oracle 表空间 数据库用户管理

----------------创建临时表空间

create temporary tablespace sms_temp

tempfile 'E:\SMS_DIRECT_DATA\SMS_DIRECT_temp.dbf'

size 32m

autoextend on

next 32m maxsize 2048m

extent management local;

-----创建表空间

create tablespace sms_data

logging

datafile 'E:\SMS_DIRECT_DATA\SMS_DIRECT_DATA.dbf'

size 32m

autoextend on

next 32m maxsize 10000M

extent management local;

-----创建用户sms

create user sms identified by 123456

default tablespace sms_data

temporary tablespace sms_temp;

-----用户授权

grant connect ,resource,dba to sms ;

grant create any table,create any procedure to sms;

---导出数据

exp sms/123456@ORCL file=d:\sms.dmp owner=(sms);

----导入数据

imp sms/123456@ORCL file=d:\sms.dmp full=y ignore=y;

-----导入数据到不同用户

imp sms/123456@127.0.0.1:1521/ORCL file=d:\sms.dmp FROMUSER="sms" touser="crm";

----赋予表权限

grant select, insert, update, delete, references, alter, index on SYS_USER_TABLE to PUBLIC;

----查询表空间 大小

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 ;

-----查询物理块大小

select dbf.tablespace_name,

dbf.totalspace "总量(M)",

dbf.totalblocks as 总块数,

dfs.freespace "剩余总量(M)",

dfs.freeblocks "剩余块数",

(dfs.freespace / dbf.totalspace) * 100 "空闲比例"

from (select t.tablespace_name,

sum(t.bytes) / 1024 / 1024 totalspace,

sum(t.blocks) totalblocks

from dba_data_files t

group by t.tablespace_name) dbf,

(select tt.tablespace_name,

sum(tt.bytes) / 1024 / 1024 freespace,

sum(tt.blocks) freeblocks

from dba_free_space tt

group by tt.tablespace_name) dfs

where trim(dbf.tablespace_name) = trim(dfs.tablespace_name);

--删除用户,会删除此用户名下的所有表和视图

drop user sms cascade

--删除表空间 包括里面的物理内容

drop tablespace sms_data including contents and datafiles