You can use the extended feature to find various types of objects (tables, columns, declarations within functions or procedures, and so on) associated with an Oracle database connection and to open editing panes to work with those objects. (Thus, extended search is more comprehensive than the Find DB Object feature.) To move to the Extended Search pane or to display it if it is not visible, from the View menu, select Extended Search.
The following figure shows the Extended Search pane with results from a search for columns associated with a connection named stacd05_hr that start with EM. (The pane may be displayed on the right side of the SQL Developer window or at the bottom.)

Connection: Database connection to use for the search.
Name: An object name or a string containing one or more wildcard characters. For example: EM% for all names starting with EM.
Type: Type of object for which to restrict the search.
Usage: Usage of the object. May or may not be relevant, depending on the type of object.
Click the Lookup icon to display objects that meet the specified criteria. To view or edit one of the objects (or the parent object that contains the specified object), double-click its name in the Extended Search pane
You can detach, move, and dock the Extended Search pane by clicking and holding the tab, and dragging and positioning the pane.
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