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I recently installed mongodb for a project for a data mining class I'm taking and while loading all the documents I needed I got an error specifying mongodb is out of memory and that I needed to install the 64 bit version to add additional records to the database.

Problem is, I don't know how to do that (or uninstall the 32 bit version..).

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How did you install -- with apt-get & friends? – dampier Mar 20 '13 at 19:15
Yup, apt-get for sure. – Ben Nelson Mar 20 '13 at 19:17
ok, next silly question :) you are running a 64-bit linux distro, right? – dampier Mar 20 '13 at 19:21
thanks for your help! – Ben Nelson Mar 20 '13 at 19:23
yeah i have the 32-bit version, just double checked – Ben Nelson Mar 20 '13 at 19:24

Based on a little poking around and this thread, I think apt-get install mongodb or mongodb-10gen will "just work" and install a 32-bit mongo server on a 32-bit linux distro, or a 64-bit mongo server on a 64-bit distro.

Which do you have? Try this:

$ arch

That tells me I'm running 64-bit linux. So I can choose to run either 32-bit mongo or 64-bit mongo. If there were a "32" in there, I'd be running a 32-bit linux distro, and could only run 32-bit mongo atop it.

Now, take all this with a grain of salt, as I personally use apt-get for practically everything except mongodb, which I manage several versions of concurrently.

So, I find it simpler and more predictable to just go to the 10gen distributions page, and download and untar the version I want. After that, executing the right bin/mongod just works right out of the box.

Hope this helps!

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hey thanks! i'll try and untar the other mongo distro, i used apt-get so it got the 32 bit version since i have an i686 (32 bit os though) machine. hopefully it works out, i have 9+ million records in this database that i want to use for this project.. – Ben Nelson Mar 20 '13 at 19:45
9M records -- no sweat! :) You will need a 64-bit OS though to run 64-bit mongod. – dampier Mar 20 '13 at 19:52
Or use a cloud service like and be rid of such nonsensical distinctions. ( full disclosure: i work at MongoLab. :) – dampier Mar 20 '13 at 19:55
ha, can you hook me up with 4gb fo free?! lol – Ben Nelson Mar 20 '13 at 20:08
i have a question though, is it possible to run a virtual machine with 64 bit ubuntu on an ubuntu box with 64 bit mongodb installed on that? i dont wanna re install my operating system... – Ben Nelson Mar 20 '13 at 20:09

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