天萃荷净

运维DBA反映生产数据库10.2.0.1存在BUG导致SQL无法使用，在升级到10.2.0.5后执行SQL报错ORA-00918，分析原因为BUG修复后要修改SQL语句，升级数据库到10.2.0.5遭遇ORA-00918: column ambiguously defined

一个数据库从10201升级到10205之后,出现ORA-00918错误,查询mos发现在以前版本中是bug,Oracle好像在10205中把它修复了,结果就是以前应用的sql无法正常执行.这次升级的结果就是客户晚上3点联系开发商紧急修改程序。再次提醒：再小的系统数据库升级都需要做,功能测试,SPA测试,确保升级后功能和性能都正常.

SQL> select * from v$version;

BANNER

----------------------------------------------------------------

Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bi

PL/SQL Release 10.2.0.5.0 - Production

CORE 10.2.0.5.0 Production

TNS for 64-bit Windows: Version 10.2.0.5.0 - Production

NLSRTL Version 10.2.0.5.0 - Production

1.执行报错ORA-00918

多个表JOIN连接,由于在select中的列未指定表名，而且该列在多个表中有，因此在10205中报ORA-00918错误，Oracle认为在以前的版本中是 Bug 5368296: SQL NOT GENERATING ORA-918 WHEN USING JOIN. 升级到10.2.0.5, 11.1.0.7 and 11.2.0.2版本，需要注意此类问题。修复bug没事,但是修复了之后导致系统需要修改sql才能够运行,确实让人很无语

SQL> set autot trace

SQL> set lines 100

SQL> SELECT yz_id, item_code, DECODE (yzlx, 0, '长期医嘱', '临时医嘱') yzlx,

2 item_name, gg, sl || sldw sl, zyjs, yf, a.pc, zbj, zbh,

3 TO_CHAR (dcl, 'fm9999990.009') || dcldw dcl, a.bz, lb, zyh,ch,xm,

4 bq, cfh, lrysdm, lrysxm, lrrq, hdrdm, hdrxm, hdrq, sender_code,

5 sender_name, send_date, tzysdm, tzysxm, tzrq, ksrq, zxfy,

6 lb_yp_yl, zsq_code

7 FROM op.yz a LEFT OUTER JOIN op.pc b

8 ON NVL (TRIM (UPPER (a.pc)), ' ') = NVL (TRIM (UPPER (b.pc)), ' ')

9 LEFT JOIN op.zy p ON a.zyh = p.zyh

10 WHERE p.cy='在院' AND p.new_patient='1'

11 AND upper(nvl(p.bj,1))<> 'Y'

12 AND (state = '已核对')

13 AND is_in_bill IS NULL

14 ORDER BY ksrq, yz_id ;

bq, cfh, lrysdm, lrysxm, lrrq, hdrdm, hdrxm, hdrq, sender_code,

*

ERROR at line 4:

ORA-00918: column ambiguously defined

SQL> select COLUMN_NAME,TABLE_NAME from DBA_tab_columns where column_name='BQ'

2 AND TABLE_NAME IN('YZ','ZY','PC');

COLUMN_NAME TABLE_NAME

------------------------------ ------------------------------

BQ ZY

BQ YZ

10.2.0.1中执行正常

E:\>sqlplus / as sysdba

SQL*Plus: Release 10.2.0.1.0 - Production on 星期六 1月 3 14:09:51 2015

Copyright (c) 1982, 2005, Oracle. All rights reserved.

连接到:

Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

SQL> set autot trace

SQL> set lines 100

SQL> SELECT yz_id, item_code, DECODE (yzlx, 0, '长期医嘱', '临时医嘱') yzlx,

2 item_name, gg, sl || sldw sl, zyjs, yf, a.pc, zbj, zbh,

3 TO_CHAR (dcl, 'fm9999990.009') || dcldw dcl, a.bz, lb, zyh,ch,xm

,

4 bq, cfh, lrysdm, lrysxm, lrrq, hdrdm, hdrxm, hdrq, sender_code,

5 sender_name, send_date, tzysdm, tzysxm, tzrq, ksrq, zxfy,

6 lb_yp_yl, zsq_code

7 FROM op.yz a LEFT OUTER JOIN op.pc b

8 ON NVL (TRIM (UPPER (a.pc)), ' ') = NVL (TRIM (UPPER (b.pc)), '

')

9 LEFT JOIN op.zy p ON a.zyh = p.zyh

10 WHERE p.cy='在院' AND p.new_patient='1'

11 AND upper(nvl(p.bj,1))<> 'Y'

12 AND (state = '已核对')

13 AND is_in_bill IS NULL

14 ORDER BY ksrq, yz_id ;

已选择19804行。

执行计划

----------------------------------------------------------

ERROR:

