db.repairDatabase()
db.resetError()
db.runCommand(cmdObj) run a database command. if cmdObj is a string, turns it into { cmdObj
: 1 }
db.serverStatus()
db.setProfilingLevel(level,
db.setWriteConcern(
db.unsetWriteConcern(
db.setVerboseShell(flag) display extra information in shell output
db.shutdownServer()
db.stats()
db.version() current version of the server
> db.dropDatabase();
{ "dropped" : "toto", "ok" : 1 }
>
8 数据还原
| mongorestore -h localhost:27017 -d toto -directoryperdb F:/beifeng/toto -h:MongoDB所在服务器地址，例如：127.0.0.1，当然也可以指定端口号：127.0.0.1:27017 -d:需要备份的数据库实例，例如test -o:备份的数据存放位置，当然该目录需要提前建立，在备份完成后，系统自动在dump目录下建立一个test目录，这个目录里面存放数据库实例的备份数据。 |
| C:\Users\to-to> mongorestore -h localhost:27017 -d toto -directoryperdb F:/beifeng/toto connected to: localhost:27017 2014-10-15T23:19:11.071+0800 F:/beifeng/toto\c3.bson 2014-10-15T23:19:11.071+0800 going into namespace [toto.c3] 2014-10-15T23:19:14.009+0800 Progress: 5740200/54000000 10% (bytes) 2014-10-15T23:19:17.010+0800 Progress: 10125000/54000000 18% (bytes) 2014-10-15T23:19:20.010+0800 Progress: 15660000/54000000 29% (bytes) 2014-10-15T23:19:23.011+0800 Progress: 22528800/54000000 41% (bytes) 2014-10-15T23:19:26.013+0800 Progress: 29586600/54000000 54% (bytes) 2014-10-15T23:19:29.013+0800 Progress: 36752400/54000000 68% (bytes) 2014-10-15T23:19:32.000+0800 Progress: 43372800/54000000 80% (bytes) 2014-10-15T23:19:35.001+0800 Progress: 50284800/54000000 93% (bytes) 1000000 objects found 2014-10-15T23:19:36.579+0800 Creating index: { key: { _id: 1 }, name: "_id_", ns: "toto.c3" } 2014-10-15T23:19:36.641+0800 Creating index: { unique: true, key: { age: 1 }, name: "age_1", ns: "toto.c3" } 2014-10-15T23:19:41.440+0800 F:/beifeng/toto\cap1.bson 2014-10-15T23:19:41.440+0800 going into namespace [toto.cap1] 2014-10-15T23:19:41.440+0800 Created collection toto.cap1 with options: { "create" : "cap1", "cap ped" : true, "size" : 4096, "max" : 100 } 53 objects found 2014-10-15T23:19:41.440+0800 Creating index: { key: { _id: 1 }, name: "_id_", ns: "toto.cap1" } 2014-10-15T23:19:41.440+0800 F:/beifeng/toto\cap2.bson 2014-10-15T23:19:41.440+0800 going into namespace [toto.cap2] 2014-10-15T23:19:41.440+0800 Created collection toto.cap2 with options: { "create" : "cap2", "cap ped" : true, "size" : 4096, "max" : 100 } file F:/beifeng/toto\cap2.bson empty, skipping 2014-10-15T23:19:41.456+0800 Creating index: { key: { _id: 1 }, name: "_id_", ns: "toto.cap2" }
C:\Users\to-to>
|
9 导入导出：
用到的应用mongoexport,mongoimport
| mongoexport –h dhost –d dbname –c collectionName –o output 参数说明： -h 数据库地址 -d 指明使用的库 -c 指明要导出的集合 -o 指明要导出的文件名 dname:表示要导出的数据库 collectionName:表示导出哪个集合 output:表示导出到的位置。 |
| C:\Users\to-to>mongoexport -h localhost:27017 -d toto -c c3 -o f:/beifen/c3.txt connected to: localhost:27017 exported 1000000 records
C:\Users\to-to> 同样可以数据导出到doc中 |
| 数据导入： mong |
