ORA-00001：违反唯一性约束

Question

我有这个程序：

declare
  datafix_id$c varchar2(100) := 'BSS-39038';
  datafix_version$c varchar2(100) := '1.0';
  description$c varchar(100) := 'BSS-39038 [CBM] Добавить ERT_SERVICE_ID на продукты облачных сервисов';
  cnt$i integer;
begin
  select count(1)
  into cnt$i
  from ert_datafixes_log edl1
  where edl1.datafix_id = datafix_id$c
    and edl1.datafix_version = datafix_version$c
    and edl1.result = 'APPLIED'
    and not exists(select 1
                   from ert_datafixes_log edl2
                   where edl2.datafix_id = edl1.datafix_id
                     and edl2.datafix_version = edl1.datafix_version
                     and edl2.result = 'ROLLEDBACK'
                     and edl2.execution_date > edl1.execution_date
                  );
 
  if cnt$i = 0 then
    insert into ert_datafixes_log(datafix_id, datafix_version, execution_date, result)
    values(datafix_id$c, datafix_version$c, current_date, 'APPLIED');
   
    insert into TMP_BSS39038_PRODUCTATTRIBUTE1 
    select distinct *
    from PRODUCTATTRIBUTE@rbm_dblink p
    where p.PRODUCT_ID in (8608833, 8608674, 8608675, 8608676, 8608677, 8608678, 8608679, 8608680,8608681,8608682,8608818,8608819,8608820,8608821,8608822,8608823,8608824,8608825,8608826,8608827,8608828,8608829,8608830,8608831,8608832);
     
    insert into TMP_BSS39038_PRODUCTATTRIBUTE2 
    select *
    from PRODUCTATTRIBUTE@rbm_dblink p
    where p.PRODUCT_ID in (8608246, 8608248, 8608249, 8608250, 8608251, 8608252, 8608253, 8608254, 8608255, 8608256, 8608257, 8608258, 8608259, 8608260, 8608261, 8608262, 8608263, 8608264, 8608265, 8608266, 8608267, 8608268)
    and p.PRODUCT_ATTRIBUTE_SUBID = 6;
     
    for rec1 in (select product_id
                from TMP_BSS39038_PRODUCTATTRIBUTE1
               )
      loop
        insert into PRODUCTATTRIBUTE@rbm_dblink (PRODUCT_ID, PRODUCT_ATTRIBUTE_SUBID, ATTRIBUTE_UA_NAME, ATTRIBUTE_BILL_NAME, 
        ATTRIBUTE_CLASS, MANDATORY_BOO, BREAKOUT_OBJECT, BREAKOUT_GET_BUTTON_BOO, DISPLAY_POSITION, PROV_ATTR_NUM, ATTRIBUTE_UNITS)
        values (rec1.PRODUCT_ID, 6, 'ERT_SERVICE_ID', 'ERT_SERVICE_ID', 1, 'F', '', 'F', 6, '', 'TX');
       
      end loop;
      
    for rec2 in (select PRODUCT_ID, PRODUCT_ATTRIBUTE_SUBID
                from TMP_BSS39038_PRODUCTATTRIBUTE2
               )
      loop
        update PRODUCTATTRIBUTE@rbm_dblink 
        set DISPLAY_POSITION=6, ATTRIBUTE_UA_NAME='ERT_SERVICE_ID', ATTRIBUTE_BILL_NAME='ERT_SERVICE_ID'
        where PRODUCT_ID = rec2.product_id and PRODUCT_ATTRIBUTE_SUBID = rec2.PRODUCT_ATTRIBUTE_SUBID;
       
      end loop;
 
    commit;
    dbms_output.put_line('Датафикс применен успешно');
  else
    dbms_output.put_line('Датафикс уже был применен');
  end if;
end;

运行该过程会出现错误： SQL 错误 [2055] [42000]: ORA-02055: 分布式更新操作失败；需要回滚 ORA-00001: 违反唯一性约束 (GENEVA_ADMIN.PRODUCTACTRIBUTE_PK) ORA-02063: RBM_DBLINK 的前一行 ORA-06512: 第 45 行 ORA-06512: 第 45 行

我知道“插入”操作会导致错误，但我不明白为什么

如果输入操作是使用特定的id进行的，则不会出现错误。例如：

insert into PRODUCTATTRIBUTE@rbm_dblink (PRODUCT_ID, PRODUCT_ATTRIBUTE_SUBID, ATTRIBUTE_UA_NAME,
        ATTRIBUTE_BILL_NAME, ATTRIBUTE_CLASS, MANDATORY_BOO, BREAKOUT_OBJECT, BREAKOUT_GET_BUTTON_BOO, DISPLAY_POSITION, PROV_ATTR_NUM, ATTRIBUTE_UNITS)
        values (8608833, 6, 'ERT_SERVICE_ID', 'ERT_SERVICE_ID', 1, 'F', '', 'F', 6, '', 'TX')

本次操作成功完成。

PRODUCTATTRIBUTE_PK 由 PRODUCT_ID (NUMBER(9,0)) 和 PRODUCT_ATTRIBUTE_SUBID (NUMBER(9,0)) 组成

Answer 1

此部分使用 PRODUCTATTRIBUTE@rbm_dblink 中的现有记录填充临时表

   insert into TMP_BSS39038_PRODUCTATTRIBUTE1 
    select distinct *
    from PRODUCTATTRIBUTE@rbm_dblink p
    where p.PRODUCT_ID in (8608833, 8608674, 8608675, 8608676, 8608677, 8608678, 8608679, 8608680,8608681,8608682,8608818,8608819,8608820,8608821,8608822,8608823,8608824,8608825,8608826,8608827,8608828,8608829,8608830,8608831,8608832);

然后代码循环访问该临时表并尝试将记录插入到从中选择的同一个表中。

    for rec1 in (select product_id
                from TMP_BSS39038_PRODUCTATTRIBUTE1
               )
      loop
        insert into PRODUCTATTRIBUTE@rbm_dblink (PRODUCT_ID, PRODUCT_ATTRIBUTE_SUBID, ATTRIBUTE_UA_NAME, ATTRIBUTE_BILL_NAME, 
        ATTRIBUTE_CLASS, MANDATORY_BOO, BREAKOUT_OBJECT, BREAKOUT_GET_BUTTON_BOO, DISPLAY_POSITION, PROV_ATTR_NUM, ATTRIBUTE_UNITS)
        values (rec1.PRODUCT_ID, 6, 'ERT_SERVICE_ID', 'ERT_SERVICE_ID', 1, 'F', '', 'F', 6, '', 'TX');
       
      end loop;

因此...对于 INSERT 语句中的所有主键值，目标表中已经存在一行，这会引发唯一约束冲突。