How To Fix UJXO_META_EXCEPTION020 - Internal Error in Query Cache

SAP Error Message - Details

• Message type: E = Error

• Message class: UJXO_META_EXCEPTION - Exception message for metadata API

• Message number: 020

• Message text: Internal Error in Query Cache

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message UJXO_META_EXCEPTION020 - Internal Error in Query Cache ?

  The SAP error message UJXO_META_EXCEPTION020 indicates an internal error in the query cache, which is part of the SAP BW (Business Warehouse) or SAP HANA systems. This error typically arises when there are issues with the metadata or the query cache itself, which can prevent the system from executing queries properly.
  Causes:
  
  Corrupted Query Cache: The query cache may have become corrupted due to system inconsistencies or improper shutdowns.
  Metadata Changes: Changes in the underlying data model or metadata (like InfoObjects, InfoProviders, or queries) that are not properly synchronized with the query cache.
  System Bugs: There may be bugs in the SAP system that lead to this error, especially if you are using an older version of the software.
  Insufficient Resources: Lack of memory or other system resources can lead to issues with the query cache.
  Inconsistent Data: Data inconsistencies or issues in the underlying data sources can also trigger this error.
  
  Solutions:
  
  
  Clear the Query Cache: 
  
  You can clear the query cache to resolve issues related to corrupted cache entries. This can often be done through transaction codes like RSRT (for query execution) or RSADMIN (for cache management).
  In some cases, you may need to use the RS_CUBE transaction to clear the cache for specific InfoProviders.
  
  
  
  Check Metadata: 
  
  Ensure that all metadata changes are properly activated and that there are no inconsistencies in the data model.
  You can use transaction RSA1 to check and manage your data model.
  
  
  
  Update SAP System: 
  
  If you are running an older version of SAP, consider applying the latest support packages or patches, as these may contain fixes for known bugs.
  
  
  
  Monitor System Resources: 
  
  Check the system's memory and resource usage. If the system is running low on resources, consider optimizing performance or upgrading hardware.
  
  
  
  Rebuild Queries: 
  
  If the issue persists, consider rebuilding the affected queries or InfoProviders to ensure they are correctly configured.
  
  
  
  Consult SAP Notes: 
  
  Search for relevant SAP Notes in the SAP Support Portal that may address this specific error. SAP Notes often provide detailed troubleshooting steps and solutions.
  
  
  
  Contact SAP Support: 
  
  If none of the above solutions work, it may be necessary to contact SAP Support for further assistance, especially if the issue is complex or related to a bug.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1, RSRT, RSADMIN, and RS_CUBE for managing queries and caches.
  SAP Community: Engage with the SAP Community forums for insights and shared experiences from other users who may have encountered similar issues.
  Documentation: Review SAP documentation for best practices in managing query performance and cache settings.
  
  By following these steps, you should be able to diagnose and resolve the UJXO_META_EXCEPTION020 error effectively.