the active transaction is canceled automatically.

How to fix this error?

The most frequent reason for the error message is that you can no longer
access the enqueue server. This may be caused by the enqueue server not
running.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC600 - System error in lock management ?

  The SAP error message MC600, which indicates a "System error in lock management," typically arises when there are issues related to the locking mechanism in the SAP system. This can occur due to various reasons, including:
  Causes:
  
  Database Lock Issues: The database may have encountered a problem with locks, which can happen if there are deadlocks or if the lock table is full.
  System Resource Limitations: Insufficient memory or other system resources can lead to failures in managing locks.
  Corrupted Lock Entries: Sometimes, lock entries can become corrupted, leading to errors when the system tries to access or release them.
  Network Issues: If there are network problems, it may affect the communication between the application server and the database, leading to lock management errors.
  Configuration Issues: Incorrect configuration settings in the SAP system can also lead to lock management problems.
  
  Solutions:
  
  Check Lock Entries: Use transaction code SM12 to check for existing lock entries. You can delete any unnecessary or stale locks that may be causing the issue.
  Monitor System Resources: Ensure that the system has adequate resources (CPU, memory, etc.) and that there are no performance bottlenecks.
  Restart the Application Server: Sometimes, restarting the application server can help clear temporary issues related to lock management.
  Database Administration: Work with your database administrator to check for any database-level issues, such as deadlocks or lock table size limits.
  Review System Logs: Check the system logs (transaction SM21) for any related error messages that could provide more context on the issue.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to the MC600 error. There may be patches or updates available that resolve known issues.
  Consult SAP Support: If the issue persists, consider reaching out to SAP Support for further assistance, especially if it appears to be a bug or a more complex issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (Lock Entries), SM21 (System Log), and ST22 (Dump Analysis) for troubleshooting.
  SAP Basis Team: Collaborate with your SAP Basis team, as they can provide insights into system performance and configuration.
  Documentation: Review SAP documentation and community forums for additional insights and user experiences related to the MC600 error.
  
  By following these steps, you should be able to diagnose and resolve the MC600 error effectively.