How To Fix RSDD_ZA436 - Returns a list of long-running threads of type 'request' and 'RFC'

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDD_ZA - Messages from TREX Aggregate Area

• Message number: 436

• Message text: Returns a list of long-running threads of type 'request' and 'RFC'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDD_ZA436 - Returns a list of long-running threads of type 'request' and 'RFC' ?

  The SAP error message RSDD_ZA436 indicates that there are long-running threads of type 'request' and 'RFC' (Remote Function Call) in the system. This can lead to performance issues, as these threads may be consuming resources and causing delays in processing.
  Cause:
  
  Long-Running Queries: Queries that take too long to execute can lead to long-running threads. This may be due to inefficient query design, large data volumes, or lack of proper indexing.
  Network Issues: Problems with network connectivity can cause delays in RFC calls, leading to long-running threads.
  System Resource Constraints: Insufficient CPU, memory, or I/O resources can cause threads to run longer than expected.
  Lock Contention: If multiple processes are trying to access the same resource, it can lead to delays and long-running threads.
  Background Jobs: Long-running background jobs that are not optimized can also contribute to this issue.
  
  Solution:
  
  Analyze Long-Running Threads: Use transaction codes like SM66 (Global Work Process Overview) or SM50 (Work Process Overview) to identify the specific threads that are running long.
  Optimize Queries: Review and optimize any long-running queries. This may involve:
  
  Adding appropriate indexes.
  Reducing the data volume being processed.
  Modifying the query logic for efficiency.
  
  
  Check Network Performance: Ensure that there are no network issues affecting RFC calls. This may involve checking network latency and bandwidth.
  Monitor System Resources: Use transaction ST03N (Workload Analysis) to monitor system performance and identify any resource bottlenecks.
  Review Background Jobs: Check for any long-running background jobs in transaction SM37 and optimize them if necessary.
  Increase System Resources: If the system is consistently under heavy load, consider increasing CPU, memory, or I/O capacity.
  Lock Management: Investigate and resolve any lock contention issues. Use transaction SM12 to check for locks and release them if necessary.
  
  Related Information:
  
  Transaction Codes:
  
  SM66: Global Work Process Overview
  SM50: Work Process Overview
  ST03N: Workload Analysis
  SM37: Job Monitoring
  SM12: Lock Entries
  
  
  Performance Tuning: Regularly perform performance tuning and monitoring to prevent long-running threads from becoming a recurring issue.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to long-running threads or performance optimization.
  
  By following these steps, you can identify the root cause of the long-running threads and implement appropriate solutions to mitigate the issue.