How To Fix ESH_SEARCH028 - Handle for parallel query could not be loaded

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_SEARCH - ESH Search

• Message number: 028

• Message text: Handle for parallel query could not be loaded

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_SEARCH028 - Handle for parallel query could not be loaded ?

  The SAP error message ESH_SEARCH028 ("Handle for parallel query could not be loaded") typically occurs in the context of the SAP Enterprise Search (SAP ESH) when there is an issue with executing a parallel query. This error can arise due to various reasons, including configuration issues, system performance problems, or issues with the underlying database.
  Causes:
  
  Configuration Issues: Incorrect settings in the SAP ESH configuration can lead to this error. This includes issues with the search connector or the search service configuration.
  Performance Problems: If the system is under heavy load or if there are performance bottlenecks, it may not be able to handle parallel queries effectively.
  Database Issues: Problems with the underlying database, such as locks, deadlocks, or resource constraints, can prevent the query from executing properly.
  Memory Limitations: Insufficient memory allocation for the SAP application server or the database can lead to failures in loading handles for parallel queries.
  Version Compatibility: Incompatibilities between different versions of SAP components or between SAP and the database can also cause this error.
  
  Solutions:
  
  Check Configuration: Review the configuration settings for SAP ESH and ensure that all parameters are set correctly. This includes checking the search connector settings and ensuring that the search service is properly configured.
  Monitor System Performance: Use SAP monitoring tools to check for performance issues. Look for high CPU usage, memory bottlenecks, or other resource constraints that could affect query execution.
  Database Health Check: Perform a health check on the database to identify any locks, deadlocks, or performance issues. Ensure that the database is properly tuned and optimized for performance.
  Increase Memory Allocation: If memory limitations are suspected, consider increasing the memory allocation for the SAP application server or the database.
  Update Components: Ensure that all SAP components are up to date and compatible with each other. Check for any available patches or updates that may address known issues.
  Review Logs: Check the SAP application logs and the database logs for any additional error messages or warnings that could provide more context about the issue.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Documentation: Review the official SAP documentation for Enterprise Search and related components to ensure that all configurations are in line with best practices.
  
  If the issue persists after trying the above solutions, it may be necessary to engage SAP support for further assistance.