How To Fix DB6PM363 - No high-water mark reduction in process for tablespace &1

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 363

• Message text: No high-water mark reduction in process for tablespace &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DB6PM363 - No high-water mark reduction in process for tablespace &1 ?

  The SAP error message DB6PM363 indicates that there is no high-water mark reduction process currently running for a specified tablespace in the database. This message is typically related to the database management system (DBMS) and can occur in environments using databases like Oracle, DB2, or others that support SAP.
  Cause:
  The high-water mark (HWM) in a database refers to the maximum extent of data that has been allocated in a tablespace. When data is deleted or moved, the space may not be released back to the operating system, leading to inefficient use of storage. The error message suggests that the database is not currently performing any operations to reduce the high-water mark for the specified tablespace, which can lead to wasted space and potential performance issues.
  Solution:
  To address this issue, you can take the following steps:
  
  
  Check Tablespace Usage:
  
  Use database management tools or SQL queries to check the current usage of the tablespace. This will help you understand how much space is being used and how much is wasted.
  
  
  
  Perform High-Water Mark Reduction:
  
  Depending on the database system, you may need to perform specific operations to reduce the high-water mark. For example:
  
  In Oracle, you can use the SHRINK SPACE command on the tablespace or specific segments.
  In DB2, you might need to reorganize the tables or use the REORG command.
  
  
  
  
  
  Monitor Background Jobs:
  
  Ensure that any scheduled jobs or background processes that are responsible for managing tablespace and high-water mark reduction are running correctly. If they are not, you may need to troubleshoot or restart them.
  
  
  
  Database Maintenance:
  
  Regularly perform database maintenance tasks, such as reorganizing tables, rebuilding indexes, and purging old data, to help manage space effectively.
  
  
  
  Consult Documentation:
  
  Refer to the specific database documentation for detailed instructions on managing tablespaces and high-water marks, as the commands and procedures can vary between different database systems.
  
  
  
  Contact Support:
  
  If the issue persists or if you are unsure about performing these operations, consider reaching out to your database administrator or SAP support for assistance.
  
  
  
  Related Information:
  
  Database Documentation: Always refer to the official documentation for your specific database system (e.g., Oracle, DB2) for the most accurate and detailed instructions.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide additional guidance.
  Performance Monitoring: Implement monitoring tools to keep track of tablespace usage and performance metrics to proactively manage high-water marks in the future.
  
  By following these steps, you should be able to resolve the DB6PM363 error and optimize the use of your database tablespaces.