How To Fix DB6557 - The LOGRETAIN parameter is not set

SAP Error Message - Details

• Message type: E = Error

• Message class: DB6 - DB6: Alert Monitoring and Alert Configuration

• Message number: 557

• Message text: The LOGRETAIN parameter is not set

Partial copy of DB6 555

What causes this issue?

In order to ensure that you can fully restore the database after
importing a database backup, you must activate logging of changes in
log files. You must also set the two database configuration parameters
LOGRETAIN and USEREXIT correctly.

System Response

If the LOGRETAIN parameter is not set, the log files will be cyclically
overwritten and reused. It is then no longer possible to restore the
database to the most up-to-date state.

How to fix this error?

Set the parameter using the command:
<LB>UPDATE DB CFG USING LOGRETAIN ON</>

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DB6557 - The LOGRETAIN parameter is not set ?

  The SAP error message DB6557 indicates that the LOGRETAIN parameter is not set in the database configuration. This parameter is crucial for managing the database's transaction log, particularly in environments where point-in-time recovery is necessary.
  Cause:
  The LOGRETAIN parameter controls how the database handles transaction logs. If it is not set, the database may not retain logs long enough for recovery purposes, which can lead to issues when trying to perform certain operations, such as backups or point-in-time recovery. This error typically arises in the following scenarios:
  
  Database Configuration: The database is not configured to retain logs, which is often the case in non-production environments or when the database is set to a mode that does not require log retention.
  Database Type: Different databases (like Oracle, SQL Server, etc.) have different ways of handling log retention, and the parameter may not be set correctly for the specific database type being used with SAP.
  
  Solution:
  To resolve the DB6557 error, you need to set the LOGRETAIN parameter appropriately. The steps to do this can vary depending on the database system you are using. Here are general steps for common databases:
  
  
  For Oracle:
  
  Connect to the database using SQL*Plus or another database client.
  Check the current setting of the LOGRETAIN parameter:
  SHOW PARAMETER LOGRETAIN;
  
  If it is not set to RECYCLE or ARCHIVE, you can change it by executing:
  ALTER SYSTEM SET LOGRETAIN = 'ARCHIVE' SCOPE=SPFILE;
  
  Restart the database for the changes to take effect.
  
  
  
  For SQL Server:
  
  Open SQL Server Management Studio (SSMS).
  Right-click on the database and select Properties.
  Go to the Options page and check the Recovery Model.
  Set the Recovery Model to Full or Bulk-logged to ensure that logs are retained.
  If necessary, run a backup to ensure that the transaction log is managed correctly.
  
  
  
  For other databases:
  
  Refer to the specific documentation for your database system to find the equivalent parameter and how to set it.
  
  
  
  Related Information:
  
  Backup Strategy: Ensure that your backup strategy aligns with the log retention settings. Regular backups are essential to prevent data loss and manage log space effectively.
  Database Documentation: Always refer to the official documentation for your specific database version and SAP version for the most accurate and detailed instructions.
  SAP Notes: Check SAP Notes for any specific recommendations or patches related to this error message, as they may provide additional context or solutions.
  
  By setting the LOGRETAIN parameter correctly, you should be able to resolve the DB6557 error and ensure that your database can handle transaction logs appropriately for recovery and backup operations.