How To Fix DB6PM778 - DBCFG - APP_CTL_HEAP_SZ - SAP recommendation: at least 1024

SAP Error Message - Details

• Message type: E = Error

• Message class: DB6PM - DB2 UDB for UNIX, Windows: Performance Monitoring

• Message number: 778

• Message text: DBCFG - APP_CTL_HEAP_SZ - SAP recommendation: at least 1024

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DB6PM778 - DBCFG - APP_CTL_HEAP_SZ - SAP recommendation: at least 1024 ?

  The SAP error message DB6PM778 DBCFG - APP_CTL_HEAP_SZ indicates that the application control heap size is set below the recommended minimum of 1024. This error typically arises in the context of database configuration, particularly when using SAP systems that rely on a database like SAP HANA, Oracle, or others.
  Cause:
  The error is caused by the application control heap size being configured to a value lower than the minimum required by SAP. The application control heap is a memory area used by the database for various operations, and insufficient memory can lead to performance issues or failures in processing requests.
  Solution:
  To resolve this error, you need to increase the application control heap size to at least 1024. The steps to do this can vary depending on the database you are using. Below are general steps for some common databases:
  For SAP HANA:
  
  Log in to the SAP HANA Studio or HANA Cockpit.
  Navigate to the Configuration section.
  Locate the parameter for APP_CTL_HEAP_SZ.
  Increase the value to at least 1024.
  Save the changes and restart the database if necessary.
  
  For Oracle:
  
  Log in to the Oracle database as a user with administrative privileges.
  Use the following SQL command to check the current setting:
  SHOW PARAMETER app_ctl_heap_sz;
  
  To change the parameter, use:
  ALTER SYSTEM SET app_ctl_heap_sz = 1024 SCOPE=BOTH;
  
  Restart the database if required.
  
  For Other Databases:
  
  Check the specific documentation for your database to find the equivalent parameter and how to change it.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to database configuration for your specific version of SAP. These notes often provide detailed instructions and best practices.
  Performance Monitoring: After making changes, monitor the performance of your SAP system to ensure that the changes have had the desired effect.
  Backup Configuration: Always ensure that you have a backup of your current configuration before making changes, in case you need to revert.
  
  Conclusion:
  Increasing the application control heap size to at least 1024 should resolve the DB6PM778 error. Always refer to the specific documentation for your database and SAP version for the most accurate and detailed instructions.