I keep getting this error about 90% through the installation. As per answer to another v. similar thread I have checked via Command Prompt tasklist/m function that there are no other processes or applications using the file. So what now ? Any suggestions most welcome.

2 Answers 2


It would appear that library file is used in Oracle. Are you wanting to use this within QGIS? If not then you could consider installing and running the OSGeo4W Network Installer.

When you run it, select the Advanced Install option and follow through the instructions until you see the Select Packages menu. Type "oracle" in the search and select an option that doesn't involve installing it (e.g. Skip or Keep as shown in the red box).

Select packages

Note: This is purely conjecture on my part as I haven't come across this issue before.

  • 1
    Many thanks Joseph, I will give that a go as I don't need to use Oracle (best left well alone !). I have successfully installed QGIS though on another, presumably 'cleaner' laptop so if it doesn't work all is not lost. Thanks again, Alastair Jan 8, 2016 at 11:43
  • @AlastairMorton - Most welcome buddy, glad you got installed! It's always handy having more than one computer at your disposal :)
    – Joseph
    Jan 8, 2016 at 11:47
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    I had the same problem. Used the the hint Joseph gave: install teh OSGeo4W Network Installer. It may have to do with Oracle conditions for usage as it came with an agree or not question for oracle usage even though I had already unchecked the oracle parts.
    – user67368
    Feb 16, 2016 at 22:33

I had the same problem with QGIS 2.18.12. Before there was installed version 2.18.11 which I deinstalled correctly. So I couldn't believe that oracle is the reason. In pure distress I cleared up my C:-device. This solved the problem.

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