How To Fix DB6PM827 - Created Deadlock Monitor on system &1

SAP Error Message - Details

• Message type: E = Error

• Message class: DB6PM - DB2 UDB for UNIX, Windows: Performance Monitoring

• Message number: 827

• Message text: Created Deadlock Monitor on system &1

Self-Explanatory Message

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• What is the cause and solution for SAP error message DB6PM827 - Created Deadlock Monitor on system &1 ?

  The SAP error message DB6PM827, which indicates that a "Created Deadlock Monitor on system &1," typically relates to a deadlock situation in the database. A deadlock occurs when two or more transactions are waiting for each other to release locks, causing them to be stuck indefinitely. This can lead to performance issues and may require intervention to resolve.
  Cause:
  
  Concurrent Transactions: Multiple transactions are trying to access the same resources (e.g., database rows, tables) simultaneously, leading to a situation where each transaction is waiting for the other to release its locks.
  Locking Mechanisms: Inefficient locking strategies or long-running transactions can exacerbate the likelihood of deadlocks.
  Database Design: Poorly designed database schemas or queries that lead to excessive locking can contribute to deadlocks.
  High Load: Increased load on the database can lead to more frequent deadlocks as more transactions compete for the same resources.
  
  Solution:
  
  Deadlock Analysis: Use the deadlock monitor to analyze the deadlock situation. The monitor will provide information about the transactions involved in the deadlock, which can help identify the root cause.
  Optimize Transactions: Review and optimize the transactions that are causing deadlocks. This may involve:
  
  Reducing the duration of transactions.
  Ensuring that transactions acquire locks in a consistent order.
  Breaking large transactions into smaller ones.
  
  
  Database Configuration: Check the database configuration settings related to locking and isolation levels. Adjusting these settings may help reduce the occurrence of deadlocks.
  Indexing: Ensure that appropriate indexes are in place to speed up data access and reduce locking contention.
  Monitoring and Alerts: Set up monitoring and alerts for deadlocks to proactively manage and address them before they impact system performance.
  Database Updates: Ensure that the database and SAP system are up to date with the latest patches and updates, as these may contain fixes for known deadlock issues.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to deadlocks and performance issues for specific guidance and recommendations.
  Transaction Codes: Use transaction codes like ST22 (Dump Analysis) and SM21 (System Log) to gather more information about the deadlock situation.
  Database Documentation: Refer to the documentation for your specific database (e.g., Oracle, SQL Server, HANA) for best practices on managing locks and deadlocks.
  
  By following these steps, you can identify the cause of the deadlock, implement solutions to mitigate it, and improve the overall performance of your SAP system.