How To Fix SMMSS_ALERTS084 - This alert shows the seconds blocked of the oldest blocked spid

SAP Error Message - Details

• Message type: E = Error

• Message class: SMMSS_ALERTS - Message class for MSSQL rz20 messages

• Message number: 084

• Message text: This alert shows the seconds blocked of the oldest blocked spid

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 SMMSS_ALERTS084 - This alert shows the seconds blocked of the oldest blocked spid ?

  The SAP error message SMMSS_ALERTS084 indicates that there is a performance issue related to blocked sessions in the database. Specifically, this alert shows the number of seconds that the oldest blocked session (SPID) has been blocked. This can lead to performance degradation and may affect the overall functioning of the SAP system.
  Cause
  The primary causes of this alert can include:
  
  Long-Running Transactions: A transaction that takes too long to complete can block other transactions.
  Deadlocks: Situations where two or more sessions are waiting for each other to release resources, causing a standstill.
  Resource Contention: Multiple sessions trying to access the same resource (like a table or row) simultaneously can lead to blocking.
  Inefficient Queries: Poorly optimized SQL queries can take longer to execute, leading to blocking.
  Locks Held by Other Sessions: If a session holds a lock on a resource that another session needs, it can cause blocking.
  
  Solution
  To resolve the issue indicated by the SMMSS_ALERTS084 alert, consider the following steps:
  
  
  Identify the Blocked Session: Use database management tools or SQL queries to identify the SPID that is being blocked and the SPID that is causing the block.
  For example, in SQL Server, you can use:
  SELECT * FROM sys.dm_exec_requests WHERE blocking_session_id <> 0;
  
  
  Analyze the Blocking Session: Check the SQL statements being executed by the blocking session. You can use:
  SELECT * FROM sys.dm_exec_sql_text(sql_handle);
  
  
  Kill the Blocking Session: If the blocking session is not critical, you may consider terminating it using the KILL command. However, be cautious as this can lead to data loss or corruption if the session is in the middle of a transaction.
  
  
  Optimize Queries: Review and optimize the queries that are causing the blocks. This may involve adding indexes, rewriting queries, or changing the transaction isolation level.
  
  
  Increase Resources: If resource contention is a frequent issue, consider increasing the resources available to the database (CPU, memory, etc.).
  
  
  Monitor and Tune Performance: Regularly monitor the performance of your database and tune it as necessary to prevent future blocking issues.
  
  
  Review Application Logic: Ensure that the application logic is designed to minimize long-running transactions and to handle exceptions properly.
  
  
  Related Information
  
  Database Monitoring Tools: Use tools like SAP Solution Manager, SQL Server Management Studio, or other database monitoring tools to keep an eye on performance metrics.
  SAP Notes: Check SAP Notes for any known issues or patches related to performance and blocking.
  Documentation: Refer to the official SAP documentation for best practices on database performance tuning and transaction management.
  
  By following these steps, you should be able to address the issues related to the SMMSS_ALERTS084 alert and improve the performance of your SAP system.