How To Fix CNV_IUUC_MULTI_LOG018 - The number of generated logging tables exceedes limit

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_IUUC_MULTI_LOG - multi logtab use

• Message number: 018

• Message text: The number of generated logging tables exceedes limit

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_IUUC_MULTI_LOG018 - The number of generated logging tables exceedes limit ?

  The SAP error message CNV_IUUC_MULTI_LOG018 indicates that the number of generated logging tables has exceeded a predefined limit during a data migration or transformation process, typically associated with the SAP Landscape Transformation (SLT) or SAP Data Services.
  Cause:
  This error usually occurs when:
  
  Excessive Logging Tables: The system has created more logging tables than the maximum allowed limit. This can happen if there are many data transformation or migration jobs running simultaneously or if the logging mechanism is not properly managed.
  Configuration Limits: The configuration settings for logging tables may be set too low, leading to this error when the actual usage exceeds the configured limits.
  Data Volume: A large volume of data being processed can lead to the creation of many logging tables, especially if the data is being transformed or replicated in a complex manner.
  
  Solution:
  To resolve this issue, you can take the following steps:
  
  
  Check Current Logging Tables: Review the existing logging tables in the database to see how many are currently in use. You can do this by querying the relevant database schema.
  
  
  Increase the Limit: If possible, adjust the configuration settings to increase the limit for logging tables. This may involve changing parameters in the SLT or Data Services configuration.
  
  
  Cleanup Unused Tables: If there are old or unused logging tables, consider cleaning them up to free up space and reduce the count. Ensure that you have backups and that it is safe to delete these tables.
  
  
  Optimize Data Migration Jobs: Review the data migration or transformation jobs to see if they can be optimized to reduce the number of logging tables created. This may involve batching data or reducing the complexity of transformations.
  
  
  Monitor and Manage Logging: Implement monitoring to keep track of the number of logging tables being created and manage them proactively to avoid hitting the limit in the future.
  
  
  Consult SAP Documentation: Refer to the official SAP documentation for specific configuration settings related to logging tables and limits. This can provide guidance on best practices and recommended settings.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  SLT Documentation: Review the SAP Landscape Transformation documentation for insights on logging behavior and configuration.
  Performance Tuning: Consider performance tuning of your data migration processes to minimize the number of logging tables generated.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.