MongoDB import and export example
In this tutorial, we show you how to backup and restore MongoDB with the commands : mongoexport and mongoimport.
1. Backup database with mongoexport
Few examples to show you how to use the mongoexport to back up the database.
Review some of the common use options.
$ mongoexport
Export MongoDB data to CSV, TSV or JSON files.
options:
-h [ --host ] arg mongo host to connect to ( <set name>/s1,s2 for
-u [ --username ] arg username
-p [ --password ] arg password
-d [ --db ] arg database to use
-c [ --collection ] arg collection to use (some commands)
-q [ --query ] arg query filter, as a JSON string
-o [ --out ] arg output file; if not specified, stdout is used
1.1 Export all documents (all fields) into the file “domain-bk.json“.
$ mongoexport -d webmitta -c domain -o domain-bk.json
connected to: 127.0.0.1
exported 10951 records
1.2 Export all documents with fields “domain” and “worth” only.
$ mongoexport -d webmitta -c domain -f "domain,worth" -o domain-bk.json
connected to: 127.0.0.1
exported 10951 records
1.3 Export all documents with a search query, in this case, only document with “worth > 100000” will be exported.
$mongoexport -d webmitta -c domain -f "domain,worth" -q '{worth:{$gt:100000}}' -o domain-bk.json
connected to: 127.0.0.1
exported 10903 records
1.4 Connect to remote server like mongolab.com, using username and password.
$ mongoexport -h id.mongolab.com:47307 -d heroku_app -c domain -u username123 -p password123 -o domain-bk.json
connected to: id.mongolab.com:47307
exported 10951 records
Review the exported file.
$ ls -lsa
total 2144
0 drwxr-xr-x 5 mkyong staff 170 Apr 10 12:00 .
0 drwxr-xr-x+ 50 mkyong staff 1700 Apr 5 10:55 ..
2128 -rw-r--r-- 1 mkyong staff 1089198 Apr 10 12:15 domain-bk.json
With
mongoexport, all exported documents will be in json format.
2. Restore database with mongoimport
Few examples to show you how to use the mongoimport to restore the database.
Review some of the common use options.
$ mongoimport
connected to: 127.0.0.1
no collection specified!
Import CSV, TSV or JSON data into MongoDB.
options:
-h [ --host ] arg mongo host to connect to ( <set name>/s1,s2 for sets)
-u [ --username ] arg username
-p [ --password ] arg password
-d [ --db ] arg database to use
-c [ --collection ] arg collection to use (some commands)
-f [ --fields ] arg comma separated list of field names e.g. -f name,age
--file arg file to import from; if not specified stdin is used
--drop drop collection first
--upsert insert or update objects that already exist
2.1 Imports all documents from file “domain-bk.json” into database.collection named “webmitta2.domain2”. All non-exists databases or collections will be created automatically.
$ mongoimport -d webmitta2 -c domain2 --file domain-bk.json
connected to: 127.0.0.1
Wed Apr 10 13:26:12 imported 10903 objects
2.2 Imports all documents, insert or update objects that already exist (based on the _id).
$ mongoimport -d webmitta2 -c domain2 --file domain-bk.json --upsert
connected to: 127.0.0.1
Wed Apr 10 13:26:12 imported 10903 objects
2.3 Connect to remote server – mongolab.com, using username and password, and import the documents from the local file domain-bk.json into remote MongoDB server.
$ mongoimport -h id.mongolab.com:47307 -d heroku_app -c domain -u username123 -p password123 --file domain-bk.json
connected to: id.mongolab.com:47307
Wed Apr 10 13:26:12 imported 10903 objects
References
About Author
mongodump
Export MongoDB data to BSON files.
options:
–help produce help message
-v [ –verbose ] be more verbose (include multiple times for more
verbosity e.g. -vvvvv)
–version print the program’s version and exit
-h [ –host ] arg mongo host to connect to ( /s1,s2 for
sets)
–port arg server port. Can also use –host hostname:port
–ipv6 enable IPv6 support (disabled by default)
-u [ –username ] arg username
-p [ –password ] arg password
–dbpath arg directly access mongod database files in the given
path, instead of connecting to a mongod server –
needs to lock the data directory, so cannot be used
if a mongod is currently accessing the same path
–directoryperdb if dbpath specified, each db is in a separate
directory
–journal enable journaling
-d [ –db ] arg database to use
-c [ –collection ] arg collection to use (some commands)
-o [ –out ] arg (=dump) output directory or “-” for stdout
-q [ –query ] arg json query
–oplog Use oplog for point-in-time snapshotting
–repair try to recover a crashed database
–forceTableScan force a table scan (do not use $snapshot)
mongorestore
Import BSON files to MongoDB data
usage: mongorestore [options] [directory or filename to restore from]
options:
–help produce help message
-v [ –verbose ] be more verbose (include multiple times for more
verbosity e.g. -vvvvv)
–version print the program’s version and exit
-h [ –host ] arg mongo host to connect to ( /s1,s2 for sets)
–port arg server port. Can also use –host hostname:port
–ipv6 enable IPv6 support (disabled by default)
-u [ –username ] arg username
-p [ –password ] arg password
–dbpath arg directly access mongod database files in the given
path, instead of connecting to a mongod server –
needs to lock the data directory, so cannot be used
if a mongod is currently accessing the same path
–directoryperdb if dbpath specified, each db is in a separate
directory
–journal enable journaling
-d [ –db ] arg database to use
-c [ –collection ] arg collection to use (some commands)
–objcheck validate object before inserting
–filter arg filter to apply before inserting
–drop drop each collection before import
–oplogReplay replay oplog for point-in-time restore
–keepIndexVersion don’t upgrade indexes to newest version
Hi,
FYI, using mongoexport, you can not export data to TSV format
my query:
If we insert a record, and export it to csv
and import the exported file again, the object notations are failed
it has double quote issues….
any ideas !
i want to import data to mongodb in ubuntu server from windows
“With mongoexport, all exported documents will be in json format.”
That is true till you decide to use –csv option.
With this option you can get output in csv format.
hi Mkyong,
i am trying this https://stackoverflow.com/questions/49319053/importing-huge-oracle-data-into-mongodb but the program is damn slow… can you please guide me on best way to optimize this. also is there any way to ingest directly from oracle database to mongodb using mongoimport ???