How To Fix /PRA/PN135 - Queue exists but Queue Manager not running; attempting to restart

SAP Error Message - Details

• Message type: E = Error

• Message class: /PRA/PN -

• Message number: 135

• Message text: Queue exists but Queue Manager not running; attempting to restart

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PRA/PN135 - Queue exists but Queue Manager not running; attempting to restart ?

  The SAP error message /PRA/PN135 Queue exists but Queue Manager not running; attempting to restart typically indicates that there is an issue with the Queue Manager in the SAP Process Integration (PI) or Process Orchestration (PO) environment. This error suggests that a queue exists, but the Queue Manager responsible for processing messages in that queue is not currently running. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Queue Manager Not Running: The most straightforward cause is that the Queue Manager service has stopped or is not running due to various reasons such as system crashes, manual shutdowns, or configuration issues.
  Resource Issues: Insufficient system resources (CPU, memory) can prevent the Queue Manager from starting or functioning properly.
  Configuration Issues: Incorrect configuration settings in the SAP PI/PO system can lead to the Queue Manager not being able to start.
  Database Issues: Problems with the underlying database that the Queue Manager relies on can also cause it to fail.
  Network Issues: If the Queue Manager is trying to connect to other services or databases over the network, any network issues can prevent it from starting.
  
  Solution:
  
  Check Queue Manager Status: Verify if the Queue Manager is indeed not running. You can do this through the SAP NetWeaver Administrator or by checking the relevant logs.
  Restart the Queue Manager: If the Queue Manager is not running, attempt to restart it. This can often resolve temporary issues.
  
  Use transaction SXMB_MONI to monitor the queues and check their status.
  Use transaction SICF to check the services related to the Queue Manager.
  
  
  Check Logs: Review the logs for any error messages that might indicate why the Queue Manager is not running. Look in the dev_xxx logs or the application logs in transaction SLG1.
  System Resources: Ensure that the server has enough resources (CPU, memory) available. If resources are low, consider optimizing or upgrading the server.
  Configuration Review: Check the configuration settings for the Queue Manager in the SAP PI/PO system. Ensure that all settings are correct and that there are no misconfigurations.
  Database Health: Check the health of the database. Ensure that it is running and accessible. Look for any database-related errors in the logs.
  Network Connectivity: Ensure that there are no network issues preventing the Queue Manager from connecting to other necessary services or databases.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the specific error message for any patches or updates that may address known issues.
  Documentation: Refer to the official SAP documentation for Process Integration/Orchestration for detailed information on configuring and managing the Queue Manager.
  Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.
  
  By following these steps, you should be able to diagnose and resolve the issue related to the Queue Manager not running in your SAP environment.