How To Fix J3021 - A system error occurred during locking

J3021 - Overview

• Message type: E = Error

• Message class: J3 - Dialog Messages for Data Pool Entry Transactions

• Message number: 021

• Message text: A system error occurred 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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message J3021 - A system error occurred during locking ?

  The SAP error message J3021, which states "A system error occurred during locking," typically indicates that there was an issue with the locking mechanism in the SAP system. This can happen for various reasons, and understanding the cause and potential solutions can help resolve the issue.
  Causes:
  
  Database Lock Issues: The error may occur if there are problems with the database locks, such as deadlocks or contention for resources.
  System Performance: High system load or performance issues can lead to timeouts or failures in acquiring locks.
  
  Configuration Issues: Incorrect configuration settings in the SAP system or database can lead to locking problems.
  Transport Issues: If the error occurs during a transport process, it may be related to issues with the transport directory or transport requests.
  User Session Issues: Sometimes, user sessions may not be properly terminated, leading to lingering locks.
  
  Solutions:
  
  Check System Logs: Review the system logs (transaction SM21) for any related error messages that can provide