How To Fix D3602 - Several deadlocks have occurred

SAP Error Message - Details

• Message type: E = Error

• Message class: D3 - CCMS - DB2 on OS390

• Message number: 602

• Message text: Several deadlocks have occurred

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message D3602 - Several deadlocks have occurred ?

  The SAP error message D3602, which indicates that "Several deadlocks have occurred," typically arises in the context of database operations where multiple transactions are trying to access the same resources in a way that creates a cycle of dependencies, preventing any of the transactions from proceeding. This can lead to performance issues and can affect the overall stability of the SAP system.
  Causes of D3602 Error
  
  Concurrent Transactions: Multiple users or processes trying to access the same data simultaneously can lead to deadlocks.
  Long-Running Transactions: Transactions that take a long time to complete can hold locks on resources longer than necessary, increasing the chance of deadlocks.
  Locking Strategy: Inefficient locking strategies or inappropriate isolation levels can contribute to deadlocks.
  Database Design: Poorly designed database schemas or indexes can lead to contention for resources.
  Application Logic: Inefficient application logic that leads to unnecessary locking of resources.
  
  Solutions to D3602 Error
  
  
  Analyze Deadlock Situations:
  
  Use transaction codes like SM21 (System Log) and ST22 (Dump Analysis) to analyze the logs for deadlock occurrences.
  Check the database logs for deadlock information.
  
  
  
  Optimize Transactions:
  
  Review and optimize long-running transactions to ensure they complete as quickly as possible.
  Break down large transactions into smaller, more manageable ones.
  
  
  
  Adjust Locking Mechanisms:
  
  Review the locking strategy used in your application. Consider using optimistic locking where appropriate.
  Ensure that locks are released as soon as they are no longer needed.
  
  
  
  Database Tuning:
  
  Optimize database performance by tuning queries and ensuring that indexes are used effectively.
  Consider adjusting the isolation levels of transactions if applicable.
  
  
  
  Implement Retry Logic:
  
  Implement retry logic in your application to handle deadlocks gracefully. If a deadlock occurs, the application can retry the transaction after a short delay.
  
  
  
  Monitor and Analyze:
  
  Continuously monitor the system for deadlocks and analyze patterns to identify problematic areas.
  Use tools like SAP Solution Manager for monitoring and performance analysis.
  
  
  
  Related Information
  
  SAP Notes: Check SAP Notes related to deadlocks and performance issues. SAP frequently updates its knowledge base with solutions and best practices.
  Database Documentation: Refer to the documentation for the specific database you are using (e.g., HANA, Oracle, SQL Server) for best practices on handling deadlocks.
  Performance Tuning: Consider engaging with SAP Basis or database administrators for performance tuning and optimization strategies.
  
  By addressing the underlying causes and implementing the suggested solutions, you can reduce the occurrence of deadlocks and improve the overall performance and stability of your SAP system.