How To Fix RT178 - Monitoring object: enqueue client

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 178

• Message text: Monitoring object: enqueue client

What causes this issue?

This monitoring tree element (MTE) provides information on the
performance of the enqueue client in SAP application servers. This
client is responsible for routing requests to the enqueue service in
application servers other than the one that offers the enqueue service.
(Work processes access the enqueue service directly in the application
server that offers this service.)
The enqueue service lets applications lock data for exclusive use.
Locking data while it is being used prevents changes to the data in
parallel, which would result in inconsistencies in the data.

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?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RT178 - Monitoring object: enqueue client ?

  The SAP error message RT178, which states "Monitoring object: enqueue client," typically relates to issues with the enqueue mechanism in SAP systems. This error can occur in various scenarios, often indicating that there is a problem with the lock management system, which is responsible for managing access to shared resources in the SAP environment.
  Cause:
  
  Lock Conflicts: The error may arise due to conflicts in lock requests, where multiple processes are trying to access the same resource simultaneously.
  Enqueue Server Issues: Problems with the enqueue server, such as it being down or not functioning correctly, can lead to this error.
  Client-Specific Issues: The error may also indicate that there are issues specific to the client in which the error is occurring, such as configuration problems or inconsistencies.
  Network Issues: Network connectivity problems between application servers and the enqueue server can also lead to this error.
  
  Solution:
  
  Check Enqueue Server Status: Ensure that the enqueue server is running properly. You can check this in the SAP system by using transaction code SM12 to view lock entries and SM21 for system logs.
  Review Lock Entries: Use transaction SM12 to check for any lock entries that may be causing conflicts. If necessary, you can delete stale or unnecessary locks.
  Restart Enqueue Server: If the enqueue server is not functioning correctly, consider restarting it. This can often resolve temporary issues.
  Check Configuration: Review the configuration settings for the client and ensure that they are correct. This includes checking the logical system settings and client-specific parameters.
  Network Troubleshooting: If you suspect network issues, check the connectivity between the application servers and the enqueue server. Ensure that there are no firewalls or network policies blocking communication.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates available that can resolve the issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (for lock entries), SM21 (for system logs), and SM37 (for job monitoring).
  SAP Basis Team: If you are unable to resolve the issue, it may be necessary to involve your SAP Basis team or SAP support for further assistance.
  Documentation: Refer to SAP documentation for more detailed information on enqueue management and troubleshooting.
  
  By following these steps, you should be able to diagnose and resolve the RT178 error in your SAP system.