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# mongo
MongoDB shell version: 1.6.4
Fri Mar 16 11:55:46 *** warning: spider monkey build without utf8 support. consider rebuilding with utf8 support
connecting to: test

Mongo Server seems to handle the utf8 characters fine, as well as my php-mongo-client driver.

But when I try to query a record that has a utf8 character from the mongo command line client I get:

> db.Users.find({age:33});
error:non ascii character detected
Fri Mar 16 11:55:43 mongo got signal 11 (Segmentation fault), stack trace: 

Fri Mar 16 11:55:43 0x440b50 0x3664c302d0 0x3f47e7b6e0 0x3f47e83bbd 0x3f47e254f3 0x3f47e25660 0x3f47e256ee 0x3f47e25792 0x3f47e2876e 0x4b031d 0x443b72 0x445476 0x3664c1d994 0x43fd39
 mongo(_Z12quitAbruptlyi+0x3b0) [0x440b50]
 /lib64/ [0x3664c302d0]
 /usr/lib64/ [0x3f47e7b6e0]
 /usr/lib64/ [0x3f47e83bbd]
 /usr/lib64/ [0x3f47e254f3]
 /usr/lib64/ [0x3f47e25660]
 /usr/lib64/ [0x3f47e256ee]
 /usr/lib64/ [0x3f47e25792]
 /usr/lib64/ [0x3f47e2876e]
 mongo(_ZN5mongo7SMScope4execERKSsS2_bbbi+0xed) [0x4b031d]
 mongo(_Z5_mainiPPc+0x14a2) [0x443b72]
 mongo(main+0x26) [0x445476]
 /lib64/ [0x3664c1d994]
 mongo(__gxx_personality_v0+0x269) [0x43fd39]

Any ideas or suggestions would be welcome

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up vote 3 down vote accepted

The mongo version 1.6.4 was installed by the package management system, which includes the mongo init scripts.

The solution I came up with was to download the newest Mongo(2.0.3) binaries from Then I replaced all the binaries from the rpm /usr/bin with the ones I downloaded.

Everything now works perfectly!

share|improve this answer
Michael - if you want a package management solution with the latest version, 10gen (the creators of MongoDB) have their own repos: or – Adam C Mar 22 '12 at 11:14

Just had the same issue. MongoDB shell version: 1.8.2 on Ubuntu (EC2)

> db.tweets.find();

error:non ascii character detected

Checked which version of MongoDB I was running by issuing the command:

$ mongod --version

db version v1.8.2, pdfile version 4.5 - Wed Oct 24 15:43:13 git version: nogitversion

Confirm if mongo is currently running:

$ ps -deaf | grep mongod

mongodb 15408 1 0 Jun06 ? 13:50:00 /usr/bin/mongod --config /etc/mongodb.conf

To Shutdown MongoDB

$ ./mongo

> use admin

> db.shutdownServer()

server should be down...

Then upgraded following these instructions: How to Install MongoDB on Ubuntu

Add the 10 Gen (creators of MongoDB) public key to apt-get so you trust their package:

$ sudo apt-key adv --keyserver --recv 7F0CEB10

$ echo "deb dist 10gen" >> /etc/apt/sources.list.d/10gen.list

Update your packages:

$ sudo apt-get update

install 10gen's MongoDB Debian/Ubuntu package:

$ sudo apt-get install mongodb-10gen

The following packages will be REMOVED: mongodb

The following NEW packages will be installed: mongodb-10gen

If you get an error, try:

$ apt-get autoremove

once you have the new version of MongoDB the "non ascii" character issue should be gone.

(p.s. I know this question relates to RHEL but people running other versions of Linux will come up against this issue so I thought a Ubuntu/Debian answer was relevant. Feel free to remove

share|improve this answer

Take a look at:

"SpiderMonkey does not use UTF-8 by default, so we enable before building."

So, you'll need to rebuild SpiderMonkey.

share|improve this answer
I had previously looked into this. However, being that I was on a production server I wanted minimal impact. – Michael Irey Mar 19 '12 at 18:23

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