How To Fix 00455 - System call error: signal function failed

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 455

• Message text: System call error: signal function failed

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message 00455 - System call error: signal function failed ?

  The SAP error message "00455 System call error: signal function failed" typically indicates that there is an issue with the operating system or the SAP kernel when trying to handle signals. This error can arise due to various reasons, including system resource limitations, configuration issues, or problems with the underlying operating system.
  Causes:
  
  Resource Limitations: The system may be running out of resources such as memory or process limits, which can prevent the signal function from executing properly.
  Kernel Issues: There may be a bug or issue with the SAP kernel version you are using. An outdated or incompatible kernel can lead to unexpected behavior.
  Operating System Configuration: Misconfigurations in the operating system, such as limits on the number of processes or threads, can cause this error.
  Signal Handling: The application may be trying to handle signals in a way that is not supported by the operating system or the current configuration.
  
  Solutions:
  
  Check System Resources: Monitor system resources (CPU, memory, disk space) to ensure that there are sufficient resources available. Use tools like top, htop, or vmstat to check resource usage.
  Review Kernel Version: Ensure that you are using a supported and up-to-date version of the SAP kernel. If necessary, upgrade to the latest version.
  Operating System Limits: Check and adjust the operating system limits for processes and threads. You can use commands like ulimit in Unix/Linux systems to view and modify these limits.
  Review Logs: Check the SAP application logs and operating system logs for any additional error messages or warnings that could provide more context about the issue.
  Restart SAP Services: Sometimes, simply restarting the SAP services or the entire server can resolve transient issues.
  Consult SAP Notes: Look for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide patches and updates.
  Contact SAP Support: If the issue persists, consider reaching out to SAP Support for further assistance, especially if you suspect a bug or require deeper analysis.
  
  Related Information:
  
  SAP Notes: Always check the SAP Support Portal for any specific notes related to this error message. SAP frequently updates their knowledge base with solutions for known issues.
  System Monitoring Tools: Utilize SAP's monitoring tools (like SAP Solution Manager) to keep track of system performance and health.
  Documentation: Review the SAP documentation for your specific version and environment to ensure that all configurations are set correctly.
  
  By following these steps, you should be able to diagnose and potentially resolve the "00455 System call error: signal function failed" error in your SAP environment.