How To Fix SMMSS_ALERTS066 - Transaction Log &1% used

SAP Error Message - Details

• Message type: E = Error

• Message class: SMMSS_ALERTS - Message class for MSSQL rz20 messages

• Message number: 066

• Message text: Transaction Log &1% used

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SMMSS_ALERTS066 - Transaction Log &1% used ?

  The SAP error message SMMSS_ALERTS066 indicates that the transaction log for a specific database is nearing its capacity, with a certain percentage of the log being used. This can lead to performance issues or even system downtime if not addressed promptly.
  Cause:
  The primary cause of this error is that the transaction log is filling up due to a high volume of transactions or insufficient log space management. This can happen for several reasons:
  
  Long-running transactions that hold onto log space.
  Lack of regular log backups (in systems where this is applicable).
  High transaction volume that exceeds the log's capacity.
  Configuration issues related to the database or log file settings.
  
  Solution:
  To resolve the issue, you can take the following steps:
  
  
  Check Transaction Log Usage:
  
  Use transaction codes like DB02 or DBACOCKPIT to monitor the database and check the current usage of the transaction log.
  
  
  
  Perform Log Backups (if applicable):
  
  If you are using a database that requires log backups (like SQL Server), ensure that you are regularly backing up the transaction log. This will free up space in the log.
  
  
  
  Increase Log Size:
  
  If the log is consistently filling up, consider increasing the size of the transaction log. This can be done through database management tools or SQL commands, depending on your database system.
  
  
  
  Review Long-Running Transactions:
  
  Identify and optimize any long-running transactions that may be holding onto log space unnecessarily.
  
  
  
  Database Configuration:
  
  Review the database configuration settings related to the transaction log. Ensure that they are set appropriately for your workload.
  
  
  
  Regular Maintenance:
  
  Implement regular maintenance tasks, such as clearing out old logs, to prevent the transaction log from filling up in the future.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation or your database vendor's documentation for specific instructions related to managing transaction logs.
  
  
  
  Related Information:
  
  Database Type: The steps to resolve the issue may vary depending on the database system you are using (e.g., Oracle, SQL Server, HANA).
  Monitoring Tools: Utilize SAP's monitoring tools like Solution Manager or DBACOCKPIT for ongoing monitoring of database performance and transaction log usage.
  SAP Notes: Check SAP Notes for any specific recommendations or patches related to this error message.
  
  By following these steps, you should be able to address the SMMSS_ALERTS066 error and ensure that your transaction log is managed effectively.