/SDF/MON042 - Collecting the enqueue entries may put a load on the enqueue table

SAP Error Message - Details

• Message type: E = Error

• Message class: /SDF/MON -

• Message number: 042

• Message text: Collecting the enqueue entries may put a load on the enqueue 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 /SDF/MON042 - Collecting the enqueue entries may put a load on the enqueue table ?

  The SAP error message /SDF/MON042 indicates that collecting enqueue entries may put a load on the enqueue table. This message typically arises in the context of monitoring or performance analysis within SAP systems, particularly when dealing with enqueue locks.
  Cause:
  The error message is generally triggered when the system is attempting to collect or analyze enqueue entries, which are used to manage locks on objects in the SAP system. The potential causes for this message include:
  
  High Volume of Enqueue Entries: If there are a large number of enqueue entries, collecting them can lead to performance issues, as the enqueue table may become overloaded.
  System Performance Issues: If the system is already under heavy load, additional operations to collect enqueue entries can exacerbate performance problems.
  Long-Running Transactions: Transactions that hold locks for extended periods can lead to a buildup of enqueue entries, making collection more resource-intensive.
  Configuration Issues: Misconfigurations in the enqueue server or related settings can lead to inefficient handling of enqueue entries.
  
  Solution:
  To address the issue indicated by the error message, consider the following solutions:
  
  
  Monitor Enqueue Usage: Use transaction codes like SM12 (to view locks) and SM21 (to check system logs) to monitor the current state of enqueue entries and identify any long-running transactions or locks that may be causing the issue.
  
  
  Optimize Long-Running Transactions: Identify and optimize any long-running transactions that may be holding locks for too long. This may involve reviewing the code or processes involved in these transactions.
  
  
  Increase System Resources: If the system is under heavy load, consider increasing the resources allocated to the SAP system, such as CPU and memory, to better handle the enqueue operations.
  
  
  Adjust Enqueue Server Settings: Review and adjust the configuration settings for the enqueue server to ensure it is optimized for your workload. This may involve tuning parameters related to lock handling.
  
  
  Regular Maintenance: Implement regular maintenance tasks to clean up unnecessary locks and ensure that the enqueue table does not become overloaded.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may provide additional guidance or patches related to this error message.
  
  
  Related Information:
  
  Enqueue Table: The enqueue table is a critical component of the SAP locking mechanism, which ensures data consistency by preventing concurrent access to the same data by multiple users or processes.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (to view and manage locks), SM21 (to view system logs), and ST22 (to analyze dumps) for troubleshooting.
  Performance Monitoring: Utilize tools like SAP Solution Manager or other performance monitoring tools to keep an eye on system performance and identify potential bottlenecks.
  
  By following these steps, you should be able to mitigate the issues related to the /SDF/MON042 error message and improve the performance of your SAP system.