How To Fix MC341 - Internal error when generating the explain plan

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 341

• Message text: Internal error when generating the explain plan

What causes this issue?

An internal error occurred when generating the explain plan.

System Response

The system reports the error and continues.

How to fix this error?

If this internal error occurred when generating the explain plan for a
view which was created for a transparent matchcode ID, activate the
matchcode ID again. You can then try again to generate the explain
plan. If internal errors still occur, please contact your system
administrator. If he/she cannot solve the problem, please contact the
SAP HelpDesk.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC341 - Internal error when generating the explain plan ?

  The SAP error message MC341, which indicates an "Internal error when generating the explain plan," typically occurs in the context of SAP BW (Business Warehouse) or SAP HANA when there is an issue with the execution plan for a query. This error can arise due to various reasons, including issues with the underlying database, inconsistencies in the data model, or problems with the query itself.
  Causes:
  
  Database Issues: There may be problems with the database that prevent it from generating an execution plan. This could be due to database corruption, misconfiguration, or resource limitations.
  Query Complexity: The query being executed may be too complex or may involve operations that the database cannot optimize properly.
  Data Model Inconsistencies: There may be inconsistencies or errors in the data model, such as missing or incorrect relationships between tables.
  Version Compatibility: There could be compatibility issues between the SAP BW version and the underlying database version.
  Insufficient Resources: The database server may be running low on resources (CPU, memory, etc.), which can affect its ability to generate execution plans.
  
  Solutions:
  
  Check Database Health: Ensure that the database is functioning correctly. Check for any corruption or issues and perform necessary maintenance tasks, such as database consistency checks.
  Simplify the Query: If possible, try to simplify the query to see if that resolves the issue. This may involve breaking down complex queries into smaller, more manageable parts.
  Review Data Model: Check the data model for any inconsistencies or errors. Ensure that all relationships and data definitions are correct.
  Update Software: Ensure that both SAP BW and the underlying database are up to date with the latest patches and updates. This can resolve compatibility issues.
  Monitor Resources: Check the resource usage on the database server. If resources are low, consider optimizing the database or upgrading the hardware.
  Consult SAP Notes: Look for relevant SAP Notes or Knowledge Base Articles (KBAs) that may address this specific error. SAP frequently updates its documentation with solutions for known issues.
  
  Related Information:
  
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. They can provide more specific guidance based on your system configuration and the details of the error.
  Transaction Codes: Familiarize yourself with relevant transaction codes in SAP BW, such as RSA1 (Data Warehousing Workbench) and ST22 (Dump Analysis), to analyze the error further.
  Logs and Traces: Check the application logs and traces for more detailed error messages that may provide additional context for the issue.
  
  By following these steps, you should be able to diagnose and potentially resolve the MC341 error in your SAP environment.