You can configure how long your Talend Studio keeps connection with the Nexus server, from which your Talend Studio retrieves updates and custom libraries and to which you can publish your artifacts.
From the menu bar, click Window > Preferences to display the [Preferences] dialog box.
Expand the Talend node and click Nexus to display the relevant view.
In the Timeout for nexus connection (ms) field, specify the time in milliseconds you want your Talend Studio to wait for an interaction with the Nexus server before cutting the connection, 0 for an infinite timeout.
Click Apply to apply your changes; click OK to validate the settings and close the [Preferences] dialog box.
For more information on installing and configuring Nexus, see the Talend Installation Guide.