db2&unix使用总结（六）

1. db2look 导出ddl的一些用法：

db2look -d zjbi2-z 用户名 -e -o bi_bo.ddl -i bi -w pwd

db2look -d sample -e -o sample.ddl -i lenovo -w cuinan -z lenovo

db2look -d zjolap -z BI -e -i biweb -w pwd -t LIFECYCLE_INVALID_LIST_201102

2. 编目数据库：

db2 catalogtcpip node node1 remote server_ip server server_port

db2 catalog dbttest as test1 at node1

3. 删除表分区：

alter table IDX_2G_USER_MOBILE_flag_D_201104 detachpartition part6 into table IDX_2G_USER_MOBILE_D_201104_part6;

drop table IDX_2G_USER_MOBILE_D_201104_part6;

4. Runstats,reorg,reorgchk 语法

db2 "RUNSTATS ON TABLE bi.dwd_res_terminal_201105 withdistribution on key columns and index all ALLOW WRITE ACCESS TABLESAMPLESYSTEM(10)"

REORG TABLE BI.hahahaha ALLOW READ ACCESS;

db2 reorgchk update statistics on tablebi.IDX_2G_DETAIL_DIM_BARAD_ID_tem

5. 强制表走索引扫描：

alter table table_name volatile cardinality

6. 几个常用视图及表：

查看数据库锁：select * from SYSIBMADM.LOCKWAITS

查看超时语句：select * from SYSIBMADM.LONG_RUNNING_SQL

查看节点日志使用：select * from sysibmadm.log_utilization order by dbpartitionnum

查看数据库配置：SELECT * FROM SYSIBMADM.DBCFG

7. 查找指定目录下指定文件包含某些文字内容的例子：

find . -name "*.tcl" |xargs grep"DBTruncatePartitionTable" |cut -d ":" -f 1 |grep ^./ |uniq|cut -d "/" -f 2 > haha.log

8. 查看表空间数据占存储大小：

SELECT TBSP_ID,SUM(DATA_OBJECT_PAGES)*32/float(1024*1024)

FROMSYSIBMADM.SNAPTAB

WHERETBSP_ID in (6,7,8,9,10) and TABNAME like'%_201011'

GROUP BY TBSP_ID

9. 查看某分区最早运行进程：

db2terminate;

ExportDB2NODE=1

db2connect to zjbi2

db2 get snapshot for database on zjbi2|grep oldest

10. 找出需要做runstates表的语句：

SELECT'db2 "RUNSTATS ON TABLE bi.'|| c.TABNAME ||' with distribution on key columns and index all ALLOW WRITE ACCESSTABLESAMPLE SYSTEM(20)" 'FROM(select B.TBSPACE,T.TABNAME,SUM(T.DATA_OBJECT_PAGES)*32.0/1024.0/1024.0 ASSIZEGB

Fromtable(snap_get_tab_V91('zjbi2')) AS T ,SYSCAT.TABLESPACES B

whereT.tabschema='BI' ANDT.TBSP_ID=B.TBSPACEID

GROUP BYB.TBSPACE,T.TABNAME) A,SYSCAT.TABLES C

WHEREC.TABNAME=A.TABNAME(+) AND C.TABNAME LIKE '%201012' AND A.TABNAME IS NULL

and c.tabschema='BI'

11. 修改密码：db2 connect to DB_Name user UserName using OldPassword newNewPassword confirm NewPassword