How To Fix TH066 - end test of collision Handling

SAP Error Message - Details

• Message type: E = Error

• Message class: TH - Messages for Upgrade Repository Switch

• Message number: 066

• Message text: end test of collision Handling

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message TH066 - end test of collision Handling ?

  The SAP error message TH066, which states "End test of collision handling," typically occurs in the context of background job processing or when multiple processes are trying to access the same resource or data simultaneously. This error is related to the system's handling of concurrent processes and can arise in various scenarios, such as when jobs are scheduled to run at the same time or when there are conflicts in resource allocation.
  Cause:
  
  Concurrent Job Execution: Multiple background jobs are trying to access the same data or resource at the same time, leading to a collision.
  Lock Conflicts: The system may be trying to acquire a lock on a resource that is already locked by another process.
  Configuration Issues: Incorrect configuration of job scheduling or resource allocation can lead to collisions.
  System Performance: High system load or performance issues can exacerbate the problem, leading to timeouts or failures in job execution.
  
  Solution:
  
  Review Job Scheduling: Check the job scheduling to ensure that jobs that may conflict are not scheduled to run at the same time. Stagger the execution times of jobs that access the same resources.
  Analyze Lock Entries: Use transaction codes like SM12 to check for lock entries and identify which jobs or processes are holding locks. Release unnecessary locks if possible.
  Increase System Resources: If the system is under heavy load, consider increasing system resources (CPU, memory) to improve performance and reduce the likelihood of collisions.
  Adjust Configuration: Review and adjust the configuration settings related to job scheduling and resource management to minimize conflicts.
  Monitor System Performance: Use tools like ST03N or ST04 to monitor system performance and identify bottlenecks that may be contributing to the issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM37 (to monitor background jobs), SM12 (to view and manage locks), and SM21 (to check system logs).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review SAP documentation related to background processing and job scheduling for best practices and configuration guidelines.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.