2019-11-10 admin


什么是loopback-oracle-installer,Loopback Oracle Binary Installer



The Oracle connector version 3.0.0 or above depends on the oracledb module as the Node.js driver for Oracle databases. Since oracledb is a C++ add-on, the installation requires C++ development tools to compile and build the module from source code. For more information, see Installing compiler tools.

At runtime, strong-oracle also requires dynamic libraries from  Oracle Database Instant Client.

The loopback-oracle-installer module takes care of the binary dependencies and simplifies the whole process.

The installer automatically downloads and extracts the prebuilt oracledb to the /loopback-connector-oracle/node_modules directory and Oracle Database Instant Client into <UserHomeDirectory>/oracle-instant-client. If a prebuilt bundle does not exist for your client platform and Node version, the installer prompts you to install Oracle prerequisites. For more information, see Installing node-oracledb.

Once you’ve installed the Oracle prerequisites, re-install the Oracle connector by entering following command:

$ npm install loopback-connector-oracle --save

This internally executes the npm install oracledb command.


If you have problems installing loopback-connector-oracle, make sure this symbolic link exists:

libclntsh.dylib -> libclntsh.dylib.11.1

Make sure you’ve set the following environment variables (for example on OS X):

$ export OCI_LIB_DIR=$HOME/oracle-instant-client
$ export OCI_INC_DIR=$HOME/oracle-instant-client/sdk/include

If a prebuilt bundle does not exist for your client platform and Node version, and you have installed Oracle pre-requisites as described in Installing node-oracledb, then set the environment variables as follows:

$ export OCI_LIB_DIR=/opt/oracle/instantclient
$ export OCI_INC_DIR=/opt/oracle/instantclient/sdk/include

Post-installation setup

{% include warning.html content="Before you run the application, you MUST configure the environment variable depending on the target platform to make sure the dynamic libraries from Oracle Instant Client are available to your Node process. " %}

MacOS X or Linux

Enter this command to set the LD_LIBRARY_PATH environment variable:

$ export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$HOME/oracle-instant-client"

If a prebuilt bundle does not exist for your client platform and Node version, and you have installed Oracle prerequisites as per Installing node-oracledb, then set the environment variables as follows:



On Linux systems, the libaio library is required. If it is not present, you must install it as follows:


$ sudo apt-get install libaio1


$ sudo yum install libaio


Set the PATH environment variable for the logged-in user. Note however that the PATH setting will NOT be effective immediately. You must activate it using one of the methods below:

  1. Log off the current user session and log in again.
  2. Follow these steps to reset environment variables:
    • Open Control Panel --> System --> Advanced System Settings --> Environment Variables.
    • Examine the Path under User variables, and click OK to activate it.
    • Open a new Command Prompt then enter the ‘path’ command to verify.

Installation behind a proxy server

{% include important.html content=" This feature is supported by loopback-oracle-installer vesion 1.1.3 or later. " %}

If your system is behind a corporate HTTP/HTTPS proxy to access the internet, you must set the proxy for npm before running npm install.

For example,

$ npm config set proxy http://proxy.mycompany.com:8080
$ npm config set https-proxy http://https-proxy.mycompany.com:8080

If the proxy URL requires username/password, use the following syntax:

$ npm config set proxy http://youruser:yourpass@proxy.mycompany.com:8080
$ npm config set https-proxy http://youruser:yourpass@https-proxy.mycompany.com:8080

You can also set the proxy as part of the npm command as follows:

$ npm --proxy=http://proxy.mycompany.com:8080 install
$ npm --https-proxy=http://https-proxy.mycompany.com:8080 install

NOTE: npm’s default value for proxy is from the HTTP_PROXY or http_proxy environment variable. And the default value for https-proxy  is from the HTTPS_PROXY, https_proxy, HTTP_PROXY, or http_proxy environment variable. So you can configure the proxy using environment variables too.

Linux or Mac:

HTTP_PROXY=http://proxy.mycompany.com:8080 npm install


set HTTP_PROXY=http://proxy.mycompany.com:8080
npm install


转载请注明:文章转载自 JavaScript中文网 [https://www.javascriptcn.com]