DB2表空间与缓冲池 博客分类： ibm重要生活 db2IBMDB2

原则：
1、中间表和目标事实表的空间大小设置依据于源始表的空间设置。（计算出最近一年的数据量）
2、中间表和目标事实表的数据量规划为5年的数据量。
3、根据以前需求文档会数据量每年递增加20%

/*
现在应用的默认的IBMDEFAULTGROUP
db2 create database partition group pg01 on dbpartitionnum(0 to 1)
　　db2 list database partition groups
*/



--建立缓冲池
CREATE BUFFERPOOL "BP32K"  SIZE 81920 PAGESIZE 32768;


--建立索引空间
CREATE REGULAR TABLESPACE "TBS_IDX_32K" IN DATABASE PARTITION GROUP IBMDEFAULTGROUP PAGESIZE 32k MANAGED BY DATABASE
USING (file 'd:\rep\vgidx01\rTBS_IDX_32K' 64000)  --原始是64000，根据以前需求文档会增加20%
EXTENTSIZE 32
PREFETCHSIZE 192
BUFFERPOOL BP32K
OVERHEAD 12.670000
TRANSFERRATE 0.180000
FILE SYSTEM CACHING 
DROPPED TABLE RECOVERY ON;

--注意：表空间的page size和所指定的buffer pool的page size大小不一样，也会报错



--建立表空间
CREATE REGULAR TABLESPACE "TBS_DATA03" IN DATABASE PARTITION GROUP IBMDEFAULTGROUP PAGESIZE 32k MANAGED BY DATABASE
USING (file 'd:\vgdata01\rTBS_DATA03' 19200) --原始是19200，根据以前需求文档会增加20%
EXTENTSIZE 32
PREFETCHSIZE 192
BUFFERPOOL BP32K
OVERHEAD 12.670000
TRANSFERRATE 0.180000
FILE SYSTEM CACHING 
DROPPED TABLE RECOVERY ON;



--建立表，将它建在表空间上，索引在索引空间上
CREATE TABLE "DB2ADMIN"."UD8_INCEPT_FILE"  (
  "S_CREDENCECODE" CHAR(6) NOT NULL ,
  "S_BANKCODE" CHAR(8) NOT NULL
)  
IN "TBS_DATA03" INDEX IN "TBS_IDX_32K" ;


SELECT * FROM SYSCAT.BUFFERPOOLS  --缓冲池属性



LIST TABLESPACES  --列出表空间



更改表所属空间：


#QSCOMMAND EXPORT TO '%DATA_PATH%\DB2INST1.M_DIM_BANK.358.1\M_DIM_BANK.ixf'
  OF IXF
  SELECT * FROM "DB2INST1"."M_DIM_BANK";

#SYNC 10;

DROP TABLE "DB2INST1"."M_DIM_BANK";

#SYNC 20;

CREATE TABLE "DB2INST1"."M_DIM_BANK"
("ibankid"    BIGINT,
  "SBANKNAME"  VARCHAR(200),
  "SBANKTYPE"  VARCHAR(100)
)
  DATA CAPTURE NONE
IN "SYSTOOLSPACE"
INDEX IN "SYSCATSPACE";

#SYNC 30;

ALTER TABLE "DB2INST1"."M_DIM_BANK"
  LOCKSIZE ROW
  APPEND OFF
  NOT VOLATILE
  LOG INDEX BUILD NULL;

#SYNC 40;

#QSCOMMAND IMPORT FROM '%DATA_PATH%\DB2INST1.M_DIM_BANK.358.1\M_DIM_BANK.ixf'
  OF IXF
  MODIFIED BY COMPOUND=5
              NOCHECKLENGTHS
  COMMITCOUNT 1000
--RESTARTCOUNT xxx
  INSERT
  INTO "DB2INST1"."M_DIM_BANK";

#SYNC 50;

RUNSTATS ON TABLE "DB2INST1"."M_DIM_BANK"
  AND INDEXES ALL
  SHRLEVEL REFERENCE;

#SYNC 60;






http://www.ibm.com/developerworks/cn/data/library/techarticles/0212wieser/0212wieser.html