Set up the ORACLEHOME environment variable to point to the directory where the Oracle database client software is installed. Set the variable on the admin server and each non-admin server. Log on to the application server. On Microsoft Windows, log on as a user with administrative privileges and full access to the local server. Stack Exchange Network. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Visit Stack Exchange. PLSQL Developer8连接Oracle 10g X64版报错的解决. PLSQL Developer8连接Oracle 10g X64版时报错：Could not initialize 'C:oracleproduct10.2.0client1binoci.dll'，本文提供了这一错误的解决方法，让我们来一起学习吧。 作者：xiaoziteng 来源：CSDN博客 2011-07-12 17:20.

1. Oracle Client Not Properly Installed Oracle Home Key Oracle Home Directory
2. Initialization Error Oracle Client Not Properly Installed Oraclehomekey Oracle Home Dir

Hello friends..

1.今天新装了oracle 打开pl/sql时报出了这个错误SQL.Net not properly installed OracleHomeKey:SOFTWAREORACLEPL/SQL Developer - (Not logged on)-. SQL.Net not properly installed OracleHomeKey:SOFTWAREORACLE,运维网. Hello I cannot create an oracle connection with the database browser. I keep getting 'Initialization error' SQL.Net not properly installed' OracleHomeKey.

If you are using PLSQL developer to connect to the ORACLE database may have faced the problem 'SQL*Net not properly installed

Oracle Client Not Properly Installed Oracle Home Key Oracle Home Directory

'.
This problem occur beacause ORACLE_HOME and the oci.dll path location may not have been configured in the preferences.
To do this, go to Tools>Preferences.
Now set the Oracle Home as the location of the ORACLE_HOME variable or where the Oracle is installed. In my case it is:
C:OracleDataBaseproduct10.2.0db_1
After this set the oci.dll file location just under the Oracle Home text field.In my case it is:
C:OracleDataBaseproduct10.2.0db_1binoci.dll
click Apply>OK
Now restart the PLSQL developer. This should solve the problem.
Cheers..

PL/SQL Developer
---------------------------
Initialization error
SQL*Net not properly installed

OracleHomeKey:
OracleHomeDir:

（方法一）下载 ok！

http://download.csdn.net/detail/reginadeng/5857081#comment

（方法二）官方下载

下载32位客户端，配置进navicat中

下载地址：http://www.oracle.com/technetwork/topics/winsoft-085727.html

第1步：在上述地址中下载文件：instantclient-basic-nt-11.2.0.3.0.zip

第2步：解压此安装包，并将解压出的文件合并到：D:appDavidproductinstantclient_11_2

第3步：打开Navicat，选择工具→选项→其他→OCI，

设置OCI library为：D:appDavidproductinstantclient_11_2oci.dll

设置SQL *plus为：D:appDavidproduct11.2.0dbhome_1BINsqlplus.exe

点击确定。

第4步：测试成功。

pl/sql> Tools>Preferences>Oracle>Connection> like this. then is ok!!

OracleHomeKey: D:appOracleAdministratorproduct11.2.0
OracleHomeDir:D:appOracleinstantclient-basic-nt-11.2.0.3.0instantclient_11_2oci.dll

D:appAdministratorproduct11.2.0dbhome_1BINoci.dll

D:oracleappAdministratorproduct11.2.0client_1instantclientoci.dll

也可以在pl/sql的安装目录下D:Program Files (x86)PLSQL DeveloperPreferencesAdministratordefault.ini

[Preferences]
CheckConnection=True
SelectedHome=D:appOracleAdministratorproduct11.2.0
OCIFile=D:appOracleAdministratorproduct11.2.0dbhome_1binoci.dll

Initialization Error Oracle Client Not Properly Installed Oraclehomekey Oracle Home Dir

改成自己在路径。

oracle 配置监听程序

Net Configuration Assistant

system，127.0.0.1:1521/orcl