BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  DCOMCONNECTION          BorlandTalk.com Forum Index -> Delphi Databases (Multi-Tier) View previous topic :: View next topic   Author Message Fernando Afonso Ferreira Guest Posted: Fri Feb 03, 2006 4:24 pm    Post subject: DCOMCONNECTION We are having many problems with DCOM with a error "Missing Connection or ConnectionString". We Would like to know how to solve this problem? The erros don't have a default... they happen in different situations.... Thanks in advance.... Configuration: Delphi 2005 Enterprise Remote Data Module ADO + ClientDataSet Sql Server 2000 Back to top Joe Bain Guest Posted: Mon Feb 06, 2006 5:03 pm    Post subject: Re: DCOMCONNECTION Fernando Afonso Ferreira wrote: Quote: We are having many problems with DCOM with a error "Missing Connection or ConnectionString". We Would like to know how to solve this problem? The erros don't have a default... they happen in different situations.... Thanks in advance.... Configuration: Delphi 2005 Enterprise Remote Data Module ADO + ClientDataSet Sql Server 2000 Looks like the ADO dataset on your backend is causing that error. -- -------------- Joe Bain www.iegsoftware.com Back to top Fernando Afonso Ferreira Guest Posted: Fri Feb 17, 2006 2:03 pm    Post subject: Re: DCOMCONNECTION We create one event on server to debug Adoquery-"beforeopen" and see that the property Connection really miss the "Connection Reference" random. We use many Remote Data Modules - on Remote Main - and Other Remotes childs - all the remotes childs reference the ADOConnection that allow the Main Remote. What should we do? Thanks in advance.... "Joe Bain" <j.b.a.i.n (AT) a (DOT) d.d.o.n.s.y.s.t.e.m.s..c.o.m> escreveu na mensagem news:43e7720f$1 (AT) newsgroups (DOT) borland.com... Quote: Fernando Afonso Ferreira wrote: We are having many problems with DCOM with a error "Missing Connection or ConnectionString". We Would like to know how to solve this problem? The erros don't have a default... they happen in different situations.... Thanks in advance.... Configuration: Delphi 2005 Enterprise Remote Data Module ADO + ClientDataSet Sql Server 2000 Looks like the ADO dataset on your backend is causing that error. -- -------------- Joe Bain www.iegsoftware.com Back to top Joe Bain Guest Posted: Fri Feb 17, 2006 3:03 pm    Post subject: Re: DCOMCONNECTION Fernando Afonso Ferreira wrote: Quote: We create one event on server to debug Adoquery-"beforeopen" and see that the property Connection really miss the "Connection Reference" random. We use many Remote Data Modules - on Remote Main - and Other Remotes childs - all the remotes childs reference the ADOConnection that allow the Main Remote. What should we do? Thanks in advance.... The ADOConnection you set in teh child RDMs at design time is not any good at run time. They all referance the same connection, not the one on the parent RDM. You need to create a setter function in the child RDM and when the TSharedConnection in the client connects it calls the function on the parent RDM to get the child RDM. That is when you set the ADO connection in the child RDM. Here is some code from a live app. It uses IBX and TSocketConnection, but it should work the same way. TDataRDM is the Parent IClaimMasterRDM is the Child. function TDataRDM.Get_ClaimMasterRDM: IClaimMasterRDM; begin if(not assigned(FClaimMasterRDM)) then begin FClaimMasterRDM := FClaimMasterRDMFactory.CreateComObject(nil) as IClaimMasterRDM; FClaimMasterRDM.DataRDM := Self; FClaimMasterRDM.RiskDB_IB := integer(ibRiskDB);//here I set the database end; Result := FClaimMasterRDM; end; -------------- Joe Bain www.iegsoftware.com Back to top Fernando Afonso Ferreira Guest Posted: Fri Feb 24, 2006 2:03 pm    Post subject: Re: DCOMCONNECTION Joe, We use your suggest and the missing connection error disapear. Thanks very much.... 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