How To Fix HH009 - Change the 'logging mode' of the database

SAP Error Message - Details

• Message type: E = Error

• Message class: HH - (Long) text for check tool 'infcfgcheck'

• Message number: 009

• Message text: Change the 'logging mode' of the database

What causes this issue?

A logging mode which is not equal to 'unbuffered logging' was
determined. 'Unbuffered logging' must be activated during running
operation! Other modes can result in a loss of data!

System Response

How to fix this error?

You can bring the database to "unbuffered logging" mode using the
sapdba tool (or 'ontape').

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message HH009 - Change the 'logging mode' of the database ?

  The SAP error message HH009, which states "Change the 'logging mode' of the database," typically occurs when there is a mismatch between the logging mode of the database and the requirements of the SAP system. This error is often encountered during database operations, such as when trying to perform a backup or when the system is trying to access certain database features that require a specific logging mode.
  Cause:
  The error is usually caused by one of the following reasons:
  
  Database Configuration: The database is configured to use a logging mode that is not compatible with the SAP system's requirements. For example, if the database is set to "no logging" mode, it may not support certain operations that SAP needs.
  Database Type: Different databases (like Oracle, SQL Server, etc.) have different logging modes, and the SAP system may require a specific mode to function correctly.
  Database Migration or Upgrade: If the database was recently migrated or upgraded, the logging mode may not have been set correctly.
  
  Solution:
  To resolve the HH009 error, you can take the following steps:
  
  
  Check Current Logging Mode:
  
  Use the database management tools or SQL commands to check the current logging mode of your database.
  
  
  
  Change Logging Mode:
  
  Depending on the database you are using, you will need to change the logging mode to a compatible setting. For example:
  
  Oracle: You may need to set the database to "archivelog" mode. This can be done using the following commands:
  SHUTDOWN IMMEDIATE;
  STARTUP MOUNT;
  ALTER DATABASE ARCHIVELOG;
  ALTER DATABASE OPEN;
  
  SQL Server: You can change the recovery model to "Full" using:
  ALTER DATABASE [YourDatabaseName] SET RECOVERY FULL;
  
  
  
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for your specific version and database type to ensure you are following the correct procedures for changing the logging mode.
  
  
  
  Backup:
  
  Before making any changes, ensure that you have a complete backup of your database to prevent data loss.
  
  
  
  Test:
  
  After changing the logging mode, test the SAP system to ensure that the error is resolved and that the system is functioning as expected.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific guidance or patches related to the HH009 error. SAP Notes often provide detailed instructions and troubleshooting steps.
  Database Documentation: Review the documentation for your specific database system to understand the implications of changing the logging mode and to ensure that you are following best practices.
  SAP Basis Team: If you are not familiar with database administration, it may be advisable to involve your SAP Basis team or a database administrator to assist with the changes.
  
  By following these steps, you should be able to resolve the HH009 error and ensure that your SAP system operates smoothly with the correct database logging mode.