Online Documentation for SQL Manager for Oracle
Selecting objects
This step of the wizard allows you to select objects of the specified type for the truncate operation.
Schema
Use the drop-down list to select the schema which contains tables/clusters to be processed.
To select a table/cluster, you need to move it from the Available list to the Selected list. Use the buttons or drag-and-drop operations to move the objects from one list to another.
Click the Next button to proceed to the Setting truncate options step of the wizard.