Running PL/SQL Stored Procedure from C# using ADO.net (PL/SQL Table Datatype)

Hi,

I am trying to run a third party PL/SQL stored procedure held on an Oracle database, using an ADO.net command in a C# application. However, I cannot match a PL/SQL Table datatype parameter in the stored procedure with any ADO.NET datatype.

Using OO4O in VBA I am able to create a table-parameter using OraDatabase.Parameters.AddTable. Is there any way of doing this in ADO.NET?

Thanks in advance...

 
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tgannettsAsked:
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chrisalexanderCommented:
Oh the pain... I just finished dealing with the issue of using OraTypes in C# and it hurt. Firstly, I believe that Oracle's native .NET provider called Oracle Data Provider (ODP.NET) supports PL/SQL table collections. Go to Oracle.com to download ODP.NET on your dev workstation. Secondly, if this doesn't work then things are going to get alittle messy because you will have to unbox OraTypes to OO4O types. I would recommend using VB.NET and OO4O to create a unit test case of manipulating the PL/SQL table collection. F10 through this block of code to observe the OO4O datatype of each variable. In C# you will have to declare variables of these datatypes (ie OraCollection ObjCol;). Because the RunTime is serverely type safe you will need to unbox the PL/SQL table collection item OraTypes to the OO4O datatypes.

Although Oracle bitches about not supporting OO4O with .NET and the cominterop penalty I have been able to get a web-based app working just fine using Object data types. Just be careful if you use OO4O connection pooling as it does NOT remove connections when shutting down the application; connections become inactive and require some Oracle admin sniping/killing skill.

P.S. log onto MetaLink and explore. Again, the techs are pretty bitchy about answering OO4O/C# related questions though.

Hope this helps,

Chris

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tgannettsAuthor Commented:
Thanks Chris,

I had a look at ODP, but we have Oracle 8i - Oracle 9i required.

As you suggested, I tried using OO4O in vb.net. The code I had already written in vba transferred nicely with little re-working required. (in fact with dbnull.value support it worked a lot better).

As far as C# is concerned, as a quick work around I have put all my vba code into a vb.net class library, and am referencing this from my C# application.
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