How To Fix IUUC_CLOG_CORE120 - Size of Read Portion

SAP Error Message - Details

• Message type: E = Error

• Message class: IUUC_CLOG_CORE - SLT Change Log Messages

• Message number: 120

• Message text: Size of Read Portion

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message IUUC_CLOG_CORE120 - Size of Read Portion ?

  The SAP error message IUUC_CLOG_CORE120, which indicates "Size of Read Portion," typically occurs in the context of SAP Landscape Transformation (SLT) replication. This error is related to the size of the data being processed during the replication process, particularly when reading data from the source system.
  Cause:
  
  Data Volume: The error often arises when the volume of data being read exceeds the configured limits for the read portion size. This can happen if there are large tables or if a significant amount of data is being replicated at once.
  Configuration Settings: The settings for the read portion size in the SLT configuration may not be optimized for the current data load.
  Performance Issues: If the source system is under heavy load or if there are performance issues, it may not be able to handle the data read requests efficiently.
  
  Solution:
  
  
  Adjust Read Portion Size:
  
  You can adjust the read portion size in the SLT configuration. This is typically done in the SLT configuration settings under the "Replication Settings" or "Performance" section. Increasing the read portion size may help accommodate larger data volumes.
  
  
  
  Monitor Data Volume:
  
  Monitor the data volume being replicated and consider breaking it down into smaller chunks if possible. This can help prevent overwhelming the system.
  
  
  
  Check System Performance:
  
  Ensure that the source system is performing optimally. Check for any performance bottlenecks that may be affecting data retrieval.
  
  
  
  Review SLT Logs:
  
  Check the SLT logs for any additional error messages or warnings that may provide more context about the issue. This can help in diagnosing the root cause.
  
  
  
  Consult SAP Notes:
  
  Look for relevant SAP Notes that may address this specific error. SAP frequently updates its knowledge base with solutions for known issues.
  
  
  
  Increase Memory Allocation:
  
  If applicable, consider increasing the memory allocation for the SLT system to handle larger data volumes more effectively.
  
  
  
  Related Information:
  
  SLT Configuration: Familiarize yourself with the SLT configuration settings, especially those related to performance and data handling.
  SAP Documentation: Refer to the official SAP documentation for SLT for detailed guidance on configuration and troubleshooting.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can share their solutions.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.