How To Fix SADA501 - Error determining execution plan (EXPLAIN)

SAP Error Message - Details

• Message type: E = Error

• Message class: SADA - CCMS: SAP DB Porting and Development

• Message number: 501

• Message text: Error determining execution plan (EXPLAIN)

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SADA501 - Error determining execution plan (EXPLAIN) ?

  The SAP error message SADA501, which states "Error determining execution plan (EXPLAIN)," typically occurs when there is an issue with the database's ability to generate an execution plan for a SQL query. This can happen for several reasons, including:
  Causes:
  
  Database Configuration Issues: The database may not be properly configured, or there may be issues with the database optimizer settings.
  SQL Syntax Errors: There may be syntax errors or unsupported SQL constructs in the query being analyzed.
  Statistics Outdated: The database statistics may be outdated, leading to difficulties in generating an optimal execution plan.
  Database Locks or Resource Issues: There may be locks on the database or insufficient resources (like memory or CPU) available to execute the query.
  Database Corruption: In rare cases, there could be corruption in the database that prevents the execution plan from being generated.
  
  Solutions:
  
  Check SQL Syntax: Review the SQL query for any syntax errors or unsupported features. Ensure that the query is valid and can be executed without issues.
  Update Database Statistics: Run the appropriate commands to update the statistics for the tables involved in the query. This can help the optimizer make better decisions.
  
  For example, in Oracle, you might use DBMS_STATS.GATHER_TABLE_STATS.
  
  
  Review Database Configuration: Check the database configuration settings, especially those related to the optimizer. Ensure that they are set correctly for your workload.
  Check for Locks: Use database tools to check for any locks that might be affecting the execution of the query. Resolve any locking issues if found.
  Monitor Resource Usage: Use monitoring tools to check the resource usage of the database. If resources are low, consider optimizing the database or upgrading hardware.
  Database Repair: If you suspect corruption, you may need to run repair utilities specific to your database system to fix any issues.
  
  Related Information:
  
  Database Documentation: Refer to the documentation for your specific database (e.g., Oracle, SQL Server, HANA) for more details on execution plans and troubleshooting.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Transaction Codes: Use transaction codes like ST22 (Dump Analysis) or SM21 (System Log) to check for any related errors or dumps that might provide more context on the issue.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your database administrator or SAP support for further assistance.