COM+ and Remoting

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  • 1. When can MSDTC and or COM+ services be disabled
    Hi there, Out of the box installation of Windows 2000 server \W2003 Server, installs and enables the following services: Distributed Transaction Coordinator Distributed Link Tracking Server Distributed Link Tracking Client COM+ Event System I am aware that these services are used for many web services and with SQL server. I also suspect these services are used for a multiple of "built in" services especially when managing remote servers. However I am unable to find a document which states either: A. In what cases are these services necessary and in what cases these services may be disabled. B. Which services depend on MSDTC and COM+ We are contemplating disabling these services on some servers: Citrix servers\ Domain Controllers and similar systems. Has anyone found some information over these services or has experimented in disabling these services in a production environment? P.S. any tips with helping securing disabling these services are welcome, especially any information regarding the lost functionality are welcome. Regards, Daniel
  • 2. Not declaring the AutoComplete attribute in
    Hi all, I'm encountering an error at work which might be the cause of my "ORA- 24761: transaction rolled back" problem and am wondering whether there are others who may have encountered this. Our C# classes use COM+ to manage transactions and we also employ the Microsoft Enterprise Templates as prescribed in VS.NET. The business facade classes are our transaction root with most of them having the Transaction.Required attribute set. However, not all methods within the business facade classes have the AutoComplete attribute. Currently we have the following flow: BF.A -> BF.B -> BF.C -> BF.D -> BR.D - DA.D -> Oracle DataAdapter BF = Business Facade Classes BR = Business Rules Classes DA = Data Access Classes - BF.B's method is the only one with the AutoComplete attribute set - BF.A's method is trying to query of some information that belongs to another module. The questions I have is: 1. Is it okay to omit the AutoComplete Attribute and not call SetComplete or SetAbort? 2. Has anybody done something similar to what I've done and encountere the above error We're using - Oracle 9i Database - Oracle .NET Data Provider 9.2.0.4.01 - Oracle Service for Micrsoft Transaction Server 9.2.0.4.0 - .NET Framework 1.1 - Windows 2000 Server This ORA-24761 error seems to be random and not repeatable as far as I can tell. Any suggestions would be very helpful at this point. Many thanx in advance :) Terence
  • 3. Help with Microsoft.ApplicationBlocks.data.dll
    Can someone e-mail me this DLL. I cannot get my .NET to compile the project code and I'm desperate to get my app to work. I just need this DLL so I can put it into my \BIN directory. TIA John

COM+ and Remoting

Postby Ashish Sheth » Sat, 24 Apr 2004 16:42:47 GMT

Hi Dot net gurus..
Can I access a COM+ component in an application running on different
machine? How can I do this?
Can I use .NET remoting for this? what are the design issues I should
consider when accessing COM+ components using .NET remoting? what other
options I have if I want my components to be accessed by applications
running on other machines?

Please help me... this is urgent..

-- 
regards,
Ashish Sheth



Re: COM+ and Remoting

Postby JosMiguel Torres » Sat, 24 Apr 2004 19:56:08 GMT

yes, you can access with proxy. I think you need SOAP, see web services....

"Ashish Sheth" < XXXX@XXXXX.COM > escribien el mensaje


>> Hi Dot net gurus..
>> Can I access a COM+ component in an application running on different
>> machine? How can I do this?
>> Can I use .NET remoting for this? what are the design issues I should
>> consider when accessing COM+ components using .NET remoting? what other
>> options I have if I want my components to be accessed by applications
>> running on other machines?
>>
>> Please help me... this is urgent..
>>
>> --
>> regards,
>> Ashish Sheth
>>
>>



Re: COM+ and Remoting

Postby Ashish Sheth » Sat, 24 Apr 2004 22:05:41 GMT

thanks Jose,
but i need some more info??
from past 4 hours i m looking for this..
can you provide more info on how i can expose COM+ server application and
COM+ library application using remoting? what are the pros and cons?
It is so urgent for me

regards
Ashish




>> yes, you can access with proxy. I think you need SOAP, see web
services....
>>





Re: COM+ and Remoting

Postby JosMiguel Torres » Sat, 24 Apr 2004 22:33:43 GMT

hi, here a few links with more info....

