How To Fix D3190 - Long running units of recovery reported by the database

SAP Error Message - Details

• Message type: E = Error

• Message class: D3 - CCMS - DB2 on OS390

• Message number: 190

• Message text: Long running units of recovery reported by the database

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message D3190 - Long running units of recovery reported by the database ?

  The SAP error message D3190, which indicates "Long running units of recovery reported by the database," typically arises in the context of database transactions that are taking longer than expected to complete. This can lead to performance issues and may affect the overall stability of the SAP system.
  Causes:
  
  Long-Running Transactions: Transactions that take an excessive amount of time to complete can lead to this error. This may be due to complex queries, large data volumes, or inefficient database operations.
  Lock Contention: If multiple transactions are trying to access the same data simultaneously, it can lead to locks that delay the completion of transactions.
  Database Performance Issues: Poor database performance due to insufficient resources (CPU, memory, I/O) or misconfigured database settings can contribute to long-running transactions.
  Network Latency: High latency in the network can also affect the time it takes for transactions to complete, especially in distributed environments.
  Deadlocks: Situations where two or more transactions are waiting for each other to release locks can lead to prolonged recovery times.
  
  Solutions:
  
  Analyze Long-Running Transactions: Use transaction monitoring tools to identify which transactions are taking too long. In SAP, you can use transaction codes like ST22 (Dump Analysis) and SM21 (System Log) to gather more information.
  Optimize Queries: Review and optimize SQL queries that are part of the long-running transactions. Ensure that indexes are used effectively and that the queries are not unnecessarily complex.
  Increase Database Resources: If the database is under-resourced, consider increasing CPU, memory, or I/O capacity to improve performance.
  Review Locking Mechanisms: Analyze the locking situation in the database. Use tools to monitor locks and identify any contention issues. You may need to adjust application logic to reduce lock contention.
  Database Configuration: Ensure that the database is properly configured for the workload it is handling. This includes settings related to memory allocation, connection pooling, and transaction log management.
  Regular Maintenance: Perform regular database maintenance tasks such as updating statistics, rebuilding indexes, and cleaning up old data to ensure optimal performance.
  Consult Database Logs: Check the database logs for any errors or warnings that might indicate underlying issues affecting performance.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to D3190 for any 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 performance tuning and transaction management.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have implemented.
  
  By addressing the underlying causes and implementing the suggested solutions, you can mitigate the occurrence of the D3190 error and improve the performance of your SAP system.