How To Fix /SAPAPO/CTM1802 - Connection to liveCache is not currently possible

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/CTM1 -

• Message number: 802

• Message text: Connection to liveCache is not currently possible

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/CTM1802 - Connection to liveCache is not currently possible ?

  The SAP error message /SAPAPO/CTM1802 Connection to liveCache is not currently possible typically indicates that there is an issue with the connection between the SAP system and the liveCache database, which is used in Advanced Planning and Optimization (APO) for various planning functions.
  Causes:
  
  LiveCache Service Not Running: The liveCache service may not be started or may have crashed.
  Network Issues: There could be network connectivity problems between the SAP application server and the liveCache server.
  Configuration Issues: Incorrect configuration settings in the SAP system or liveCache settings can lead to connection problems.
  Database Issues: The liveCache database may be experiencing issues, such as being locked or corrupted.
  Resource Limitations: The server hosting liveCache may be running out of resources (CPU, memory, etc.), leading to connection failures.
  
  Solutions:
  
  
  Check LiveCache Status:
  
  Ensure that the liveCache service is running. You can check this using transaction LC10 or by accessing the liveCache administration tools.
  If it is not running, start the service.
  
  
  
  Network Connectivity:
  
  Verify that there are no network issues between the SAP application server and the liveCache server. You can use tools like ping or telnet to check connectivity.
  Ensure that firewalls or security settings are not blocking the connection.
  
  
  
  Configuration Settings:
  
  Check the configuration settings in the SAP system for liveCache. This includes parameters in the RZ10 transaction and settings in the LC10 transaction.
  Ensure that the connection parameters (like host, port, etc.) are correctly configured.
  
  
  
  Database Health:
  
  Check the health of the liveCache database. You can use transaction LC10 to monitor the status and performance of the liveCache.
  If there are issues, consider performing a database recovery or maintenance.
  
  
  
  Resource Monitoring:
  
  Monitor the resource usage on the server hosting liveCache. If it is running low on resources, consider optimizing the server or upgrading hardware.
  
  
  
  SAP Notes:
  
  Check for any relevant SAP Notes that may address this specific error. SAP frequently releases updates and patches that can resolve known issues.
  
  
  
  Restart Services:
  
  If all else fails, consider restarting both the SAP application server and the liveCache service to reset any potential transient issues.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  LC10: LiveCache Administration
  RZ10: Profile Maintenance
  SM21: System Log
  SM37: Job Monitoring
  
  
  
  Documentation: Refer to SAP Help documentation for liveCache and APO for detailed configuration and troubleshooting steps.
  
  
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or consult SAP support for further assistance.