SAP Knowledge Base Article - Preview

3414676 - Semaphore List

Symptom

  • If a work process locks a particular resource, it sets a semaphore. Another work process that also wants to access it must then wait. In this case, the number of semaphores is displayed by SM50.
  • Example: if any user while login (6: ROLL_ADM (roll administration)) semaphore will be locked, semaphore 6 is set
  • Semaphores are used to synchronize concurrent access to shared resource (mostly shared memory) to avoid corruptions.


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Keywords

 Semaphore; work process locked. , KBA , BC-OP-LNX , Linux , BC-CST , Client/Server Technology , Problem

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