After a restart or at some point during normal system operation, a "system freeze" or "system standstill" situation is perceived. The most common symptoms (in any combination) of such scenario are:
- Users cannot log on to the system or, when they can, it is after a long time.
- Users already logged on to the system cannot work normally. SAP server seem not to be able to process new tasks.
- Work process table (as seen in SM50) shows most of the work processes allocated, working on some task.
- Unprocessed requests might be stacking up due to the lack of processing power.
By following this document, at the end of your analysis you should have fulfilled the following tasks / created the following evidence for future analysis:
- List of required processes running at OS level (instProc.log).
- Snapshot from work process table collected through operating system tools (wpTable.log).
- Identity a possible standstill caused by a semaphore holder (If applicable).
- CallStack extracted from the process possibly holding a semaphore. (semStack.log OR dispStack.log) (If applicable).
- Complete (compressed) work folder from the affected server, matching the time of the issue.
- This document is not valid for crash / startup problem scenarios, meaning that the relevant processes must be up and running at operating system level.
- If your system / instance cannot even start, please check this SAP wiki document;
- SAP Netweaver Relase independent.
KBA , BC-CST-DP , Dispatcher, Task Handler , BC-CST , Client/Server Technology , Problem
About this pageThis is a preview of a SAP Knowledge Base Article. Click more to access the full version on SAP ONE Support launchpad (Login required).
Search for additional results
Visit SAP Support Portal's SAP Notes and KBA Search.