mongodb can't start on windows?

Question

when i tried to start mongodb using the command "mongod.exe" on the command line, it throws the following error..

C:\mongodb-win32-x86_64-2.0.6\bin>mongod.exe
mongod.exe --help for help and startup options
Thu Aug 09 11:56:48 [initandlisten] MongoDB starting : pid=6892 port=27017 dbpat
h=/data/db 64-bit host=user4-PC
Thu Aug 09 11:56:48 [initandlisten] db version v2.0.6, pdfile version 4.5
Thu Aug 09 11:56:48 [initandlisten] git version: e1c0cbc25863f6356aa4e31375add7b
b49fb05bc
Thu Aug 09 11:56:48 [initandlisten] build info: windows sys.getwindowsversion(ma
jor=6, minor=1, build=7601, platform=2, service_pack='Service Pack 1') BOOST_LIB
_VERSION=1_42
Thu Aug 09 11:56:48 [initandlisten] options: {}
**************
old lock file: \data\db\mongod.lock.  probably means unclean shutdown,
but there are no journal files to recover.
this is likely human error or filesystem corruption.
found 3 dbs.
see: http://dochub.mongodb.org/core/repair for more information
*************
Thu Aug 09 11:56:48 [initandlisten] exception in initAndListen: 12596 old lock f
ile, terminating
Thu Aug 09 11:56:48 dbexit:
Thu Aug 09 11:56:48 [initandlisten] shutdown: going to close listening sockets..
.
Thu Aug 09 11:56:48 [initandlisten] shutdown: going to flush diaglog...
Thu Aug 09 11:56:48 [initandlisten] shutdown: going to close sockets...
Thu Aug 09 11:56:48 [initandlisten] shutdown: waiting for fs preallocator...
Thu Aug 09 11:56:48 [initandlisten] shutdown: lock for final commit...
Thu Aug 09 11:56:48 [initandlisten] shutdown: final commit...
Thu Aug 09 11:56:48 [initandlisten] shutdown: closing all files...
Thu Aug 09 11:56:48 [initandlisten] closeAllFiles() finished
Thu Aug 09 11:56:48 dbexit: really exiting now

i really cant start mongodb.. Help me to start mongodb as windows service and rectify the error. I already read the installation guide and followed the same but still throwing the error.

Answer 1

Delete the lock file \data\db\mongod.lock, and run mongod --repair.

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