MongoDB not able to start :cause of : exception in initAndListen: 12596 old lock file, terminating

Some times when you start the mongo db server then it is not able to start because of following exception:

exception in initAndListen: 12596 old lock file, terminating

Solution

In this case just use the mongo db "--repair" command fix this issue.

1. Go to bin directory in mongo db folder i.e E:\MongoDB\bin
2. Delete the mongod.lock file. (this step is optional)
3. Now open the command prompt and run this command i.e. "E:\mongodb\bin>mongod.exe --repair --dbpath=E:\mongoData\data\db"
4. Now start the mongo db service.
5. Verify that mongo db is running successfully.