1. 統計所有節點表空間使用率
select substr(TABLESPACE_NAME,1,20) as TBSPC_NAME,bigint(TOTAL_PAGES * PAGE_SIZE)/1024/1024 as "TOTAL(MB)",
used_pages*PAGE_SIZE/1024/1024 as "USED(MB)", free_pages*PAGE_SIZE/1024/1024 as "FREE(MB)"
from table(snapshot_tbs_cfg('DB_NAME', -2)) as snapshot_tbs_cfg
2、查看表空間使用率
select substr(tbsp_name,1,20) as TABLESPACE_NAME,substr(tbsp_content_type,1,10) as TABLESPACE_TYPE,sum(tbsp_total_size_kb)/1024 as TOTAL_MB,
sum(tbsp_used_size_kb)/1024 as USED_MB,sum(tbsp_free_size_kb)/1024 as FREE_MB,tbsp_page_size AS PAGE_SIZE
from SYSIBMADM.TBSP_UTILIZATION group by tbsp_name,tbsp_content_type,tbsp_page_size
order by 1
3、通過存儲過程查看數據庫大小和容量
db2 call GET_DBSIZE_INFO (?,?,?,0)
輸出參數的值
--------------------------
參數名: SNAPSHOTTIMESTAMP
參數值: 2008-05-26-10.53.06.421000
參數名: DATABASESIZE
參數值: 1203863552
參數名: DATABASECAPACITY
參數值: 4281493504
unit=byte, byte/1024/1024=m
db2 call GET_DBSIZE_INFO (?,?,?,0)
註意:
a、從V8以上版本支持,此存儲過程看數據庫大小和容量;如果要看各表空間使用情況上面的sql方便,
b、還有DPF環境下,db2 call GET_DBSIZE_INFO (?,?,?,0)只能看dbsize大小,無法看db的容量
SYSIBM.SYSTABLESPACES
SYSIBM.SYSTBSPACEAUTH
2.db2查看表空間和增加表空間容量
Db2 connect to xxx
Db2 “LIST TABLESPACES SHOW DETAIL”
Tablespace ID = 7
Name = TSASNAA
Type = Database managed space
Contents = All permanent data. Large table space.
State = 0x0000
Detailed explanation:
Normal
Total pages = 14800
Useable pages = 14752
Used pages = 12864
Free pages = 1888
High water mark (pages) = 12864
Page size (bytes) = 8192
Extent size (pages) = 32
Prefetch size (pages) = 32
Number of containers = 1
增加表空間大小
DB2數據庫使用時,如果表空間滿了,該如何擴容呢?下文將教給您DB2數據庫表空間擴容的方法,供您參考,希望對您有所幫助。
1)直接添加壹個容器的例子:
db2 " ALTER TABLESPACE PAYROLL ADD (DEVICE '/dev/rhdisk9' 10000) "
加容器之後DB2會有壹個自動balance的過程,可能會持續幾個小時!!! 壹定要註意該選項,修改前確認該選項是否能滿足業務需求!
2)改變現有容器的大小(該方法不會觸發balance,但如果表空間建立在裸設備上,則要擴沖裸設備空間):
db2 " ALTER TABLESPACE TS1 RESIZE (FILE '/conts/cont0' 2000, DEVICE '/dev/rcont1' 2000, FILE 'cont2' 2000) "
註意這種方式就是將原有的相應容器都改成大小是2000頁
db2 "ALTER TABLESPACE TS1 RESIZE (ALL 2000)"
這種方式就是把表空間中所有的容器大小都改成2000頁
db2 " ALTER TABLESPACE TS1 EXTEND (FILE '/conts/cont0' 1000, DEVICE '/dev/rcont1' 1000, FILE 'cont2' 1000) "
這種方式就是將相應的容器都擴大1000頁,也就是增加1000頁。
db2 " ALTER TABLESPACE DATA_TS EXTEND (ALL 1000)"
這種方式就是將所有的容器都增加1000頁。
3.db2數據字典
select name from sysibm.systables where type='T' and creator='USERID' and tbspace='TS4R_DNJC' order by name;
select name from sysibm.systables where type='V' and creator='USERID' order by name;
type:數據庫表用T表示;數據庫視圖用V表示
creator:數據庫對象的創建者
select * from sysibm.syscolumns
select tabname from syscat.tables where tabschema=current schema ;
獲取當前模式下面的所有用戶表
describe table XXXX
SELECT NAME
,COLNO
,COLTYPE || '('
|| CAST(LENGTH AS CHAR(5)) || ','
|| CAST(SCALE AS CHAR(5)) || ')'
,CASE WHEN NULLS = 'N'
THEN 'NOT NULL' ELSE ' ' END
,TBNAME
WHERE TBCREATOR = 'TEST' -- < OR 'TEST'
-- AND (NAME = 'YOUR_COL_NAME' -- < COLUMN NAME \ ONLY USE ONE
AND (TBNAME = 'T_QUICK_MENU' -- < TABLE NAME /
)
ORDER BY TBNAME, COLNO
SELECT NAME FROM SYSIBM.SYSCOLUMNS