When you start MongoDB, the cmd window flashes past _mongodb

To facilitate startup of MongoDB, we typically form a Windows batch file (. bat)

The contents are as follows:
D:\mongo\bin\mongod–dbpath=d:\db
Format: The path of the mongod–db under bin in MONGO
The normal startup results are as follows:

But sometimes there is a flash after the start of the situation, the solution is as follows: the
D:\mongo\bin\mongod–dbpath=d:\db copied to CMD, there are some error prompts:
1, hard disk space is too small, need a hard drive to vacate part of the space (if you are just a normal start, and the hard disk download some of the data after this phenomenon, most likely this problem),
2. Delete the. lock file under DB file and restart the MONGO database.
3, to see if the access port of the database is occupied, the default is 27017 ports. Use Netstate-ano to view it under CMD.