1.链接:
1.1 超级管理员命令行登陆:
sqlplus / as sysdba;
1.2 普通用户登陆:
sqlplus test/[email protected]:1521/orcl
1.3 查看当前数据库有几个用户在链接:
select username,sid,serial# from v$session;
1.4 退出命令行:
exit
quit
2.表空间:
2.1 查看用户所在的表空间:
select username,default_tablespace from user_users;
2.2 查看表空间下有哪些表:
select * from dba_tables where tablespace_name='EOMS'
2.3 查看表空间大小:
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;
2.4 创建表空间并指定数据文件
CREATE TABLESPACE test_data //创建表空间test_data
LOGGING
DATAFILE 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\TEST_DATA01.DBF' //创建的数据文件
SIZE 32M //初始大小
AUTOEXTEND ON //数据文件自动扩容
NEXT 32M MAXSIZE 2048M;
2.5 创建临时表空间:
CREATE TEMPORARY TABLESPACE test_temp
TEMPFILE 'D:\oracle\product\10.2.0\oradata\orcl\test_temp01.dbf'
SIZE 32M
AUTOEXTEND ON
NEXT 32M MAXSIZE 2048M
2.6 删除表空间及数据文件:
drop tablespace test_data including contents and datafiles;
2.7 创建用户并指定表空间:
CREATE USER xiaoming IDENTIFIED BY xm123 //
创建用户
xiaoming
,设置密码为
xm123
DEFAULT TABLESPACE TEST_DATA //
指定默认表空间为
test_data
TEMPORARY TABLESPACE TEST_TEMP; //
指定临时表空间为
test_temp
2.8 查看表空间的名字和地址:
select file_name , tablespace_name from dba_data_files;
3.用户:
3.1 查询当前用户下的所有表:
select * from user_tables;
3.2 查询当前用户下的所有表和表说明:
select t.table_name,f.comments from user_tables t inner join user_tab_comments f on t.table_name = f.table_name;
3.3 查看当前用户的角色:
select * from user_role_privs;
3.4 查看当前用户的系统权限:
select * from user_sys_privs;
3.5 查看当前用户的表级权限:
select * from user_tab_privs;
4.表:
4.1 查看某表的大小:
select sum(bytes)/(1024*1024) as "size(M)" from user_segments
where segment_name=upper('&table_name');
4.2 查询当前表的所有字段:
SELECT * FROM user_tab_cols where table_name='EOMS_PROCESS_STATE';
4.3 查询当前表的所有字段和字段说明:
select * from user_col_comments where table_name='EOMS_PROCESS_STATE'
4.4 查看包含log字符的所有表:
select object_name,object_id from user_objects where instr(object_name,'ACCOUNT')>0;
4.5 查看某表的创建时间:
select * from user_objects where object_name=upper('test');
5. 索引:
5.1 查看索引个数和类别:
select index_name,index_type,table_name from user_indexes order by table_name;
5.2 查看索引被索引的字段:
select * from user_ind_columns where index_name=upper('indexname');
5.3 查看索引的大小:
select sum(bytes)/(1024*1024) as "size(M)" from user_segments where segment_name=upper('indexname');
6.序列:
6.1 创建序列:
create sequence seq_newsId
increment by 1
start with 1
maxvalue 999999999
cache 10
6.2 获取序列:
select seq_newsid.nextval from dual;
6.3 删除序列:
DROP SEQUENCE seq_newsId;
6.4 查看序列:
select * from user_sequences;
7.同义词:
7.1 创建同义词:
create public synonym table_name for user.table_name;
7.2 删除同义词:
drop public synonym table_name;
7.3 查看同义词:
select * from dba_synonyms
8.视图:
8.1 创建视图:
create or REPLACE view p_rate
AS
select r.userid,r.rateset,p.usercode,p.username,p.alipayid
from rate r,pro_user p where r.userid=p.userid;
8.2 删除视图:
drop view p_rate
8.3 查看视图:
SELECT * FROM p_rate
9.DBLINK:
9.1 创建dblink:
create public database link dblinkname connect to username identified by password
using '(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = database_ip)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME =servicename)
)
)';
9.2 删除dblink:
drop public database link dblinkname;
9.3 查看dblink:
select * from dba_db_links;
10.存储过程和函数:
10.1 查看存储过程:
select object_name,status from user_objects where object_type='PROCEDURE';
10.2 查看函数:
select * from user_objects where object_type='FUNCTION';
10.3 查看存储过程和函数的源代码:
select * from all_source where owner=user and name=upper('&plsql_name');
11.查看版本:
Select version FROM Product_component_version
Where SUBSTR(PRODUCT,1,6)='Oracle';
select * from v$version;
12.查看日志文件:
select member from v$logfile;
13.导入导出:
13.1 exp导出:
exp system/manager file=d:\iom.dmp
13.2 imp导入:
imp abc/ABC file=/home/oracle/iom.dmp log=/home/oracle/iom.log full=y ignore=y;
13.3 创建目录:
CREATE OR REPLACE DIRECTORY dump_scott AS 'F:\expbak';
13.4 授权目录:
grant read, write on directory dump_scott
to john;
13.5 查看目录:
select * from dba_directories;
13.6 删除目录:
drop directory exp_dir;
13.7 expdp导出:
expdp scott/tiger directory=dump_scott dumpfile=dumpscott.dmp logfile=exp.log schemas=scott
13.8 impdp导入:
impdp EXPDPTEST/EXPDPTEST directory=dump_dir1 dumpfile=dumpscott.dmp logfile=imp.log REMAP_SCHEMA=scott:EXPDPTEST REMAP_TABLESPACE=EXPTABS:IMPTABS