How To Fix TC011 - The switches in SCSA cannot be accessed

TC011 - Overview

• Message type: E = Error

• Message class: TC - System trace. (RSTR....)

• Message number: 011

• Message text: The switches in SCSA cannot be accessed

What causes this issue?

The trace system uses switches that are created in the shared memory
segment 'SCSA'. The system cannot currently access these swtiches.

System Response

The trace system does not work. It remains switched off.

How to fix this error?

Look for the error in the syslog that resulted in the SCSA being
missing or unuseable.
When you have corrected the error, restart the instance (the SAP
application server).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TC011 - The switches in SCSA cannot be accessed ?

  The SAP error message TC011, which states "The switches in SCSA cannot be accessed," typically relates to issues with the SAP system's ability to access the switches in the SAP Central Services (SCS) instance. This can occur in a variety of scenarios, particularly in a distributed SAP environment where multiple application servers are involved.
  Causes:
  
  Network Issues: There may be network connectivity problems between the application server and the SCS instance.
  Configuration Errors: Incorrect configuration settings in the SAP system profile or in the SCS instance can lead to this error.
  SCS Instance Down: The SCS instance may not be running or may have crashed.
  Authorization Issues: The user or service account may not have the necessary permissions to access the SCS.
  Resource Limitations: Insufficient system resources (CPU, memory) can prevent the SCS from functioning properly.
  Firewall Settings: Firewalls may be blocking the necessary ports for communication between the application server and the SCS.
  
  Solutions:
  
  Check SCS Status: Ensure