Oracle 10g on Windows server 2008 R2 - error : Logon failed. Details: ADO

Question

Hello,
I have installed Oracle 10g 64bit client on Windows 2008 R2 64bit server. I have installed Visual studio framework 2.0 and 3.5 on Application Server i.e. Windows 2008 R2 64bit Server.
But when i run report from server, it shows following error message :
*Logon failed. Details: ADO Error Code: 0x Source: ADODB.Connection Description: Provider cannot be found. It may not be properly installed. Error in File C:\Windows\TEMP\testreport {FE5A4BC0-DF74-4E58-87F1-0F203501A3FC}.rpt: Unable to connect: incorrect log on parameters.*
I have created report with design time connection with oracle 10g tables. It runs in my development machine. but when i deployed on windows 2008 r2 bit server, it raised above error. After that, i created another report with command instead of using design time database connection with table, it run on server smoothly.
So Pls help me to come out from this problem.
If anyone has solution for it, pls share it
Thanks in Advance
Keyur

Answer 1

Today I installed all software in following order.
1) First install oracle 10g 32bit client & 64bit client on windows 2008 R2 development server.
2) After oracle installation, I installed visual studio 2005 and tested crystal report on server in debug mode. It was working completely.
(Both type of report - report created with the help of command in crystal report & crystal report created in direct reference of database table)
Then i published my test project and setup on same server for clientside testing. but on client machine, it shows error message.
that was : The type initializer for 'CrystalDecisions.CrystalReports.Engine.ReportDocument' threw an exception.
One more thing i have observed that was report created with help of command in crystal report was working on client machine. But report in which i have added table direclty, was generating above error.
Then i installed crredist2005_x86.msi and crredist2005_x64.msi from visual studio installed folder. After installation, error message changed on clinet machine.
Error Message : Logon failed. Details: Error Code: 0x Source: ADODB.Connection Description: Provider cannot be found. It may not be properly installed. Error in File C:\Windows\TEMP\tablesource {EE65A074-2C4E-43DE-A3FC-1FE673093BF1}.rpt: Unable to connect: incorrect log on parameters
Still in debug mode on server, asp.net project is working with crystal report. I think, when i run asp.net project in debug mode on server, project may be run on 32bit mode. When i run same project from published setup on client machine, it may be run on 64bit mode.
I can't understand how to solve this problem.
Pls. help me.
Thanks in Advance
Keyur