How To Fix 00636 - Invalid NI handle

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 636

• Message text: Invalid NI handle

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.

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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 00636 - Invalid NI handle ?

  The SAP error message "00636 Invalid NI handle" typically relates to issues with the Network Interface (NI) in the SAP system. This error can occur in various contexts, often when there are problems with the communication between the SAP application server and the database or when there are issues with the network configuration.
  Causes:
  
  Network Configuration Issues: Problems with the network settings or configurations can lead to invalid handles.
  Database Connection Problems: If the connection to the database is not properly established or if there are issues with the database itself, this error may occur.
  Resource Limitations: Insufficient resources on the server, such as memory or CPU, can lead to this error.
  Corrupted SAP Kernel: A corrupted or outdated SAP kernel can also cause this error.
  Session Management Issues: Problems with session handling or session timeouts can lead to invalid handles.
  
  Solutions:
  
  Check Network Configuration: Ensure that the network settings are correctly configured. This includes checking the SAP profile parameters related to network settings.
  Database Connection: Verify that the database is up and running and that the connection parameters in the SAP system are correct. You may need to restart the database or check for any database-related errors.
  Resource Monitoring: Monitor the server resources (CPU, memory, etc.) to ensure that there are enough resources available. If necessary, allocate more resources or optimize the current usage.
  Update SAP Kernel: If the kernel is outdated or corrupted, consider updating it to the latest version or reinstalling it.
  Session Management: Review session management settings and ensure that sessions are being handled correctly. Check for any session timeouts or limits that may be causing issues.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates available that can resolve the issue.
  
  Related Information:
  
  SAP Support Portal: Utilize the SAP Support Portal to search for specific notes related to the error message.
  Transaction Codes: Use transaction codes like SM21 (System Log) and ST22 (Dump Analysis) to check for any related logs or dumps that can provide more context on the error.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  If the problem persists after trying the above solutions, it may be necessary to contact SAP support for further assistance.