How To Fix L9002 - Global lock table is full (wait)

SAP Error Message - Details

• Message type: E = Error

• Message class: L9 - Function Modules

• Message number: 002

• Message text: Global lock table is full (wait)

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

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.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message L9002 - Global lock table is full (wait) ?

  The SAP error message L9002: Global lock table is full (wait) indicates that the global lock table, which is used by the SAP system to manage locks on objects, has reached its maximum capacity. This can lead to performance issues and can prevent users from obtaining necessary locks to perform transactions.
  Causes:
  
  High Lock Demand: A large number of concurrent users or processes trying to access and lock objects can fill the lock table quickly.
  Long-Running Transactions: Transactions that hold locks for an extended period can contribute to the lock table being filled.
  Configuration Limits: The default configuration for the global lock table may not be sufficient for the workload of your SAP system.
  Inefficient Lock Management: Poorly designed programs or transactions that do not release locks promptly can lead to lock table saturation.
  
  Solutions:
  
  
  Increase Lock Table Size:
  
  You can increase the size of the global lock table by adjusting the parameter enque/table_size in the SAP profile. This requires a restart of the SAP system.
  To do this, go to transaction RZ10, select the appropriate profile, and modify the parameter.
  
  
  
  Optimize Transactions:
  
  Review and optimize long-running transactions to ensure they release locks as soon as they are no longer needed.
  Analyze the code for any inefficient locking mechanisms and refactor them if necessary.
  
  
  
  Monitor Lock Usage:
  
  Use transaction SM12 to monitor and analyze lock entries. Identify any locks that are held for too long and investigate the processes holding them.
  Regularly check for orphaned locks that may need to be cleared.
  
  
  
  Implement Lock Management Best Practices:
  
  Ensure that your development team follows best practices for lock management, such as minimizing the scope and duration of locks.
  Encourage the use of optimistic locking where applicable.
  
  
  
  System Performance Tuning:
  
  Review overall system performance and resource allocation. Sometimes, performance issues can exacerbate lock contention.
  
  
  
  Consult SAP Notes:
  
  Check for any relevant SAP Notes that may provide additional guidance or patches related to lock management.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: To view and manage lock entries.
  SM21: To check system logs for any related errors or warnings.
  RZ10: To change instance profile parameters.
  
  
  
  SAP Documentation: Refer to the official SAP documentation for detailed information on lock management and configuration.
  
  
  Performance Monitoring Tools: Consider using tools like SAP Solution Manager or other performance monitoring tools to gain insights into system performance and lock contention.
  
  
  By addressing the underlying causes and implementing the suggested solutions, you can mitigate the occurrence of the L9002 error and improve the overall performance of your SAP system.