卸载oracle后plsql数据库空白,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:\Documents\plsqldoc\instantclient_11_2

3.在D:\Documents\plsqldoc\instantclient_11_2下新建tnsnames.ora 文件。路径D:\Documents\plsqldoc\instantclient_11_2\tnsnames.ora

4.新建 tnsnames.ora 文件里面加入

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# tnsnames.ora Network Configuration File: D:\Documents\plsqldoc\instantclient_11_2\network\admin\tnsnames.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)

)

)

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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:\Documents\plsqldoc\instantclient_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:\Documents\plsqldoc\instantclient_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:\Documents\plsqldoc\instantclient_11_2

OCI库：D:\Documents\plsqldoc\instantclient_11_2\oci.dll

原文：https://www.cnblogs.com/jtlgb/p/12532167.html