ExecuteReader and large CLOB

Discussion of open issues, suggestions and bugs regarding ADO.NET provider for Oracle
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Posts: 3
Joined: Tue 17 Apr 2012 11:04

ExecuteReader and large CLOB

Post by KLGregor » Tue 26 Jun 2012 14:29

Hello. I have a problem getting big CLOB from procedure.

I have a procedure that returns CLOB data.

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                                           P_IS_FULL_SYNC IN INTEGER,
                                           P_XML_DATA OUT CLOB);
I am trying to get it with the next code

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using (OracleConnection oraConnection = new OracleConnection(GetConnectionString()))
                OracleCommand oraCommand = new OracleCommand("EL_DIC_SYNC.GET_LNK_SYNC_SERV_ENT_DATA", oraConnection);
                oraCommand.CommandType = CommandType.StoredProcedure;
                oraCommand.Parameters.Add("P_LINK_SYNC_SERV_ENT_ID", OracleDbType.Number, 85731, ParameterDirection.Input);
                oraCommand.Parameters.Add("P_IS_FULL_SYNC", OracleDbType.Number, 1, ParameterDirection.Input);
                oraCommand.Parameters.Add("P_XML_DATA", OracleDbType.Clob, ParameterDirection.Output);
                using (OracleDataReader oraDataReader = oraCommand.ExecuteReader(CommandBehavior.SequentialAccess))
                    // ...
but I am getting an exception OutOfMemory on

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How can I get big CLOB using OracleDataReader?

Devart Team
Posts: 2138
Joined: Wed 02 Nov 2011 09:44

Re: ExecuteReader and large CLOB

Post by Pinturiccio » Thu 05 Jul 2012 11:26

Currently we do not support output parameters loading without caching. We will investigate the possibility to add such feature, but there is no timeframe.

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