Daily Archives: 2012 年 05 月 07 日

db2 内存监控

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active databa 列表

[db2inst1@xifenfei ~]$ db2 list active databases

                           Active Databases

Database name                              = XIFENFEI
Applications connected currently           = 1
Database path                              = /home/db2inst1/db2inst1/NODE0000/SQL00003/

查看db2各个组件内存分配

[db2inst1@xifenfei ~]$ db2mtrk -i -p -v -d
Tracking Memory on: 2012/05/07 at 22:13:44

Memory for instance

   Other Memory is of size 10682368 bytes
   FCMBP Heap is of size 786432 bytes
   Database Monitor Heap is of size 327680 bytes
   Total: 11796480 bytes

Memory for database: XIFENFEI

   Backup/Restore/Util Heap is of size 65536 bytes
   Package Cache is of size 196608 bytes
   Other Memory is of size 131072 bytes
   Catalog Cache Heap is of size 65536 bytes
   Buffer Pool Heap (1) is of size 72482816 bytes
   Buffer Pool Heap (System 32k buffer pool) is of size 851968 bytes
   Buffer Pool Heap (System 16k buffer pool) is of size 589824 bytes
   Buffer Pool Heap (System 8k buffer pool) is of size 458752 bytes
   Buffer Pool Heap (System 4k buffer pool) is of size 393216 bytes
   Shared Sort Heap is of size 65536 bytes
   Lock Manager Heap is of size 10551296 bytes
   Database Heap is of size 13172736 bytes
   Application Heap (13) is of size 65536 bytes
   Application Heap (12) is of size 65536 bytes
   Application Heap (11) is of size 65536 bytes
   Application Heap (10) is of size 65536 bytes
   Application Heap (9) is of size 65536 bytes
   Applications Shared Heap is of size 196608 bytes
   Total: 99549184 bytes

Memory for agent 33

   Other Memory is of size 196608 bytes
   Total: 196608 bytes

Memory for agent 32

   Other Memory is of size 196608 bytes
   Total: 196608 bytes

Memory for agent 31

   Other Memory is of size 196608 bytes
   Total: 196608 bytes

Memory for agent 30

   Other Memory is of size 196608 bytes
   Total: 196608 bytes

Memory for agent 19

   Other Memory is of size 393216 bytes
   Total: 393216 bytes

查看内存统计(9.5及其以后版本)

[db2inst1@xifenfei ~]$ db2pd -dbptnmem -db xff

Database XFF not activated on database partition 0.

Option -dbptnmem is an instance scope option.  The database option has been ignored.

Database Partition 0 -- Active -- Up 0 days 00:05:30 -- Date 2012-05-07-22.16.43.375064

Database Partition Memory Controller Statistics

Controller Automatic: Y
Memory Limit:         775904 KB
Current usage:        306560 KB
HWM usage:            306816 KB
Cached memory:        78144 KB

Individual Memory Consumers:

Name             Mem Used (KB) HWM Used (KB) Cached (KB)
========================================================
APPL-XIFENFEI            40000         40000       39488
DBMS-db2inst1            31936         31936        4992
FMP_RESOURCES            22528         22528           0
PRIVATE                   6272          6272           0
LCL-p8353                  128           128           0
LCL-p8353                  128           128           0
DB-XIFENFEI             205568        205568       33664

查看内存段粗略信息
可以通过-db database 指定具体数据库

[db2inst1@xifenfei ~]$ db2pd -memset

Database Partition 0 -- Active -- Up 0 days 00:18:39 -- Date 2012-05-07-22.29.52.410789

Memory Sets:
Name         Address    Id          Size(Kb)   Key         DBP    Type   Unrsv(Kb)  Used(Kb)   HWM(Kb)    Cmt(Kb)    Uncmt(Kb) 
DBMS         0x10000000 32769       31936      0xF5EDE61   0      0      4992       11648      11648      11648      20288     
FMP          0x11F30000 65538       22592      0x0         0      0      2          0          192        22592      0         
Trace        0x00000000 0           8510       0xF5EDE74   0      -1     0          8510       0          8510       0         

