I have been trying to install the Oracle Developper Tools with ODAC update 3 (because I need it to work with Entity framwork 6) but the Unified installer bring me a PRVG-11322 Error.

It seem to be linked to the fact that my computer have an underscore in his hostname (and I can't change it, work domain-joined workstation)

Altought the install instructions mention installation using xcopy, I can't find the instruction that are supposed to be in the zip package.

I am pretty much out of ideas. Do you know how to do it.

  • I wonder if you could install it to another machine and then copy the installation and relevant registry settings to your machine? Commented Apr 9, 2015 at 12:46
  • 1
    And tell your company's sys admin(s) that having underscore in hostname components of DNS names is a bad idea (not allowed!) Commented Apr 9, 2015 at 12:47

1 Answer 1


use the installer in commandline mode and use the option to ignore prerequisite checks

  • by using command line, TNSNAMES.ORA will not be built.
    – Mark
    Commented Dec 4, 2020 at 2:39

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