[Mono-bugs] [Bug 60172][Nor] New - OdbcConnection.Open: Exception thrown after a few calls.

bugzilla-daemon@bugzilla.ximian.com bugzilla-daemon@bugzilla.ximian.com
Mon, 14 Jun 2004 18:23:09 -0400 (EDT)


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Changed by sebastien.robitaille@croesus.com.

http://bugzilla.ximian.com/show_bug.cgi?id=60172

--- shadow/60172	2004-06-14 18:23:09.000000000 -0400
+++ shadow/60172.tmp.4157	2004-06-14 18:23:09.000000000 -0400
@@ -0,0 +1,84 @@
+Bug#: 60172
+Product: Mono: Class Libraries
+Version: unspecified
+OS: Red Hat 9.0
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Normal
+Component: Sys.Data
+AssignedTo: mono-bugs@ximian.com                            
+ReportedBy: sebastien.robitaille@croesus.com               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: OdbcConnection.Open: Exception thrown after a few calls.
+
+Description of Problem:
+
+An exception is thrown when OdbcConnection.Open is called more than 188 
+times.
+
+Hint: OdbcConnection is leaking ODBC resource handles.
+
+The following members in OdbcConnection.cs are allocated with 
+SQLAllocHandle but are never freed with SQLFreeHandle:
+
+henv, hdbc
+
+Steps to reproduce the problem:
+1. Call OdbcConnection.Open() many times and see that after 188 calls, an 
+exception is thrown:
+
+System.Data.Odbc.OdbcException: [unixODBC][FreeTDS][SQL Server]Login 
+incorrect.
+in <0x003c8> System.Data.Odbc.OdbcConnection:Open ()
+in <0x0004f> (wrapper remoting-invoke-with-check) 
+System.Data.Odbc.OdbcConnection:Open ()
+in <0x0006b> MonoOdbcDataSetTest.Class1:TestConnections ()
+
+
+2. Execute the following code:
+
+OdbcConnection connection = new OdbcConnection(connectionString);
+for(int nIndex = 0; nIndex < 1000; nIndex++)
+{
+	connection.Open();
+	System.Console.WriteLine(nIndex);
+	connection.Close();
+}
+
+
+Actual Results:
+0
+1
+...
+186
+187
+188
+System.Data.Odbc.OdbcException: [unixODBC][FreeTDS][SQL Server]Login 
+incorrect.
+in <0x003c8> System.Data.Odbc.OdbcConnection:Open ()
+in <0x0004f> (wrapper remoting-invoke-with-check) 
+System.Data.Odbc.OdbcConnection:Open ()
+in <0x0006b> MonoOdbcDataSetTest.Class1:TestConnections ()
+
+
+Expected Results:
+0
+1
+...
+998
+999
+
+How often does this happen? 
+Always
+
+Additional Information:
+
+Sybase Database
+mono-0.95
+freetds-0.62.3
+unixODBC-2.2.8