Oracle学习系列笔记数据库登陆、表空间管理

  1 //把下面显示文本保存到TablespaceStudy.txt文件中
  2 
  3 SQL> spool 'F:\app\Administrator\oradata\TablespaceStudy.txt';
  4 
  5 //创建临时表空间  
  6 
  7 SQL> create temporary tablespace user_temp  
  8 
  9 1 tempfile 'F:\app\Administrator\oradata\user_temp.dbf' 
 10 
 11 2 size 50m  
 12 
 13 3 autoextend on  
 14 
 15 4 next 50m maxsize 20480m  
 16 
 17 5 extent management local;  
 18 
 19 //创建数据表空间  
 20 
 21 SQL> create tablespace user_data  
 22 
 23 2 logging  
 24 
 25 3 datafile 'F:\app\Administrator\oradata\user_data.dbf' 
 26 
 27 4 size 50m  
 28 
 29 5 autoextend on  
 30 
 31 6 next 50m maxsize 20480m  
 32 
 33 7 extent management local;  
 34 
 35  
 36 
 37 //创建用户并指定表空间  
 38 
 39 SQL> create user username identified by password  
 40 
 41 2 default tablespace user_data  
 42 
 43 3 temporary tablespace user_temp;  
 44 
 45  
 46 
 47 //给用户授予权限  
 48 
 49 
 50 SQL> grant connect,resource to username;  
 51 
 52  
 53 SQL> connect system /as sysdba;
 54 已连接。
 55 SQL> select tablespace_name,file_id,file_name,round(bytes/(1024*1024),0) total_sapce from  dba_data_files order by tablespace_name;
 56 
 57 TABLESPACE    FILE_ID FILE_NAME                      TOTAL_SAPCE
 58 ---------- ---------- ------------------------------ -----------
 59 EXAMPLE    ########## F:\APP\ADMINISTRATOR\ORADATA\O  ##########
 60                       RCL\EXAMPLE01.DBF
 61 
 62 SYSAUX     ########## F:\APP\ADMINISTRATOR\ORADATA\O  ##########
 63                       RCL\SYSAUX01.DBF
 64 
 65 SYSTEM     ########## F:\APP\ADMINISTRATOR\ORADATA\O  ##########
 66                       RCL\SYSTEM01.DBF
 67 
 68 UNDOTBS1   ########## F:\APP\ADMINISTRATOR\ORADATA\O  ##########
 69                       RCL\UNDOTBS01.DBF
 70 
 71 USERS      ########## F:\APP\ADMINISTRATOR\ORADATA\O  ##########
 72                       RCL\USERS01.DBF
 73 
 74 USER_DATA  ########## F:\APP\ADMINISTRATOR\ORADATA\U  ##########
 75                       SER_DATA.DBF
 76 
 77  
 78 
 79 SQL> alter tablespace user_data
 80   2  add datafile 'F:\app\Administrator\oradata\user_data2.dbf'
 81   3  size 10m
 82   4  autoextend on
 83   5  maxsize 100m
 84   6  ;
 85 
 86 表空间已更改。
 87 
 88 
 89 SQL> select   file_name,file_id,tablespace_name   from   dba_data_files;
 90 
 91 FILE_NAME                         FILE_ID TABLESPACE
 92 ------------------------------ ---------- ----------
 93 F:\APP\ADMINISTRATOR\ORADATA\O ########## USERS
 94 RCL\USERS01.DBF
 95 
 96 F:\APP\ADMINISTRATOR\ORADATA\O ########## UNDOTBS1
 97 RCL\UNDOTBS01.DBF
 98 
 99 F:\APP\ADMINISTRATOR\ORADATA\O ########## SYSAUX
100 RCL\SYSAUX01.DBF
101 
102 F:\APP\ADMINISTRATOR\ORADATA\O ########## SYSTEM
103 RCL\SYSTEM01.DBF
104 
105 F:\APP\ADMINISTRATOR\ORADATA\O ########## EXAMPLE
106 RCL\EXAMPLE01.DBF
107 
108 F:\APP\ADMINISTRATOR\ORADATA\U ########## USER_DATA
109 SER_DATA.DBF
110 
111 F:\APP\ADMINISTRATOR\ORADATA\U ########## USER_DATA
112 SER_DATA2.DBF
113 
114 
115 已选择7行。
116 
