How To Fix RT179 - Monitoring object enqueue client: Frequency

SAP Error Message - Details

• Message type: E = Error

• Message class: RT - Monitoring infrastructure MSG and alert texts

• Message number: 179

• Message text: Monitoring object enqueue client: Frequency

What causes this issue?

Here, you see the number of enqueue (logical data locking) operations
per minute originating from an SAP application server other than the
enqueue server itself. This is a relative measure of activity in the
system, useful only for analyzing unusual events or patterns of activity
in an application server.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

An alert in this MTE is very unlikely because the SAP enqueue service is
capable of handling very high rates of operation. Should such an alert
occur, then it indicates that wait times for lock operation is having an
adverse effect on the overall dialog response time. Such situations are
likely to be only of a temporary nature and should correct themselves.
They are likely to occur only under very unusual circumstances, such as
massively parallel execution of RFC calls to a particular server.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RT179 - Monitoring object enqueue client: Frequency ?

  The SAP error message RT179, which states "Monitoring object enqueue client: Frequency," typically relates to issues with the monitoring of enqueue objects in the SAP system. This error can occur in various contexts, often linked to performance monitoring or system resource management.
  Cause:
  
  Enqueue Lock Issues: The error may arise when there are problems with enqueue locks, which are used by SAP to manage concurrent access to resources. If the frequency of enqueue requests exceeds a certain threshold, it can trigger this error.
  High Load: A high number of requests or transactions that require enqueue locks can lead to contention, causing the system to generate this error.
  Configuration Issues: Incorrect configuration of monitoring parameters or thresholds in the SAP system can also lead to this error.
  System Performance: If the system is under heavy load or if there are performance bottlenecks, it may not be able to handle enqueue requests efficiently.
  
  Solution:
  
  Analyze System Load: Check the system load and performance metrics to identify if there are any bottlenecks. Use transaction codes like ST03N (Workload Analysis) or ST06 (Operating System Monitor) to analyze performance.
  Review Enqueue Locks: Use transaction code SM12 to review and analyze the current enqueue locks. Look for any locks that are held for an extended period and investigate the transactions causing them.
  Adjust Monitoring Parameters: If the error is due to configuration, consider adjusting the monitoring parameters related to enqueue frequency. This can be done in the SAP system settings.
  Optimize Code: If specific transactions or custom code are causing excessive enqueue requests, consider optimizing that code to reduce the frequency of locks.
  Increase Resources: If the system is consistently under heavy load, consider scaling up the resources (CPU, memory) allocated to the SAP system.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (Display and Delete Locks), SM21 (System Log), ST22 (Dump Analysis), and ST03N (Workload Analysis) for monitoring and troubleshooting.
  SAP Community: Engage with the SAP Community forums for insights and shared experiences from other users who may have encountered similar issues.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, especially if it impacts system performance or business operations.
  
  By following these steps, you should be able to diagnose and resolve the RT179 error in your SAP system.