How To Fix AD561 - Caution: SELECT terminated after 100 runs

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 561

• Message text: Caution: SELECT terminated after 100 runs

What causes this issue?

No selection was made.

System Response

Only the first 100 entries are output.

How to fix this error?

To view all entries, enter a selection (e.g. '*') in any selection
field.

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD561 - Caution: SELECT terminated after 100 runs ?

  The SAP error message AD561, which states "Caution: SELECT terminated after 100 runs," typically occurs in the context of ABAP programming when a SELECT statement is executed too many times in a loop or when it exceeds a certain threshold of executions. This is a safeguard mechanism in SAP to prevent performance issues that can arise from executing a SELECT statement excessively.
  Cause:
  
  Inefficient Looping: The error often arises when a SELECT statement is placed inside a loop that iterates many times, leading to repeated database calls.
  High Volume of Data: If the SELECT statement is querying a large dataset or is not properly indexed, it can lead to performance degradation.
  Database Locking: Repeated SELECT statements can lead to database locks, which can further exacerbate performance issues.
  
  Solution:
  
  
  Optimize the Code:
  
  Move SELECT Outside the Loop: If possible, restructure your code to perform the SELECT statement outside of the loop. For example, fetch all necessary data in one go and then process it in memory.
  Use Internal Tables: Load the data into an internal table and then loop through the internal table instead of querying the database multiple times.
  Use JOINs: If applicable, consider using JOINs to fetch related data in a single query instead of multiple SELECT statements.
  
  
  
  Limit the Number of Executions:
  
  If the logic requires multiple SELECT statements, consider adding a condition to limit the number of executions or break the loop into smaller chunks.
  
  
  
  Check Database Performance:
  
  Ensure that the database tables being queried are properly indexed to improve performance.
  Analyze the execution plan of the SELECT statement to identify any potential bottlenecks.
  
  
  
  Use Buffering:
  
  If the data does not change frequently, consider using table buffering to reduce the number of database accesses.
  
  
  
  Related Information:
  
  ABAP Performance Tuning: Familiarize yourself with best practices for writing efficient ABAP code, including minimizing database calls and using appropriate data structures.
  SAP Notes: Check SAP Notes for any specific recommendations or patches related to this error message.
  Transaction ST05: Use the SQL Trace (transaction ST05) to analyze the performance of your SELECT statements and identify any inefficiencies.
  
  By addressing the underlying causes and optimizing your code, you can resolve the AD561 error and improve the performance of your SAP application.