How To Fix DB6513 - The DFT_MON_BUFPOOL switch is not set

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 513

• Message text: The DFT_MON_BUFPOOL switch is not set

Copy of DB6 511

What causes this issue?

To allow meaningful monitoring of the database, you must activate this
switch.

System Response

If this switch is not set, it can lead to problems ranging from
restricting the function of the CCMS transactions to erroneous
terminations.

How to fix this error?

Activate the switch by setting the appropriate database manager
parameters using the following command:
<LB>UPDATE DBM CFG USING DFT_MON_BUFPOOL ON </>
The setting will become active at the next connection to the database.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DB6513 - The DFT_MON_BUFPOOL switch is not set ?

  The SAP error message DB6513 indicates that the DFT_MON_BUFPOOL switch is not set. This message typically arises in the context of database monitoring and performance analysis, particularly when using the SAP database interface.
  Cause:
  The error occurs because the DFT_MON_BUFPOOL switch, which is responsible for monitoring the buffer pool of the database, is not enabled. This switch is essential for collecting and displaying buffer pool statistics, which are crucial for performance tuning and monitoring.
  Solution:
  To resolve this issue, you need to enable the DFT_MON_BUFPOOL switch. The steps to do this can vary depending on the database system you are using (e.g., SAP HANA, Oracle, SQL Server, etc.). Here are general steps you can follow:
  
  
  Check Database Documentation: Refer to the specific documentation for your database system to find the exact method for enabling the DFT_MON_BUFPOOL switch.
  
  
  Enable the Switch:
  
  For SAP HANA: You can enable the switch using the SQL command:
  ALTER SYSTEM SET DFT_MON_BUFPOOL = 'ON';
  
  For Oracle: You may need to set the parameter in the initialization file or use an SQL command to enable monitoring.
  For SQL Server: You might need to adjust the server settings or use specific commands to enable buffer pool monitoring.
  
  
  
  Restart the Database: In some cases, you may need to restart the database for the changes to take effect.
  
  
  Verify the Setting: After enabling the switch, verify that it is set correctly by querying the relevant system views or using monitoring tools.
  
  
  Check SAP Notes: Look for any relevant SAP Notes that might provide additional guidance or updates related to this error message.
  
  
  Related Information:
  
  Monitoring Tools: Familiarize yourself with the monitoring tools available for your database system, as they can provide insights into buffer pool performance and other metrics.
  Performance Tuning: Understanding buffer pool management is crucial for optimizing database performance. Consider reviewing best practices for buffer pool tuning specific to your database.
  SAP Support: If you continue to experience issues or if enabling the switch does not resolve the error, consider reaching out to SAP Support for further assistance.
  
  By following these steps, you should be able to resolve the DB6513 error and enable the necessary monitoring for your database buffer pool.