How To Fix RS_DB_DB2131 - Parallel degree reduced from &1 to &2 due to resource limitation

SAP Error Message - Details

• Message type: E = Error

• Message class: RS_DB_DB2 - Messages for DB2-z/OS Implementation

• Message number: 131

• Message text: Parallel degree reduced from &1 to &2 due to resource limitation

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RS_DB_DB2131 - Parallel degree reduced from &1 to &2 due to resource limitation ?

  The SAP error message RS_DB_DB2131 indicates that the parallel degree of a database operation has been reduced due to resource limitations. This typically occurs during data processing tasks such as data extraction, reporting, or data loading, where the system attempts to utilize multiple parallel processes to improve performance. However, if the system detects that resources (like CPU, memory, or I/O capacity) are insufficient to support the requested level of parallelism, it will automatically reduce the parallel degree to ensure stability and performance.
  Cause:
  
  Resource Limitations: The most common cause is that the database server or the application server does not have enough resources (CPU, memory, or I/O bandwidth) to handle the requested parallel degree.
  Database Configuration: The database may have configuration settings that limit the maximum degree of parallelism.
  System Load: High system load or contention for resources from other processes can lead to this error.
  Database Locks: If there are locks on the database that prevent parallel execution, this can also trigger the error.
  
  Solution:
  
  Monitor System Resources: Check the CPU, memory, and I/O usage on the database server and application server. If resources are maxed out, consider upgrading hardware or optimizing existing workloads.
  Adjust Parallelism Settings: Review and adjust the database configuration settings related to parallel processing. This may involve increasing the maximum allowed parallel degree if the system can handle it.
  Optimize Queries: Analyze the queries or processes that are running when the error occurs. Optimizing these queries can reduce resource consumption.
  Reduce Concurrent Workloads: If possible, reduce the number of concurrent processes running on the system to free up resources.
  Database Maintenance: Perform regular database maintenance tasks such as updating statistics, rebuilding indexes, and cleaning up old data to improve performance.
  Check for Locks: Investigate if there are any locks or long-running transactions that could be causing resource contention.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to this error message for specific recommendations or patches that may address the issue.
  Database Documentation: Refer to the documentation for your specific database (e.g., Oracle, SQL Server, HANA) for best practices on configuring parallel processing.
  Performance Monitoring Tools: Utilize performance monitoring tools to gain insights into resource usage and identify bottlenecks.
  SAP Community: Engage with the SAP Community forums for additional insights and experiences from other users who may have encountered similar issues.
  
  By addressing the underlying resource limitations and optimizing the system configuration, you can mitigate the occurrence of this error and improve overall performance.