oracle的sqlnet.ora、tnsnames.ora、listener.ora的常规配置

文件一：

sqlnet.ora 定义数据库连接时连接字符串的寻找方式，一般不用手动配置，默认就好，如

# sqlnet.ora Network Configuration File: E:\az\oracle\product\10.2.0\db_1\network\admin\sqlnet.ora
# Generated by Oracle configuration tools.

# This file is actually generated by netca. But if customers choose to 
# install "Software Only", this file wont exist and without the native 
# authentication, they will not be able to connect to the database on NT.

SQLNET.AUTHENTICATION_SERVICES= (NTS)

NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)

 文件二：

tnsnames.ora 定义本地，远程数据库连接信息，如：连接方式，连接地址，连接端口号，一般定义如下

# tnsnames.ora Network Configuration File: E:\az\oracle\product\10.2.0\db_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.

ORCL =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )

192.168.22.24 =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.22.24)(PORT = 1521))
    )
    (CONNECT_DATA =(SID = ORCL)
    )
  )

文件三：

listener.ora  一般书写如下 

# listener.ora Network Configuration File: E:\az\oracle\product\10.2.0\db_1\network\admin\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = E:\az\oracle\product\10.2.0\db_1)
      (PROGRAM = extproc)
    )
	(SID_DESC =  
      (GLOBAL_DBNAME = ORCL)  
      (ORACLE_HOME = E:\az\oracle)  
      (SID_NAME = ORCL)  
    )  
  )

LISTENER =  
  (DESCRIPTION_LIST =  
    (DESCRIPTION =  
      (ADDRESS = (PROTOCOL = TCP)(HOST = Leeo-PC)(PORT = 1521))  
    )  
  )