超详细解决 PLSQL下拉数据库"空白"

1.下载对于oracle数据库对于版本的instantclient_11_2

oracle11g下载地址：https://www.oracle.com/technetwork/topics/winx64soft-089540.html

2.将文件解压出来D:Documentsplsqldocinstantclient_11_2

3.在D:Documentsplsqldocinstantclient_11_2下新建tnsnames.ora 文件。路径D:Documentsplsqldocinstantclient_11_2 nsnames.ora

4.新建 tnsnames.ora 文件里面加入

-----------------------------分割线----------------------------------------------

# tnsnames.ora Network Configuration File: D:Documentsplsqldocinstantclient_11_2 etworkadmin nsnames.ora
# Generated by Oracle configuration tools.

ORCL =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )
  
ORCL2 =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = IPHOME )(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = orcl)
    )
  )
-----------------------------分割线----------------------------------------------

5.IPHOME数据库所在的地址，本机填localhost

6.之后在 计算机——属性——高级系统设置——高级——环境变量——系统变量，中新建

变量名：TNS_ADMIN

变量值：D:Documentsplsqldocinstantclient_11_2

变量值写填自己 tnsnames.ora 文件所在的路径

7.修改PLSQL查询结果乱码（？？？）

变量名：NLS_LANG

变量值：SIMPLIFIED CHINESE_CHINA.ZHS16GBK

8.系统变量   —— Path中加入D:Documentsplsqldocinstantclient_11_2

instantclient_11_2对于自己电脑所在的路径

9.PLSQL中——工具——首选项——连接

ORCALE中目录：D:Documentsplsqldocinstantclient_11_2

OCI库：D:Documentsplsqldocinstantclient_11_2oci.dll