How To Fix SMMSS_ALERTS079 - &1 kB/sec read for DB

SAP Error Message - Details

• Message type: E = Error

• Message class: SMMSS_ALERTS - Message class for MSSQL rz20 messages

• Message number: 079

• Message text: &1 kB/sec read for DB

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SMMSS_ALERTS079 - &1 kB/sec read for DB ?

  The SAP error message SMMSS_ALERTS079 typically indicates that the database is experiencing high read activity, which can lead to performance issues. The message format suggests that it is reporting a specific read rate (in kB/sec) for the database.
  Cause:
  
  
  High Database Load: The database may be under heavy load due to numerous read operations, which could be caused by:
  
  High transaction volume.
  Inefficient queries or reports that are reading large amounts of data.
  Background jobs or batch processes that are consuming significant resources.
  
  
  
  Configuration Issues: The database or SAP system may not be optimally configured for the workload, leading to performance bottlenecks.
  
  
  Hardware Limitations: Insufficient hardware resources (CPU, memory, disk I/O) can also contribute to high read rates and slow performance.
  
  
  Indexing Issues: Lack of proper indexing on database tables can lead to inefficient data retrieval, causing higher read rates.
  
  
  Solution:
  
  
  Analyze Database Performance:
  
  Use database monitoring tools to analyze the performance metrics and identify the queries or processes that are causing high read activity.
  Check for long-running queries and optimize them.
  
  
  
  Optimize Queries:
  
  Review and optimize SQL queries to ensure they are efficient. This may involve rewriting queries, adding indexes, or changing the way data is accessed.
  
  
  
  Review Background Jobs:
  
  Check for any background jobs or batch processes that may be running during peak times and consuming excessive resources. Consider rescheduling them to off-peak hours.
  
  
  
  Database Configuration:
  
  Review the database configuration settings to ensure they are optimized for the workload. This may include adjusting memory allocation, buffer sizes, and other performance-related parameters.
  
  
  
  Hardware Upgrade:
  
  If the database consistently experiences high load, consider upgrading hardware resources (CPU, memory, storage) to better handle the workload.
  
  
  
  Indexing:
  
  Ensure that appropriate indexes are in place for frequently accessed tables to improve read performance.
  
  
  
  SAP Notes and Support:
  
  Check for any relevant SAP Notes that may address this specific error or provide guidance on performance tuning for your version of SAP.
  
  
  
  Related Information:
  
  Monitoring Tools: Utilize SAP's transaction codes like ST03N (Workload Analysis), ST04 (Database Performance), and ST06 (Operating System Monitor) to gather insights into system performance.
  Database-Specific Tools: Depending on the database (e.g., Oracle, SQL Server, HANA), use specific monitoring tools provided by the database vendor to analyze performance.
  SAP Community: Engage with the SAP Community or forums for additional insights and shared experiences from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the root cause of the high read rates and implement appropriate solutions to mitigate the issue.