-  http://www.**--****.com/ ;en-us;322627
-
 http://www.**--****.com/ 
pgdeployingapplications_65gz.asp
-
 http://www.**--****.com/ 
ml/comwscheckb.asp

is not easy, but very powerfull technology....

I hope this info let you undertstand .net remoting and com+...

regards


"Ashish Sheth" < XXXX@XXXXX.COM > escribien el mensaje


>> thanks Jose,
>> but i need some more info??
>> from past 4 hours i m looking for this..
>> can you provide more info on how i can expose COM+ server application and
>> COM+ library application using remoting? what are the pros and cons?
>> It is so urgent for me
>>
>> regards
>> Ashish




>>>> > Hi Dot net gurus.>
>>>> > Can I access a COM+ component in an application running on differen>
>>>> > machine? How can I do this>
>>>> > Can I use .NET remoting for this? what are the design issues I shoul>
>>>> > consider when accessing COM+ components using .NET remoting? what
othe>
>>>> > options I have if I want my components to be accessed by application>
>>>> > running on other machines>
>>>> >
>>>> > Please help me... this is urgent.>
>>>> >
>>>> > ->
>>>> > regards>
>>>> > Ashish Shet>
>>>> >
>>>> >
>> >
>> >
>



Similar Threads:

1.dcom vs com+ vs remoting

Hello.

I am doing a research on dcom, com+ and remoting.

We are about to develop a web application consisting 3 tiers ( web server,
application server, db server )

We are going to develop front end in asp.net and ms sql in the back end.

The middle tier mostly will be grabbing data from the db and give the result
to the front end.

I'd like to know what would be the better way to do this.

Should I use only one object in the middle tier that communicate to all the
threads requested from the web server? ( i'd like to know the pres and
cons )

I heard that dcom is better than com+ in particular situation so I'd like to
know in what situation remoting would be the best fit in the middle tier and
why

Thanx in advance


2.COM and Remoting

I am having the following problem using 1.1 Framwork. Before moving to 2.0 I 
would like to know if anyone had the same kind of problem!

I have a class A which uses a COM component (third party, so it can't be 
changed). This A class comunicates with another another class, B. This is a 
bi-directional comunication (B calls a method of A which, then, calls a 
method of the COM component).
Everything works fine until I the comunication between A and B is done 
through remoting.

When B resides in an application server the comunication between A and B 
works fine but when B calls a method of the COM component the system hangs. 
I have no idea of why this happens!

Thank you!

Rogio Manente
 XXXX@XXXXX.COM  


3.COM+ to Remoting Transition

We are a corporate shop that builds apps to run behind the firewall. In the
"Visual Studio Classic" world, we had used COM+ to host mid-tier components,
the primary purpose of these components to communicate with the SQL Sever
back end and return data.

Our clients are authenticated to run the app via Integrated Windows
authentication. Their captured credentials then allow them to run components
hosted by COM+.  The COM+ application is run under a domain identity that is
used to authenticate to SQL Server (we use Integrated Security=SSPI in the
SQL Server connection strings). So, in effect, the component executes based
on the calling users credentials, but makes data calls on that users behalf
using its own identity to talk to the db.

This has worked quite well for us in that we don't need to watch out for
exceeding our SQL Server licensing, and the identity used to access
production data is in one place and secure, known only to a select few
people. Our auditors seem happy with this approach, too. (We use a similar
type identity scheme for our development and test environments).

My question: How can we build a remoting environment (SAO, Single Call,
hosted in IIS) that allows us the same transparency as to identity passed to
the db? We really don't want to have the db access credentials sitting in a
bunch of web.config files. Granted, access to these can be limited, but it
still leaves a lot of maintenance should we have to start changing
passwords.

Has anyone had to encounter these transitional issues? There's absolutely no
literature out there that deals with it.

We would be very interested in what y'all have to offer.

TIA,
Bill


4.COM+ and Remoting

I haven't dug very far into remoting yet and I'm wondering if Remoting as
the same features as COM+ (queuing, pooling, transactions) or is Remoting a
whole different distributed computing animal separate from what COM+ tries
to achieve?

Thanks,
Jason


5.State COM+ and remoting

6. COM+ and Remoting

7. COM and Remoting

8. COM+ Web Services (ie remoting com+ from IIS)



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