PL/SQL Developer connecting a local 64-bit Oracle Database

First, go to Oracle's website to download an Oracle 11g Client (My 11g Oracle), but you need to apply for an Oracle account before you can download it.

Current: http://www.oracle.com/technetwork/topics/winsoft-085727.html

This is a green version of Oracle Client, so as long as it needs to be decompressed, it can be. Unzip the downloaded Oracle client file Instantclient-basic-win32-11.2.0.1.0.zip (note 32-bit). Then create a new network\admin directory under the extracted C:\instantclient_11_2 directory, create a new Tnsnames.ora file in the Admin directory, and add the database TNS.

ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP) (HOST = chiclewu-pc) (PORT = 1521))
(Connect_data =
(SERVER = dedicated)
(service_name = ORCL)
)
)

(Note: The Tnsnames.ora file can also be copied from the Network\admin directory of the Oracle database home directory, as well as the Sqlnet.ora.) Then determine whether the host configuration is correct, if host is the hostname, you need to remove the domain name after the hostname)

2. Configuring the Oracle Home and OCI libaray for PL/SQL developer

Enter the PL/SQL Developer in non-logon mode, designate the Oracle home path as the Oracle Client directory (C:\instantclient_11_2), and the OCI Libaray path to Oracle The Oci.dll (C:\instantclient_11_2\oci.dll) of the client directory.

Click "OK" and the configuration is now complete. Exit PL/SQL Developer.

3. Verifying Oracle Client

Open a new PL/SQL Developer, enter the user name and password, under the database option, you can see the TNS that has just been configured.

PL/SQL Developer connecting a local 64-bit Oracle Database