How To Fix DB11072 - Oracle redo log buffer: number of entries per redo log space request

SAP Error Message - Details

• Message type: E = Error

• Message class: DB11 - Oracle Monitor: messages

• Message number: 072

• Message text: Oracle redo log buffer: number of entries per redo log space request

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DB11072 - Oracle redo log buffer: number of entries per redo log space request ?

  The SAP error message DB11072 related to Oracle databases typically indicates an issue with the redo log buffer, specifically concerning the number of entries per redo log space request. This error can arise when the database is unable to efficiently manage the redo log entries, which are crucial for maintaining data integrity and supporting recovery operations.
  Cause:
  
  High Transaction Volume: A high volume of transactions can lead to an increased number of redo log entries being generated, which may exceed the capacity of the redo log buffer.
  Insufficient Redo Log Buffer Size: The size of the redo log buffer may be too small to accommodate the number of entries being generated, leading to contention and delays.
  Inefficient SQL Statements: Poorly optimized SQL statements can generate excessive redo log entries, contributing to the problem.
  Database Configuration Issues: Incorrect configuration settings for the Oracle database can also lead to this error.
  
  Solution:
  
  
  Increase Redo Log Buffer Size: 
  
  You can increase the size of the redo log buffer by modifying the LOG_BUFFER parameter in the Oracle database. This can be done using the following SQL command:
  ALTER SYSTEM SET LOG_BUFFER = <new_size> SCOPE=BOTH;
  
  Make sure to choose an appropriate size based on your workload and performance requirements.
  
  
  
  Optimize SQL Statements: 
  
  Review and optimize SQL queries to reduce the number of redo log entries generated. This can include using bulk operations, avoiding unnecessary updates, and ensuring that indexes are used effectively.
  
  
  
  Monitor and Tune Database Performance: 
  
  Use Oracle's performance monitoring tools to identify bottlenecks and tune the database configuration. Look for high redo generation rates and adjust accordingly.
  
  
  
  Check for Long-Running Transactions: 
  
  Long-running transactions can hold onto redo log space longer than necessary. Review and optimize transaction management to ensure that transactions are kept as short as possible.
  
  
  
  Review Redo Log Configuration: 
  
  Ensure that the redo log files are properly sized and configured. Consider adding additional redo log groups or members if necessary.
  
  
  
  Related Information:
  
  Oracle Documentation: Refer to Oracle's official documentation for detailed information on managing redo logs and performance tuning.
  SAP Notes: Check SAP Notes for any specific recommendations or patches related to this error message.
  Monitoring Tools: Utilize Oracle Enterprise Manager or other monitoring tools to keep an eye on redo log usage and performance metrics.
  
  By addressing the underlying causes and implementing the suggested solutions, you should be able to resolve the DB11072 error and improve the performance of your SAP system running on Oracle.