How To Fix IUUC_CLOG_CORE118 - Restart if Complex Changes Occur

SAP Error Message - Details

• Message type: E = Error

• Message class: IUUC_CLOG_CORE - SLT Change Log Messages

• Message number: 118

• Message text: Restart if Complex Changes Occur

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message IUUC_CLOG_CORE118 - Restart if Complex Changes Occur ?

  The SAP error message IUUC_CLOG_CORE118, which states "Restart if Complex Changes Occur," typically relates to issues encountered during the data replication process in SAP Landscape Transformation (SLT) or SAP Data Services. This error can occur when there are complex changes in the source system that the replication process cannot handle without a restart.
  Cause:
  
  Complex Changes: The error often arises when there are complex changes in the source database, such as bulk updates, deletes, or inserts that exceed the capabilities of the replication process.
  Locking Issues: If there are locks on the source tables or if the source system is under heavy load, it can lead to this error.
  Configuration Issues: Incorrect configuration settings in the SLT or Data Services setup can also lead to this error.
  Network Issues: Temporary network issues or interruptions can cause the replication process to fail.
  
  Solution:
  
  Restart the Replication Process: As the error message suggests, restarting the replication process can often resolve the issue. This can be done through the SLT configuration or Data Services management console.
  Check Source System Load: Monitor the source system for any heavy load or locking issues. If necessary, schedule replication during off-peak hours.
  Review Configuration: Ensure that the SLT or Data Services configuration is correct. Check for any settings that may limit the handling of complex changes.
  Increase Resources: If the source system is under heavy load, consider increasing the resources (CPU, memory) allocated to it.
  Check Logs: Review the SLT logs for more detailed error messages that can provide insights into what caused the issue.
  Update SLT Version: Ensure that you are using the latest version of SLT, as updates may contain bug fixes and performance improvements.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to IUUC_CLOG_CORE118 for any specific patches or updates that may address this issue.
  Documentation: Refer to the official SAP documentation for SLT or Data Services for best practices on handling complex changes and optimizing replication processes.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can provide insights or solutions.
  
  If the problem persists after trying the above solutions, it may be necessary to contact SAP support for further assistance.