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oracle shared pool深入讨论(四)

原创 Oracle 作者:assion 时间:2007-11-07 21:16:39 0 删除 编辑

oracle shared pool深入讨论()

我们进一步来讨论一下shared pool的处理:

先进行相应查询,获得测试数据

[oracle@jumper udump]$ sqlplus "/ as sysdba"

SQL*Plus: Release 9.2.0.3.0 - Production on Thu Aug 26 10:21:54 2004

Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.

Connected to:
Oracle9i Enterprise Edition Release 9.2.0.3.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.3.0 - Production

SQL> connect eygle/eygle
Connected.

SQL> create table emp as select * from scott.emp;

Table created.

SQL>
SQL> connect / as sysdba
Connected.
SQL> startup force;
ORACLE instance started.

Total System Global Area 47256168 bytes
Fixed Size 451176 bytes
Variable Size 29360128 bytes
Database Buffers 16777216 bytes
Redo Buffers 667648 bytes
Database mounted.
Database opened.
SQL> set linesize 120
SQL> connect scott/tiger
Connected.
SQL> select * from emp;

EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- ---------- --------- ---------- --------- ---------- ---------- ----------
7369 SMITH CLERK 7902 17-DEC-80 800 20
8888 EYGLE MANAGER 11-AUG-04 9999 10 10
7566 JONES MANAGER 7839 02-APR-81 2975 20
7698 BLAKE MANAGER 7839 01-MAY-81 2850 30
7782 CLARK MANAGER 7839 09-JUN-81 2450 10
7788 SCOTT ANALYST 7566 19-APR-87 3000 20
7839 KING PRESIDENT 17-NOV-81 5000 10
7876 ADAMS CLERK 7788 23-MAY-87 1100 20
7900 JAMES CLERK 7698 03-DEC-81 950 30
7902 FORD ANALYST 7566 03-DEC-81 3000 20
7934 MILLER CLERK 7782 23-JAN-82 1300 10

11 rows selected.

SQL> connect eygle/eygle
Connected.
SQL> select * from emp;

EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- ---------- --------- ---------- --------- ---------- ---------- ----------
7369 SMITH CLERK 7902 17-DEC-80 800 20
8888 EYGLE MANAGER 11-AUG-04 9999 10 10
7566 JONES MANAGER 7839 02-APR-81 2975 20
7698 BLAKE MANAGER 7839 01-MAY-81 2850 30
7782 CLARK MANAGER 7839 09-JUN-81 2450 10
7788 SCOTT ANALYST 7566 19-APR-87 3000 20
7839 KING PRESIDENT 17-NOV-81 5000 10
7876 ADAMS CLERK 7788 23-MAY-87 1100 20
7900 JAMES CLERK 7698 03-DEC-81 950 30
7902 FORD ANALYST 7566 03-DEC-81 3000 20
7934 MILLER CLERK 7782 23-JAN-82 1300 10

11 rows selected.

SQL> select SQL_TEXT,VERSION_COUNT,HASH_VALUE,to_char(HASH_VALUE,'xxxxxxxxxx') HEX,ADDRESS
2 from v$sqlarea where sql_text like 'select * from emp%';

SQL_TEXT VERSION_COUNT HASH_VALUE HEX ADDRESS
-------------------- ------------- ---------- ----------- --------
select * from emp 2 2648707557 9de011e5 52D9EA28


SQL> select sql_text,username,ADDRESS,HASH_VALUE,to_char(HASH_VALUE,'xxxxxxxxxx') HEX_HASH_VALUE,CHILD_NUMBER,CHILD_LATCH
2 from v$sql a,dba_users b where a.PARSING_USER_ID = b.user_id and sql_text like 'select * from emp%';

SQL_TEXT USERNAME ADDRESS HASH_VALUE HEX_HASH_VA CHILD_NUMBER CHILD_LATCH
-------------------- ------------------------------ -------- ---------- ----------- ------------ -----------
select * from emp SCOTT 52D9EA28 2648707557 9de011e5 0 1
select * from emp EYGLE 52D9EA28 2648707557 9de011e5 1 1
注意:这里我们可以看出v$sqlareav$sql两个视图的不同之处

v$sql
中为每一条sql保留一个条目,而v$sqlarea中根据sql_text进行group by,通过version_count计算子指针的个数.
我们注意到,这两条sql语句因为其代码完全相同,所以其ADDRESS,HASH_VALUE也完全相同.这就意味着,这两条sql语句在shared pool中的存储位置是相同的(尽管其执行计划可能不同),代码得以共享.
在此过程中Oracle完成sql解析的第一个步骤:语法解析
Oracle
进行语法检查时遵循自右向左,自下向上的原则,如果发现语法错误就马上返回错误.
语法检查通过以后,Oraclesql文本转换为相应的ASCII数值,然后根据数值通过Hash函数计算其HASH_VALUEshared pool中寻找是否存在相同的sql语句,如果存在,则进入下一步骤;如果不存在则尝试获取shared pool latch请求内存,存储该sql代码
在这里有一个问题需要说明一下:因为大小写字母的ascii值是不同的,所以Oracle会把大小写不同的代码作为不同的sql来处理,我们看一下测试:

SQL> select * from scott.dept;

DEPTNO DNAME LOC
---------- -------------- -------------
10 ACCOUNTING NEW YORK
20 RESEARCH DALLAS
30 SALES CHICAGO
40 OPERATIONS BOSTON

SQL> select * from scott.DEPT;

DEPTNO DNAME LOC
---------- -------------- -------------
10 ACCOUNTING NEW YORK
20 RESEARCH DALLAS
30 SALES CHICAGO
40 OPERATIONS BOSTON

