If you want to list  and write to a txt-File all featureClasses (in a FetaureDataset) stored in SDE/Oracle, it is done with a few line Python.

import arcpy
from arcpy import env
import os

# Set the workspace for the ListFeatureClass function
#
env.workspace = "Database Connections/VECTOR.arcsde01.sde/FEATURE_DATASET"

# Use the ListFeatureClasses function to return a list of 
#  all shapefiles.
#
fcList = arcpy.ListFeatureClasses()

print str(fcList)

# setting up output-file and write to file
file = open("sdelayers.txt", "w")
file.write(str(fcList))
file.close()

The Austrian  govermental geodata-departments offer a free Basemap for Austria – Basemap.at (http://basemap.at/) – similar to GoogleMaps or OSM, based on official governmental data.

You can access this map via QGIS too – add a WMS/WMTS-Layer and use the following URL

http://www.basemap.at/wmts/1.0.0/WMTSCapabilities.xml

… for the best rendering-quality (no distortions) choose Google’s Pseudo Mercator as Project(Display)-CRS: EPSG 3857 (in QGIS 2.x: Settings – Project properties)

If you want to follow existing vector-geometry (trace it), the plug-in traceDigitize is very helpful. Please be keep in mind to set the Snapping-Tolerance (Settings – Snapping Options).