How To Fix W_PARA005 - Dispatcher received no timeout - still waiting for all tasks

SAP Error Message - Details

• Message type: E = Error

• Message class: W_PARA - Messages for Parallel Processing Variants

• Message number: 005

• Message text: Dispatcher received no timeout - still waiting for all tasks

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message W_PARA005 - Dispatcher received no timeout - still waiting for all tasks ?

  The SAP error message W_PARA005 indicates that the dispatcher is waiting for all tasks to complete but has not received a timeout signal. This can occur in various scenarios, often related to performance issues or configuration problems in the SAP system.
  Causes:
  
  Long-Running Tasks: Some tasks may be taking longer than expected to complete, causing the dispatcher to wait indefinitely.
  Deadlocks: There may be deadlocks in the system where two or more processes are waiting for each other to release resources.
  Resource Bottlenecks: Insufficient system resources (CPU, memory, I/O) can lead to delays in task processing.
  Configuration Issues: Incorrect configuration of the SAP system parameters related to the dispatcher or work processes can lead to this error.
  Network Issues: Problems in the network can cause delays in communication between the application server and the database or other services.
  
  Solutions:
  
  Monitor Long-Running Tasks: Use transaction codes like SM50 or SM66 to monitor the work processes and identify any long-running tasks. You may need to terminate or optimize these tasks.
  Check for Deadlocks: Use transaction SM21 to check the system log for any deadlock situations. If found, you may need to analyze the processes involved and resolve the deadlock.
  Review System Resources: Check the system's CPU, memory, and I/O usage. If resources are maxed out, consider scaling up the hardware or optimizing the workload.
  Adjust Dispatcher Settings: Review and adjust the dispatcher settings in the instance profile. Parameters like rdisp/timeout can be configured to set appropriate timeout values.
  Check Network Configuration: Ensure that there are no network issues affecting communication between the SAP application server and the database or other services.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide patches and updates.
  
  Related Information:
  
  Transaction Codes: 
  
  SM50: Monitor work processes.
  SM66: Monitor global work processes.
  SM21: System log for error messages.
  ST22: Dump analysis for ABAP runtime errors.
  
  
  SAP Documentation: Refer to the official SAP documentation for detailed information on dispatcher settings and performance tuning.
  Performance Tuning: Consider conducting a performance tuning exercise to identify bottlenecks and optimize the system.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage SAP support for further assistance.