SQL> col sql_text for a30
SQL> select sql_text,hash_value from v$sql where sql_text like 'select * from scott%';

SQL_TEXT HASH_VALUE
------------------------------ ----------
select * from scott.DEPT 4096614922
select * from scott.dept 2089404358
我们注意到,仅只大小写的不同使得原本相同的sql语句变成了两条"不同的代码"所以从这里我们可以看出,sql的规范编写非常重要.
完成这一个步骤以后,Oracle需要进行的是语义分析:在此步骤中,Oracle需要验证对象是否存在,相关用户是否具有权限,引用的是否是相同的对象...对于我们第一个查询,实际上emp表来自不同的用户,那么sql的执行计划也就不同了当然影响sql执行计划的因素还有很多,包括优化器模式等

SQL> select a.*,to_char(to_hash,'xxxxxxxxxx') Hex_HASH_VALUE
2 from V$OBJECT_DEPENDENCY a where to_name='EMP';

FROM_ADD FROM_HASH TO_OWNER TO_NAME TO_ADDRE TO_HASH TO_TYPE HEX_HASH_VA
-------- ---------- -------------------- -------------------- -------- ---------- ---------- -----------
52D9EA28 2648707557 SCOTT EMP 52D9DEBC 828228010 2 315dc1aa
52D9EA28 2648707557 EYGLE EMP 52D82E58 1930491453 2 7310f63d

SQL> ALTER SESSION SET EVENTS 'immediate trace name LIBRARY_CACHE level 1';

Session altered.

SQL> ALTER SESSION SET EVENTS 'immediate trace name LIBRARY_CACHE level 2';

Session altered.

SQL> ALTER SESSION SET EVENTS 'immediate trace name LIBRARY_CACHE level 4';

Session altered.

SQL> ALTER SESSION SET EVENTS 'immediate trace name LIBRARY_CACHE level 8';

Session altered.

SQL> ALTER SESSION SET EVENTS 'immediate trace name LIBRARY_CACHE level 16';

Session altered.

SQL> ALTER SESSION SET EVENTS 'immediate trace name LIBRARY_CACHE level 32';

Session altered.


SQL> ALTER SESSION SET EVENTS 'immediate trace name LIBRARY_CACHE level 100';

Session altered.
此处在不同级别对shared pool进行转储.
Library Cache Handle
指向Library Cache Object,含对象名,namespace,时间戳,引用列表,锁定对象及pin对象列表等.

我们从dump文件中看看具体的信息,由以上v$sql视图我们得到以上查询的hash_value9de011e5ADDRESS52D9EA28

bucket 4851,我们找到了select * from emp 这条sql语句.

BUCKET 4581:
LIBRARY OBJECT HANDLE: handle=52d9ea28
name=select * from emp
hash=9de011e5 timestamp=08-26-2004 10:24:43

==>
这个hash正是v$sql中该sql语句的hash_value


namespace=CRSR flags=RON/TIM/PN0/SML/[12010000]
kkkk-dddd-llll=0000-0001-0001 lock=0 pin=0 latch#=1
lwt=0x52d9ea40[0x52d9ea40,0x52d9ea40] ltm=0x52d9ea48[0x52d9ea48,0x52d9ea48]
pwt=0x52d9ea58[0x52d9ea58,0x52d9ea58] ptm=0x52d9eab0[0x52d9eab0,0x52d9eab0]
ref=0x52d9ea30[0x52d9ea30, 0x52d9ea30] lnd=0x52d9eabc[0x52d9eabc,0x52d9eabc]
LIBRARY OBJECT: object=52d9e7b0
type=CRSR flags=EXS[0001] pflags= [00] status=VALD load=0
CHILDREN: size=16
child# table reference handle
------ -------- --------- --------
0 52d9e96c 52d9e6cc 52d9e4ac
1 52d9e96c 52d9e70c 52d885cc

==>
这就是我们前边提到过的子指针,每个都指向了一个不同的handle


DATA BLOCKS:
data# heap pointer status pins change alloc(K) size(K)
----- -------- -------- ------ ---- ------ -------- --------
0 52d9e9b8 52d9e838 I/-/A 0 NONE 0.86 1.09

==>
此处的heap就是指内存地址.


