Re: sqlcrl exception >> attn Charles Wang <<

From:

"gerry" <germ2@newsgroup.nospam>

Newsgroups:

microsoft.public.sqlserver.programming,microsoft.public.dotnet.framework

Date:

Mon, 19 Apr 2010 12:48:03 -0400

Message-ID:

<eoTfVA#3KHA.4332@TK2MSFTNGP02.phx.gbl>

Hello Charles ,

I just saw your response on microsoft.com/communities - I found it via
google as it never showed up on the newsgroup ?!?

The problem isn't the that the exception is thrown ( in fact I want the user
to see them ) , the problem is that once an exception is thrown the web
service call will fail 100% of the time after that until the sql service is
restarted.

The only time we see any exceptions being thrown is after the webservice
machine is rebooted. We can access the web service after a reboot from the
sql server machine via web browser but not from the sqlclr webservice call .

Gerry

      "Charles Wang [MSFT]" 4/2/2010 5:31 PM PST

                    Hi,
                  Once you receive a thread abort exception, even you use
catch to handle it.
                  It will still be thrown out after the catch handling
unless you call
                  ResetAbort().Does the following code help for you?
                  ==============================
                  try{
                  string response = ws.Call1( null , null , Method , Arg1 );
                  }
                  catch(ThreadAbortException ex)
                  {
                  Thread.ResetAbort();
                  ... //put your code here for additional handling
                  }
                  catch(Exception){
                  .../*Other exception handling*/
                  }
                  =================================

                  Best regards,
                  Charles Wang

"gerry" <germ2@newsgroup.nospam> wrote in message
news:udoFmm3zKHA.928@TK2MSFTNGP05.phx.gbl...

I adjusted the code example for a little more context.
I also added an additional try catch to see if that catches something.

"gerry" <germ2@newsgroup.nospam> wrote in message
news:%23OJSjR3zKHA.928@TK2MSFTNGP05.phx.gbl...

We have an sqlclr Stored procedure that invokes a web service.
SqlServer sits on on one machine and the web service on another within
the same lan.
Everything works fine until the web service machine is rebooted - at
which point all attempts to use the SP bomb with the exception below
until we restart the Sql Service.
I am probably wrong but it sounds like a connection to the webservice is
being opened once and held open for all subsequent requests. When the
webservice machine is rebooted the connection is broken causing this
exception.

MySP was created by using 'Add Web Reference'

[SqlProcedure]
public static void HPU_MySP( string Request )
{
   using ( MyWS ws = new MyWS() )
   {
       ///
       /// errors during ws call leave connection open
       /// even though object is disposed
       /// 2 solutions so far :
       ///
       /// 1:
       /// try {
       /// rtn = ws.Call();
       /// } catch(ThreadAbortException){
       /// try{ ws.Abort(); }catch(Exception){}
       /// throw;
       /// }
       ///2:
       /// change
       /// rtn = ws.Call();
       /// to
       /// rtn = ws.EndCall( ws.BeginCall( null , null ) );
       ///
       /// see
http://dbaspot.com/forums/ms-sqlserver/218732-aborting-web-service-method-invokes-after-threadabortexception.html
       ///
       // string response = ws.Call1( null , null , Method , Arg1 );
try{
       string response = ws.EndCall1( ws.BeginCall1( null , null , Method
, Arg1 , null , null ) );

}catch(Exception){
   try( ws.Abort(); } catch(Exception ) { }
   throw;
}
               ...
   }
}

Msg 6522, Level 16, State 1, Procedure MySP, Line 0
A .NET Framework error occurred during execution of user-defined routine
or aggregate "MySP":
System.TypeInitializationException: The type initializer for
'Microsoft.SqlServer.Server.SmiContextFactory' threw an exception. --->
System.Threading.ThreadAbortException: Exception of type
'System.Threading.ThreadAbortException' was thrown.
System.Threading.ThreadAbortException:

System.TypeInitializationException:
  at Microsoft.SqlServer.Server.SqlContext.get_CurrentContext()
  at Microsoft.SqlServer.Server.SqlContext.get_Pipe()
  at GmsSqlClr.StoredProcedures.MySP(String Request)

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