Error making Oracle connection from webservice

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Adam P. - 18 May 2006 20:15 GMT

I have written a test method that opens a connection to an Oracle database
and just does a Select query. The method works correctly from a Windows
application or from an ASP.NET web page. But when I run the same method from
a ASP.NET Web Service, an exception occurs with the message
"System.Data.OracleClient requires Oracle client software version 8.1.7 or
greater."

I'm have the Oracle 9i client software installed on the server running the
webservice.

I've found some other posts that offer the solution of re-applying Read &
Execute permissions on the ORACLE_HOME directory for the Authenticated Users
group. I've followed these steps, and gave the ASPNET account the
permissions as well, but the exception still occurs.

It's very strange because the same code is successful from an ASP.NET web
page, but not from a web service.

Any ideas on what's causing this to be a problem only for web services?

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Steven Cheng[MSFT] - 19 May 2006 07:25 GMT

Thank you for posting.

From your description, one of your ASP.NET webservice application is
encountering some error when try accessing Oracle database. Also, the same
code works correctly in other winform and ASP.NET (web page based)
application correct?

Based on my experience, the "System.Data.OracleClient requires Oracle
client software version 8.1.7 or greater." is possibly caused by permission
issue. And for your scenario, the same code works in winform application ,
this also indicate such problem. As for the ASP.NET web page
application(which also works for the oracle accessing code), it is using
the same security setting (in IIS and ASP.NET) with the webservice
application?

Regards,

Steven Cheng
Microsoft Online Community Support

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Adam P. - 19 May 2006 22:30 GMT

Thanks for your response Steven. I found the cause of the problem yesterday,
and you are correct it was a permission problem.

I had re-applied the Read & Execute on the ORACLE_HOME directory for
Authenticated Users and it was set to "Apply To = This folder, subfolders and
files". Apparently it didn't apply correctly, or I didn't follow the
instructions correctly, because the oci.dll which is file in one of the
subfolders didn't have any permissions set for the Authenticated Users group.

> Thank you for posting.
>
[quoted text clipped - 28 lines]
> (This posting is provided "AS IS", with no warranties, and confers no
> rights.)

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Steven Cheng[MSFT] - 22 May 2006 04:14 GMT

Thanks for your followup.

Glad that you've figured it out.

Have a good day!

Regards,

Steven Cheng
Microsoft Online Community Support

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When responding to posts, please "Reply to Group" via your newsreader so
that others may learn and benefit from your issue.

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This posting is provided "AS IS" with no warranties, and confers no rights.

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(This posting is provided "AS IS", with no warranties, and confers no
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Error making Oracle connection from webservice

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