==>
这里存放的就是SQL代码及用户连接信息

HEAP DUMP OF DATA BLOCK 0:
******************************************************
HEAP DUMP heap name="library cache" desc=0x52d9e9b8
extent sz=0x224 alt=32767 het=16 rec=9 flg=2 opc=0
parent=0x5000002c owner=0x52d9e7b0 nex=(nil) xsz=0x224
EXTENT 0 addr=0x52d9e558
Chunk 52d9e560 sz= 540 perm "perm " alo=448
52D9E560 5000021D 00000000 52D9E7A0 000001C0 [...P.......R....]
52D9E570 52D9E704 52D9E660 00020002 52D9E57C [...R`..R....|..R]
52D9E580 52D9E57C 00000000 52D9E588 52D9E588 [|..R.......R...R]
52D9E590 00000000 52D9E594 52D9E594 00000000 [.......R...R....]
52D9E5A0 52D9E5A0 52D9E5A0 00000000 52D9E5AC [...R...R.......R]
52D9E5B0 52D9E5AC 00000000 52D9E5B8 52D9E5B8 [...R.......R...R]
52D9E5C0 00000000 52D9E5C4 52D9E5C4 00000000 [.......R...R....]
52D9E5D0 52D9E5D0 52D9E5D0 00000000 52D9E5DC [...R...R.......R]
52D9E5E0 52D9E5DC 00000000 52D9E5E8 52D9E5E8 [...R.......R...R]
52D9E5F0 00000000 52D9E5F4 52D9E5F4 00000000 [.......R...R....]
52D9E600 52D9E600 52D9E600 00000000 52D9E60C [...R...R.......R]
52D9E610 52D9E60C 00000000 52D9E618 52D9E618 [...R.......R...R]
52D9E620 00000000 52D9E624 52D9E624 00000000 [....$..R$..R....]
52D9E630 52D9E630 52D9E630 00040004 00000000 [0..R0..R........]
52D9E640 52D9E6E4 00000018 00000000 00000000 [...R............]
52D9E650 00000000 00000000 52D9E63C 00000000 [........<..R....]
52D9E660 52D9E570 52D9E704 00000000 00000000 [p..R...R........]
52D9E670 00000000 52D9E6BC 00000010 00000004 [.......R........]
52D9E680 00000000 00000000 00000000 00000000 [................]
Repeat 2 times
52D9E6B0 00000000 00000000 00000000 52D9E96C [............l..R]
52D9E6C0 00000000 00000000 00000000 52D9E4B4 [...............R]
52D9E6D0 52D9E4B4 52D9E4AC 00000000 00000002 [...R...R........]
52D9E6E0 00000000 00000000 00010018 00000001 [................]
52D9E6F0 00000000 00000000 00000000 52D9E6E0 [...............R]
52D9E700 00000000 52D9E660 52D9E570 52D885D4 [....`..Rp..R...R]
52D9E710 52D885D4 52D885CC 00000000 00000002 [...R...R........]
52D9E720 00000000 00000000 00000000 00000000 [................]
Repeat 4 times
52D9E770 00000000 00000000 00000000 [............]
EXTENT 1 addr=0x52d9e798
Chunk 52d9e7a0 sz= 360 perm "perm " alo=360
52D9E7A0 40000169 00000000 00000000 00000168 [i..@........h...]
52D9E7B0 52D9EA28 52D9E7B4 52D9E7B4 52D9E7BC [(..R...R...R...R]
52D9E7C0 52D9E7BC 52D9E668 00000000 00010001 [...Rh..R........]
52D9E7D0 00000000 00000000 00000000 00000000 [................]
52D9E7E0 52D9E824 00000000 00000000 00000000 [$..R............]
52D9E7F0 00000000 00000000 00000000 00000000 [................]
Repeat 2 times
52D9E820 00000000 52D9E9B8 00000000 52D9E838 [.......R....8..R]
52D9E830 00000000 52FF79A4 00080304 00000000 [.....y.R........]
52D9E840 00000100 00000000 00000000 00000010 [................]
52D9E850 00000004 00000000 00000000 00000000 [................]
52D9E860 00000000 52D9E640 00000002 2A4C5153 [....@..R....SQL*]
52D9E870 73756C50 706D756A 682E7265 61727275 [Plusjumper.hurra]
52D9E880 6F632E79 6E632E6D 4E542820 31562053 [y.com.cn (TNS V1]
52D9E890 2933562D 00000000 00000000 00000008 [-V3)............]
52D9E8A0 DABEFA60 00000000 00000000 00000000 [`...............]
52D9E8B0 00000000 00000000 00000000 00000000 [................]
52D9E8C0 00000000 00000000 F0318558 52D9E8D8 [........X.1....R]
52D9E8D0 52D9E630 00000000 52D9E570 00000000 [0..R....p..R....]
52D9E8E0 00000000 00000000 00000000 00000000 [................]
52D9E8F0 00000000 00000000 00000002 0000000D [................]
52D9E900 00000001 00000000 [........]
Chunk 52d9e908 sz= 88 free " "
52D9E900 C0000059 52D9E7A0 [Y......R]
52D9E910 52D9EA00 52D9EA00 00000000 00000000 [...R...R........]
52D9E920 00000000 00000000 00000000 00000000 [................]
Repeat 3 times
Chunk 52d9e960 sz= 76 freeable "kgltbtab "
52D9E960 1000004D 52D9E908 0A857928 52D9E6CC [M......R(y.....R]
52D9E970 52D9E70C 00000000 00000000 00000000 [...R............]
52D9E980 00000000 00000000 00000000 00000000 [................]
Repeat 1 times
52D9E9A0 00000000 00000000 00000000 [............]
Total heap size = 1064
FREE LISTS:
Bucket 0 size=0
Chunk 52d9e908 sz= 88 free " "
52D9E900 C0000059 52D9E7A0 [Y......R]
52D9E910 52D9EA00 52D9EA00 00000000 00000000 [...R...R........]
