plsql连接oracle方法

1：PLSQL Developer安装

2：解压instantclient

3：设置instantclient 相关的环境变量

4：新增sqlnet.ora文件

内容为

# sqlnet.ora Network Configuration File: E:\app\limn\product\11.1.0\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= (NONE)


NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)

5：新增tnsnames.ora文件

内容为

# tnsnames.ora Network Configuration File: E:\app\limn\product\11.1.0\db_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.




1.1.7.88 =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 1.1.7.88)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = TEST)
      (SERVICE_NAME = TEST)
    )
  )
1.1.2.26 =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 1.1.2.26)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = ORCL11G)
      (SERVICE_NAME = ORCL11G)
    )
  )
1.1.2.28 =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 1.1.2.28)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = orcl)
      (SERVICE_NAME = orcl)
    )
  )