How To Fix M2122 - Internal error in lock management

SAP Error Message - Details

• Message type: E = Error

• Message class: M2 - LIS: Generating and updating info structures

• Message number: 122

• Message text: Internal error in lock management

What causes this issue?

An error occurred in lock management.

System Response

Info structure generation is currently not possible.

How to fix this error?

Try again later to generate the information structure.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M2122 - Internal error in lock management ?

  The SAP error message M2122, which indicates "Internal error in lock management," typically arises when there is an issue with the lock management system in SAP. This can occur due to various reasons, including:
  Causes:
  
  Database Lock Issues: There may be a problem with the database locks that are not being released properly, leading to inconsistencies.
  System Resource Limitations: Insufficient system resources (like memory or CPU) can lead to failures in lock management.
  Corrupted Lock Entries: Sometimes, lock entries in the database can become corrupted, causing the lock management to fail.
  Concurrency Issues: High levels of concurrent access to the same data can lead to lock contention and errors.
  Software Bugs: There may be bugs in the SAP system or specific patches that have not been applied.
  
  Solutions:
  
  Check System Logs: Review the system logs (transaction SM21) for any related errors or warnings that could provide more context about the issue.
  Release Locks: Use transaction SM12 to check for and release any unnecessary or stale locks that may be causing the issue.
  Restart the Application Server: Sometimes, restarting the application server can help clear temporary issues with lock management.
  Check for Updates/Patches: Ensure that your SAP system is up to date with the latest patches and updates, as these may contain fixes for known issues.
  Database Consistency Check: Perform a consistency check on the database to identify and resolve any underlying issues.
  Increase System Resources: If resource limitations are suspected, consider increasing the memory or CPU allocation for the SAP system.
  Contact SAP Support: If the issue persists, it may be necessary to contact 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 relevant transaction codes such as SM12 (for lock entries), SM21 (for system logs), and ST22 (for dumps).
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review SAP documentation related to lock management and performance tuning to better understand how locks are managed within your system.
  
  By following these steps, you should be able to diagnose and potentially resolve the M2122 error in your SAP environment.