C # Oracle connection error: OCIEnvCreate failed. The Returned Code is

 

Processing certain data requires reading data from Oracle

Because there is not much Data, it is simple and convenient to directly use System. Data. OracleClient

Add references, write SQL statements in one breath, and report an error immediately when running

 

I have never seen this mistake...

Searching online...

 

It turns out that the default permissions on xp and above systems are insufficient...

You only need to run vs as administrator or directly run the generated application...

To prevent missing administrator permissions, we canAdd a program list file(I suddenly remembered that I wrote a blog many years ago to come to http://www.cnblogs.com/sun8134/archive/2009/10/30/1593025.html)

 

Then modify it to run as Administrator

 

Then, the system will automatically prompt you to have the administrator privilege.