[Bug 1260321] Re: dpkg-deb unable to install/upgrade oracle-java8-installer

[Paul Crawford]

No, the underlying problem is with dpkg not recognising the .xz compression type used in Oracle's .deb file.
This is ALREADY fixed in the 12.04 version, so for from there being "nothing the Ubuntu developers can do", there is - backport the later version of dpkg that supports the .xz file type!

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https://bugs.launchpad.net/bugs/1260321

Title:
  dpkg-deb unable to install/upgrade oracle-java8-installer

Status in “dpkg” package in Ubuntu:
  Invalid

Bug description:
  Running a 10.04 LTS machine (32-bit) and it seem that the oracle-
  java8-installer now uses the more recent compression option that is
  not supported by the version of dpkg that is currently used by 10.04

  Indirectly this is a security risk as java is well known for
  vulnerabilities and being unable to update a package when it has come
  through the official repository is a problem!

  Upon running 'apt-get upgrade' this was the error message:

  Preparing to replace oracle-java8-installer 8b115-0~webupd8~0 (using .../oracle-java8-installer_8b119-0~webupd8~0_all.deb) ...
  oracle-license-v1-1 license has already been accepted
  Unpacking replacement oracle-java8-installer ...
  dpkg-deb: file `/var/cache/apt/archives/oracle-java8-installer_8b119-0~webupd8~0_all.deb' contains ununderstood data member data.tar.xz     , giving up
  dpkg: error processing /var/cache/apt/archives/oracle-java8-installer_8b119-0~webupd8~0_all.deb (--unpack):
   subprocess dpkg-deb --fsys-tarfile returned error exit status 2

  System information:

  $ lsb_release -rd
  Description:	Ubuntu 10.04.4 LTS
  Release:	10.04

  $ apt-cache policy dpkg
  dpkg:
    Installed: 1.15.5.6ubuntu4.6
    Candidate: 1.15.5.6ubuntu4.6
    Version table:
   *** 1.15.5.6ubuntu4.6 0
          500 http://gb.archive.ubuntu.com/ubuntu/ lucid-updates/main Packages
          100 /var/lib/dpkg/status
       1.15.5.6ubuntu4.5 0
          500 http://security.ubuntu.com/ubuntu/ lucid-security/main Packages
       1.15.5.6ubuntu4 0
          500 http://gb.archive.ubuntu.com/ubuntu/ lucid/main Packages

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