rxvt tabs setup

I am trying to set my rxvt preferences.

I have got the basics setup from this tutorial.Rxvt-Unicode Configuration Tutorial - AfterWiki which I put into ~/.Xdefaults

# transparency - true or false (default)
URxvt*transparent: true

# tint with any color; i.e., blue, red, tomato4, olivedrab2, etc.
#   some nice listings are at:
#     http://www.nisrv.com/drupal/?q=node/11
#     http://www.htmlgoodies.com/tutorials/colors/article.php/3478921
URxvt*tintColor: Blue

# shading - 0 to 99 darkens, 101 to 200 lightens.
#   Don't use with tintColor; just use a darker or lighter color instead.
#URxvt*shading: 40

# scrollback buffer lines - 65535 is max on most machines (64 is default)
URxvt*saveLines: 12000

# font color (default is black)
URxvt*foreground: White

# background color (prior to tinting) (default is white)
URxvt*background: Blue

# Xft (X FreeType) with Bitstream, DejaVu, Liberation, or Terminus fonts:
#  Fedora/debian packages: libXft/libxft2 
#  An anti-aliased font setup with Xft looks fantastic; it can be a bit choppy 
#  on older systems. You can always turn off anti-aliasing (antialias=false) if
#  your terminal is sluggish. Use only ONE of the Xft pairs below:
#
# Xft: Bitstream fonts
#  Fedora/debian packages: bitstream-vera-sans-mono-fonts/ttf-bitstream-vera 
#URxvt*font: xft:Bitstream Vera Sans Mono:pixelsize=12:antialias=true:hinting=true
#URxvt*boldFont: xft:Bitstream Vera Sans Mono:bold:pixelsize=12:antialias=true:hinting=true
#
# Xft: DejaVu fonts
#  Fedora/debian packages: dejavu-sans-mono-fonts/ttf-dejavu 
URxvt*font: xft:DejaVu Sans Mono:pixelsize=12:antialias=true:hinting=true
URxvt*boldFont: xft:DejaVu Sans Mono:bold:pixelsize=12:antialias=true:hinting=true
#
# Xft: Liberation fonts
#  Fedora/debian packages: liberation-mono-fonts/ttf-liberation
#URxvt*font: xft:Liberation Mono:pixelsize=13:antialias=true:hinting=true
#URxvt*boldFont: xft:Liberation Mono:bold:pixelsize=13:antialias=true:hinting=true
#
# Xft: Terminus fonts
#  Fedora/debian packages: terminus-fonts/xfonts-terminus
#URxvt*font: xft:terminus:pixelsize=15
#URxvt*boldFont: xft:terminus:bold:pixelsize=15

# Traditional fonts - a more traditional font setup in lieu of xft
#URxvt*font:-*-courier-medium-r-normal-*-14-*-*-*-*-*-iso8859-1
#URxvt*boldFont:-*-courier-bold-r-normal-*-14-*-*-*-*-*-iso8859-1

# Replace blue folder colors with a lighter shade for clarity. To
#  set colored folders and files within urxvt, xterm, and aterm, add
#  the following line to your ~/.bashrc ($HOME/.bashrc) file under
#  the heading "# User specific aliases and functions":
#   alias ls="ls -h --color=auto"
URxvt*color4: RoyalBlue
URxvt*color12: RoyalBlue

# scrollbar - true (default) or false
URxvt*scrollBar: true

# scrollbar position - left=false (default) or right=true
URxvt*scrollBar_right: false

# scrollbar style - rxvt (default), plain, next, or xterm
URxvt*scrollstyle: rxvt

Then went looking on how to create tabs and found this suggestion to put this into ~/.Xresources
https://wiki.archlinux.org/index.php/rxvt-unicode#Tabs

# Tabs
URxvt.perl-ext-common:  default,tabbed


But that doesn’t work for me. Any idea on how to set it up?
looking to get a nice terminal setup.

You could at least tell which version of openSUSE you use. May be a desktop is involved, then please tell which one (KDE, Gnome, …).