How To Fix DB6PM830 - Deadlock Monitor on system &1 has been dropped

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 830

• Message text: Deadlock Monitor on system &1 has been dropped

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DB6PM830 - Deadlock Monitor on system &1 has been dropped ?

  The SAP error message DB6PM830 indicates that the Deadlock Monitor for a specific database system (denoted by &1) has been dropped. This typically occurs in the context of database management, where deadlocks can happen when two or more transactions are waiting for each other to release locks, leading to a situation where none of the transactions can proceed.
  Cause:
  
  Deadlock Situation: The primary cause of this error is a deadlock situation in the database, where two or more processes are waiting indefinitely for resources held by each other.
  Resource Contention: High contention for database resources (like locks on tables or rows) can lead to deadlocks.
  Long-Running Transactions: Transactions that take a long time to complete can increase the likelihood of deadlocks.
  Database Configuration: Improper database configuration or lack of optimization can also contribute to deadlocks.
  
  Solution:
  
  Analyze Deadlock Logs: Check the database logs to identify the transactions involved in the deadlock. This can help you understand the root cause.
  Optimize SQL Queries: Review and optimize the SQL queries involved in the deadlock. Ensure that they are efficient and do not hold locks longer than necessary.
  Transaction Management: Break down long-running transactions into smaller, more manageable ones to reduce the time locks are held.
  Locking Strategy: Implement a consistent locking strategy. For example, always acquire locks in the same order to prevent circular wait conditions.
  Database Configuration: Review and adjust database configuration settings to improve performance and reduce contention.
  Monitor and Tune: Continuously monitor the database for deadlocks and tune the system as necessary. Use tools provided by the database management system to analyze and resolve deadlocks.
  
  Related Information:
  
  Deadlock Detection: Most modern databases have built-in mechanisms to detect deadlocks and automatically resolve them by terminating one of the transactions involved.
  SAP Notes: Check SAP Notes related to deadlocks and performance tuning for specific recommendations tailored to your SAP environment.
  Database Documentation: Refer to the documentation of the specific database you are using (e.g., Oracle, SQL Server, HANA) for best practices on managing deadlocks.
  
  By addressing the underlying causes of deadlocks and implementing best practices for transaction management and database configuration, you can reduce the occurrence of the DB6PM830 error and improve overall system performance.