At my new gig, I am working on a project that is ASP.NET with an Oracle Database backend. Today I ran into an error.
Data provider internal error(-3000) [System.String]
What does this error mean? Heck if I know, its a generic error basically telling you that something is wrong with your connection to the database more than likely.
After troubleshooting code, the CSLA framework, more code, stored procs, queries, more code and testing everything I could think of, I decided it had to be something with the Oracle driver on my machine. I remembered back in the day when I worked for SCWH using Oracle 8 and having a hell of a time getting it to work if the driver was even a .1 release off, or if you were using the wrong driver.
Reinstalled the 10g client and Oracle Data Provider for .NET stuff and it worked. What a waste of time. Just another reason why I hate Oracle, and SQL Server is the way to go. No stupid dot releases of drivers that cause headaches. Granted MSFT used to have MDAC which was a major pain, but with .NET it just connects, and works.
Steve Novoselac's Blog 
4 replies on “.NET and Oracle – Match Made in Hell (Data provider internal error(-3000) [System.String])”
Don’t know if this applies but Oracle lists it as a bug that is fixed in the 11.1 version and they also list a workaround.
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You got a nice blog up there.Have a nice daymark______________________________________________Buy Aion Kinah | Cheap Aion kinah
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I despise Oracle too but unfortunately I’m stuck with it at my job. We just went through the huge pain of upgrading to 11G and are still experiencing this error randomly in our production ASP.NET apps. I miss MSSQL!
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Having the same problem today! Each day I am starting to hate it also.
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