How To Fix 00464 - Communication system error: deallocate failed

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 464

• Message text: Communication system error: deallocate 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 00464 - Communication system error: deallocate failed ?

  The SAP error message "00464 Communication system error: deallocate failed" typically indicates a problem with the communication between the SAP application server and the database or the underlying operating system. This error can arise from various issues, including resource allocation problems, network issues, or configuration errors.
  Causes:
  
  Resource Limitations: The server may be running out of resources (memory, CPU, etc.), leading to failures in deallocating resources.
  Network Issues: Problems with the network connection between the application server and the database can cause communication errors.
  Database Locking: If the database is locked or experiencing issues, it may not be able to deallocate resources properly.
  Configuration Errors: Incorrect settings in the SAP system or the database configuration can lead to communication failures.
  Operating System Issues: Problems at the OS level, such as file system issues or process limits, can also cause this error.
  
  Solutions:
  
  Check System Resources: Monitor the server's CPU, memory, and disk usage. Ensure that there are sufficient resources available.
  Review Network Configuration: Check the network settings and ensure that there are no connectivity issues between the SAP application server and the database.
  Database Health Check: Perform a health check on the database to ensure it is functioning correctly. Look for locks or long-running transactions that may be causing issues.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error. SAP frequently releases patches and updates that can resolve known issues.
  Review Logs: Check the SAP application logs (transaction SM21) and the database logs for any additional error messages or warnings that could provide more context.
  Restart Services: If the issue persists, consider restarting the SAP application server or the database services to clear any temporary issues.
  Consult SAP Support: If the problem continues after trying the above solutions, it may be necessary to contact SAP Support for further assistance.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SM21 (System Log), ST22 (Dump Analysis), and SM37 (Job Monitoring) to gather more information about the error.
  SAP Notes: Regularly check for updates and patches related to your SAP version, as these can often resolve known issues.
  Documentation: Review the official SAP documentation for your specific version to understand any known issues or configuration requirements.
  
  By following these steps, you should be able to diagnose and potentially resolve the "00464 Communication system error: deallocate failed" error in your SAP environment.