How To Fix SMMSS_DDIC006 - The same file group must be chosen for the table and the clustered index

SAP Error Message - Details

• Message type: E = Error

• Message class: SMMSS_DDIC - DDIC Messages for Microsoft SQL Server

• Message number: 006

• Message text: The same file group must be chosen for the table and the clustered index

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SMMSS_DDIC006 - The same file group must be chosen for the table and the clustered index ?

  The SAP error message SMMSS_DDIC006 indicates that there is a mismatch between the file group assigned to a database table and the file group assigned to its clustered index. In SAP, when you create a table and a clustered index, both must reside in the same file group for the database to function correctly.
  Cause:
  This error typically occurs when:
  
  A database table is created in one file group.
  The clustered index for that table is created in a different file group.
  
  In SQL Server, for example, a table can be created in a specific file group, and if the clustered index is created in another file group, it leads to this error.
  Solution:
  To resolve this error, you need to ensure that both the table and its clustered index are created in the same file group. Here are the steps to do this:
  
  
  Identify the File Groups:
  
  Check the file group of the table and the clustered index. You can do this by querying the system catalog views in your database.
  
  
  
  Recreate the Clustered Index:
  
  
  If the clustered index is in a different file group, you will need to drop the existing clustered index and recreate it in the same file group as the table.
  
  
  Use the following SQL commands as an example:
  -- Drop the existing clustered index
  DROP INDEX [IndexName] ON [TableName];
  
  -- Recreate the clustered index in the same file group as the table
  CREATE CLUSTERED INDEX [IndexName] ON [TableName] ([ColumnName])
  WITH (DROP_EXISTING = ON) ON [FileGroupName];
  
  
  
  
  Create the Table and Index Together:
  
  If you are creating a new table and index, ensure that you specify the same file group for both in your CREATE TABLE and CREATE INDEX statements.
  
  
  
  Related Information:
  
  File Groups: In SQL Server, file groups are used to group database files for allocation and management purposes. Each table and index can be assigned to a specific file group.
  Clustered Index: A clustered index determines the physical order of data in a table. A table can have only one clustered index.
  SAP Database: Depending on the database system (e.g., SAP HANA, SQL Server, Oracle), the specific commands and methods to check file groups and create tables/indexes may vary.
  
  Best Practices:
  
  Always ensure that the file group settings are consistent when creating tables and their associated indexes.
  Regularly review your database schema to avoid such mismatches, especially when making changes or migrations.
  Consult the SAP documentation or your database administrator for specific guidelines related to your SAP environment and database system.