--指定数据库名称
[db2inst1@xifenfei ~]$ db2pd -memset -db xifenfei

Database Partition 0 -- Database XIFENFEI -- Active -- Up 0 days 01:26:18 -- Date 2012-05-07-23.56.47.325997

Memory Sets:
Name         Address    Id          Size(Kb)   Key         DBP    Type   Unrsv(Kb)  Used(Kb)   HWM(Kb)    Cmt(Kb)    Uncmt(Kb) 
XIFENFEI     0xA62E9000 1015815     205632     0x0         0      1      33664      96832      96832      96832      108800    
AppCtl       0xB2BB9000 983046      40064      0x0         0      12     0          576        832        832        39232     
App38        0x00000000 0           0          0x0         0      0      0          0          0          0          0         
App37        0x00000000 0           0          0x0         0      0      0          0          0          0          0         
App36        0x00000000 0           0          0x0         0      0      0          0          0          0          0         
App35        0x00000000 0           0          0x0         0      0      0          0          0          0          0         
App34        0x000E8005 950277      128        0x0         0      4      0          128        0          128        0

查看内存段具体信息

[db2inst1@xifenfei ~]$ db2pd -mempool

Database Partition 0 -- Active -- Up 0 days 00:18:48 -- Date 2012-05-07-22.30.01.008074

Memory Pools:
Address    MemSet   PoolName   Id    Overhead   LogSz       LogUpBnd    LogHWM      PhySz       PhyUpBnd    PhyHWM      Bnd BlkCnt CfgParm   
0x10000AA4 DBMS     fcm        74    0          0           608414      0           0           655360      0           Ovf 0      n/a       
0x100009F0 DBMS     fcmsess    77    65440      845168      1118208     845168      983040      1179648     983040      Ovf 3      n/a       
0x1000093C DBMS     fcmchan    79    65440      159488      405504      159488      327680      458752      327680      Ovf 3      n/a       
0x10000888 DBMS     fcmbp      13    65440      590592      860160      590592      786432      917504      786432      Ovf 3      n/a       
0x100007D4 DBMS     fcmctl     73    186304     1176241     3118764     1176241     1376256     3145728     1376256     Ovf 11     n/a       
0x10000720 DBMS     monh       11    122592     144003      368640      144251      327680      393216      327680      Ovf 18     MON_HEAP_SZ
0x1000066C DBMS     resynch    62    26928      104080      1703936     104080      196608      1703936     196608      Ovf 2      n/a       
0x100005B8 DBMS     apmh       70    2672       459104      4325376     459636      524288      4325376     524288      Ovf 25     n/a       
0x10000504 DBMS     kerh       52    112        276828      3997696     276828      327680      3997696     327680      Ovf 65     n/a       
0x10000450 DBMS     bsuh       71    65408      2235556     8978432     2266560     2359296     8978432     2359296     Ovf 44     n/a       
0x1000039C DBMS     sqlch      50    0          1681833     1703936     1681833     1703936     1703936     1703936     Ovf 203    n/a       
0x100002E8 DBMS     krcbh      69    0          106248      65536       106352      131072      65536       131072      Ovf 14     n/a       
0x10000234 DBMS     eduah      72    1904       2816016     2816048     2816016     2818048     2818048     2818048     Ovf 1      n/a       
0x11F30234 FMP      undefh     59    8048       122900      22971520    122900      131072      23003136    131072      Phy 1      n/a       

--指定数据库名称
[db2inst1@xifenfei ~]$ db2pd -mempool -db xifenfei

Database Partition 0 -- Database XIFENFEI -- Active -- Up 0 days 00:05:29 -- Date 2012-05-07-22.35.58.149684

