How To Fix RSCV540 - INFORMIX: No 'Update statistics' has been carried out yet for table &

SAP Error Message - Details

• Message type: E = Error

• Message class: RSCV - Analysis of BW objects (InfoCubes...)

• Message number: 540

• Message text: INFORMIX: No 'Update statistics' has been carried out yet for table &

What causes this issue?

No 'update statistics' run has been carried out yet for table &v1&. No
statistical information is, thus, in the database optimizer. This can
result in bad run schedules and thereby to a poor performance.

How to fix this error?

Build up current database statistics for table &v1&. For this, use a
repair routine, that is assigned to this analysis routine (function
<PF>Remove error </>in the transaction <ZH>RSRV</>).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSCV540 - INFORMIX: No 'Update statistics' has been carried out yet for table & ?

  The SAP error message RSCV540 related to INFORMIX indicates that the system has detected that no "Update statistics" operation has been performed for a specific table. This can lead to performance issues because the database optimizer relies on statistics to make informed decisions about how to execute queries efficiently.
  Cause:
  The error occurs when:
  
  The database statistics for the specified table are outdated or missing.
  The database optimizer does not have enough information about the data distribution in the table, which can lead to inefficient query execution plans.
  
  Solution:
  To resolve this error, you need to perform the following steps:
  
  
  Update Statistics:
  
  Execute the UPDATE STATISTICS command for the affected table in the INFORMIX database. This command collects and updates the statistics for the table, which helps the optimizer make better decisions.
  The command can typically be run as follows:
  UPDATE STATISTICS FOR TABLE <table_name>;
  
  Replace <table_name> with the actual name of the table mentioned in the error message.
  
  
  
  Schedule Regular Updates:
  
  It is a good practice to schedule regular updates of statistics, especially for tables that undergo frequent changes (inserts, updates, deletes). This can be done using a job scheduler or a maintenance plan.
  
  
  
  Monitor Performance:
  
  After updating the statistics, monitor the performance of the queries that were previously affected by the lack of statistics. Ensure that the performance has improved.
  
  
  
  Check Database Configuration:
  
  Ensure that the database configuration allows for automatic statistics updates if applicable. Some database systems can be configured to automatically update statistics based on certain thresholds.
  
  
  
  Related Information:
  
  Documentation: Refer to the official SAP and INFORMIX documentation for more details on managing database statistics.
  Performance Tuning: Regularly review and tune your database performance, including indexing strategies and query optimization.
  Database Maintenance: Implement a routine database maintenance plan that includes updating statistics, rebuilding indexes, and monitoring query performance.
  
  By following these steps, you should be able to resolve the RSCV540 error and improve the performance of your SAP system using the INFORMIX database.