How To Fix SDBALM096 - Proportion of log queue overflows to log queue inserts (in %)

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 096

• Message text: Proportion of log queue overflows to log queue inserts (in %)

Description
The system displays the proportion (in %) of the log queue overflows to
the log queue inserts since the last run of the data collector.
In the case of the first run of the data collector after a restart or
after the Alert Monitor is started, the system displays the proportion
since the restart.
Data Collector
<ZH>Collector B</>
(RZ20 -> SAP CCMS Technical Experts Monitors -> All Monitoring Contexts
,,-> <Name of the database connection> -> Collectors and Internals
-> Collectors -> Collector B)

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Preset runtime interval of Collector B: 15 minutes

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SDBALM096 - Proportion of log queue overflows to log queue inserts (in %) ?

  The SAP error message SDBALM096 indicates that the proportion of log queue overflows to log queue inserts has exceeded a certain threshold. This typically occurs in the context of database logging, where the system is unable to keep up with the volume of log entries being generated, leading to potential data loss or performance issues.
  Cause:
  
  High Volume of Transactions: A sudden increase in the number of transactions or changes being logged can overwhelm the log queue.
  Insufficient Log Queue Size: The log queue may not be sized appropriately for the volume of data being processed.
  Database Performance Issues: Slow database performance can lead to delays in processing log entries, causing the queue to fill up.
  Configuration Issues: Incorrect configuration settings for logging parameters can lead to inefficient logging behavior.
  Long-running Transactions: Transactions that take a long time to complete can hold up log processing, leading to overflow.
  
  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.
  Optimize Database Performance: Ensure that the database is properly tuned and optimized for performance. This may involve indexing, query optimization, or hardware upgrades.
  Monitor and Analyze Transactions: Use transaction monitoring tools to identify long-running transactions and optimize them.
  Adjust Logging Parameters: Review and adjust the logging parameters in the SAP system to better handle the expected load.
  Regular Maintenance: Perform regular database maintenance tasks, such as archiving old logs and cleaning up unnecessary data, to keep the system running smoothly.
  Review Application Logic: If specific applications are generating excessive logs, review the application logic to see if logging can be reduced or optimized.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to SDBALM096 for specific recommendations or patches that may address the issue.
  Transaction Codes: Use transaction codes like DB02 to monitor database performance and SM21 to check system logs for related errors.
  Performance Monitoring Tools: Utilize SAP's performance monitoring tools to analyze system performance and identify bottlenecks.
  Documentation: Refer to SAP documentation for best practices on database logging and performance tuning.
  
  By addressing the underlying causes and implementing the suggested solutions, you can mitigate the occurrence of the SDBALM096 error and improve the overall performance of your SAP system.