Memory Pools:
Address    MemSet   PoolName   Id    Overhead   LogSz       LogUpBnd    LogHWM      PhySz       PhyUpBnd    PhyHWM      Bnd BlkCnt CfgParm   
0xA62E9E28 XIFENFEI utilh      5     0          2120        24313856    2544        65536       24313856    65536       Ovf 10     UTIL_HEAP_SZ
0xA62E9CC0 XIFENFEI pckcacheh  7     29216      115799      Unlimited   117211      196608      Unlimited   196608      Ovf 4      PCKCACHESZ
0xA62E9C0C XIFENFEI xmlcacheh  93    50944      80008       20971520    80008       131072      20971520    131072      Ovf 1      n/a       
0xA62E9B58 XIFENFEI catcacheh  8     0          59488       Unlimited   59488       65536       Unlimited   65536       Ovf 9      CATALOGCACHE_SZ
0xA62E99F0 XIFENFEI bph        16    114464     72118000    Unlimited   72118000    72482816    Unlimited   72482816    Ovf 535    n/a       
0xA62E9888 XIFENFEI bph        16    32         782592      Unlimited   782592      851968      Unlimited   851968      Ovf 5      n/a       
0xA62E9720 XIFENFEI bph        16    32         520448      Unlimited   520448      589824      Unlimited   589824      Ovf 3      n/a       
0xA62E95B8 XIFENFEI bph        16    32         389376      Unlimited   389376      458752      Unlimited   458752      Ovf 2      n/a       
0xA62E9450 XIFENFEI bph        16    32         323840      Unlimited   323840      393216      Unlimited   393216      Ovf 2      n/a       
0xA62E939C XIFENFEI shsorth    18    0          8860        28770304    8860        65536       28770304    65536       Ovf 16     SHEAPTHRES_SHR
0xA62E92E8 XIFENFEI lockh      4     32         10487424    10616832    10487424    10551296    10616832    10551296    Ovf 1      LOCKLIST  
0xA62E9234 XIFENFEI dbh        2     419040     12439291    24903680    12441635    13172736    24903680    13172736    Ovf 739    DBHEAP    
0xB2BB966C AppCtl   apph       1     0          7452        1048576     7452        65536       1048576     65536       Phy 17     APPLHEAPSZ
0xB2BB95B8 AppCtl   apph       1     0          7452        1048576     7452        65536       1048576     65536       Phy 17     APPLHEAPSZ
0xB2BB9504 AppCtl   apph       1     0          7452        1048576     8864        65536       1048576     65536       Phy 17     APPLHEAPSZ
0xB2BB9450 AppCtl   apph       1     0          7452        1048576     7452        65536       1048576     65536       Phy 17     APPLHEAPSZ
0xB2BB92E8 AppCtl   apph       1     0          7726        1048576     18084       65536       1048576     65536       Phy 20     APPLHEAPSZ
0xB2BB9234 AppCtl   appshrh    20    2048       127088      20480000    144484      196608      20512768    196608      Phy 25     application shared
Posted in DB2 |

使用dblink导致的/*+ OPAQUE_TRANSFORM */

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数据库版本

--目标端
SQL> select * from v$version;

BANNER
-----------------------------------------------------------------------

Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - Production
PL/SQL Release 11.2.0.3.0 - Production
CORE    11.2.0.3.0      Production
TNS for 32-bit Windows: Version 11.2.0.3.0 - Production
NLSRTL Version 11.2.0.3.0 - Production

--源端
SQL> select * from v$version;

BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bi
PL/SQL Release 10.2.0.4.0 - Production
CORE    10.2.0.4.0      Production
TNS for Linux: Version 10.2.0.4.0 - Production
NLSRTL Version 10.2.0.4.0 - Production

目标端创建dblink

SQL> create database link dblink_xff connect to test identified by
  2  test using 'ip/mcrm';

数据库链接已创建。

dblink查询操作测试

--目标端
SQL> select count(*) from t_xifenfei@dblink_xff;

  COUNT(*)
----------
     50645

--源端
SQL> select sql_text from v$sql where lower(sql_text) like '%t_xifenfei%' 
and sql_text not like '%lower(%' and sql_text not like '%OPT_DYN_SAMP%';

SQL_TEXT
-------------------------------------------------------------------
SELECT COUNT(*) FROM "T_XIFENFEI" "A1"
SELECT /*+ FULL(P) +*/ * FROM "T_XIFENFEI" P

dblink创建空表测试

--目标端
SQL> create table  chf.t_xifenfei as select * from t_xifenfei@dblink_xff where 1=0;

表已创建。

--源端
SQL> select sql_text from v$sql where lower(sql_text) like '%t_xifenfei%' 
and sql_text not like '%lower(%' and sql_text not like '%OPT_DYN_SAMP%';

