Managing the size of the log database
SES Evolution uses an administration database and a log database. Depending on the configuration of your security policies and the desired amount of logs, the volume of the log database may grow quickly and reach a critical threshold. Logs are kept by default for 12 months on SQL Server Enterprise, and two months on SQL Server Express. You can customize this value, either when installing SES Evolution or via the administration console.
Logs that are too old are deleted daily at midnight by a task that runs on the backend.

- Select the System menu and click on Edit in the upper banner.
- In the Log database section, change the log retention parameters, which differ depending on whether you have SQL Server Enterprise or SQL Server Express.
- For each log type - agent events or system logs - enter the number of months for which you want to keep them. Logs can also be kept forever on SQL Server Enterprise.
- Click Save.

Every day at midnight, a task will run to delete logs older than the number of months specified.
This task will generate a log in the system log panel. For more information, see the section Monitoring the activity of SES Evolution backoffice components.
You can also view the results of the task in the System tile in the Dashboard. For further information, refer to the section Understanding the dashboard.