52D9E920 00000000 00000000 00000000 00000000 [................]
Repeat 3 times
Total free space = 88
UNPINNED RECREATABLE CHUNKS (lru first):
PERMANENT CHUNKS:
Chunk 52d9e560 sz= 540 perm "perm " alo=448
52D9E560 5000021D 00000000 52D9E7A0 000001C0 [...P.......R....]
52D9E570 52D9E704 52D9E660 00020002 52D9E57C [...R`..R....|..R]
52D9E580 52D9E57C 00000000 52D9E588 52D9E588 [|..R.......R...R]
52D9E590 00000000 52D9E594 52D9E594 00000000 [.......R...R....]
52D9E5A0 52D9E5A0 52D9E5A0 00000000 52D9E5AC [...R...R.......R]
52D9E5B0 52D9E5AC 00000000 52D9E5B8 52D9E5B8 [...R.......R...R]
52D9E5C0 00000000 52D9E5C4 52D9E5C4 00000000 [.......R...R....]
52D9E5D0 52D9E5D0 52D9E5D0 00000000 52D9E5DC [...R...R.......R]
52D9E5E0 52D9E5DC 00000000 52D9E5E8 52D9E5E8 [...R.......R...R]
52D9E5F0 00000000 52D9E5F4 52D9E5F4 00000000 [.......R...R....]
52D9E600 52D9E600 52D9E600 00000000 52D9E60C [...R...R.......R]
52D9E610 52D9E60C 00000000 52D9E618 52D9E618 [...R.......R...R]
52D9E620 00000000 52D9E624 52D9E624 00000000 [....$..R$..R....]
52D9E630 52D9E630 52D9E630 00040004 00000000 [0..R0..R........]
52D9E640 52D9E6E4 00000018 00000000 00000000 [...R............]
52D9E650 00000000 00000000 52D9E63C 00000000 [........<..R....]
52D9E660 52D9E570 52D9E704 00000000 00000000 [p..R...R........]
52D9E670 00000000 52D9E6BC 00000010 00000004 [.......R........]
52D9E680 00000000 00000000 00000000 00000000 [................]
Repeat 2 times
52D9E6B0 00000000 00000000 00000000 52D9E96C [............l..R]
52D9E6C0 00000000 00000000 00000000 52D9E4B4 [...............R]
52D9E6D0 52D9E4B4 52D9E4AC 00000000 00000002 [...R...R........]
52D9E6E0 00000000 00000000 00010018 00000001 [................]
52D9E6F0 00000000 00000000 00000000 52D9E6E0 [...............R]
52D9E700 00000000 52D9E660 52D9E570 52D885D4 [....`..Rp..R...R]
52D9E710 52D885D4 52D885CC 00000000 00000002 [...R...R........]
52D9E720 00000000 00000000 00000000 00000000 [................]
Repeat 4 times
52D9E770 00000000 00000000 00000000 [............]
Chunk 52d9e7a0 sz= 360 perm "perm " alo=360
52D9E7A0 40000169 00000000 00000000 00000168 [i..@........h...]
52D9E7B0 52D9EA28 52D9E7B4 52D9E7B4 52D9E7BC [(..R...R...R...R]
52D9E7C0 52D9E7BC 52D9E668 00000000 00010001 [...Rh..R........]
52D9E7D0 00000000 00000000 00000000 00000000 [................]
52D9E7E0 52D9E824 00000000 00000000 00000000 [$..R............]
52D9E7F0 00000000 00000000 00000000 00000000 [................]
Repeat 2 times
52D9E820 00000000 52D9E9B8 00000000 52D9E838 [.......R....8..R]
52D9E830 00000000 52FF79A4 00080304 00000000 [.....y.R........]
52D9E840 00000100 00000000 00000000 00000010 [................]
52D9E850 00000004 00000000 00000000 00000000 [................]
52D9E860 00000000 52D9E640 00000002 2A4C5153 [....@..R....SQL*]
52D9E870 73756C50 706D756A 682E7265 61727275 [Plusjumper.hurra]
52D9E880 6F632E79 6E632E6D 4E542820 31562053 [y.com.cn (TNS V1]
52D9E890 2933562D 00000000 00000000 00000008 [-V3)............]
52D9E8A0 DABEFA60 00000000 00000000 00000000 [`...............]
52D9E8B0 00000000 00000000 00000000 00000000 [................]
52D9E8C0 00000000 00000000 F0318558 52D9E8D8 [........X.1....R]
52D9E8D0 52D9E630 00000000 52D9E570 00000000 [0..R....p..R....]
52D9E8E0 00000000 00000000 00000000 00000000 [................]
52D9E8F0 00000000 00000000 00000002 0000000D [................]
52D9E900 00000001 00000000 [........]
Permanent space = 900
******************************************************
BUCKET 4581 total object count=1
我们以handle:52d885cc为例看一下Library Cache Object的结构:
******************************************************
LIBRARY OBJECT HANDLE: handle=52d885cc
namespace=CRSR flags=RON/KGHP/PN0/[10010000]
kkkk-dddd-llll=0000-0041-0041 lock=0 pin=0 latch#=1
lwt=0x52d885e4[0x52d885e4,0x52d885e4] ltm=0x52d885ec[0x52d885ec,0x52d885ec]
pwt=0x52d885fc[0x52d885fc,0x52d885fc] ptm=0x52d88654[0x52d88654,0x52d88654]
ref=0x52d885d4[0x52d9e70c, 0x52d9e70c] lnd=0x52d88660[0x52d88660,0x52d88660]
LIBRARY OBJECT: object=52d82a24
type=CRSR flags=EXS[0001] pflags= [00] status=VALD load=0
DEPENDENCIES: count=1 size=16
dependency# table reference handle position flags
----------- -------- --------- -------- -------- -------------------
0 52d82be0 52d82b20 52d82e58 14 DEP[01]

