安装了Oracle11g整整数据库，以前正Oracle都是安装好修改配置NET Manager就可以连接了。可是今天出现了一点小意外,这里总结一下。

(一) 安装检查的问题
在Win7中安装Oracle11g 企业版，在安装的过程中出现一个问题:

复制代码 代码如下:

Environment variable: "PATH" - This test checks whether the length of the environment variable "PATH" does not exceed the recommended length.
预期值
: 1023
实际值
: 0
错误列表:
- PRVF-3916 : Environment variable name "PATH" is not set on node "ywl-PC" - Cause: Environment variable value could not be determined. - Action: Ensure that the environment variable is set and access permissions for the Oracle user allow access to read the environment variables. Restart the installer after correcting the setting for environment variable.

复制代码 代码如下:

# listener.ora Network Configuration File: D:\Oracle11g\Administrator\product\11.2.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = D:\Oracle11g\Administrator\product\11.2.0\dbhome_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:D:\Oracle11g\Administrator\product\11.2.0\dbhome_1\bin\oraclr11.dll")
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
)
)
ADR_BASE_LISTENER = D:\Oracle11g\Administrator