How To Fix DB6PM840 - No index column has been specified

SAP Error Message - Details

• Message type: E = Error

• Message class: DB6PM - DB2 UDB for UNIX, Windows: Performance Monitoring

• Message number: 840

• Message text: No index column has been specified

Self-Explanatory Message

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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DB6PM840 - No index column has been specified ?

  The SAP error message DB6PM840: No index column has been specified typically occurs when you are trying to create or modify a database table or index in SAP, but you have not specified any columns to be used as index keys. This can happen in various scenarios, such as when defining a new database table or altering an existing one.
  Cause:
  
  Missing Index Columns: The most common cause of this error is that the index definition does not include any columns. An index must have at least one column specified to function correctly.
  Incorrect Syntax: If you are using a SQL command or a data definition language (DDL) statement, there might be a syntax error that leads to the omission of index columns.
  Database Constraints: If there are constraints or rules in place that require certain columns to be indexed but they are not specified, this error can occur.
  
  Solution:
  To resolve the error, you should ensure that you specify at least one column for the index. Here are the steps you can take:
  
  
  Check Index Definition: Review the index definition in your DDL statement or table definition. Make sure that you have included the necessary columns.
  
  Example of a correct index definition:
  CREATE INDEX index_name ON table_name (column1, column2);
  
  
  
  
  Modify Existing Index: If you are trying to modify an existing index, ensure that you are adding or altering it correctly by specifying the columns.
  
  Example of modifying an index:
  ALTER INDEX index_name ON table_name ADD (column1);
  
  
  
  
  Review Table Structure: If you are creating a new table, ensure that the table structure includes the necessary columns that you want to index.
  
  Example of creating a table with an index:
  CREATE TABLE table_name (
      column1 datatype,
      column2 datatype,
      ...
      PRIMARY KEY (column1)  -- This creates an index on column1
  );
  
  
  
  
  Consult Documentation: If you are unsure about the syntax or requirements, refer to the SAP documentation or the database documentation for the specific SQL dialect you are using.
  
  
  Check for Constraints: Ensure that there are no constraints that might be preventing the index from being created or modified.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error.
  Database Documentation: Review the documentation for the specific database you are using (e.g., HANA, Oracle, SQL Server) for details on index creation and management.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the DB6PM840 error and successfully create or modify your index in SAP.