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

/PRA/PN135 - Overview

• 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

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.

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/PRA/PN135 - Details

• 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