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dotnet ado.net : SqlConnection error handling
Using VS 2005, I created data adapters using the IDE. I store a
connection object in My.Settings (cool feature) collection. What I'd like to do is seemlessly changed my connection on the fly. Say for instance the production server is down due to network or server hang, the applicaiton should start writing to its own instance of SQL server. I wanted to use the StatusChanged event but its not firing on the Fill method. Each time I instantiate my adapter in a routine, I set the connection to the one in My.Settings because the connection might be different (local, production, development). It was firing at one time but hasn't done it since. Don't know what I did to deserve that. Any help would be greatly appreciated Thanks in advance, Ryan
Investigate SQL Server 2005 Failover Partner.
http://www.microsoft.com/technet/prodtechnol/sql/bestpractice/implappfailover.mspx -- ____________________________________ William (Bill) Vaughn Author, Mentor, Consultant Microsoft MVP INETA Speaker www.betav.com/blog/billva www.betav.com Please reply only to the newsgroup so that others can benefit. This posting is provided "AS IS" with no warranties, and confers no rights. __________________________________ Visit www.hitchhikerguides.net to get more information on my latest book: Hitchhiker's Guide to Visual Studio and SQL Server (7th Edition) and Hitchhiker's Guide to SQL Server 2005 Compact Edition (EBook) ----------------------------------------------------------------------------------------------------------------------- [quoted text, click to view] "Brooke" <tbrooked@hotmail.com> wrote in message news:%23t2HwzHnHHA.2076@TK2MSFTNGP06.phx.gbl... >I would catch the exception thrown from the first server timing out, and >then change the connection to the local and try to connect again. Watch >for an exception and show message to user if the second fails. > > > "Ryan" <rchill81@gmail.com> wrote in message > news:1179772371.960943.43260@x35g2000prf.googlegroups.com... >> Using VS 2005, I created data adapters using the IDE. I store a >> connection object in My.Settings (cool feature) collection. What I'd >> like to do is seemlessly changed my connection on the fly. Say for >> instance the production server is down due to network or server hang, >> the applicaiton should start writing to its own instance of SQL >> server. I wanted to use the StatusChanged event but its not firing on >> the Fill method. Each time I instantiate my adapter in a routine, I >> set the connection to the one in My.Settings because the connection >> might be different (local, production, development). It was firing at >> one time but hasn't done it since. Don't know what I did to deserve >> that. Any help would be greatly appreciated >> >> Thanks in advance, >> >> Ryan >> >> > >
I would catch the exception thrown from the first server timing out, and
then change the connection to the local and try to connect again. Watch for an exception and show message to user if the second fails. [quoted text, click to view] "Ryan" <rchill81@gmail.com> wrote in message news:1179772371.960943.43260@x35g2000prf.googlegroups.com... > Using VS 2005, I created data adapters using the IDE. I store a > connection object in My.Settings (cool feature) collection. What I'd > like to do is seemlessly changed my connection on the fly. Say for > instance the production server is down due to network or server hang, > the applicaiton should start writing to its own instance of SQL > server. I wanted to use the StatusChanged event but its not firing on > the Fill method. Each time I instantiate my adapter in a routine, I > set the connection to the one in My.Settings because the connection > might be different (local, production, development). It was firing at > one time but hasn't done it since. Don't know what I did to deserve > that. Any help would be greatly appreciated > > Thanks in advance, > > Ryan > >
On May 22, 10:44 am, "William \(Bill\) Vaughn"
[quoted text, click to view] <billvaRemoveT...@betav.com> wrote: > Investigate SQL Server 2005 Failover Partner.http://www.microsoft.com/tec= hnet/prodtechnol/sql/bestpractice/implapp... > > -- > ____________________________________ > William (Bill) Vaughn > Author, Mentor, Consultant > Microsoft MVP > INETA Speakerwww.betav.com/blog/billvawww.betav.com > Please reply only to the newsgroup so that others can benefit. > This posting is provided "AS IS" with no warranties, and confers no right= s=2E > __________________________________ > Visitwww.hitchhikerguides.netto get more information on my latest book: > Hitchhiker's Guide to Visual Studio and SQL Server (7th Edition) > and Hitchhiker's Guide to SQL Server 2005 Compact Edition (EBook) > -------------------------------------------------------------------------= --=AD-------------------------------------------- > > "Brooke" <tbroo...@hotmail.com> wrote in message > > news:%23t2HwzHnHHA.2076@TK2MSFTNGP06.phx.gbl... > > > > >I would catch the exception thrown from the first server timing out, and > >then change the connection to the local and try to connect again. Watch > >for an exception and show message to user if the second fails. > > > "Ryan" <rchil...@gmail.com> wrote in message > >news:1179772371.960943.43260@x35g2000prf.googlegroups.com... > >> Using VS 2005, I created data adapters using the IDE. I store a > >> connection object in My.Settings (cool feature) collection. What I'd > >> like to do is seemlessly changed my connection on the fly. Say for > >> instance the production server is down due to network or server hang, > >> the applicaiton should start writing to its own instance of SQL > >> server. I wanted to use the StatusChanged event but its not firing on > >> the Fill method. Each time I instantiate my adapter in a routine, I > >> set the connection to the one in My.Settings because the connection > >> might be different (local, production, development). It was firing at > >> one time but hasn't done it since. Don't know what I did to deserve > >> that. Any help would be greatly appreciated > > >> Thanks in advance, > > >> Ryan- Hide quoted text - > > - Show quoted text - Bill, Is the database mirror failover only isolated to SQL 2005 instances or is it part of the 2.0 framework? I see its provider based but would this work with SQL 2000 instances?