ORA-00604: 递归 SQL 级别 2 出现错误

ORA-16000: 打开数据库以进行只读访问

SP2-0612: 生成 AUTOTRACE EXPLAIN 报告时出错

统计信息

----------------------------------------------------------

1 recursive calls

0 db block gets

41945 consistent gets

0 physical reads

0 redo size

2075973 bytes sent via SQL*Net to client

14989 bytes received via SQL*Net from client

1322 SQL*Net roundtrips to/from client

1 sorts (memory)

0 sorts (disk)

19804 rows processed

10.2.0.5库中同名列增加表名前缀执行OK

1

SQL> set autot trace

SQL> set lines 100

SQL> SELECT yz_id, item_code, DECODE (yzlx, 0, '长期医嘱', '临时医嘱') yzlx,

2 item_name, gg, sl || sldw sl, zyjs, yf, a.pc, zbj, zbh,

3 TO_CHAR (dcl, 'fm9999990.009') || dcldw dcl, a.bz, lb,zyh,ch,xm,

4 a.bq, cfh, lrysdm, lrysxm, lrrq, hdrdm, hdrxm, hdrq, sender_code,

5 sender_name, send_date, tzysdm, tzysxm, tzrq, ksrq, zxfy,

6 lb_yp_yl, zsq_code

7 FROM op.yz a LEFT OUTER JOIN op.pc b

8 ON NVL (TRIM (UPPER (a.pc)), ' ') = NVL (TRIM (UPPER (b.pc)), ' ')

9 LEFT JOIN op.zy p ON a.zyh = p.zyh

10 WHERE p.cy='在院' AND p.new_patient='1'

11 AND upper(nvl(p.bj,1))<> 'Y'

12 AND (state = '已核对')

13 AND is_in_bill IS NULL

14 ORDER BY ksrq, yz_id ;

20629 rows selected.

Execution Plan

----------------------------------------------------------

Plan hash value: 3468887510

--------------------------------------------------------------------------------------------

| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |

--------------------------------------------------------------------------------------------

| 0 | SELECT STATEMENT | | 10 | 2580 | 2968 (2)| 00:00:36 |

| 1 | SORT ORDER BY | | 10 | 2580 | 2968 (2)| 00:00:36 |

|* 2 | HASH JOIN OUTER | | 10 | 2580 | 2967 (2)| 00:00:36 |

|* 3 | TABLE ACCESS BY INDEX ROWID| YZ | 3 | 672 | 42 (0)| 00:00:01 |

| 4 | NESTED LOOPS | | 10 | 2390 | 2963 (2)| 00:00:36 |

|* 5 | TABLE ACCESS FULL | ZY | 3 | 45 | 2917 (2)| 00:00:36 |

|* 6 | INDEX RANGE SCAN | DZBLYZ_ZYH | 118 | | 2 (0)| 00:00:01 |

| 7 | TABLE ACCESS FULL | PC | 33 | 627 | 3 (0)| 00:00:01 |

--------------------------------------------------------------------------------------------

Predicate Information (identified by operation id):

---------------------------------------------------

2 - access(NVL(TRIM(UPPER("A"."PC")),' ')=NVL(TRIM(UPPER("B"."PC"(+))),' '))

3 - filter("A"."STATE"='已核对' AND "A"."IS_IN_BILL" IS NULL)

5 - filter("P"."CY"='在院' AND UPPER(NVL("P"."BJ",'1'))<>'Y' AND

"P"."NEW_PATIENT"='1')

6 - access("A"."ZYH"="P"."ZYH")

Statistics

----------------------------------------------------------

0 recursive calls

0 db block gets

42121 consistent gets

0 physical reads

0 redo size

2181383 bytes sent via SQL*Net to client

15617 bytes received via SQL*Net from client

1377 SQL*Net roundtrips to/from client

1 sorts (memory)

0 sorts (disk)

20629 rows processed

Bug 5368296: SQL NOT GENERATING ORA-918 WHEN USING JOIN

Bug 12388159 : SQL REPORTING ORA00918 AFTER UPGRADE TO 10.2.0.5.0

再次提醒：再小的系统数据库升级都需要做,功能测试,SPA测试,确保升级后功能和性能都正常.

--------------------------------------ORACLE-DBA----------------------------------------

最权威、专业的Oracle案例资源汇总之【案例】Oracle报错ORA-00918 数据库升级后遇到SQL BUG 5368296