windows7 64bit
PL/sql v9.0
详细错误信息
Initialization error
Could not initialize "C:\oracle\product\11.2.0\dbhome_1\bin\oci.dll"
Make sure you have the 32 bits Oracle Client installed.
OCIDLL forced to C:\oracle\product\11.2.0\dbhome_1\bin\oci.dll
LoadLibrary(C:\oracle\product\11.2.0\dbhome_1\bin\oci.dll) returned 0
问题原因
安装完后Oracle的 oci.dll 是64位的，而32位应用程序 PLsql Developer 无法加载。
解决方案
1. 从
http://www.oracle.com/technetwork/database/features/instant-client/index-097480.html 下载Oracle Client Package。 我下载的是Instant Client for Microsoft Windows (32-bit) 【instantclient-basic-nt-11.2.0.2.0.zip】
2. 将 instantclient-basic-nt-11.2.0.2.0.zip 解压至oracle安装目录下 E:\oracle\installdir\product,
3. 设置环境变量
TNS_ADMIN=E:\oracle\installdir\product\11.2.0\dbhome_1\NETWORK\ADMIN
