Oracle Instant Client 配置方法
从Oracle网站下载对应版本的Instant Client，以10.2.0.4为例，包含以下几个部分：
instantclient-basic-win32-10.2.0.4.zip
instantclient-jdbc-win32-10.2.0.4.zip
instantclient-odbc-win32-10.2.0.4.zip
instantclient-sdk-win32-10.2.0.4.zip
instantclient-sqlplus-win32-10.2.0.4.zip
其中instantclient-basic-win32-10.2.0.4.zip是必须的。
方法一：
1.解压到D:/instantclient_10_2
2.将D:/instantclient_10_2增加到PATH环境变量中
3.增加以下环境变量：
TNS_ADMIN=D:/instantclient_10_2
NLS_LANG=SIMPLIFIED CHINESE_CHINA.ZHS16GBK (*)
ORACLE_HOME=D:/instantclient_10_2 (*)
(*)：可选
4.编辑tnsnames.ora设置本地NET服务名
使用sqlplus进行测试：
sqlplus 用户名/密码@本地NET服务名
方法二：
1.解压至D:/instantclient_10_2/BIN中，并建立D:/instantclient_10_2/NETWORK/ADMIN目录
2.编辑注册表ORA.REG文件：
===============================
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE/SOFTWARE/ORACLE]
"inst_loc"="C://Program Files//Oracle//Inventory"
[HKEY_LOCAL_MACHINE/SOFTWARE/ORACLE/KEY_OraClient10g_home1]
"ORACLE_HOME"="D://instantclient_10_2"
"ORACLE_HOME_NAME"="OraClient10g_home1"
"ORACLE_GROUP_NAME"="Oracle - OraClient10g_home1"
"ORACLE_BUNDLE_NAME"="Enterprise"
"NLS_LANG"="TRADITIONAL CHINESE_TAIWAN.ZHT16MSWIN950"
"ORACLE_HOME_KEY"="SOFTWARE//ORACLE//KEY_OraClient10g_home1"
===============================
3.双击导入注册表
4.编辑oracle.key文件，添加一行SOFTWARE/ORACLE/KEY_OraClient10g_home1，对应于ORA.REG中的键。
5.添加D:/instantclient_10_2/BIN到PATH环境变量中
6.添加sqlnet.ora文件到D:/instantclient_10_2/NETWORK/ADMIN中，包含如下两行：
SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
7.添加tnsnames.ora文件到D:/instantclient_10_2/NETWORK/ADMIN中
tnsnames.ora范例：
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
)
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
)
)
MYORA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = MYDB)
)
)