How To Fix DB6548 - Der CHNGPGS_THRESH parameter value is out of range

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 548

• Message text: Der CHNGPGS_THRESH parameter value is out of range

1st and 2nd blocks are copies of 1st and 2nd blocks of DB6 546
<LB>&CAUSE&</>
By setting this database configuration parameter (CHNGPGS_THRESH), you
determine at what number of changed pages in the buffer pool should
these be written asynchronously to the database. This is done by the
Page Cleaner.

System Response

If you set too high a value for the parameter, it may be that pages are
not written to the database on time. These pages are then written
(before they are replaced because of lack of space) synchronously; that
is, the application must wait until the page that is to be replaced has
been written.
On the other hand, if too low a value is set for the parameter, the
system will write pages to the database unnecessarily often.

How to fix this error?

Correct the parameter using the command:
<LB>UPDATE DB CFG USING CHNGPGS_THRESH <value></>
You can find more information about this topic in the messages for the
<DS:NA.DB6152>Page Cleaner</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DB6548 - Der CHNGPGS_THRESH parameter value is out of range ?

  The SAP error message DB6548 indicates that the parameter value for CHNGPGS_THRESH is out of the acceptable range. This parameter is related to the database configuration, specifically for managing the threshold for change pages in the database.
  Cause:
  The CHNGPGS_THRESH parameter is used to define the threshold for the number of change pages that can be generated before a certain action is taken by the database system. If the value set for this parameter is outside the acceptable range defined by the database system, you will encounter this error.
  Solution:
  To resolve the DB6548 error, you need to adjust the value of the CHNGPGS_THRESH parameter to a valid range. Here are the steps to do this:
  
  
  Check Current Value: First, check the current value of the CHNGPGS_THRESH parameter. You can do this by executing a command in the database or checking the database configuration settings.
  
  
  Determine Valid Range: Refer to the database documentation or SAP notes to find the valid range for the CHNGPGS_THRESH parameter. This information will help you understand what values are acceptable.
  
  
  Modify the Parameter:
  
  If you have access to the database configuration, you can modify the parameter value directly. This is typically done through a database management tool or command line interface.
  Set the CHNGPGS_THRESH parameter to a value within the valid range.
  
  
  
  Restart Database: After making changes to the parameter, you may need to restart the database for the changes to take effect.
  
  
  Monitor the System: After adjusting the parameter, monitor the system to ensure that the error does not reoccur and that the database is functioning as expected.
  
  
  Related Information:
  
  Database Documentation: Always refer to the official documentation for your specific database version (e.g., SAP HANA, Oracle, etc.) for detailed information on parameters and their configurations.
  SAP Notes: Check SAP Notes for any specific recommendations or patches related to this error message.
  Performance Monitoring: Keep an eye on database performance metrics after changing the parameter to ensure that the new setting is optimal for your workload.
  
  If you continue to experience issues after making these changes, consider reaching out to SAP support or your database administrator for further assistance.