How To Fix /SDF/DB6122 - Too many lock timeouts occur in the system

SAP Error Message - Details

• Message type: E = Error

• Message class: /SDF/DB6 -

• Message number: 122

• Message text: Too many lock timeouts occur in the system

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 /SDF/DB6122 - Too many lock timeouts occur in the system ?

  The SAP error message /SDF/DB6122 Too many lock timeouts occur in the system typically indicates that there are issues related to database locks in the SAP system. This can happen when multiple transactions are trying to access the same data simultaneously, leading to contention and lock timeouts.
  Causes:
  
  High Concurrency: Multiple users or processes trying to access the same data at the same time can lead to lock contention.
  Long-Running Transactions: If a transaction holds a lock for an extended period, it can block other transactions from accessing the same data.
  Inefficient Queries: Poorly optimized queries can take longer to execute, holding locks longer than necessary.
  Deadlocks: Situations where two or more transactions are waiting for each other to release locks can lead to timeouts.
  Database Configuration: Inadequate database configuration settings for handling locks and transactions can exacerbate the issue.
  
  Solutions:
  
  Analyze Lock Situations: Use transaction codes like SM12 (to view and manage locks) and SM21 (to check system logs) to identify which transactions are causing lock contention.
  Optimize Transactions: Review and optimize long-running transactions to ensure they complete as quickly as possible. This may involve optimizing SQL queries or breaking down large transactions into smaller ones.
  Increase Lock Timeout Settings: Depending on the database being used, you may be able to increase the lock timeout settings to allow transactions more time to complete before timing out.
  Implement Proper Indexing: Ensure that the database tables are properly indexed to speed up query execution and reduce lock duration.
  Review Application Logic: Check the application logic to ensure that locks are being acquired and released appropriately. Avoid holding locks longer than necessary.
  Monitor System Performance: Regularly monitor system performance and lock statistics to identify trends and potential issues before they become critical.
  Database Tuning: Work with your database administrator to tune the database settings for better lock management and performance.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to lock management and performance tuning for specific guidance and updates.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12, SM21, ST22 (for dumps), and ST03 (for workload analysis).
  Database Documentation: Refer to the documentation for your specific database (e.g., HANA, Oracle, SQL Server) for best practices on managing locks and transactions.
  
  By addressing the underlying causes and implementing the suggested solutions, you can reduce the occurrence of lock timeouts and improve the overall performance of your SAP system.