How To Fix SMMSS_ALERTS068 - This alert shows the % of total time used by a single statement

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 068

• Message text: This alert shows the % of total time used by a single statement

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SMMSS_ALERTS068 - This alert shows the % of total time used by a single statement ?

  The SAP error message SMMSS_ALERTS068 indicates that a specific SQL statement is consuming a significant percentage of the total execution time in your SAP system. This alert is part of the SAP Performance Management tools, which help identify performance bottlenecks in the database layer.
  Cause:
  The alert is triggered when a single SQL statement is taking up a large portion of the total execution time. This can be caused by several factors, including:
  
  Inefficient SQL Queries: The SQL statement may not be optimized, leading to longer execution times.
  Lack of Indexes: Missing or poorly designed indexes can slow down query performance.
  High Data Volume: The query may be processing a large amount of data, which can increase execution time.
  Database Locks: Contention for database resources can lead to delays in query execution.
  Poor Database Design: Issues with the underlying database schema can lead to inefficient data retrieval.
  Statistics Outdated: If the database statistics are not up to date, the query optimizer may not choose the best execution plan.
  
  Solution:
  To address the issue indicated by the SMMSS_ALERTS068 alert, consider the following steps:
  
  Analyze the SQL Statement: Use tools like SQL Trace (ST05) or SQL Performance Analysis to analyze the execution plan and identify bottlenecks.
  Optimize the Query: Rewrite the SQL statement to improve its efficiency. This may involve simplifying the query, reducing the number of joins, or using more efficient filtering.
  Create or Update Indexes: Ensure that appropriate indexes are in place for the columns used in WHERE clauses, JOIN conditions, and ORDER BY clauses.
  Update Database Statistics: Run the necessary commands to update statistics for the affected tables to help the optimizer make better decisions.
  Monitor Database Performance: Use transaction codes like ST04 (Database Performance Analysis) to monitor overall database performance and identify other potential issues.
  Review Database Configuration: Ensure that the database is configured optimally for your workload, including memory allocation and connection settings.
  Consult with Database Administrators: If necessary, work with your DBA team to further investigate and resolve underlying database issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as ST04 (Database Performance Analysis), ST05 (SQL Trace), and ST12 (Performance Analysis).
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or patches related to performance issues.
  Performance Tuning Guides: Refer to SAP's performance tuning guides for best practices on optimizing SQL queries and database performance.
  Monitoring Tools: Consider using SAP Solution Manager or other monitoring tools to keep track of system performance and alerts.
  
  By following these steps, you can effectively address the performance issues indicated by the SMMSS_ALERTS068 alert and improve the overall efficiency of your SAP system.