初步猜测和连接池有关的问题

Question

源码:  
 
string  strConn="server=localhost;user  id=***;password=***;database=test;Min  Pool  Size=10;Max  Pool  Size=5000";  
                                   SqlConnection  mConnection1=new  SqlConnection(strConn);  
 
                                   mConnection1.Open();  
                                   try  
                                   {  
 
                                               SqlDataAdapter  MyAdapter1  =  new  SqlDataAdapter();  
 
 
                                               MyAdapter1.InsertCommand  =  new  SqlCommand("Insert_Report2",  mConnection1);  
                                               MyAdapter1.InsertCommand.CommandType  =  CommandType.StoredProcedure;  
                                               MyAdapter1.InsertCommand.Parameters.Clear();  
                                               MyAdapter1.InsertCommand.Parameters.Add("@spPrice1",  SqlDbType.NVarChar  ,  10,  "SPrice1");  
                                               MyAdapter1.InsertCommand.Parameters.Add("@spPrice2",  SqlDbType.NVarChar  ,  10,  "SPrice2");  
                                                                         
                                                 
                                               MyAdapter1.Update  (ds_type,ds_type.Tables[0].TableName);    
                                   }  
                                   catch(SqlException  err)  
                                   {  
                                               string  test2=err.Message  .ToString  ();  
                                                 
                                                             
                                   }  
                                   mConnection1.Close  ();  
                                   mConnection1.Dispose  ();  
 
 
要不就是抛出"从池中获取连接  超时"，要不就是运行到一定时间就僵在那里不动了，该关闭的也关闭了，maxpool也设置了，到底是怎么回事呢