Crystal Report Oracle Logon Problem

Question

Hi,
We are using Webforms for launching the reports.  When we tried to launch the reports system is prompting for logon information.  It states "The report you requested requires further information." followed by text box having Server Name,  Database Name, User Name, Password and use integrated security(checkbox). 
We are using Oracle backend for connecting the database.  Crystal Report RPT is designed using the OLEDB ADO (Database Type) and the provider is u201CMSDAORAu201D. 
The same report is working fine when the Internet service manager identity is set as u201CLocal Systemu201D reported problem occurs when the identity is set as u201CNetwork Serviceu201D.  How to over come this issue.
Crystal Version : Crystal Reports 2008 is installed
Operating System : Windows server 2003 standard edition
Oracle Version : Oracle 11g
Please Note : Report is fetching data from the crystal report designer in the preview.  There is no problem in oracle connectivity.
Code is available below
rpt.Load(@"D:\report\totaldetails_sub_sp_oracle.rpt");
CrystalDecisions.CrystalReports.Engine.Database crDb;
CrystalDecisions.CrystalReports.Engine.Tables crTables;
CrystalDecisions.CrystalReports.Engine.Table crTable;
TableLogOnInfo crTableLogOnInfo;
ConnectionInfo crConnInfo;
crDb = rpt.Database;
crTables = crDb.Tables;
crConnInfo = new CrystalDecisions.Shared.ConnectionInfo();
crConnInfo.ServerName = "< Oracle Service Name>";
crConnInfo.DatabaseName = "";
crConnInfo.UserID = "<Oralce User Name>";
crConnInfo.Password = "<Oracle Password>";
for (int i = 0; i < crTables.Count; i++)
         crTable = crTables<i>;
crTableLogOnInfo = crTable.LogOnInfo;
crTableLogOnInfo.ConnectionInfo = crConnInfo;
crTable.ApplyLogOnInfo(crTableLogOnInfo);
CrViewer.ReportSource = rpt;

Answer 1

Thanks a lot for replies ...
To use oracle client 32 bit on the x64 server may be a problem for the next times. And my project leader don't want to change oracle client version (x64). So I try to change my reports connections to ODBC type.
Now, I want to ask another question:
Firstly, I will test these changes on 32 bit. Later, I test it on 64 bit.
My report are created on Crystal reports 10, 32 bit. I change the connection type by using "Set Datasource Location" menu. I test this ODBC connection with my report on 32 bit platform. I can see the records on the Crystal Reports when I refresh my report. This is OKEY. ODBC connection is success on 32 bit.
But, in my project (this is an web application, and it is working 32 bit and 64 bit successfully), I can't see the records. I debuggged my project on 32 bit with Visual Studio. For this, I put some breakpoints on to the specific places. I watch that two records are taken from database. Everything is good. But when "reports.aspx" file opens, these records don't appear. Before changing connection type , this records were listed in my project on 32 bit.
For this, have you any ideas ?
Thanks ...