How To Fix S1300 - SAPOSCOL not running (shared memory available)

SAP Error Message - Details

• Message type: E = Error

• Message class: S1 - Statistik / SAP-Monitor

• Message number: 300

• Message text: SAPOSCOL not running (shared memory available)

What causes this issue?

Either there is no collector running and the shared memory is active, or
a collector has never run before so that no shared memory has been
created.

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?

Run a collector before the SAP system is started. The collector from
Release 1.2A might run, but the system already has the status of 2.0A. A
new shared memory key is used for the new collector of Release 2.0A. The
new collector (status 2.0A) must be started.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message S1300 - SAPOSCOL not running (shared memory available) ?

  The SAP error message S1300 indicates that the SAPOSCOL (SAP Operating System Collector) is not running, which is essential for collecting operating system metrics and performance data. This error can occur in various scenarios, and here are the potential causes, solutions, and related information:
  Causes:
  
  SAPOSCOL Not Started: The SAPOSCOL process may not have been started or may have crashed.
  Configuration Issues: There may be issues with the configuration of the SAPOSCOL service.
  Insufficient Permissions: The user under which the SAP system is running may not have the necessary permissions to start or access SAPOSCOL.
  Resource Limitations: There may be resource limitations on the server, such as memory or CPU constraints, preventing SAPOSCOL from starting.
  Shared Memory Issues: Although the error mentions that shared memory is available, there could still be issues related to how shared memory is configured or allocated.
  
  Solutions:
  
  
  Start SAPOSCOL:
  
  You can manually start the SAPOSCOL process using the following command in the command line:
  saposcol
  
  Alternatively, you can start it from the SAP GUI:
  
  Go to transaction code SM66 or SM50 to check if SAPOSCOL is running.
  If not, you can start it from the operating system level or through the SAP management console.
  
  
  
  
  
  Check Configuration:
  
  Ensure that the configuration for SAPOSCOL is correct. This includes checking the parameters in the instance profile.
  Look for the parameter rdisp/auto_abap_start and ensure it is set to 1 to allow automatic starting of background processes.
  
  
  
  Check Permissions:
  
  Verify that the user running the SAP instance has the necessary permissions to execute SAPOSCOL.
  Check the ownership and permissions of the SAPOSCOL executable.
  
  
  
  Review Logs:
  
  Check the SAPOSCOL logs for any error messages that might indicate why it is not starting. Logs can typically be found in the dev_saposcol file in the work directory of the instance.
  
  
  
  Resource Monitoring:
  
  Monitor system resources (CPU, memory) to ensure that there are no constraints preventing SAPOSCOL from starting.
  Use tools like top, htop, or system monitoring tools to check resource usage.
  
  
  
  Restart SAP System:
  
  If all else fails, consider restarting the SAP system. This can sometimes resolve issues with processes that are not starting correctly.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to SAPOSCOL for any known issues or patches that may address the problem.
  Documentation: Refer to the official SAP documentation for more details on configuring and troubleshooting SAPOSCOL.
  Support: If the issue persists, consider reaching out to SAP support for further assistance.
  
  By following these steps, you should be able to diagnose and resolve the S1300 error related to SAPOSCOL not running.