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数据库链接执行含ROLLUP的SQL的Bug
作者:武汉SEO闵涛  文章来源:敏韬网  点击数2252  更新时间:2007/11/14 13:08:08  文章录入:mintao  责任编辑:mintao

通过微软的报表服务器访问Oracle,做好一张报表,为了偷懒,直接在数据库建立了一个视图,然后显示就行了。结果测试时报ORA-600 [qks3tinit]。登陆到本机一运行,没问题啊。怀疑是微软报表服务器连接Oracle的接口有问题。但是其他几个类似视图又都没问题。于是检测SQL:

   SELECT  (CASE
                WHEN fjname IS NULL
                   THEN ''''全局''''
                ELSE fjname
             END) fjname,
            (CASE
                WHEN stat_type IS NULL
                   THEN ''''总计''''
                ELSE stat_type
             END) stat_type,
            (CASE
                WHEN cust_type_old IS NULL
                   THEN ''''总计''''
                ELSE cust_type_old
             END
            ) cust_type_old,
            cnt, curr_user
       FROM (SELECT fjname, stat_type, cust_type_old, COUNT (*) cnt, SUM(CASE state WHEN ''''正常'''' THEN 1 ELSE 0 END) curr_user
                 FROM tmp_tj0507001
                WHERE fjname IS NOT NULL
             GROUP BY grouping sets(rollup(fjname, stat_type, cust_type_old), rollup(stat_type, cust_type_old)))
   ORDER BY fjname, stat_type, cust_type_old;

执行计划:

SELECT STATEMENT, GOAL = HINT: ALL_ROWS   Cost=10 Cardinality=15 Bytes=780
 SORT ORDER BY   Cost=10 Cardinality=15 Bytes=780
  VIEW Object owner=YAOYP  Cost=8 Cardinality=15 Bytes=780 
   TEMP TABLE TRANSFORMATION     
    VIEW Object owner=YAOYP  Cost=8 Cardinality=4 Bytes=208
     VIEW Object owner=YAOYP  Cost=8 Cardinality=4 Bytes=208
      UNION-ALL     
       TABLE ACCESS FULL Object owner=SYS Object name=SYS_TEMP_0FD9D668F_9A864B59 Cost=2 Cardinality=1 Bytes=52
       TABLE ACCESS FULL Object owner=SYS Object name=SYS_TEMP_0FD9D6690_9A864B59 Cost=2 Cardinality=1 Bytes=52
       TABLE ACCESS FULL Object owner=SYS Object name=SYS_TEMP_0FD9D6691_9A864B59 Cost=2 Cardinality=1 Bytes=52
       TABLE ACCESS FULL Object owner=SYS Object name=SYS_TEMP_0FD9D6691_9A864B59 Cost=2 Cardinality=1 Bytes=52
RECURSIVE EXECUTION  Object name=SYS_LE_7_0   
RECURSIVE EXECUTION  Object name=SYS_LE_7_1   
RECURSIVE EXECUTION  Object name=SYS_LE_7_2   
RECURSIVE EXECUTION  Object name=SYS_LE_7_3 

就看到一个TEMP TABLE TRANSFORMATION,这个比较少见哦。另外一个类似SQL:

   SELECT   (CASE
                WHEN fjname IS NULL
                   THEN ''''全局''''
                ELSE fjname
             END) fjname,
            (CASE
                WHEN cust_type IS NULL
                   THEN ''''总计''''
                ELSE cust_type
             END
            ) cust_type,
            curr_user
       FROM (SELECT fjname, (CASE WHEN cust_type IS NULL THEN ''''公免等'''' ELSE cust_type END) cust_type,
                    SUM(CASE state WHEN ''''正常'''' THEN 1 ELSE 0 END) curr_user
               FROM tmp_tj0507001
              WHERE fjname IS NOT NULL AND state = ''''正常''''
              GROUP BY ROLLUP (fjname, (CASE WHEN cust_type IS NULL THEN ''''公免等'''' ELSE cust_type END)))
   ORDER BY fjname, cust_type;

执行计划:

SELECT STATEMENT, GOAL = CHOOSE   Cost=3021 Cardinality=43 Bytes=1376
 SORT ORDER BY   Cost=3021 Cardinality=43 Bytes=1376
  VIEW Object owner=YAOYP  Cost=3020 Cardinality=43 Bytes=1376
   SORT GROUP BY ROLLUP   Cost=3020 Cardinality=43 Bytes=989
    INDEX FAST FULL SCAN Object owner=YAOYP Object name=SYS_IOT_TOP_62350 Cost=367 Cardinality=1132418 Bytes=26045614

没有TEMP TABLE TRANSFORMATION了。看来要避免这个执行路径,想了半天也没办法,开始还怀疑是参数STAR_TRANSFORMATION_ENABLED问题,后来一看是FALSE的。只能到Metalink上找了,结果又是一个Bug,最近简直是一出问题就是Bug,以前怎么就不觉得呢?

文档 ID:  注释:2836690.8
主题:  Support Description of Bug 2836690
类型:  PATCH
状态:  PUBLISHED
 
内容类型:  TEXT/X-HTML
创建日期:  08-AUG-2003
上次修订日期:  14-AUG-2003
 Click here for details of sections in this note.
Bug 2836690  ROLLUP over DBLINK may fail with OERI:qks3tinit
 This note gives a brief overview of bug 2836690.
Affects:

    Product (Component) Oracle Server (RDBMS)
    Range of versions believed to be affected Versions >= 9 but < 10G
    Versions confirmed as being affected 

        * 9.2.0.3

    Platforms affected Generic (all / most platforms affected)

Fixed:

    This issue is fixed in 

        * 9.2.0.4 (Server Patch Set)
        * 10G Production Base Release

Symptoms:

  &nbs

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