How To Fix IUUC_CLOG_CORE154 - Access Plan Calculation

SAP Error Message - Details

• Message type: E = Error

• Message class: IUUC_CLOG_CORE - SLT Change Log Messages

• Message number: 154

• Message text: Access Plan Calculation

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message IUUC_CLOG_CORE154 - Access Plan Calculation ?

  The SAP error message IUUC_CLOG_CORE154 typically relates to issues with the access plan calculation in the context of SAP Landscape Transformation (SLT) replication. This error can occur during the data replication process when the system encounters difficulties in determining the optimal access plan for the data being processed.
  Cause:
  
  Database Performance Issues: The underlying database may be experiencing performance issues, leading to timeouts or failures in access plan calculations.
  Configuration Issues: Incorrect or suboptimal configuration settings in the SLT system or the source/target systems can lead to this error.
  Data Volume: Large volumes of data being processed at once can overwhelm the system, causing access plan calculation failures.
  Database Statistics: Outdated or missing database statistics can lead to inefficient access plan calculations.
  Network Issues: Connectivity problems between the source and target systems can also contribute to this error.
  
  Solution:
  
  Check Database Performance: Monitor the performance of the database to ensure it is operating optimally. Look for long-running queries or locks that may be affecting performance.
  Review Configuration: Verify the configuration settings in the SLT system and ensure they are set according to best practices. This includes checking the settings for the source and target systems.
  Optimize Data Volume: If possible, reduce the volume of data being processed in a single replication cycle. Consider breaking down large data loads into smaller batches.
  Update Database Statistics: Ensure that the database statistics are up to date. This can often be done through database administration tools or commands specific to the database being used.
  Network Stability: Check the network connection between the source and target systems to ensure there are no interruptions or latency issues.
  Review Logs: Check the SLT logs for any additional error messages or warnings that may provide more context about the issue.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on troubleshooting.
  SLT Documentation: Review the official SAP documentation for SLT to understand best practices and configuration settings.
  Community Forums: Engage with SAP community forums or support channels 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 necessary to contact SAP support for further assistance.