// 插入
//OracleCommand cmd = "insertInto into GIS_PolygonPoint(PCode,PointColl) values(‘140134‘, :var)";
// 修改
//OracleCommand cmd = new OracleCommand("update yd_line set coord=:coordstr where lineid=" + LineId.ToString(), conn);
string sql = @"insert into 表 t(字段) values(:coordstr)";
OracleConnection conn = new OracleConnection(Comm.GetOracleConnStr());
OracleCommand cmd = new OracleCommand(sql, conn);
cmd.CommandType = CommandType.Text;
OracleParameter op = new OracleParameter(var, OracleType.Clob);
op.Value = value;
cmd.Parameters.Add(op);
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();