Oracle 创建表空间

1.创建表空间

导出Oracle数据的指令：exp jds/jds@192.168.99.199/orcl file=C:jds.dmp owner=jds
导入Oracle数据的指令：imp zcl/zcl@127.0.0.1:1521/orcl file=C:jds.dmp full=y

--第1步：创建临时表空间
CREATE TEMPORARY TABLESPACE User_Temp TEMPFILE 'E:OrclDataDataTempUser_Temp.dbf' SIZE 50m AUTOEXTEND ON NEXT 50m MAXSIZE 20480m EXTENT MANAGEMENT LOCAL;

--第2步：创建表空间语句(创建表空间名称：User_Data;创建位置：E:OrclDataDataSpaceUser_Data.dbf 初始大小：50m;按50M大小自动增长，最大20480M)
CREATE TABLESPACE User_Data DATAFILE 'E:OrclDataDataSpaceUser_Data.dbf'SIZE 50m AUTOEXTEND ON NEXT 50m MAXSIZE 20480m EXTENT MANAGEMENT LOCAL;

--第3步：创建表空间内的用户(创建用户名和密码 用户名：zcl 密码：zcl;默认的表空间位置：User_Data)
CREATE USER zcl IDENTIFIED BY zcl DEFAULT TABLESPACE User_Data TEMPORARY TABLESPACE User_Temp;

--第4步：给用户授予权限(赋予用户zcl权限：连接权限，修改权限，最高权限)
GRANT CONNECT,RESOURCE,DBA TO zcl;

 2.创建用户、表空间并设置权限

---单个执行语句---

--dba账户登录
sqlplus

请输入用户名：SysDba as sysdba
请输入口令：123456

--创建账号
create user zcl identified  by zcl;

--创建临时表空间
create temporary tablespace DATA_TEMP
tempfile 'D:ORACLEORADATAORCLDATA_TEMP.dbf'
size 32m
autoextend on
next 32m maxsize 2048m
extent management local;

--将临时表空间分配给用户
alter user zcl temporary tablespace zcl;

--创建表空间
create tablespace TECHRPT_DATA 
logging  
datafile 'D:ORACLEORADATAORCLTECHRPT_DATA.ora' 
size 50m  
autoextend on  
next 50m maxsize 2048m  
extent management local; 

--将表空间分配给用户
alter user zcl default tablespace zcl;

--授权
grant dba to zcl;
grant connect,resource to zcl;--提交
commit;

--退出
quit;

--删除用户
drop user zcl cascade;

--删除表空间
drop tablespace TECHRPT_DATA including contents and datafiles; 

--修改密码 
alter user system identified by system;

 

3.查询表空间信息

--1、查看表空间的名称及大小 
SELECT t.tablespace_name, round(SUM(bytes / (1024 * 1024)), 0) ts_size 
FROM dba_tablespaces t, dba_data_files d 
WHERE t.tablespace_name = d.tablespace_name 
GROUP BY t.tablespace_name; 
--2、查看表空间物理文件的名称及大小 
SELECT tablespace_name, 
file_id, 
file_name, 
round(bytes / (1024 * 1024), 0) total_space 
FROM dba_data_files 
ORDER BY tablespace_name; 
--3、查看回滚段名称及大小 
SELECT segment_name, 
tablespace_name, 
r.status, 
(initial_extent / 1024) initialextent, 
(next_extent / 1024) nextextent, 
max_extents, 
v.curext curextent 
FROM dba_rollback_segs r, v$rollstat v 
WHERE r.segment_id = v.usn(+) 
ORDER BY segment_name; 
--4、查看控制文件 
SELECT NAME FROM v$controlfile; 
--5、查看日志文件 
SELECT MEMBER FROM v$logfile; 
--6、查看表空间的使用情况 
SELECT SUM(bytes) / (1024 * 1024) AS free_space, tablespace_name 
FROM dba_free_space 
GROUP BY tablespace_name; 
SELECT a.tablespace_name, 
a.bytes total, 
b.bytes used, 
c.bytes free, 
(b.bytes * 100) / a.bytes "% USED ", 
(c.bytes * 100) / a.bytes "% FREE " 
FROM sys.sm$ts_avail a, sys.sm$ts_used b, sys.sm$ts_free c 
WHERE a.tablespace_name = b.tablespace_name 
AND a.tablespace_name = c.tablespace_name; 
--7、查看数据库库对象 
SELECT owner, object_type, status, COUNT(*) count# 
FROM all_objects 
GROUP BY owner, object_type, status; 
--8、查看数据库的版本　 
SELECT version 
FROM product_component_version 
WHERE substr(product, 1, 6) = 'Oracle'; 
--9、查看数据库的创建日期和归档方式 
SELECT created, log_mode, log_mode FROM v$database; 
--10、综合查询
--1G=1024MB 
--1M=1024KB 
--1K=1024Bytes 
--1M=11048576Bytes 
--1G=1024*11048576Bytes=11313741824Bytes 
SELECT a.tablespace_name "表空间名", 
total "表空间大小", 
free "表空间剩余大小", 
(total - free) "表空间使用大小", 
total / (1024 * 1024 * 1024) "表空间大小(G)", 
free / (1024 * 1024 * 1024) "表空间剩余大小(G)", 
(total - free) / (1024 * 1024 * 1024) "表空间使用大小(G)", 
round((total - free) / total, 4) * 100 "使用率 %" 
FROM (SELECT tablespace_name, SUM(bytes) free 
FROM dba_free_space 
GROUP BY tablespace_name) a, 
(SELECT tablespace_name, SUM(bytes) total 
FROM dba_data_files 
GROUP BY tablespace_name) b 
WHERE a.tablespace_name = b.tablespace_name 

 

4.查询用户所属表空间

select username,default_tablespace from dba_users  where username='ZCL';