Files to download:

2147483648 SPATIAL_Tutorial_OEL6.4_12cR1.ova.7z.001
2147483648 SPATIAL_Tutorial_OEL6.4_12cR1.ova.7z.002
2147483648 SPATIAL_Tutorial_OEL6.4_12cR1.ova.7z.003
2147483648 SPATIAL_Tutorial_OEL6.4_12cR1.ova.7z.004
2147483648 SPATIAL_Tutorial_OEL6.4_12cR1.ova.7z.005
2147483648 SPATIAL_Tutorial_OEL6.4_12cR1.ova.7z.006
2147483648 SPATIAL_Tutorial_OEL6.4_12cR1.ova.7z.007
2147483648 SPATIAL_Tutorial_OEL6.4_12cR1.ova.7z.008
923917480  SPATIAL_Tutorial_OEL6.4_12cR1.ova.7z.009

Uncompress and reassemble into one VirtualBox appliance file called 

SPATIAL_Tutorial_OEL6.4_12cR1.ova

1. Make sure you have 7-zip installed (http://7-zip.org/)

1.1. On Linux run the following command from the same directory 
     that contains the compressed files:

7z e SPATIAL_Tutorial_OEL6.4_12cR1.ova.7z.001

1.2. On Windows run the following command from the same directory 
     that contains the compressed files:

"C:\Program Files\7-Zip\7z.exe" e SPATIAL_Tutorial_OEL6.4_12cR1.ova.7z.001

1.3. On Mac run the following command from the same directory 
     that contains the compressed files:

/Applications/Ez7z.app/Contents/Resources/7za e SPATIAL_Tutorial_OEL6.4_12cR1.ova.7z.001

2. You can then import the SPATIAL_Tutorial_OEL6.4_12cR1.ova file into Oracle VM VirtualBox.