IntelliJ IDEA 13.1 Web Help

Run/debug configurations are categorized into temporary and permanent.

Temporary configuration
A temporary run/debug configuration is automatically created every time you choose Run <item_name> or Debug <item_name> for an item without a permanent configuration. Temporary configurations can be saved as permanent.
Temporary configurations are marked with semi-transparent icons and are managed same way as the permanent configurations.
By default, 5 temporary configurations are allowed per project. You can change this limit via the Edit Configurations dialog.
Permanent configuration
A configuration of this type is explicitly created for a particular class or method. If there is no permanent configuration for an item, IntelliJ IDEA automatically creates a temporary configuration for it, when you choose Run <item_name> or Debug <item_name> on the context menu of this class or method.

IntelliJ IDEA also creates a default run/debug configuration if you have specified the target application server during the module creation.

See Also

Procedures:

Reference:

Web Resources: