标签：cost size pos 环境 lag count intern created dual
[20181007]12cR2 Using SQL Patch 2.txt
--//12cR2 已经把sql打补丁集成进入dbms_sqldiag,不是11g的 DBMS_SQLDIAG_INTERNAL.I_CREATE_PATCH .做一个记录.
--//以前的链接:http://blog.itpub.net/267265/viewspace-751900/=>[20121231]给sql打补丁.txt
--//想看看打补丁的提示写入那张表.奇怪没有地方显示hint_text信息.
1.环境:
SCOTT@test01p> @ ver1
PORT_STRING VERSION BANNER CON_ID
------------------------------ -------------- -------------------------------------------------------------------------------- ----------
IBMPC/WIN_NT64-9.1.0 12.2.0.1.0 Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production 0
SCOTT@test01p> select /*+ full(dept) */ * from dept where deptno=10;
DEPTNO DNAME LOC
----------------- -------------------- -------------
10 ACCOUNTING NEW YORK
--//sql_id=g0qybdz1796cn
SCOTT@test01p> select text_vc c100 from dba_views where view_name=‘DBA_SQL_PATCHES‘;
C100
----------------------------------------------------------------------------------------------------
SELECT
so.name, so.category, so.signature, st.sql_text,
ad.created, ad.last_modified, ad.description,
DECODE(BITAND(so.flags, 1), 1, ‘ENABLED‘, ‘DISABLED‘),
DECODE(BITAND(sq.flags, 1), 1, ‘YES‘, ‘NO‘),
ad.task_id, ad.task_exec_name, ad.task_obj_id, ad.task_fnd_id,
ad.task_rec_id
FROM
sqlobj$ so,
sqlobj$auxdata ad,
sql$text st,
sql$ sq
WHERE
so.signature = st.signature AND
so.signature = ad.signature AND
so.category = ad.category AND
so.signature = sq.signature AND
so.obj_type = 3 AND
ad.obj_type = 3
--//我查询这些sqlobj$,sqlobj$auxdata,sql$text,sql$表,没有对应的提示信息.
2.跟踪看看:
SCOTT@test01p> @ 10046on 12
Session altered.
SCOTT@test01p> exec :patch_name := dbms_sqldiag.create_sql_patch(sql_id=>‘g0qybdz1796cn‘,hint_text=>‘result_cache INDEX_RS_ASC(@"SEL$1" "DEPT"@"SEL$1" ("DEPT"."DEPTNO"))‘);
PL/SQL procedure successfully completed.
SCOTT@test01p> @ 10046off
Session altered.
--//查看跟踪文件可以发现如下,检索result_cache 就可以发现如下:
PARSING IN CURSOR #31521616 len=1500 dep=1 uid=0 oct=189 lid=0 tim=9303948110 hv=2730219038 ad=‘7ff16b8ca68‘ sqlid=‘2azfx4fjbrphy‘
MERGE /*+ INDEX(dest (signature category obj_type plan_id)) */
INTO sqlobj$data dest
USING (SELECT :1 signature
,:2 category
,:3 obj_type
,:4 plan_id
FROM DUAL) src
ON ( dest.signature = src.signature
AND dest.category = src.category
AND dest.obj_type = src.obj_type
AND dest.plan_id = src.plan_id)
WHEN MATCHED
THEN
UPDATE SET comp_data = :5
DELETE
WHERE signature = :6
AND category = :7
AND obj_type = :8
AND plan_id = :9
AND :10 = 0
WHEN NOT MATCHED
THEN
INSERT
(
signature
,category
,obj_type
,plan_id
,comp_data
,spare1
,spare2
)
VALUES
(
:11
,:12
,:13
,:14
,:15
,NULL
,NULL
)
WHERE (:16 > 0)
--//为了好看,我做了格式化处理.
END OF STMT
PARSE #31521616:c=0,e=548,p=0,cr=0,cu=0,mis=1,r=0,dep=1,og=1,plh=0,tim=9303948110
BINDS #813829336:
Bind#0
oacdty=02 mxl=22(22) mxlc=00 mal=00 scl=00 pre=00
oacflg=00 fl2=1000001 frm=00 csi=00 siz=24 off=0
kxsbbbfp=2eca1bc8 bln=22 avl=03 flg=05
value=336
...
