CTS_CONFIG_MSG_CL077 - Validation failed - instance of shared memory is already locked

SAP Error Message - Details

• Message type: E = Error

• Message class: CTS_CONFIG_MSG_CL - Message Class for Central CTS Configuration

• Message number: 077

• Message text: Validation failed - instance of shared memory is already locked

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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AnswerBot

• What is the cause and solution for SAP error message CTS_CONFIG_MSG_CL077 - Validation failed - instance of shared memory is already locked ?

  The SAP error message CTS_CONFIG_MSG_CL077 indicates that there is an issue with the transport management system (TMS) configuration, specifically related to shared memory locking. This error typically occurs when an instance of shared memory is already locked, preventing further operations that require access to that memory.
  Cause:
  
  Concurrent Access: The most common cause of this error is that multiple processes are trying to access the same shared memory instance simultaneously, leading to a lock conflict.
  Long-Running Processes: If a previous process that accessed the shared memory is still running or has not released the lock, it can cause this error.
  System Configuration Issues: Misconfigurations in the transport management system or the underlying system settings can also lead to this error.
  Memory Leaks: In some cases, memory leaks or improper handling of shared memory can lead to locks not being released as expected.
  
  Solution:
  
  Check Running Processes: Use transaction SM50 or SM66 to check for any long-running processes that might be holding the lock. If you find any, consider terminating them if they are not critical.
  Release Locks: If you identify a process that is holding the lock unnecessarily, you can release it. However, be cautious when terminating processes, as this can lead to data inconsistency.
  Restart TMS: Sometimes, restarting the transport management system can help clear any locks. You can do this by using transaction STMS and navigating to the TMS configuration.
  Check Configuration: Review the TMS configuration settings to ensure that they are set up correctly. You can do this in transaction STMS under the configuration settings.
  System Restart: If the issue persists and you cannot identify the cause, consider restarting the SAP system. This can help clear any lingering locks in shared memory.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error. SAP frequently releases updates and patches that can resolve known issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as STMS (Transport Management System), SM50 (Process Overview), and SM66 (Global Process Overview).
  SAP Support: If the issue continues after trying the above solutions, consider reaching out to SAP Support for further assistance. They may provide additional insights or patches that are not publicly available.
  Documentation: Review SAP documentation related to TMS and shared memory management for best practices and troubleshooting steps.
  
  By following these steps, you should be able to resolve the CTS_CONFIG_MSG_CL077 error and restore normal functionality to your SAP system.