How To Fix DA645 - Table & change from Column to Row Store; DB version already correct

SAP Error Message - Details

• Message type: E = Error

• Message class: DA - Dictionary: Compare, distribution, timer, instantiation

• Message number: 645

• Message text: Table & change from Column to Row Store; DB version already correct

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message DA645 - Table & change from Column to Row Store; DB version already correct ?

  The SAP error message DA645 typically indicates an issue related to the database table storage format in SAP HANA. This error occurs when there is an attempt to change a table from a column store to a row store, but the database version is already correct, meaning that the underlying database does not require an upgrade or change.
  Cause:
  
  Table Storage Format: The error arises when there is a mismatch in the expected storage format of a table. In SAP HANA, tables can be stored in either column store or row store formats. The error suggests that there is an attempt to change the storage format of a table that is already in the desired format.
  Database Version: The message indicates that the database version is already correct, which means that the system is not in a state that requires a change in the storage format.
  
  Solution:
  
  Check Table Definition: Verify the current storage format of the table in question. You can do this by querying the system catalog views in SAP HANA to see the current configuration of the table.
  SELECT * FROM M_TABLES WHERE TABLE_NAME = '<your_table_name>';
  
  Avoid Unnecessary Changes: If the table is already in the desired format (column store or row store), you do not need to perform any changes. Ensure that your operations or scripts do not attempt to change the format unnecessarily.
  Review Migration Scripts: If you are running migration scripts or updates, review them to ensure they are not trying to change the storage format of tables that are already in the correct format.
  Consult Documentation: Refer to the SAP HANA documentation for guidelines on table storage formats and best practices for managing them.
  
  Related Information:
  
  SAP HANA Table Types: Understand the differences between column store and row store tables in SAP HANA. Column store is optimized for analytical queries, while row store is better for transactional workloads.
  Database Administration: Familiarize yourself with database administration tasks in SAP HANA, including how to manage table formats and perform migrations.
  SAP Notes and Support: Check SAP Notes for any known issues or patches related to this error message. SAP Support can provide additional assistance if needed.
  
  If the issue persists after following these steps, consider reaching out to SAP Support for further assistance, providing them with detailed information about the error and the context in which it occurs.