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Summary: Learn how to effectively split a Microsoft Access database in our informative blog post. We walk you through the process, explaining the benefits of database splitting, and offer step-by-step instructions. Splitting your Access database enhances data security, improves performance, and enables collaborative work. Discover the advantages of this technique and master the art of dividing your database with ease.

An Access database serves as a versatile repository for Microsoft data, contained within a single file. However, the continuous use of this database can potentially impact its performance, especially when multiple users access it concurrently. Simultaneous usage of the Access database has the potential to hinder its performance and may even lead to data loss over time.

Dividing the database into two separate files is a highly effective solution for enhancing database performance. This process, known as database splitting, results in the creation of two distinct files: the back end and the front end. The back-end files house the tables with a .accdb suffix, while the front-end files encompass all other components, including forms, reports, and macros. Post-splitting, every user gains the capability to exchange data with the connected back-end database, streamlining collaborative work and bolstering overall efficiency.

Splitting Access Database – Benefits

  • Faster and efficient operation
  • Data is readily available
  • Easy data sharing option
  • Supports multiple users
  • Improves reliability
  • Improved performance
How to split the database in Access?

The database can be split using the ‘Database Splitter Wizard.’ But we need to keep in mind the following things before working with the tool:

  • Splitting a large database is a complex process, so before making such changes you must speak with the developer.
  • Make sure that the Access database version you wish to split must be in accordance with the backend database file format. For example, if the back-end database has an .accdb file format, then the Access database version must be compatible with the .accdb file format.
  • Always keep a backup copy of the database file. This will make the process risk-free, and the original data is untouched.
Steps to split Access Database
  1. Make sure that you have created a copy of the original database.
  2. Launch MS Access and open the database the database file
  3. Select Database Tools from the main menu and click on Access Database in the ‘Move Data’ on Access Database
  4. Under the Database Splitter dialogue box, click on the button Split on the button Split Database
  5. On the Create Back-end Database window, write the name for the back-end database file and select the location where you want the file to be saved. Click Split.Click Split
  6. Note: Use the‘_be’ suffix for the back-end database name. This way your original database will be saved as front-end, and the back-end database can be identified with the ‘_be’ suffix.
    On closing the Access database, you will have the back-end database in the selected folder and the front-end database will be in the original folder.

What to do if the Access database is corrupt?

The manual database splitting method may not be suitable for corrupt or inaccessible Access databases. Additionally, if there are issues with the Database Splitter Wizard, it can potentially compromise original data and result in the loss of crucial files. To mitigate these risks, professional tools like Kernel Access Database Repair offer a reliable solution.

Kernel Access Database Repair is proficient in addressing a wide range of Access errors, including the “access database unrecognized format” error. This software excels at restoring the table structure, auto number, primary keys, and field sizes, making it a dependable choice for repairing corrupt Access databases and safeguarding your valuable data.


Splitting your Access database not only enhances performance and data accessibility but also serves as a preventive measure against data corruption. However, when the original database is already corrupt, the first step is to repair it. In such cases, relying on a professional tool like Kernel Access Database Repair is essential. This versatile tool is proficient not only in fixing access database errors, including error 3151 but also in restoring the integrity of your database, ensuring seamless data management.

Kernel for Access Database Repair