==>
dependency部分我们看到,这个cursor依赖的对象handle: 52d82e58
==>
这个handle指向的就是EYGLE.EMP表,如果以上两个CRSR访问的是同一个对象,那么
==>
这两个SQL才会是真的共享.这里我们的sql虽然是相同的,访问的却是不同用户的数据表
==>
子指针的概念就出来了.

==>
在这里我们看到52d82e58指向的是EYGLE.EMP这个对象,也就是EYGLE所查询的数据表.
ACCESSES: count=1 size=16
dependency# types
----------- -----
0 0009
TRANSLATIONS: count=1 size=16
original final
-------- --------
52d82e58 52d82e58
DATA BLOCKS:
data# heap pointer status pins change alloc(K) size(K)
----- -------- -------- ------ ---- ------ -------- --------
0 52d8c244 52d827e4 I/-/A 0 NONE 1.09 1.64
6 52d82ac0 52d817c4 I/-/A 0 NONE 3.70 3.73

==>
这里的Data Blocks是个重要的部分
==>
每个控制块包含一个heap descriptor,指向相应的heap memory,这个heap memory包含的就是
==>Diana Tree,P-Code,Source Code,Shared Cursor Context area
等重要数据,也就是我们通常
==>
所说的,解析过的SQL及执行计划树,真正到这里以后,sql才得以共享.也就真正的避免了硬
==>
解析

HEAP DUMP OF DATA BLOCK 0:
******************************************************

HEAP DUMP heap name="library cache" desc=0x52d8c244
extent sz=0x224 alt=32767 het=16 rec=9 flg=2 opc=0
parent=0x5000002c owner=0x52d82a24 nex=(nil) xsz=0x224
EXTENT 0 addr=0x52d80ff0
Chunk 52d80ff8 sz= 464 free " "
52D80FF0 C00001D1 00000000 [........]
52D81000 52D8C28C 52D8C28C 00000000 00000000 [...R...R........]
52D81010 00000000 00000000 00000000 00000000 [................]
Repeat 26 times
52D811C0 00000000 00000000 [........]
Chunk 52d811c8 sz= 76 freeable "kgltbtab "
52D811C0 1000004D 52D80FF8 [M......R]
52D811D0 0A857928 52D82B68 00000000 00000000 [(y..h+.R........]
52D811E0 00000000 00000000 00000000 00000000 [................]
Repeat 2 times
52D81210 00000000 [....]
EXTENT 1 addr=0x52d827cc
Chunk 52d827d4 sz= 540 perm "perm " alo=532
52D827D0 5000021D 00000000 52D82A14 [...P.....*.R]
52D827E0 00000214 00000000 0000001A 00000069 [............i...]
52D827F0 00000110 00000000 00000000 00000006 [................]
52D82800 00000850 00000010 00000008 00000005 [P...............]
52D82810 00000005 4C475945 00000045 00000000 [....EYGLE.......]
52D82820 00000000 00000000 00000000 00000000 [................]
52D82830 00050000 52D82970 00000000 00000000 [....p).R........]
52D82840 00000069 4C475945 00000045 00000000 [i...EYGLE.......]
52D82850 00000000 00000000 00000000 00000000 [................]
52D82860 00050000 00000001 00000004 00000019 [................]
52D82870 0000000B 00000000 00000002 00000001 [................]
52D82880 00002DC7 00000000 000030A4 00000000 [.-.......0......]
52D82890 00000000 04000000 00000000 00650000 [..............e.]
52D828A0 00100000 00050001 01050100 00000001 [................]
52D828B0 000007D0 00640000 00010000 01000000 [......d.........]
52D828C0 00000404 00000000 01010101 01010001 [................]
52D828D0 01010101 00010001 01010101 00000000 [................]
52D828E0 00000202 02010000 01010100 01010101 [................]
52D828F0 00000000 01000001 00000000 00000000 [................]
52D82900 00000000 00000000 00000000 1A086878 [............xh..]
52D82910 0036190B 00000000 000001C4 00000000 [..6.............]
52D82920 00000000 00000000 00000000 00000000 [................]
Repeat 1 times
52D82940 00022000 00000000 0000FFFF FFFFFFFF [. ..............]
52D82950 00000000 00000000 00000000 1A086878 [............xh..]
52D82960 0036190B 00000000 00000000 00000000 [..6.............]
52D82970 00000001 00000069 00000077 00000002 [....i...w.......]
52D82980 00000003 52D829D8 00010010 00000004 [.....).R........]
52D82990 00000000 00000000 00000000 00000000 [................]
52D829A0 00000000 00000000 52D82B58 00010010 [........X+.R....]
52D829B0 00000004 52D82B40 00010010 00000004 [....@+.R........]
52D829C0 00000000 00000000 00000000 00000000 [................]
52D829D0 00000000 00000000 52D82BE0 00000000 [.........+.R....]
52D829E0 00000000 00000000 00000000 00000000 [................]
EXTENT 2 addr=0x52d82a0c
Chunk 52d82a14 sz= 252 perm "perm " alo=252
52D82A10 400000FD 00000000 00000000 [...@........]
52D82A20 000000FC 52D885CC 52D82A28 52D82A28 [.......R(*.R(*.R]
52D82A30 52D82A30 52D82A30 52D82984 00000000 [0*.R0*.R.).R....]
52D82A40 00010001 00000000 00000000 00000000 [................]
52D82A50 00000000 52D82A98 00000000 00000000 [.....*.R........]
52D82A60 00000000 00000000 00000000 52D82AAC [.............*.R]
52D82A70 00000000 00000000 00000000 00000000 [................]
Repeat 1 times
52D82A90 00000000 00000000 52D8C244 00000000 [........D..R....]
52D82AA0 52D827E4 00000000 52FF5B74 52D82AC0 [.'.R....t[.R.*.R]
52D82AB0 00000000 52D817C4 00040000 52FF5B9C [.......R.....[.R]
52D82AC0 5000002C 00001024 52D82A24 52D817AC [,..P$...$*.R...R]
52D82AD0 52D817B4 00000000 52D8237C 05010200 [...R....|#.R....]
52D82AE0 00000000 00000000 206C7173 61657261 [........sql area]
52D82AF0 00000000 00000000 00107FFF 7FFF7FFF [................]
52D82B00 00000401 00000000 52D82B08 52D82B08 [.........+.R.+.R]
Chunk 52d82b10 sz= 120 perm "perm " alo=104
52D82B10 40000079 52D82A14 52D827D4 00000068 [y..@.*.R.'.Rh...]
52D82B20 52B2D470 52B2D470 52D82E58 00000000 [p..Rp..RX..R....]
52D82B30 00000001 52D82A24 0000000E 00000001 [....$*.R........]
52D82B40 52D82B94 00000000 00000000 00000000 [.+.R............]
52D82B50 52D82E58 52D82E58 52D811D4 00000000 [X..RX..R...R....]
52D82B60 00000000 00000000 00000000 00000000 [................]
52D82B70 02000000 00000000 00000000 00000000 [................]
52D82B80 00000000 00000000 [........]
Chunk 52d82b88 sz= 76 freeable "kgltbtab "
52D82B80 0000004D 52D82B10 [M....+.R]
52D82B90 0A857928 52D82B50 00000000 00000000 [(y..P+.R........]
52D82BA0 00000000 00000000 00000000 00000000 [................]
Repeat 2 times
52D82BD0 00000000 [....]
Chunk 52d82bd4 sz= 76 freeable "kgltbtab "
52D82BD0 1000004D 52D82B88 0A857928 [M....+.R(y..]
52D82BE0 52D82B20 00000000 00000000 00000000 [ +.R............]
52D82BF0 00000000 00000000 00000000 00000000 [................]
Repeat 2 times
Total heap size = 1604
FREE LISTS:
Bucket 0 size=0
Chunk 52d80ff8 sz= 464 free " "
52D80FF0 C00001D1 00000000 [........]
52D81000 52D8C28C 52D8C28C 00000000 00000000 [...R...R........]
52D81010 00000000 00000000 00000000 00000000 [................]
Repeat 26 times
52D811C0 00000000 00000000 [........]
Total free space = 464
UNPINNED RECREATABLE CHUNKS (lru first):
PERMANENT CHUNKS:
Chunk 52d82b10 sz= 120 perm "perm " alo=104
52D82B10 40000079 52D82A14 52D827D4 00000068 [y..@.*.R.'.Rh...]
52D82B20 52B2D470 52B2D470 52D82E58 00000000 [p..Rp..RX..R....]
52D82B30 00000001 52D82A24 0000000E 00000001 [....$*.R........]
52D82B40 52D82B94 00000000 00000000 00000000 [.+.R............]
52D82B50 52D82E58 52D82E58 52D811D4 00000000 [X..RX..R...R....]
52D82B60 00000000 00000000 00000000 00000000 [................]
