How To Fix 00677 - Timeout while waiting for a connection to be established

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 677

• Message text: Timeout while waiting for a connection to be established

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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Smart SAP Assistant

• What is the cause and solution for SAP error message 00677 - Timeout while waiting for a connection to be established ?

  The SAP error message "00677 Timeout while waiting for a connection to be established" typically indicates that the SAP system is unable to establish a connection to a database or another system component within the specified timeout period. This can occur for various reasons, and understanding the cause is crucial for troubleshooting and resolving the issue.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP application server and the database server or other components.
  Database Server Down: The database server may be down or not responding to connection requests.
  Configuration Issues: Incorrect configuration settings in the SAP system or database connection parameters can lead to connection timeouts.
  Resource Limitations: The database server may be overloaded or running out of resources (e.g., memory, CPU), causing it to be slow in responding to connection requests.
  Firewall or Security Settings: Firewalls or security settings may be blocking the connection attempts.
  Connection Pooling Issues: If connection pooling is not configured correctly, it may lead to exhaustion of available connections.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection between the SAP application server and the database server is stable and functioning. You can use tools like ping or traceroute to diagnose network issues.
  Verify Database Status: Check if the database server is up and running. You can do this by logging into the database directly or using monitoring tools.
  Review Configuration Settings: Verify the connection parameters in the SAP system (e.g., database connection settings in the SAP profile or transaction codes like DBACOCKPIT).
  Monitor Resource Usage: Check the resource usage on the database server. If it is overloaded, consider optimizing queries, increasing resources, or tuning the database.
  Check Firewall Settings: Ensure that the necessary ports are open and that there are no firewall rules blocking the connection.
  Adjust Connection Pooling: If using connection pooling, review the configuration to ensure that the maximum number of connections is set appropriately and that connections are being released properly.
  Increase Timeout Settings: If the issue persists, consider increasing the timeout settings in the SAP system or database configuration.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Transaction Codes: Use transaction codes like SM21 (System Log), ST22 (Dump Analysis), and DBACOCKPIT (Database Administration) to gather more information about the error and system status.
  Logs: Review the application server logs and database logs for any additional error messages or warnings that could provide more context about the issue.
  
  By systematically checking these areas, you should be able to identify the root cause of the timeout error and implement an appropriate solution.