PLSQL Developer or Toad does not install the Oracle client to connect to the database

PLSQL Developer or Toad does not install the Oracle client to connect to the database. In order to simplify the use of Oracle on a personal computer and avoid occupying unnecessary resources, you can not install the Oracle client.
The method is to use Oracle InstantClient to connect to the oracle database www.2cto.com 1 to download the corresponding program. Listen (34,742,358 bytes) Then instantclient-basic-win32-10.2.0.3-20061115.zip WIN64-bit system download link: http://www.oracle.com/technology/global/cn/software/tech/oci/instantclient/htdocs/winsoft.html?_template=/ocom/print Www.2cto.com 2 decompress the Oracle Instatnt Client. For example, to D:/instantclient_10_2 3 environment variable Configuration: "Control Panel"-"System"-"advanced"-"environment variable"-"system variable" add NLS_LANG = AMERICAN_AMERICA.ZHS16GBK (or SIMPLIFIED CHINESE_CHINA.ZHS16GBK) TNS_ADMIN = D: \ instantclient_10_2 www.2cto.com LD_LIBRARY_PATH = D: \ region = D: \ instantclient_10_2 add D: \ instantclient_10_2 to the end of the Path variable (Note: different paths are separated by semicolons: \ instantclient_10_2 Add the following content to the file named tnsnames. ora 5 can download the separate Oracle SDK and Oracle SQL PLUS to the installation directory. decompress the package to run the file content and format tnsnames attached to www.2cto.com. ora # D:/instantclient_10_2/tnsname. ora www.2cto.com mydb1 = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP) (HOST = 192.168.0.47) (PORT = 1521) (CONNECT_DATA = (SERVER = dedicated) (SERVICE_NAME = mydb1) from JACKY. hao's column