C# &引用;由于对象的当前状态,操作无效;论甲骨文阅读器
关键是: 我有一个脚本,在我运行它通过性能测试之前,它绝对不会给我带来任何问题,现在每当我尝试运行它时,它总是在调试期间向我显示相同的错误:C# &引用;由于对象的当前状态,操作无效;论甲骨文阅读器,c#,oracle11g,performance-testing,datareader,C#,Oracle11g,Performance Testing,Datareader,关键是: 我有一个脚本,在我运行它通过性能测试之前,它绝对不会给我带来任何问题,现在每当我尝试运行它时,它总是在调试期间向我显示相同的错误: using (OracleConnection con = new OracleConnection()) { //Connect to OracleDB and retreive the first valid, unused SRVID// con.ConnectionString = @"Data S
using (OracleConnection con = new OracleConnection())
{
//Connect to OracleDB and retreive the first valid, unused SRVID//
con.ConnectionString = @"Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=myhostip)(PORT=1521)))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=MyServerNAme)));User Id=MyUSer;Password=MyPAssword";
OracleCommand command = new OracleCommand("SELECT MASK_GUID(SWAP_GUID(SRVID)) FROM MYTable WHERE USED=0 AND ROWNUM = 1", con);
con.Open();
OracleDataReader reader = command.ExecuteReader();
reader.Read();
ServerID = reader.GetString(0);
reader.Close();
//update SRVID in DB as used so further users will not select it
command.CommandText = "UPDATE MyTable SET USED=1 WHERE SRVID = FIX_GUID('"+ ServerID+"')";
command.Connection = con;
command.ExecuteNonQuery();
reader.Close();
reader.Dispose();
con.Close();
con.Dispose();
}
这就是代码,这里是出错的地方:
ServerID=reader.GetString(0)
上,由于对象错误的当前状态,我收到的操作无效。当在调试中对读取器进行修饰时,我发现它没有数据行,这可能解释了错误(但这会导致…)想法?您需要将MaxHttpCollection属性设置为更高的值