52D82B70 02000000 00000000 00000000 00000000 [................]
52D82B80 00000000 00000000 [........]
Chunk 52d827d4 sz= 540 perm "perm " alo=532
52D827D0 5000021D 00000000 52D82A14 [...P.....*.R]
52D827E0 00000214 00000000 0000001A 00000069 [............i...]
52D827F0 00000110 00000000 00000000 00000006 [................]
52D82800 00000850 00000010 00000008 00000005 [P...............]
52D82810 00000005 4C475945 00000045 00000000 [....EYGLE.......]
52D82820 00000000 00000000 00000000 00000000 [................]
52D82830 00050000 52D82970 00000000 00000000 [....p).R........]
52D82840 00000069 4C475945 00000045 00000000 [i...EYGLE.......]
52D82850 00000000 00000000 00000000 00000000 [................]
52D82860 00050000 00000001 00000004 00000019 [................]
52D82870 0000000B 00000000 00000002 00000001 [................]
52D82880 00002DC7 00000000 000030A4 00000000 [.-.......0......]
52D82890 00000000 04000000 00000000 00650000 [..............e.]
52D828A0 00100000 00050001 01050100 00000001 [................]
52D828B0 000007D0 00640000 00010000 01000000 [......d.........]
52D828C0 00000404 00000000 01010101 01010001 [................]
52D828D0 01010101 00010001 01010101 00000000 [................]
52D828E0 00000202 02010000 01010100 01010101 [................]
52D828F0 00000000 01000001 00000000 00000000 [................]
52D82900 00000000 00000000 00000000 1A086878 [............xh..]
52D82910 0036190B 00000000 000001C4 00000000 [..6.............]
52D82920 00000000 00000000 00000000 00000000 [................]
Repeat 1 times
52D82940 00022000 00000000 0000FFFF FFFFFFFF [. ..............]
52D82950 00000000 00000000 00000000 1A086878 [............xh..]
52D82960 0036190B 00000000 00000000 00000000 [..6.............]
52D82970 00000001 00000069 00000077 00000002 [....i...w.......]
52D82980 00000003 52D829D8 00010010 00000004 [.....).R........]
52D82990 00000000 00000000 00000000 00000000 [................]
52D829A0 00000000 00000000 52D82B58 00010010 [........X+.R....]
52D829B0 00000004 52D82B40 00010010 00000004 [....@+.R........]
52D829C0 00000000 00000000 00000000 00000000 [................]
52D829D0 00000000 00000000 52D82BE0 00000000 [.........+.R....]
52D829E0 00000000 00000000 00000000 00000000 [................]
Chunk 52d82a14 sz= 252 perm "perm " alo=252
52D82A10 400000FD 00000000 00000000 [...@........]
52D82A20 000000FC 52D885CC 52D82A28 52D82A28 [.......R(*.R(*.R]
52D82A30 52D82A30 52D82A30 52D82984 00000000 [0*.R0*.R.).R....]
52D82A40 00010001 00000000 00000000 00000000 [................]
52D82A50 00000000 52D82A98 00000000 00000000 [.....*.R........]
52D82A60 00000000 00000000 00000000 52D82AAC [.............*.R]
52D82A70 00000000 00000000 00000000 00000000 [................]
Repeat 1 times
52D82A90 00000000 00000000 52D8C244 00000000 [........D..R....]
52D82AA0 52D827E4 00000000 52FF5B74 52D82AC0 [.'.R....t[.R.*.R]
52D82AB0 00000000 52D817C4 00040000 52FF5B9C [.......R.....[.R]
52D82AC0 5000002C 00001024 52D82A24 52D817AC [,..P$...$*.R...R]
52D82AD0 52D817B4 00000000 52D8237C 05010200 [...R....|#.R....]
52D82AE0 00000000 00000000 206C7173 61657261 [........sql area]
52D82AF0 00000000 00000000 00107FFF 7FFF7FFF [................]
52D82B00 00000401 00000000 52D82B08 52D82B08 [.........+.R.+.R]
Permanent space = 912
******************************************************
HEAP DUMP OF DATA BLOCK 6:
******************************************************
HEAP DUMP heap name="sql area" desc=0x52d82ac0
extent sz=0x1024 alt=32767 het=16 rec=0 flg=2 opc=5
parent=0x5000002c owner=0x52d82a24 nex=(nil) xsz=0x0
EXTENT 0 addr=0x52d817ac
Chunk 52d817b4 sz= 3784 perm "perm " alo=3784
52D817B0 50000EC9 00000000 00000000 [...P........]
52D817C0 00000EC8 00000010 00000004 00000010 [................]
52D817D0 00000004 00000000 00000000 00000000 [................]
52D817E0 00000000 00000000 00000008 00000000 [................]
52D817F0 00000000 52D81F5C 404EEB2C 00000000 [......R,.N@....]
52D81800 00000000 00000000 00000000 52D81A08 [...............R]
52D81810 00000000 00000000 00000110 00000003 [................]
52D81820 00000000 00000000 00000000 1A086878 [............xh..]
52D81830 0029180B 00000000 00000000 00000000 [..).............]
52D81840 52D81C10 52D82540 00000000 52D824D4 [...R@%.R.....$.R]
52D81850 00000000 00000000 00000000 52D81B7C [............|..R]
52D81860 00000000 00000000 00000001 52D81BFC [...............R]
52D81870 52D82360 00000000 00000000 52D82894 [`#.R.........(.R]
52D81880 00000000 00000000 00000000 00000000 [................]
Repeat 1 times
52D818A0 00000000 00000000 08000000 52D823AC [.............#.R]
52D818B0 00000001 00000000 00000000 00000000 [................]
52D818C0 00000024 00000000 00000000 00000000 [$...............]
52D818D0 00000000 00000000 00000000 52D81C1C [...............R]
52D818E0 00000000 00000000 00000000 52D82620 [............ &.R]
52D818F0 00000000 00000000 00000000 52D81958 [............X..R]
52D81900 00000000 00000000 00000000 00000000 [................]
52D81910 00000000 00000000 52D8252C 00010001 [........,%.R....]
52D81920 EBCE39A4 00000000 00000000 00000000 [.9..............]
52D81930 00000000 00000000 00000000 00000001 [................]
52D81940 00000001 00000794 00000000 00000001 [................]
52D81950 00000001 00000008 00000000 52D817C4 [...............R]
52D81960 00000000 00000000 00000202 00000000 [................]
52D81970 52D819B8 52D819A0 52D81990 5001A874 [...R...R...Rt..P]
52D81980 00000000 00000000 52D819FC 52D819CC [...........R...R]
52D81990 52D82AC0 404EFB80 00000000 00000000 [.*.R..N@........]
52D819A0 00000000 00000000 52D81958 00000000 [........X..R....]
52D819B0 00000000 00000000 00000000 52D81958 [............X..R]
52D819C0 00000002 52D885CC 00000000 52D819E4 [.......R.......R]