117 SQL> select   file_name,file_id,tablespace_name   from   dba_data_files where tablespace_name='USER_DATA';
118 
119 FILE_NAME                         FILE_ID TABLESPACE
120 ------------------------------ ---------- ----------
121 F:\APP\ADMINISTRATOR\ORADATA\U ########## USER_DATA
122 SER_DATA.DBF
123 
124 F:\APP\ADMINISTRATOR\ORADATA\U ########## USER_DATA
125 SER_DATA2.DBF
126 
127 删除表空间数据文件
128 SQL> alter tablespace user_data
129   2  drop datafile 'F:\app\Administrator\oradata\USER_DATA2.DBF';
130 
131 表空间已更改。
132 
133 SQL> select   file_name,file_id,tablespace_name   from   dba_data_files where tablespace_name='USER_DATA';
134 
135 FILE_NAME                         FILE_ID TABLESPACE
136 ------------------------------ ---------- ----------
137 F:\APP\ADMINISTRATOR\ORADATA\U ########## USER_DATA
138 SER_DATA.DBF
139 
140 
141 SQL> connect username/password;
142 已连接。
143 SQL> create table Customer(ID int, Name varchar(30)) tablespace user_data;
144 成功创建表
145 
146 查看当前用户下的表
147 SQL> select *  from tab;
148 TNAME                          TABTYPE CLUSTERID
149 ------------------------------ ------- ---------
150 Customer                      TABLE
151 
152 SQL> desc customer;
153  名称       类型
154   ID       UMBER(38)
155   NAME     Varchar2
156 
157 --切换到system账户
158 SQL> connect system /as sysdba;
159 
160 SQL> select * from v$instance;
161 
162 INSTANCE_NUMBER INSTANCE_NAME    HOST_NAME       VERSION      STARTUP_TIME   STATUS   
163 
164 1                orcl            WWW-81A02E68C5B 11.1.0.7.0   04-3月 -11     OPEN      
165 
166 ------------查看表空间信息
167 
168 SQL>  select t.tablespace_name, round(sum(bytes/(1024*1024)),0) ts_size
169   2    from dba_tablespaces t, dba_data_files d
170   3    where t.tablespace_name = d.tablespace_name
171   4    group by t.tablespace_name;
172 
173 TABLESPACE TS_SIZE
174 ---------- -------
175 UNDOTBS1        75
176 SYSAUX         609
177 USERS            5
178 SYSTEM         720
179 EXAMPLE        100
180 USER_DATA       50
181 
182 已选择6行。
183 
184 SQL> grant select on dba_tablespaces to username;
185 
186 授权成功。
187 
188 SQL> select   a.tablespace_name,a.bytes/1024/1024 "Sum MB",(a.bytes-b.bytes)/1024/1024   "used MB",
189   2  b.bytes/1024/1024 "free MB",round(((a.bytes-b.bytes)/a.bytes)*100,2) "percent_used" from
190   3  (select tablespace_name,sum(bytes) bytes from dba_data_files group by tablespace_name)   a,
191   4  (select tablespace_name,sum(bytes) bytes,max(bytes) largest from dba_free_space group by tablespace_name)   b
192   5  where   a.tablespace_name=b.tablespace_name
193   6  order   by   ((a.bytes-b.bytes)/a.bytes)   desc
194   7  ;
195 
196 TABLESPACE Sum MB used MB free MB percent_used
197 ---------- ------ ------- ------- ------------
198 SYSTEM        720     714       6        99.17
199 SYSAUX      608.5     578    30.5        94.99
200 USERS           5   4.063   .9375        81.25
201 EXAMPLE       100   78.63   21.38        78.63
202 UNDOTBS1       75   18.06   56.94        24.08
203 USER_DATA      50   1.188   48.81         2.38
204 
205 SQL> spool off;