How To Fix /SCWM/L3340 - Error while reading the lock table

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/L3 -

• Message number: 340

• Message text: Error while reading the lock table

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 /SCWM/L3340 - Error while reading the lock table ?

  The SAP error message /SCWM/L3340 indicates that there is an issue related to reading the lock table in the SAP Extended Warehouse Management (EWM) system. This error typically arises when there are problems with database locks or when the system is unable to access the lock table due to various reasons.
  Causes:
  
  Database Lock Issues: The lock table may be locked by another transaction, preventing the current transaction from accessing it.
  Database Performance: High load on the database or performance issues can lead to timeouts or inability to read from the lock table.
  Configuration Issues: Incorrect configuration settings in the EWM system or database settings may lead to this error.
  System Bugs: There may be bugs in the SAP EWM version you are using that could cause this error.
  
  Solutions:
  
  Check Lock Entries: Use transaction code SM12 to check for existing lock entries. If there are unnecessary locks, you can delete them (ensure that you understand the implications of removing locks).
  Database Performance: Monitor the database performance and check for any long-running transactions that may be holding locks. Optimize queries or increase database resources if necessary.
  System Restart: In some cases, restarting the application server or the database server can help clear temporary issues.
  Review Configuration: Ensure that your EWM and database configurations are correct and optimized for performance.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes or patches that address this specific error. There may be updates or fixes available for your version of EWM.
  Contact SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including any relevant logs or transaction details.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (for lock entries), SM21 (for system logs), and ST22 (for dumps) to diagnose the issue further.
  Monitoring Tools: Use SAP monitoring tools to keep an eye on system performance and identify potential bottlenecks.
  Documentation: Refer to the official SAP documentation for EWM for best practices on configuration and performance tuning.
  
  By following these steps, you should be able to diagnose and resolve the /SCWM/L3340 error effectively.