Bind#14
oacdty=01 mxl=128(122) mxlc=00 mal=00 scl=00 pre=00
oacflg=21 fl2=0000 frm=01 csi=852 siz=0 off=488
kxsbbbfp=2ed21750 bln=128 avl=122 flg=01
value="<outline_data><hint><![CDATA[result_cache INDEX_RS_ASC(@"SEL$1" "DEPT"@"SEL$1" ("DEPT"."DEPTNO"))]]></hint></outline_data>"
Bind#15
oacdty=02 mxl=22(22) mxlc=00 mal=00 scl=00 pre=00
oacflg=01 fl2=0000 frm=00 csi=00 siz=0 off=616
kxsbbbfp=2ed217d0 bln=22 avl=03 flg=01
value=122
EXEC #31521616:c=15600,e=258743,p=0,cr=148,cu=6,mis=1,r=1,dep=1,og=1,plh=4253447951,tim=9304207021
STAT #31521616 id=1 cnt=0 pid=0 pos=1 obj=0 op=‘MERGE SQLOBJ$DATA (cr=1 pr=0 pw=1 str=1 time=237554 us)‘
STAT #31521616 id=2 cnt=1 pid=1 pos=1 obj=0 op=‘VIEW (cr=1 pr=0 pw=0 str=1 time=23 us)‘
STAT #31521616 id=3 cnt=1 pid=2 pos=1 obj=0 op=‘NESTED LOOPS OUTER (cr=1 pr=0 pw=0 str=1 time=19 us cost=2 size=1066 card=1)‘
STAT #31521616 id=4 cnt=1 pid=3 pos=1 obj=0 op=‘VIEW (cr=0 pr=0 pw=0 str=1 time=4 us cost=2 size=62 card=1)‘
STAT #31521616 id=5 cnt=1 pid=4 pos=1 obj=0 op=‘FAST DUAL (cr=0 pr=0 pw=0 str=1 time=1 us cost=2 size=0 card=1)‘
STAT #31521616 id=6 cnt=0 pid=3 pos=2 obj=341 op=‘INDEX UNIQUE SCAN SQLOBJ$DATA_PKEY (cr=1 pr=0 pw=0 str=1 time=12 us cost=0 size=1004 card=1)‘
CLOSE #31521616:c=0,e=10,dep=1,type=0,tim=9304208195
--//表SQLOBJ$DATA
SCOTT@test01p> @ pt2 ‘select * from sys.SQLOBJ$DATA‘
ROW_NUM COL_NUM COL_NAME COL_VALUE
----------------- ----------------- -------------------- ----------------------------------------------------------------------------------------------------
1 1 SIGNATURE 16064551385586871472
2 CATEGORY DEFAULT
3 OBJ_TYPE 3
4 PLAN_ID 0
5 COMP_DATA <outline_data><hint><![CDATA[result_cache INDEX_RS_ASC(@"SEL$1" "DEPT"@"SEL$1" ("DEPT"."DEPTNO"))]]>
--//查询依赖关系:
SCOTT@test01p> @ pt2 ‘select * from sys.SQLOBJ$DATA_DATAPUMP‘
ROW_NUM COL_NUM COL_NAME COL_VALUE
----------------- ----------------- -------------------- ----------------------------------------------------------------------------------------------------
1 1 SIGNATURE 16064551385586871472
2 CATEGORY DEFAULT
3 OBJ_TYPE 3
4 PLAN_ID 0
5 COMP_DATA <outline_data><hint><![CDATA[result_cache INDEX_RS_ASC(@"SEL$1" "DEPT"@"SEL$1" ("DEPT"."DEPTNO"))]]>
SCOTT@test01p> select text_vc c100 from dba_views where view_name=‘SQLOBJ$DATA_DATAPUMP‘;
C100
----------------------------------------------------------------------------------------------------
SELECT "SIGNATURE","CATEGORY","OBJ_TYPE","PLAN_ID","COMP_DATA","SPARE1","SPARE2" FROM sqlobj$data
--//很奇怪,oracle设计没有视图很好的查询相关信息.
[20181007]12cR2 Using SQL Patch 2.txt
标签：cost size pos 环境 lag count intern created dual
原文地址：https://www.cnblogs.com/lfree/p/9751746.html
