I tried to install oracledb npm but i am getting below error.

[![enter image description here](https://i.stack.imgur.com/vnnF6.png)](https://i.stack.imgur.com/vnnF6.png)

**Already installed :**

* nodejs v6.11.0
* npm 3.10.10
* python 2.7
* visual studio 14
* instant client for oracle 64bit
* windows 10 64bit

**Environment variable in system**

* Path = C:\Oracle\instantclient
* Path = C:\Program Files (x86)\nodejs\
* Path = C:\Program Files (x86)\Java\jdk1.6.0\_11\bin
* Path = C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\bin
* OCI\_INC\_DIR = C:\Oracle\instantclient\sdk\include
* OCI\_LIB\_DIR = C:\Oracle\instantclient\sdk\lib\msvc
* Path = C:\Python27\

**ERROR :** 

```
C:\>npm install oracledb

> oracledb@1.13.1 install C:\node_modules\oracledb
> node-gyp rebuild

C:\node_modules\oracledb>if not defined npm_config_node_gyp (node "C:\Program Files (x86)\nodejs\node_modules\npm\bin\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node-gyp.js" rebuild )  else (node "" rebuild )
Traceback (most recent call last):
  File "C:\Program Files (x86)\nodejs\node_modules\npm\node_modules\node-gyp\gyp\gyp_main.py", line 16, in <module>
    sys.exit(gyp.script_main())
  File "C:\Program Files (x86)\nodejs\node_modules\npm\node_modules\node-gyp\gyp\pylib\gyp\__init__.py", line 545, in script_main
    return main(sys.argv[1:])
  File "C:\Program Files (x86)\nodejs\node_modules\npm\node_modules\node-gyp\gyp\pylib\gyp\__init__.py", line 538, in main
    return gyp_main(args)
  File "C:\Program Files (x86)\nodejs\node_modules\npm\node_modules\node-gyp\gyp\pylib\gyp\__init__.py", line 514, in gyp_main
    options.duplicate_basename_check)
  File "C:\Program Files (x86)\nodejs\node_modules\npm\node_modules\node-gyp\gyp\pylib\gyp\__init__.py", line 98, in Load
    generator.CalculateVariables(default_variables, params)
  File "C:\Program Files (x86)\nodejs\node_modules\npm\node_modules\node-gyp\gyp\pylib\gyp\generator\msvs.py", line 1900, in CalculateVariables
    generator_flags.get('msvs_version', 'auto'))
  File "C:\Program Files (x86)\nodejs\node_modules\npm\node_modules\node-gyp\gyp\pylib\gyp\MSVSVersion.py", line 434, in SelectVisualStudioVersion
    versions = _DetectVisualStudioVersions(version_map[version], 'e' in version)
KeyError: '2014'
gyp ERR! configure error
gyp ERR! stack Error: `gyp` failed with exit code: 1
gyp ERR! stack     at ChildProcess.onCpExit (C:\Program Files (x86)\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:305:16)
gyp ERR! stack     at emitTwo (events.js:106:13)
gyp ERR! stack     at ChildProcess.emit (events.js:191:7)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:215:12)
gyp ERR! System Windows_NT 10.0.10586
gyp ERR! command "C:\\Program Files (x86)\\nodejs\\node.exe" "C:\\Program Files (x86)\\nodejs\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"
gyp ERR! cwd C:\node_modules\oracledb
gyp ERR! node -v v6.11.0
gyp ERR! node-gyp -v v3.4.0
gyp ERR! not ok
npm ERR! Windows_NT 10.0.10586
npm ERR! argv "C:\\Program Files (x86)\\nodejs\\node.exe" "C:\\Program Files (x86)\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "install" "oracledb"
npm ERR! node v6.11.0
npm ERR! npm  v3.10.10
npm ERR! code ELIFECYCLE

npm ERR! oracledb@1.13.1 install: `node-gyp rebuild`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the oracledb@1.13.1 install script 'node-gyp rebuild'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the oracledb package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     node-gyp rebuild
npm ERR! You can get information on how to open an issue for this project with:
npm ERR!     npm bugs oracledb
npm ERR! Or if that isn't available, you can get their info via:
npm ERR!     npm owner ls oracledb
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     C:\npm-debug.log

```