How To Fix RSCV520 - ORACLE: Table &1 has not yet been analyzed

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 520

• Message text: ORACLE: Table &1 has not yet been analyzed

What causes this issue?

Table &v1& has not yet been analyzed. There is, therefore, no
statistical information in the database optimizer. This can lead to bad
run schedules and, as a result, poor performance levels.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Analyze table &v1&. Use a repair routine that is assigned to this
analysis routine (function <PF>Remove error</> in 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 RSCV520 - ORACLE: Table &1 has not yet been analyzed ?

  The SAP error message RSCV520 indicates that a specific Oracle database table has not been analyzed. This message typically arises in the context of performance tuning and optimization, as the Oracle database relies on statistics to make informed decisions about query execution plans.
  Cause:
  The error occurs because the Oracle database table mentioned in the error message lacks the necessary statistics. These statistics are crucial for the Oracle optimizer to determine the most efficient way to execute SQL queries. If a table has not been analyzed, the optimizer may not have accurate information about the data distribution, leading to suboptimal query performance.
  Solution:
  To resolve this issue, you need to analyze the table in question to gather the necessary statistics. You can do this using the Oracle DBMS_STATS package or the ANALYZE command. Here are the steps to analyze the table:
  
  
  Using DBMS_STATS:
  This is the recommended method as it is more efficient and provides better statistics.
  EXEC DBMS_STATS.GATHER_TABLE_STATS('schema_name', 'table_name');
  
  
  Using ANALYZE Command:
  This is an older method and is generally not recommended for new applications.
  ANALYZE TABLE schema_name.table_name COMPUTE STATISTICS;
  
  
  Automate Statistics Gathering:
  You can also set up automatic statistics gathering in Oracle, which will periodically analyze tables and update statistics. This can be configured in the Oracle database settings.
  
  
  Related Information:
  
  Frequency of Analysis: It is a good practice to analyze tables regularly, especially after significant data changes (inserts, updates, deletes) or before running critical reports.
  Monitoring Statistics: You can monitor the statistics of your tables using views like USER_TAB_STATISTICS or DBA_TAB_STATISTICS.
  Performance Tuning: Regularly analyzing tables is part of overall database performance tuning. It helps ensure that the optimizer has the best possible information to work with.
  SAP Notes: Check SAP Notes related to performance tuning and database management for additional guidance specific to your SAP version and Oracle database.
  
  By analyzing the table, you should be able to resolve the RSCV520 error and improve the performance of your queries against that table.