使用testng多线程来测试成交编号重复的问题

1.首先编写一个测试用的 function

 CREATE OR REPLACE FUNCTION getDealmainNo_test(dealdate        IN varchar2,
                                          productcodename in varchar2)
 /***********************************************************
   * linc 2018-01-09
   * 方法：获取序列编号
   * 入参：成交日期，产品代码
   * 返回：序列编号
   ***********************************************************/
  RETURN varchar2 AS
   today     varchar2(10);
   seqno     integer;
   begindate varchar2(20) := dealdate || ' 00:00:00';
   enddate   varchar2(20) := dealdate || ' 23:59:59';
   seqnoname varchar2(30);
   pragma autonomous_transaction;
 BEGIN
   seqno := 0;
   select to_char(sysdate, 'yyyy-mm-dd') into today from dual;
   if today = dealdate then
     execute immediate 'select seq_' || productcodename ||
                       '_no.nextval from dual'
       into seqno;
   else
     begin
       select nvl(max(to_number(substr(s.tno, -6))), 0) + 1
         into seqno
         from (select s.tno
                 from table_A s
                where s.dealdate between
                      to_date(begindate, 'yyyy-mm-dd hh24:mi:ss') and
                      to_date(enddate, 'yyyy-mm-dd hh24:mi:ss')
                  and s.tcode = productcodename) s  ;

     exception
       when others then
         return '';
     end;
   end if;
   seqnoname := productcodename || replace(dealdate, '-', '') ||
                lpad(seqno, 6, '0');
   RETURN seqnoname;
 END getDealmainNo_test;

2.使用java对func进行调用 每次获得一个最大的成交编号 ；

 package main.java.javaprictice;

 import main.java.C3P0XmlSimplify;
 import org.testng.annotations.Test;

 import java.sql.*;
 import java.text.SimpleDateFormat;
 import java.util.Date;

 /**
  * Created by linbo.yang on 2018/1/9.
  */
 public class CallOracleFunc {
     Connection conn = null;
     CallableStatement callableStatement = null;
     PreparedStatement ps = null;
     ResultSet rs;

     public Integer save(String no) {

         Integer rowCount=null ;
         String sql="insert into table_A(dealdate,tno,tdate,tcode) values(?,?,?,?)  ";
         conn = C3P0XmlSimplify.getInstance().getConnection();
         //ddate
         SimpleDateFormat df =new SimpleDateFormat("yyyy-MM-dd HH24:mm:ss");
         String date = df.format(new Date());
         Timestamp timestamp = Timestamp.valueOf(date);
 //dealdate
         SimpleDateFormat df1 =new SimpleDateFormat("yyyy-MM-dd");
         String dealdate = df1.format(new Date());

         try {
             ps = conn.prepareStatement(sql);
             ps.setDate(1,java.sql.Date.valueOf("2018-01-08"));
             ps.setString(2,no);
             ps.setTimestamp(3,timestamp);
             ps.setString(4,"IBO");
             rowCount=  ps.executeUpdate();
             System.out.println("rowCount"+rowCount);
         } catch (SQLException e) {
             e.printStackTrace();
         }finally {
             C3P0XmlSimplify.releaseSources(conn);
             return rowCount ;
         }

     }

     public String getDealmainNo() {
         String string = null;
         try {

             conn = C3P0XmlSimplify.getInstance().getConnection();
            /*  ?=call getDealmainNo(?,?);
            *  第一个问号（？） 代表输入值，但要制定输入类型:callableStatement.registerOutParameter(1, Types.VARCHAR);
            *  第二个问号（？） 代表输入值，通过callableStatement.setString（）方法类制定入参的类型 ；
            *  。。。。。。。
            * */
             callableStatement = conn.prepareCall("{?=call getDealmainNo_test(?,?)}");
             callableStatement.registerOutParameter(1, Types.VARCHAR);
             callableStatement.setString(2, "2018-01-08");
             callableStatement.setString(3, "IBO");
             callableStatement.execute();
             string = callableStatement.getString(1);
             System.out.println(string);

         } catch (Exception e) {
             e.printStackTrace();
         } finally {
             C3P0XmlSimplify.releaseSources(conn);
             return string;
         }
     }
 @Test(threadPoolSize = 3,invocationCount = 10,timeOut = 100000)
     public  void getDealmainNo_() {
     CallOracleFunc c=new CallOracleFunc();
     String dealmainNo = c.getDealmainNo();
     Integer row = c.save(dealmainNo);
     System.out.println("dealmainNo="+dealmainNo+"  ;row="+row);

     }

     public static void main(String[] args) {
         CallOracleFunc c=new CallOracleFunc();
         String dealmainNo = c.getDealmainNo();
         Integer row = c.save(dealmainNo);
         System.out.println("dealmainNo="+dealmainNo+"  ;row="+row);

     }

 }

--数据的相关脚本

    create table table_A(
    tid number ,
    dealdate date ,
    tcode varchar2(100),
    tno varchar2(100),
    tdate timestamp
    ) ;
     drop table table_A ;
    select * from table_A  t where t.tid is null ;
    delete table_A  t where t.tid is null ;
  insert into table_A
    select v.ID,
    v.DEALDATE,
    v.PRODUCTCODE,
    v.NO,
    v.CREATETIME
     from v_product_deal_main v ;
     insert into table_A(tno,tdate) values(?,?) ;

       select nvl(max(to_number(substr(s.tno, -6))), 0) + 1
         from (select s.tno
                 from table_A s
                where s.dealdate between
                      to_date('2018-01-08 00:00:00', 'yyyy-mm-dd hh24:mi:ss') and
                      to_date('2018-01-08 23:00:00', 'yyyy-mm-dd hh24:mi:ss')
                  and s.tcode = 'IBO') s