How To Fix K9158 - System error during locking

SAP Error Message - Details

• Message type: E = Error

• Message class: K9 - CO Planning Processor

• Message number: 158

• Message text: System error during locking

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message K9158 - System error during locking ?

  The SAP error message K9158, which indicates a "System error during locking," typically occurs when there is an issue with the locking mechanism in the SAP system. This can happen for various reasons, including database inconsistencies, issues with the application server, or problems with the lock table.
  Causes:
  
  Database Issues: Problems with the database, such as corruption or connectivity issues, can lead to locking errors.
  Lock Table Overflow: If the lock table is full, new locks cannot be created, leading to errors.
  Application Server Problems: Issues with the application server, such as memory shortages or configuration problems, can affect locking.
  Transaction Rollback: If a transaction is rolled back unexpectedly, it may leave locks in an inconsistent state.
  Network Issues: Network problems can disrupt communication between the application server and the database.
  
  Solutions:
  
  Check Lock Entries: Use transaction code SM12 to check for existing lock entries. You can delete any unnecessary locks that may be causing the issue.
  Monitor Lock Table: Use transaction code SM21 to check the system log for any related errors or warnings that might provide more context.
  Database Consistency Check: Run database consistency checks to ensure there are no underlying issues with the database.
  Restart Application Server: If the issue persists, consider restarting the application server to clear any temporary issues.
  Increase Lock Table Size: If the lock table is full, you may need to increase its size in the system configuration.
  Check for Updates: Ensure that your SAP system is up to date with the latest patches and updates, as these may contain fixes for known issues.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to error K9158 for specific guidance and troubleshooting steps. You can search for relevant notes in the SAP Support Portal.
  System Logs: Review system logs for any additional error messages that may provide more context about the locking issue.
  Performance Monitoring: Use transaction codes like ST22 (dump analysis) and SM37 (job monitoring) to identify any performance issues that may be contributing to the error.
  
  If the problem persists after trying the above solutions, it may be necessary to contact SAP support for further assistance.