How To Fix DBPROC_PROXY056 - Read-only procedures must have an output parameter

SAP Error Message - Details

• Message type: E = Error

• Message class: DBPROC_PROXY - Messages for DB Procedure Proxies

• Message number: 056

• Message text: Read-only procedures must have an output parameter

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DBPROC_PROXY056 - Read-only procedures must have an output parameter ?

  The SAP error message DBPROC_PROXY056 indicates that a read-only procedure in your database is expected to have an output parameter, but it does not. This error typically arises when you are trying to execute a stored procedure that is defined as read-only, but the procedure's signature does not conform to the expected format.
  Cause:
  
  Procedure Definition: The stored procedure is defined as a read-only procedure but lacks an output parameter. In many database systems, read-only procedures are expected to return data through output parameters.
  Calling Convention: The way the procedure is being called may not match the expected parameters, leading to this error.
  Database Configuration: There may be specific configurations or settings in the database that enforce the requirement for output parameters in read-only procedures.
  
  Solution:
  
  
  Modify the Procedure: 
  
  If you have access to the procedure definition, modify it to include an output parameter. This could involve changing the procedure signature to include an output parameter that will hold the result of the read operation.
  Example:
  CREATE PROCEDURE MyReadOnlyProcedure(OUT result VARCHAR(255))
  BEGIN
      -- Your logic here
      SET result = 'Some value';
  END;
  
  
  
  
  Check Procedure Call: 
  
  Ensure that when you call the procedure, you are providing the necessary output parameter. The call should match the procedure's definition.
  Example:
  CALL MyReadOnlyProcedure(@outputParam);
  
  
  
  
  Review Documentation: 
  
  Check the documentation for your specific database system (e.g., SAP HANA, SQL Server, etc.) to understand the requirements for read-only procedures and how to properly define and call them.
  
  
  
  Consult with Database Administrator: 
  
  If you do not have the necessary permissions to modify the procedure, consult with your database administrator or the person responsible for the database schema to address the issue.
  
  
  
  Related Information:
  
  Database Documentation: Refer to the official documentation for your specific database system to understand the rules and conventions for stored procedures.
  SAP Notes: Check SAP Notes or the SAP Community for any known issues or updates related to this error message.
  Testing: After making changes, thoroughly test the procedure to ensure it behaves as expected and resolves the error.
  
  By addressing the procedure definition and ensuring it includes the required output parameter, you should be able to resolve the DBPROC_PROXY056 error.