在WindowsServer2008R2

msvcr80.dll 
tnsnames.ora
d:\oracle\product\11.2.0\dbhome_1\BIN\msvcr80.dll ,D:\oracle\product\11.2.0\dbhome_1\NETWORK\ADMIN\tnsnames.ora

将上面两个文件拷贝覆盖 instantClient 文件夹中

在C:\Program Files (x86)\PLSQL Developer（PLSQL安装目录）中新建 plsqldev.bat

 

内容为：

 

@echo off

set path=F:\WinX64Data\InstanceClient\instantclient_11_2

set ORACLE_HOME=F:\WinX64Data\InstanceClient\instantclient_11_2

 

set TNS_ADMIN=F:\WinX64Data\InstanceClient\instantclient_11_2

set NLS_LANG=AMERICAN_AMERICA.ZHS16GBK

start plsqldev.exe

F:\WinX64Data\InstanceClient\instantclient_11_2  地址为instantClient文件夹地址

 

运行bat文件成功，登陆进去，修改 tools->preferences  OracleHome  OCI library 地址 F:\WinX64Data\InstanceClient\instantclient_11_2