How To Fix RS_DB_DB6035 - DB2/LUW: MDC memory consumption (estimated)

SAP Error Message - Details

• Message type: E = Error

• Message class: RS_DB_DB6 - DB6-Specific Messages in SAP BW

• Message number: 035

• Message text: DB2/LUW: MDC memory consumption (estimated)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RS_DB_DB6035 - DB2/LUW: MDC memory consumption (estimated) ?

  The SAP error message RS_DB_DB6035 related to DB2/LUW (Linux, Unix, Windows) indicates an issue with memory consumption in a Multi-Dimensional Clustering (MDC) environment. This error typically arises when the database is consuming more memory than expected, which can lead to performance issues or even system instability.
  Cause:
  
  
  High Memory Usage: The error suggests that the memory consumption of the MDC is estimated to be high, which could be due to various factors such as:
  
  Large datasets being processed.
  Inefficient queries or lack of proper indexing.
  Insufficient memory allocation for the database.
  High concurrency or workload on the database.
  
  
  
  Configuration Issues: The database configuration settings may not be optimized for the workload, leading to excessive memory usage.
  
  
  Database Maintenance: Lack of regular maintenance tasks such as reorganization of tables or statistics updates can lead to inefficient memory usage.
  
  
  Solution:
  
  
  Monitor Memory Usage: Use DB2 monitoring tools to analyze memory consumption and identify the queries or processes that are consuming excessive memory.
  
  
  Optimize Queries: Review and optimize SQL queries to ensure they are efficient. This may involve:
  
  Adding or modifying indexes.
  Avoiding Cartesian joins.
  Reducing the size of result sets.
  
  
  
  Adjust Configuration Settings: Review and adjust DB2 configuration parameters related to memory allocation. Key parameters to consider include:
  
  DBHEAP: The maximum heap size for the database.
  SORTHEAP: The maximum heap size for sorting operations.
  DSSIZE: The size of the database shared memory.
  
  
  
  Database Maintenance: Perform regular maintenance tasks such as:
  
  Running the RUNSTATS command to update statistics.
  Reorganizing tables to improve performance.
  Cleaning up old or unnecessary data.
  
  
  
  Increase System Resources: If the workload has increased, consider increasing the physical memory available to the database server.
  
  
  Consult Documentation: Refer to the official IBM DB2 documentation for specific guidelines on memory management and optimization.
  
  
  Related Information:
  
  DB2 Documentation: IBM provides extensive documentation on DB2 performance tuning and memory management.
  SAP Notes: Check SAP Notes for any specific recommendations or patches related to this error message.
  Performance Monitoring Tools: Utilize tools like IBM Data Studio or SAP Solution Manager to monitor and analyze database performance.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage with SAP support or a database administrator with expertise in DB2 to further diagnose and resolve the issue.