How To Fix DB02116 - log_buffers. Size(KB) of redo log buffer in the SGA. Default: ><1024,320.

SAP Error Message - Details

• Message type: E = Error

• Message class: DB02 - For Oracle Component of the Database Monitor

• Message number: 116

• Message text: log_buffers. Size(KB) of redo log buffer in the SGA. Default: ><1024,320.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DB02116 - log_buffers. Size(KB) of redo log buffer in the SGA. Default: ><1024,320. ?

  The SAP error message DB02116 indicates an issue related to the size of the redo log buffer in the System Global Area (SGA) of the database. This error typically arises when the size of the redo log buffer is not configured correctly, which can lead to performance issues or even database errors.
  Cause:
  The error message DB02116 is triggered when the size of the redo log buffer is either set too low or is not within the recommended range. The default size for the redo log buffer is typically around 1024 KB (1 MB) or 320 KB, depending on the database configuration and version. If the size is set below the minimum threshold or is not optimal for the workload, it can lead to issues such as:
  
  Insufficient space for logging changes, which can cause delays in transaction processing.
  Increased contention for the redo log buffer, leading to performance degradation.
  Potential data loss in case of a failure if the buffer is not adequately sized.
  
  Solution:
  To resolve the DB02116 error, you need to adjust the size of the redo log buffer in the SGA. Here are the steps to do this:
  
  
  Check Current Configuration: Use the database management tools or SQL commands to check the current size of the redo log buffer. For example, in Oracle, you can query the V$SGA view.
  
  
  Modify the Size: Increase the size of the redo log buffer to a value that is within the recommended range. This can typically be done by modifying the database initialization parameters. For example, in Oracle, you can set the LOG_BUFFER parameter:
  ALTER SYSTEM SET LOG_BUFFER = <new_size_in_bytes> SCOPE=BOTH;
  Make sure to choose a size that is appropriate for your workload. A common recommendation is to set it to at least 1 MB (1024 KB) or higher based on the transaction volume.
  
  
  Restart the Database: In some cases, changes to the SGA parameters may require a database restart to take effect.
  
  
  Monitor Performance: After making the changes, monitor the database performance to ensure that the issue is resolved and that there are no further errors related to the redo log buffer.
  
  
  Related Information:
  
  Database Documentation: Refer to the specific database documentation (e.g., Oracle, SQL Server, etc.) for detailed instructions on configuring SGA parameters.
  Performance Tuning: Consider reviewing other SGA parameters and overall database performance tuning to ensure optimal configuration.
  SAP Notes: Check SAP Notes and Knowledge Base Articles for any specific recommendations or patches related to this error message.
  
  By following these steps, you should be able to resolve the DB02116 error and optimize the performance of your SAP system.