I am developing a C# windows application which will act as an frontend
for a SQL 2000 database.
I am using a laptop with SQl 2000 workgroup edition (sp4). SQL is setup
to use windows authentication.
When I use my application on my laptop everything works.
When I use my application on a SQL server (SQL 2000 enterprise sp4) in
my organisation I get the error : "invalid object <tablename>"
The database is a database generated by logman.exe and filled with
performance/capacity figures. The database structure is always the
same.
I am using the following code for the connection:
=============== =============== =============== =============== ==========
public static SqlConnection GetConnection(s tring a, string b,string
c)
{
string strConn;
if(c.Length !=0)
{
strConn = c;
}
else
{
strConn = "Data Source=" + a +";Initial Catalog=" + b +
";Integrate d Security=SSPI;" ;
/* string strConn = "Integrated Security=SSPI;I nitial Catalog = " +
c +
";Data Source=" + a + ";";*/
}
System.Windows. Forms.MessageBo x.Show(strConn) ;
SqlConnection objConnection = null;
try
{
objConnection = new SqlConnection(s trConn);
objConnection.O pen();
}
catch(Exception ex)
{
objConnection = null;
System.Windows. Forms.MessageBo x.Show("Fout bij verbinden : " +
ex.Message,"Con nection fout");
}
finally
{
if (objConnection != null)
{
objConnection.C lose();
}
}
return objConnection;
}
=============== =============== =============== =============== ===========
The select statement I use is = SELECT MachineName FROM CounterDetails
GROUP BY MachineName
My ConnectionStrin g is = "Data Source=" + a +";Initial Catalog=" + b +
";Integrate d Security=SSPI;" (a = servername) (b = databasename);
My domainaccount has the dbowner role on the database. And
serverconnectio n goes ok!
The only strange thing I see in the eventlog is that my authentication
to the corporate SQL server is performed by NTLM. Why not by kerberos??
When I use a access frontend I always see Kerberos events in the
eventlog. Could this be a security issue? Or am I using the wrong
query?
code for query:
=============== =============== =============== =============== ===========
public static DataSet ExecuteQuery(Sq lConnection objConnection,
SqlDataAdapter objAdapter, string strQuery)
{
objConnection.O pen();
System.Windows. Forms.MessageBo x.Show(strQuery );
objAdapter.Sele ctCommand = new SqlCommand(strQ uery,objConnect ion);
DataSet objDataSet = new DataSet();
try
{
objAdapter.Fill (objDataSet,"x" );
objConnection.C lose();
}
catch(Exception ex)
{
System.Windows. Forms.MessageBo x.Show("SQL: " + ex.Message,"SQL
fout");
}
finally
{
if (objConnection != null)
{
objConnection.C lose();
}
}
return objDataSet;
objDataSet.Disp ose();
}
}
=============== =============== =============== =============== =========== 2 1794
Hi,
That's probably cause the user that created the object is different from the
one trying to use it now:
1- Go to enterprise manager , your DB, tables and see who is the owner of
the table
2- access the table using [db_user].tablename
Cheers,
--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation
"mpriem" <sp**@mpriem.co m> wrote in message
news:11******** **************@ g47g2000cwa.goo glegroups.com.. . I am developing a C# windows application which will act as an frontend for a SQL 2000 database. I am using a laptop with SQl 2000 workgroup edition (sp4). SQL is setup to use windows authentication. When I use my application on my laptop everything works. When I use my application on a SQL server (SQL 2000 enterprise sp4) in my organisation I get the error : "invalid object <tablename>"
The database is a database generated by logman.exe and filled with performance/capacity figures. The database structure is always the same. I am using the following code for the connection: =============== =============== =============== =============== ========== public static SqlConnection GetConnection(s tring a, string b,string c) { string strConn; if(c.Length !=0) { strConn = c; } else { strConn = "Data Source=" + a +";Initial Catalog=" + b + ";Integrate d Security=SSPI;" ; /* string strConn = "Integrated Security=SSPI;I nitial Catalog = " + c + ";Data Source=" + a + ";";*/ } System.Windows. Forms.MessageBo x.Show(strConn) ; SqlConnection objConnection = null; try { objConnection = new SqlConnection(s trConn); objConnection.O pen(); } catch(Exception ex) { objConnection = null; System.Windows. Forms.MessageBo x.Show("Fout bij verbinden : " + ex.Message,"Con nection fout"); } finally { if (objConnection != null) { objConnection.C lose(); } } return objConnection; } =============== =============== =============== =============== ===========
The select statement I use is = SELECT MachineName FROM CounterDetails GROUP BY MachineName
My ConnectionStrin g is = "Data Source=" + a +";Initial Catalog=" + b + ";Integrate d Security=SSPI;" (a = servername) (b = databasename);
My domainaccount has the dbowner role on the database. And serverconnectio n goes ok! The only strange thing I see in the eventlog is that my authentication to the corporate SQL server is performed by NTLM. Why not by kerberos?? When I use a access frontend I always see Kerberos events in the eventlog. Could this be a security issue? Or am I using the wrong query?
code for query: =============== =============== =============== =============== =========== public static DataSet ExecuteQuery(Sq lConnection objConnection, SqlDataAdapter objAdapter, string strQuery) { objConnection.O pen(); System.Windows. Forms.MessageBo x.Show(strQuery ); objAdapter.Sele ctCommand = new SqlCommand(strQ uery,objConnect ion); DataSet objDataSet = new DataSet(); try { objAdapter.Fill (objDataSet,"x" ); objConnection.C lose(); } catch(Exception ex) { System.Windows. Forms.MessageBo x.Show("SQL: " + ex.Message,"SQL fout"); } finally { if (objConnection != null) { objConnection.C lose(); } } return objDataSet; objDataSet.Disp ose(); } } =============== =============== =============== =============== ===========
thanks, I will try that.
Another question:
When I use my access frontend I can see Kerberos events in the SQL
server eventlog.
When I use my c# frontend it is NTLM..
I cannot see the code behind the Access frontend because its a mde.
On my production workstation I am part of a w2k3 domain as is my sql
server. Why doesn't SSPI use the Kerberos provider??
--
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