How To Fix RSRMON044 - Cache is used by the query

SAP Error Message - Details

• Message type: E = Error

• Message class: RSRMON - Message Class for Technical Info

• Message number: 044

• Message text: Cache is used by the query

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSRMON044 - Cache is used by the query ?

  The SAP error message RSRMON044 indicates that a query is trying to access a cache that is currently in use. This typically occurs in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence) when a query is executed and the cache for that query is locked or being utilized by another process.
  Cause:
  
  Concurrent Query Execution: Multiple users or processes may be trying to execute the same query simultaneously, leading to a situation where the cache is locked.
  Long-Running Queries: If a query takes a long time to execute, it may hold the cache for an extended period, preventing other queries from accessing it.
  Cache Configuration: The cache settings in the BW system may not be optimized, leading to contention issues.
  
  Solution:
  
  Wait and Retry: If the error is due to concurrent execution, waiting for a few moments and then retrying the query may resolve the issue.
  Check Running Queries: Use transaction codes like RSRT (Query Monitor) or RSRQ (Query Runtime) to check for any long-running queries that may be holding the cache. You can terminate these queries if necessary.
  Optimize Queries: Review the design of the queries to ensure they are efficient and do not take longer than necessary to execute. This may involve optimizing the underlying data model or query logic.
  Adjust Cache Settings: Review and adjust the cache settings in the BW system. This may involve increasing the cache size or changing the cache expiration settings.
  Clear Cache: If appropriate, you can clear the cache for the specific query or for all queries. This can be done using transaction RSR_CACHE or RSR_CACHE_CLEAR.
  System Performance: Monitor the overall performance of the BW system to ensure that it is not under heavy load, which could contribute to cache contention.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSRT, RSRQ, and RSR_CACHE for monitoring and managing queries and caches.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review SAP documentation on query performance and caching strategies to better understand how to manage and optimize query execution in BW.
  
  By following these steps, you should be able to address the RSRMON044 error and improve the performance of your queries in SAP BW.