Installing Oracle Client on Windows

Installing Oracle Client on Windows

Installing Oracle Client on Windows

1- What is Oracle Client? 

 If you have 2 computers
A and
B. Computer
B is  installed
Oracle Database. Standing at computer
A, if you want to work with
Oracle database at  Computer
B, Computer
A needs to be installed
Oracle Client.
Oracle Client is part of
Oracle Database software. It is not a database, but, it helps talk with an 
Oracle database.
Oracle Database  itself is a
Oracle Client.

2- Download Oracle Client

The latest version of
Oracle Client is
12.x, which can work with any different versions of
Oracle Database (10, 11, 12), therefore, you should download this version.
To download the
Oracle Client, visit the following address
Here, you have two choices for downloading such as
Oracle Client 32bit or
Oracle Client 64bit. If you want to work with the visual tools such as  
PL/SQL Developer, Toad, .. you should download and install
32bit version.
Here, I will download the
32bit version. Downloading requires you to log in with an account. If you do not have an account, you can register for free.
Downloaded results:

3- Installing Oracle Client 

 Extract the file downloaded in the above step by you.
You have 4 options to install:

Instant Client

This installation type installs only the shared libraries required by
Oracle Call Interface applications that use the
Instant Client feature. It requires much less disk space than the other
Oracle Client installation types.
Note: If you select
Instant Client install type, then you cannot apply
software updates during the installation session. To download and apply
the latest software updates, you must select
Runtime, or
Custom install type.


This installation type installs the
Oracle Enterprise Manager Standalone Console, Oracle networking services, and client software that enables applications or individuals to connect to an
Oracle database. It also installs development tools that you can use to develop applications.


This installation type installs a limited number of components for a database application user. With the exception of
Oracle Enterprise Manager Standalone Console, it installs the same components as the Administrator installation type.


This installation type allows you to select the client applications and utilities that you want to install.
  • Oracle base: C:/oracleclient_12
Oracle Client has been installed successfully.

4- Configuring TNSNAME


# tnsping server-host:1521/sid-id
# Example:
To be able to connect to a database located in another computer, you need to configure
TNSNAME. Create a file named
tnsnames.ora located in the  folder:
  • C:oracleclient_12product12.2.0client_1networkadmin
    (ADDRESS = (PROTOCOL = TCP)(HOST = your_server_ip )(PORT = 1521))
      (SERVICE_NAME = db12c)

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