Compact a Project Database
Over time, an active Insight project will accumulate a significant amount of project history for "undo" purposes and become increasingly cluttered. This can cause the project database to be bloated and less efficient.
The Compact operation allows you to:
- compact and tidy up the database of any empty, partial or unnecessary pages, which may improve performance in certain situations and free up some space, and/or
- remove the "undo" history of wells and horizons in the project up to the current revision.
Note: If you remove the "undo" history, you will not be able to undo further back than the current revision.
Compact in Data Manager
![Create a backup](https://media.screensteps.com/image_assets/assets/003/382/124/original/969bc7a4-1289-448e-93e0-9405ebbb9f2b.jpg)
- Launch the Data Manager (see Launching the Data Manager).
- In the Data Manager window, select Compact.
Note: The project you open in the Insight Launcher will be the project that you want to compact.
Run the compact operation
![Run the compact operation](https://media.screensteps.com/image_assets/assets/003/382/126/original/5b75496b-85fb-4fe4-b18c-cadc10b0e039.png)
- You can choose to compact the entire project database, only the horizon database, or both.
- Select the Remove "undo" history checkboxes to delete the "undo" history of wells and/or horizons.
Note: If you remove the "undo" history, you will not be able to undo further back than the current revision. - Click Run to start compacting the project.
A notice will appear to confirm that the compact has been completed.
![](https://media.screensteps.com/image_assets/assets/003/382/128/original/ca6cfcb5-9997-4040-9e37-daa8ef24c61c.png)