Oracle表空间查看及其创建16k表空间
b.b2/1024/1024 表空间大小M,(b.b2-a.a2)/1024/1024 已使用M,substr((b.b2-a.a2)/b.b2*100,1,5) 利用率from (select tablespace
SELECT F.TABLESPACE_NAME,
(T.TOTAL_SPACE - F.FREE_SPACE) "USED (MB)",
F.FREE_SPACE "FREE (MB)",
T.TOTAL_SPACE "TOTAL (MB)",
(ROUND((F.FREE_SPACE / T.TOTAL_SPACE) * 100)) || '% ' PER_FREE
FROM (SELECT TABLESPACE_NAME,
ROUND(SUM(BLOCKS *
(SELECT VALUE / 1024
FROM V$PARAMETER
WHERE NAME = 'db_block_size') / 1024)) FREE_SPACE
FROM DBA_FREE_SPACE
GROUP BY TABLESPACE_NAME) F,
(SELECT TABLESPACE_NAME, ROUND(SUM(BYTES / 1048576)) TOTAL_SPACE
FROM DBA_DATA_FILES
GROUP BY TABLESPACE_NAME) T
WHERE F.TABLESPACE_NAME = T.TABLESPACE_NAME
select
a.a1 表空间名称,
c.c2 类型,
c.c3 区管理,
b.b2/1024/1024 表空间大小M,
(b.b2-a.a2)/1024/1024 已使用M,
substr((b.b2-a.a2)/b.b2*100,1,5) 利用率
from
(select tablespace_name a1, sum(nvl(bytes,0)) a2 from dba_free_space group by tablespace_name) a,
(select tablespace_name b1,sum(bytes) b2 from dba_data_files group by tablespace_name) b,
(select tablespace_name c1,contents c2,extent_management c3 from dba_tablespaces) c
where a.a1=b.b1 and c.c1=b.b1;
select
b.file_name 物理文件名,
b.tablespace_name 表空间,
b.bytes/1024/1024 大小M,
(b.bytes-sum(nvl(a.bytes,0)))/1024/1024 已使用M,
substr((b.bytes-sum(nvl(a.bytes,0)))/(b.bytes)*100,1,5) 利用率
from dba_free_space a,dba_data_files b
where a.file_id=b.file_id
group by b.tablespace_name,b.file_name,b.bytes
order by b.tablespace_name
select tablespace_name, file_id,file_name,
round(bytes/(1024*1024),0) total_space from dba_data_files order by tablespace_name;
alter tablespace users add datafile '/data/house/house/users06.dbf' autoextend on next 100m maxsize unlimited
alter tablespace users add datafile '/data/house/house/users06.dbf' size 32761m
1.建立表空间
create tablespace tab_house datafile 'D:\sosdb.dbf' size 500m autoextend on next 10m maxsize unlimited;
2.建立用户
DROP USER houseproperty cascade;
CREATE USER houseproperty IDENTIFIED BY houseproperty DEFAULT TABLESPACE TAB_HOUSE TEMPORARY TABLESPACE TEMP;
GRANT connect,resource,dba to houseproperty;
3.还原数据
imp userid=system/Oracle@house fromuser=houseproperty touser=houseproperty file=E:\data_backup\2011-04-20\houseproperty.dmp tablespaces=tab_house rows=y
4.建立16block表空间
alter system set db_16k_cache_size=16k;
shutdown immediate;
startup;
create tablespace tb_16k datafile 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\HOUSE\tb_16k.DBF' size 2G autoextend on next 500m maxsize unlimited blocksize 16k;
5.某个表移动到新的表空间中：
alter table htimage move tablespace tb_16k;