This is tightly coupled and implemented by SQL Server 2005 (SP1). Nope, it
does not work with 2000. -- ____________________________________ William (Bill) Vaughn Author, Mentor, Consultant Microsoft MVP INETA Speaker www.betav.com/blog/billva www.betav.com Please reply only to the newsgroup so that others can benefit. This posting is provided "AS IS" with no warranties, and confers no rights. __________________________________ Visit www.hitchhikerguides.net to get more information on my latest book: Hitchhiker's Guide to Visual Studio and SQL Server (7th Edition) and Hitchhiker's Guide to SQL Server 2005 Compact Edition (EBook) ----------------------------------------------------------------------------------------------------------------------- [quoted text, click to view] "Ryan" <rchill81@gmail.com> wrote in message news:1179926533.586992.68560@p77g2000hsh.googlegroups.com... On May 22, 10:44 am, "William \(Bill\) Vaughn" <billvaRemoveT...@betav.com> wrote: > Investigate SQL Server 2005 Failover > Partner.http://www.microsoft.com/technet/prodtechnol/sql/bestpractice/implapp... > > -- > ____________________________________ > William (Bill) Vaughn > Author, Mentor, Consultant > Microsoft MVP > INETA Speakerwww.betav.com/blog/billvawww.betav.com > Please reply only to the newsgroup so that others can benefit. > This posting is provided "AS IS" with no warranties, and confers no > rights. > __________________________________ > Visitwww.hitchhikerguides.netto get more information on my latest book: > Hitchhiker's Guide to Visual Studio and SQL Server (7th Edition) > and Hitchhiker's Guide to SQL Server 2005 Compact Edition (EBook) > ----------------------------------------------------------------------------------------------------------------------- > > "Brooke" <tbroo...@hotmail.com> wrote in message > > news:%23t2HwzHnHHA.2076@TK2MSFTNGP06.phx.gbl... > > > > >I would catch the exception thrown from the first server timing out, and > >then change the connection to the local and try to connect again. Watch > >for an exception and show message to user if the second fails. > > > "Ryan" <rchil...@gmail.com> wrote in message > >news:1179772371.960943.43260@x35g2000prf.googlegroups.com... > >> Using VS 2005, I created data adapters using the IDE. I store a > >> connection object in My.Settings (cool feature) collection. What I'd > >> like to do is seemlessly changed my connection on the fly. Say for > >> instance the production server is down due to network or server hang, > >> the applicaiton should start writing to its own instance of SQL > >> server. I wanted to use the StatusChanged event but its not firing on > >> the Fill method. Each time I instantiate my adapter in a routine, I > >> set the connection to the one in My.Settings because the connection > >> might be different (local, production, development). It was firing at > >> one time but hasn't done it since. Don't know what I did to deserve > >> that. Any help would be greatly appreciated > > >> Thanks in advance, > > >> Ryan- Hide quoted text - > > - Show quoted text - Bill, Is the database mirror failover only isolated to SQL 2005 instances or is it part of the 2.0 framework? I see its provider based but would this work with SQL 2000 instances?
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