SQL_TEXT
----------------------------------------------------------------------------
SELECT /*+ FULL(P) +*/ * FROM "T_XIFENFEI" P

dblink创建表插入数据

--目标端
SQL> create table  chf.t_xifenfei_new as select * from t_xifenfei@dblink_xff;

表已创建。

--源端
SQL> select sql_text from v$sql where lower(sql_text) like '%t_xifenfei%' 
and sql_text not like '%lower(%' and sql_text not like '%OPT_DYN_SAMP%';

SQL_TEXT
--------------------------------------------------------------------------------

SELECT /*+ FULL(P) +*/ * FROM "T_XIFENFEI" P
SELECT "OWNER","OBJECT_NAME","SUBOBJECT_NAME","OBJECT_ID","DATA_OBJECT_ID","OBJE

CT_TYPE","CREATED","LAST_DDL_TIME","TIMESTAMP","STATUS","TEMPORARY","GENERATED",

"SECONDARY" FROM "T_XIFENFEI" "T_XIFENFEI"

dblink insert select插入数据测试

--目标端
SQL> insert into chf.t_xifenfei
  2  select * from t_xifenfei@dblink_xff;

已创建 50645 行。

--源端
SQL> select sql_text from v$sql where lower(sql_text) like '%t_xifenfei%' 
and sql_text not like '%lower(%' and sql_text not like '%OPT_DYN_SAMP%';

SQL_TEXT
--------------------------------------------------------------------------------
SELECT /*+ FULL(P) +*/ * FROM "T_XIFENFEI" P
SELECT /*+ OPAQUE_TRANSFORM */ "OWNER","OBJECT_NAME","SUBOBJECT_NAME","OBJECT_ID

","DATA_OBJECT_ID","OBJECT_TYPE","CREATED","LAST_DDL_TIME","TIMESTAMP","STATUS",

"TEMPORARY","GENERATED","SECONDARY" FROM "T_XIFENFEI" "T_XIFENFEI"

除掉OPAQUE_TRANSFORM 提示

--目标端
SQL> alter session set events '22825 trace name context forever, level 1' ;

会话已更改。

SQL> insert into chf.t_xifenfei
  2  select * from t_xifenfei@dblink_xff;

已创建 50645 行。

--源端
SQL> select sql_text from v$sql where lower(sql_text) like '%t_xifenfei%' and sq
l_text not like '%lower(%' and sql_text not like '%OPT_DYN_SAMP%';

SQL_TEXT
--------------------------------------------------------------------------------

SELECT /*+ FULL(P) +*/ * FROM "T_XIFENFEI" P
SELECT "OWNER","OBJECT_NAME","SUBOBJECT_NAME","OBJECT_ID","DATA_OBJECT_ID","OBJE

CT_TYPE","CREATED","LAST_DDL_TIME","TIMESTAMP","STATUS","TEMPORARY","GENERATED",

"SECONDARY" FROM "T_XIFENFEI" "T_XIFENFEI"

通过dblink的相关实验可以得出,在 insert-as-remote-select的时候,源端库上会出现/*+ OPAQUE_TRANSFORM */的hint提示.该hint的作用是:给出源端目标端要求的数据类型的明确信息(The OPAQUE_TRANSFORM hint is to help with the transformation of datatype when certain type of operations are done within the database).屏蔽盖hint的方法是设置event:22825 trace name context forever, level 1(官方文档还提供了另外两种hint的方式屏蔽这个,但是我测试均未成功)

ksh翻上/下条和自动补全功能

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AIX默认安装ksh，对于习惯了bash的人来说,不能tab自动补全,不能翻上/下,感觉使用起来很不方便,在ksh中不能直接实现这些功能,可以使用另外的方法来完成
一.安装bash程序,使用起来就和bash一样

二.ksh中通过其他方法完成
翻上/下条功能
1、在主目录中 vi .profile
2、添加一行：export EDITOR=vi
3、保存.profile，重新登陆;或者source ~/.profile
现在如果要使用翻上/下条功能,只需要按下esc键,然后使用j/k翻上/下即可;如果要退回到输入功能,直接输入i,然后输入即可.其实所有操作就是和vi中的操作一样.

自动补全功能
使用esc+\

Posted in AIX |