How To Fix SDBALM172 - High usage rate in the data cache (&1&3 > &2&3)

SAP Error Message - Details

• Message type: E = Error

• Message class: SDBALM - SAP DB and liveCache Alert Monitoring

• Message number: 172

• Message text: High usage rate in the data cache (&1&3 > &2&3)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SDBALM172 - High usage rate in the data cache (&1&3 > &2&3) ?

  The SAP error message SDBALM172 indicates that there is a high usage rate in the data cache, which can lead to performance issues in the system. This message typically includes parameters that specify the current usage and the threshold values, such as:
  
  &1: Current usage rate
  &2: Maximum allowed usage rate
  &3: Unit of measurement (e.g., KB, MB)
  
  Cause
  The high usage rate in the data cache can be caused by several factors, including:
  
  Increased Data Volume: A significant increase in the amount of data being processed or stored in the cache.
  Inefficient Queries: Poorly optimized queries that require excessive data retrieval and caching.
  Configuration Issues: Incorrect configuration settings for the data cache size or parameters.
  High User Load: A sudden increase in the number of users or transactions that require data access.
  Insufficient Hardware Resources: Limited memory or CPU resources that cannot handle the current workload.
  
  Solution
  To address the high usage rate in the data cache, consider the following solutions:
  
  
  Monitor and Analyze Cache Usage:
  
  Use transaction codes like ST02 (Tune Summary) to monitor the data cache and identify which areas are consuming the most resources.
  Analyze the workload and identify any specific transactions or queries that are causing high cache usage.
  
  
  
  Optimize Queries:
  
  Review and optimize SQL queries to reduce the amount of data being cached.
  Implement proper indexing to improve query performance.
  
  
  
  Adjust Cache Configuration:
  
  Increase the size of the data cache if the current configuration is insufficient. This can be done in the SAP profile parameters (e.g., abap/heap_area_dia, abap/heap_area_nondia).
  Ensure that the cache parameters are set appropriately for your system's workload.
  
  
  
  Review System Resources:
  
  Check the system's hardware resources (CPU, memory) to ensure they are adequate for the current workload.
  Consider upgrading hardware if necessary.
  
  
  
  Implement Load Balancing:
  
  If applicable, distribute the load across multiple application servers to reduce the pressure on a single server's cache.
  
  
  
  Regular Maintenance:
  
  Perform regular database maintenance tasks, such as archiving old data, to reduce the overall data volume.
  
  
  
  Related Information
  
  Transaction Codes: Use ST02 for monitoring buffer statistics, SM12 for checking locks, and SM21 for system logs.
  SAP Notes: Check for relevant SAP Notes that may provide additional guidance or patches related to cache management.
  Documentation: Refer to SAP documentation for best practices on performance tuning and cache management.
  
  By following these steps, you should be able to mitigate the high usage rate in the data cache and improve the overall performance of your SAP system.