How To Fix SDBALM192 - High number of log queue overflows (&1 > &2)

SAP Error Message - Details

• Message type: E = Error

• Message class: SDBALM - SAP DB and liveCache Alert Monitoring

• Message number: 192

• Message text: High number of log queue overflows (&1 > &2)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SDBALM192 - High number of log queue overflows (&1 > &2) ?

  The SAP error message SDBALM192 indicates that there is a high number of log queue overflows, where the actual number of log entries exceeds the defined limit. This can lead to issues in the system, such as data loss or performance degradation, as the system is unable to process all the log entries.
  Cause:
  
  High Transaction Volume: A sudden increase in transaction volume can lead to more log entries being generated than the system can handle.
  Configuration Issues: The log queue size may be set too low for the current workload.
  Long Running Transactions: If transactions take a long time to complete, they can accumulate in the log queue.
  Database Performance Issues: Slow database performance can lead to delays in processing log entries, causing the queue to overflow.
  Insufficient Resources: Lack of system resources (CPU, memory, I/O) can also contribute to the problem.
  
  Solution:
  
  
  Increase Log Queue Size: Adjust the configuration to increase the size of the log queue. This can be done in the SAP system settings.
  
  Use transaction RZ10 to change the profile parameters related to log queue size.
  Look for parameters like rdisp/log_queue_size and increase its value.
  
  
  
  Monitor and Optimize Transactions: Identify long-running transactions and optimize them to reduce their execution time.
  
  Use transaction ST05 (SQL Trace) or ST12 (Performance Analysis) to analyze performance bottlenecks.
  
  
  
  Database Tuning: Ensure that the database is properly tuned for performance. This may involve:
  
  Index optimization
  Query optimization
  Ensuring that the database has sufficient resources (CPU, memory, disk I/O).
  
  
  
  System Resource Allocation: Check the overall system resource allocation and ensure that the SAP application server has enough resources to handle the workload.
  
  Monitor CPU and memory usage using transaction SM50 or SM66.
  
  
  
  Regular Monitoring: Implement regular monitoring of the log queue and transaction performance to proactively address issues before they lead to overflows.
  
  Set up alerts for high log queue usage.
  
  
  
  Consult SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or patches related to this error.
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM21 (System Log) to check for related errors.
  SM37 (Job Monitoring) to see if there are any stuck jobs.
  ST22 (Dump Analysis) to check for any short dumps that may be related.
  
  
  
  SAP Documentation: Refer to the official SAP documentation for detailed information on log management and performance tuning.
  
  
  SAP Community: Engage with the SAP Community forums for insights and solutions shared by other users who may have faced similar issues.
  
  
  By addressing the underlying causes and implementing the suggested solutions, you can mitigate the risk of log queue overflows and improve the overall performance of your SAP system.