Connect Oracle 11g remote database using instantclient_11_2 and PL/SQL Developer Toolkit

Source: Internet
Author: User

1, first download instant Client to Oracle website:


Choose a different instant client version based on your operating system

Download back is a compressed file, extracted after the folder called: D:/instantclient_11_2. Put it in the directory you like. For example: d:/instantclient_11_2

2. Create a new directory network under the D:/instantclient_11_2 directory, create a new admin directory under the network directory, create a new file Tnsnames.ora in the Admin directory, and use a text editor to open and write the following:

(Address_list =
(Connect_data =
(service_name = mwdb)

First Yellow block: Indicates the local hostname that defines the remote server

Second yellow block: Remote DB instance Name

3. Add an environment variable named Tns_admin and the value is the path where the Tnsnames.ora file is located. For example, my machine is: d:/instantclient_11_2/network/admin

4. Set the Oracle language, add the environment variable Nls_lang, and the value is simplified Chinese_china. Zhs16gbk

If you do not know the Oracle language of the remote database, you can ssh or telnet to the remote machine, enter it at the command interface, and connect to the database using the command line.

SELECT * from Nls_instance_parameters;

View the value of Nls_language



5. Download and install the PL.SQL.Developer configuration app
Configure Tools->preferences->connection

Oracle Home

OCI Library


The PL/SQL developer in Chinese is


Oracle Home Directory


OCI Library


6, close PL/SQL Developer, restart Developer.

The hostname will appear in the PL/SQL developer list, enter the user name password, and you will be able to log in to the remote Oracle 11g database.

Supplemental Instant Client Instructions

Oracle Instant Client is an easy-to-support Oracle provider that supports multiple platforms. Available for download from the Oracle Web site for

Include the following:

Instant client Package-basic runs OCI, OCCI, and jdbc-oci all files required by the application.

Instant client Package-basic Lite: contains only English error messages and supports Unicode, ASCII, and Western European character sets only.

The Instant client package-jdbc Supplement adds Xa, internationalization, and rowset to JDBC.

Instant Client package-sql *plus contains sqlplus and required library files

Instant client PACKAGE-SDK The header files and examples needed to develop an Oracle application using Instant client Makefile

Instant client Package-odbc The libraries that are needed when using ODBC, not all platforms. Linux platform contains.

Basic and Basic lite must be selected in two, and other packages are optional. I downloaded Basic, JDBC Supplement, SQL *plus, SDK, ODBC. After decompression placed in a folder, in this folder to establish the file Tnsnames.ora, set the environment variables Ld_library_path and tns_admin point to the extracted directory, you can use Sqlplus.

I downloaded the instant client version for and tested the connection to Oracle and Oracle

Instant client does not include tnsping, Exp/imp, Rman, NETCA and other tools. If you need these tools, you will need to install Oracle client

Connect Oracle 11g remote database using instantclient_11_2 and PL/SQL Developer Toolkit

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