How To Fix D4535 - Database: Total space wasted (KB)

SAP Error Message - Details

• Message type: E = Error

• Message class: D4 - DB2/400 specific messages

• Message number: 535

• Message text: Database: Total space wasted (KB)

Self-Explanatory Message

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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 D4535 - Database: Total space wasted (KB) ?

  The SAP error message D4535, which indicates "Database: Total space wasted (KB)," typically relates to issues with database space management. This message is a warning that there is a certain amount of space in the database that is not being utilized effectively, which can lead to inefficient use of storage resources.
  Cause:
  
  Fragmentation: Over time, as data is inserted, updated, and deleted, the database can become fragmented. This fragmentation can lead to wasted space.
  Deleted Records: When records are deleted, the space they occupied may not be reclaimed immediately, leading to wasted space.
  Inefficient Data Types: Using data types that are larger than necessary can also contribute to wasted space.
  Table Structure: Poorly designed table structures or indexes can lead to inefficient use of space.
  Database Configuration: Incorrect database configuration settings can lead to inefficient space allocation.
  
  Solution:
  
  Database Maintenance: Regularly perform database maintenance tasks such as reorganization or defragmentation to reclaim wasted space.
  Data Archiving: Implement data archiving strategies to move old or unused data to separate storage, freeing up space in the main database.
  Review Table Structures: Analyze and optimize table structures and indexes to ensure they are designed efficiently.
  Adjust Data Types: Review the data types used in your tables and adjust them to be more space-efficient where possible.
  Monitor Database Growth: Use monitoring tools to keep track of database growth and space usage, allowing for proactive management.
  Database Configuration: Review and adjust database configuration settings to optimize space usage.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like DB02 (Database Performance Analysis) to analyze database space usage and identify areas of concern.
  SAP Notes: Check SAP Notes related to database performance and space management for specific recommendations and best practices.
  Database-Specific Tools: Depending on the database system (e.g., Oracle, SQL Server, HANA), there may be specific tools and commands available to analyze and manage space usage.
  
  Conclusion:
  Addressing the D4535 error involves a combination of regular maintenance, optimization of data structures, and proactive monitoring. By implementing these strategies, you can reduce wasted space in your SAP database and improve overall performance.