How To Fix COM_PRSEARCH104 - Database statement too complex (&1 tables). Maximum of 24 tables allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: COM_PRSEARCH - Messages for Search API

• Message number: 104

• Message text: Database statement too complex (&1 tables). Maximum of 24 tables allowed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message COM_PRSEARCH104 - Database statement too complex (&1 tables). Maximum of 24 tables allowed ?

  The SAP error message COM_PRSEARCH104 indicates that a database query is attempting to access more tables than the system allows. Specifically, the error states that the query is too complex because it involves more than 24 tables, which exceeds the maximum limit set by the database or the SAP system configuration.
  Cause:
  
  Complex Queries: The error typically arises when a query is constructed that joins or accesses more than 24 tables. This can happen in complex reports, custom ABAP programs, or when using certain transaction codes that generate complex SQL statements.
  Data Model Design: Sometimes, the underlying data model may require accessing many tables to retrieve the necessary information, leading to complex joins.
  Inefficient Query Design: Poorly designed queries or reports that do not filter data effectively can lead to unnecessary complexity.
  
  Solution:
  
  
  Optimize the Query:
  
  Review the SQL query or the ABAP code generating the query. Try to reduce the number of tables being accessed by:
  
  Removing unnecessary joins.
  Using subqueries or temporary tables to break down the query into simpler parts.
  Filtering data earlier in the query to reduce the number of tables involved.
  
  
  
  
  
  Use Views:
  
  If possible, create database views that encapsulate the logic of multiple tables. This can help simplify the main query and reduce the number of tables accessed directly.
  
  
  
  Check for Redundant Joins:
  
  Ensure that there are no redundant joins in the query. Sometimes, joins can be eliminated if the same data can be accessed through a different path.
  
  
  
  Review Data Model:
  
  If the data model is inherently complex, consider whether it can be simplified. This might involve redesigning how data is stored or accessed.
  
  
  
  Consult SAP Notes:
  
  Check for any relevant SAP Notes or updates that might address this issue. Sometimes, SAP provides patches or recommendations for specific scenarios.
  
  
  
  Increase the Limit (if applicable):
  
  In some cases, it may be possible to increase the limit of tables allowed in a query through configuration settings. However, this should be done with caution and typically requires consulting with SAP Basis or a system administrator.
  
  
  
  Related Information:
  
  Performance Considerations: Queries involving many tables can lead to performance issues. It's essential to ensure that queries are optimized not just for complexity but also for execution time.
  Database-Specific Limits: Different databases (e.g., Oracle, SQL Server, HANA) may have different limits on the number of tables that can be joined in a single query. Understanding the specific database in use can provide additional context for this error.
  ABAP Development: If you are developing in ABAP, consider using the SELECT statement efficiently, and leverage internal tables to handle data processing in memory rather than through complex SQL joins.
  
  By addressing the complexity of the query and optimizing the data access patterns, you can resolve the COM_PRSEARCH104 error and improve the overall performance of your SAP system.