How To Fix PU309 - Could not write database log completely

SAP Error Message - Details

• Message type: E = Error

• Message class: PU - Upgrade and Transport Log Messages

• Message number: 309

• Message text: Could not write database log completely

What causes this issue?

The database log &V1& was not written completely, since it contains
more than 100000 lines. This is the maximum amount of lines that can be
written.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PU309 - Could not write database log completely ?

  The SAP error message PU309, which states "Could not write database log completely," typically indicates an issue with the database logging mechanism in SAP. This error can arise due to various reasons, including database connectivity issues, insufficient database space, or problems with the database configuration.
  Causes:
  
  Database Connectivity Issues: There may be a problem with the connection between the SAP application server and the database server.
  Insufficient Database Space: The database may be running out of space, preventing it from writing new log entries.
  Database Configuration Issues: Incorrect configuration settings in the database or SAP system can lead to logging failures.
  Database Locking: If the database is locked or in a state that prevents writing logs, this error may occur.
  Transaction Log Issues: Problems with the transaction log (e.g., it being full or corrupted) can also lead to this error.
  
  Solutions:
  
  Check Database Space: Ensure that there is sufficient space available in the database. If the database is full, you may need to delete old logs or increase the database size.
  Review Database Connectivity: Verify that the connection between the SAP application server and the database server is stable and functioning correctly.
  Check Database Configuration: Review the database configuration settings to ensure they are correct and optimized for logging.
  Monitor Database Locks: Check for any locks on the database that may be preventing log writes. Resolve any locking issues if found.
  Transaction Log Management: If the transaction log is full, consider backing it up or clearing it, depending on your database management practices.
  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.
  
  Related Information:
  
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.
  System Logs: Review the system logs (transaction SM21) and the database logs for any additional error messages or warnings that could provide more context about the issue.
  Database Administration: Involve your database administrator (DBA) to help diagnose and resolve any underlying database issues.
  
  By following these steps, you should be able to identify and resolve the cause of the PU309 error in your SAP system.