52D819D0 00000000 00000000 00000000 00000000 [................]
Repeat 1 times
52D819F0 00000001 00000000 00000000 52D81958 [............X..R]
52D81A00 00000000 00000000 4C475945 00000045 [........EYGLE...]
52D81A10 00000000 00000000 00000000 00000000 [................]
52D81A20 00000000 00050000 00000069 0000000E [........i.......]
52D81A30 4D450003 00000050 00000000 00000500 [..EMP...........]
52D81A40 00000000 00000000 00000000 00000000 [................]
Repeat 1 times
52D81A60 404EE794 00000000 00000000 00000014 [..N@............]
52D81A70 00000004 00000000 00000000 00000000 [................]
52D81A80 00000000 00000000 00000000 00000000 [................]
52D81A90 00000000 00000000 00000000 00003F09 [.............?..]
52D81AA0 00000001 00000000 00000000 00000000 [................]
52D81AB0 00000000 00000069 00080008 00000000 [....i...........]
52D81AC0 08687800 29180B1A 1A086878 7829180B [.xh....)xh....)x]
52D81AD0 0B1A0868 00002918 00000000 00000000 [h....)..........]
52D81AE0 00000000 00000000 00000000 00000000 [................]
52D81AF0 00000000 00000001 00000000 000002E0 [................]
52D81B00 00000000 00000008 00000000 00000000 [................]
52D81B10 00000000 404EEC04 00000000 52D81B9C [......N@.......R]
52D81B20 52D81B9C 00000000 00000000 00000000 [...R............]
52D81B30 00000000 00000000 00000000 00000000 [................]
52D81B40 00000000 00000000 00000000 20000000 [............... ]
52D81B50 00000000 00000000 00000000 00000000 [................]
Repeat 1 times
52D81B70 00000000 00000000 00000000 52D81948 [............H..R]
52D81B80 00000000 00000002 00000008 0000000E [................]
52D81B90 59450005 00454C47 00000000 00000000 [..EYGLE.........]
52D81BA0 40548000 00000001 00000064 00000000 [..T@....d.......]
52D81BB0 00000000 00000000 00000000 00000000 [................]
Repeat 1 times
52D81BD0 00000000 00002000 00000000 00000000 [..... ..........]
52D81BE0 00000000 00000000 00000000 00000000 [................]
52D81BF0 00000000 00000000 00003F09 00000000 [.........?......]
52D81C00 00000014 00000004 00000001 00000000 [................]
52D81C10 00000000 00003F09 00010000 52D81FD4 [.....?.........R]
52D81C20 52D81F08 52D81F64 00000000 00000010 [...Rd..R........]
52D81C30 00000007 00000100 00000000 00000000 [................]
52D81C40 00000000 00000000 00000000 00000010 [................]
52D81C50 00000104 00000000 00000000 00000000 [................]
52D81C60 00000000 00000000 00000000 00000000 [................]
52D81C70 52D81A2C 00000000 404EE794 00000000 [,..R......N@....]
52D81C80 00000000 00000007 00000102 00000000 [................]
52D81C90 00010041 00000000 00000014 00000004 [A...............]
52D81CA0 00000010 000001A0 00000016 00000000 [................]
52D81CB0 52D824B4 00040000 00000000 52D82300 [.$.R.........#.R]
52D81CC0 00000000 52D81A2C 52D81FC4 404EE794 [....,..R...R..N@]
52D81CD0 00000000 00000000 00000000 52D81C84 [...............R]
52D81CE0 00000007 00000102 00000000 00010041 [............A...]
52D81CF0 00000000 00000014 0000001C 00000010 [................]
52D81D00 00000194 00000016 00000000 52D82494 [.............$.R]
52D81D10 00040000 00000000 52D822A0 00000000 [.........".R....]
52D81D20 52D81A2C 52D81FB8 404EE794 00000000 [,..R...R..N@....]
52D81D30 00000000 52D81CD8 52D81CE0 00000007 [.......R...R....]
52D81D40 00000102 00000000 00010041 00000000 [........A.......]
52D81D50 00000014 00000034 00000010 00000188 [....4...........]
52D81D60 00000016 00000000 52D82474 00040000 [........t$.R....]
52D81D70 00000000 52D82240 00000000 52D81A2C [....@".R....,..R]
52D81D80 52D81FAC 404EE794 00000000 00000000 [...R..N@........]
52D81D90 52D81D34 52D81D3C 00000007 0000010C [4..R<..R........]
52D81DA0 00000000 00010041 00000000 00000014 [....A...........]
52D81DB0 0000004C 00000010 0000017C 00000007 [L.......|.......]
52D81DC0 00000000 52D82454 00040000 00000000 [....T$.R........]
52D81DD0 52D821E0 00000000 52D81A2C 52D81F9C [.!.R....,..R...R]
52D81DE0 404EE794 00000000 00000000 52D81D90 [..N@...........R]
52D81DF0 52D81D98 00000007 00000102 00000000 [...R............]
52D81E00 00010041 00000000 00000014 00000054 [A...........T...]
52D81E10 00000010 00000170 00000016 00000000 [....p...........]
52D81E20 52D82434 00040000 00000000 52D82180 [4$.R.........!.R]
52D81E30 00000000 52D81A2C 52D81F90 404EE794 [....,..R...R..N@]
52D81E40 00000000 00000000 52D81DEC 52D81DF4 [...........R...R]
52D81E50 00000007 00000101 00010354 00010041 [........T...A...]
52D81E60 00040000 00000014 0000006C 00000010 [........l.......]
52D81E70 00000164 00090009 00000000 52D82414 [d............$.R]
52D81E80 00040000 00000000 52D82120 00000000 [........ !.R....]
52D81E90 52D81A2C 52D81F84 404EE794 00000000 [,..R...R..N@....]
52D81EA0 00000000 52D81E48 52D81E50 00000007 [....H..RP..R....]
52D81EB0 00000101 00010354 00010041 00040000 [....T...A.......]
52D81EC0 00000014 00000078 00000010 00000158 [....x.......X...]
52D81ED0 000A000A 00000000 52D823F4 00040000 [.........#.R....]
52D81EE0 00000000 52D820C0 00000000 52D81A2C [..... .R....,..R]
52D81EF0 52D81F74 404EE794 00000000 00000000 [t..R..N@........]
52D81F00 52D81EA4 52D81EAC 00000007 00000102 [...R...R........]
52D81F10 00000000 00010041 00000000 00000014 [....A...........]
52D81F20 00000084 00000010 0000014C 00000016 [........L.......]
52D81F30 00000000 52D823D4 00040000 00000000 [.....#.R........]
52D81F40 52D82060 00000000 52D81A2C 52D81F64 [` .R....,..Rd..R]
52D81F50 404EE794 00000000 00000000 52D81F00 [..N@...........R]
52D81F60 52D81F08 00000007 4D450005 004F4E50 [...R......EMPNO.]
52D81F70 00000000 00000007 4E450005 00454D41

来自 “ ITPUB博客 ” ,链接:http://blog.itpub.net/548588/viewspace-981229/,如需转载,请注明出处,否则将追究法律责任。

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注册时间:2009-01-06

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