Oracle 常用命令

------------------生产oracle
数据导出、导入dmp----------------

sqlplus /as sysdba --进入系统

alter user system identified by system;

createdirectory exp_shengchan as '/home/oracle/'

grantread,write on directory exp_shengchan to system;

操作系统下执行

导出：

expdp userid=system/system directory=exp_shengchan schemas=shkcdumpfile=expdp_shkc01.dmp logfile=expdp_mcrmuser_shkc01.log

导入：

impdp userid=system/system directory=exp_shengchan schemas=shkcdumpfile=expdp_shkc01.dmp logfile=expdp_mcrmuser_shkc01.log

---------------用户表空间创建--------------------------------------

如果导入的库没用 shkc用户和表空间SHKC_DATA就会出现错误，需要现在目标库里面创建用户和表空间

sqlplus / as sysdba

创建表空间

CREATE TABLESPACE SHKC_DATA

DATAFILE '/u01/app/oracle/oradata/shkorg/tbs_shkc_data_01.dbf size 800M

EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT AUTO;

创建用户：

create user shkc identified by shkc

default tablespace SHKC_DATA;

授权限：

grant create any table to shkc;

grant delete any table to shkc;

grant insert any table to shkc;

grant select any table to shkc;

grant unlimited tablespace to shkc;

grant execute any procedure to shkc;

grant update any table to shkc;

grant create any view to shkc;

grant create session to shkc;

--------------命令--------------

查看表空间：

SELECT file_name, tablespace_name FROM dba_data_files;

删除表空间：

drop tablespace SHKC_DATA including contents and datafiles

查看表空间剩余大小

select a.tablespace_name,a.bytes/1024/1024 "SumMB",(a.bytes-b.bytes)/1024/1024 "used MB",b.bytes/1024/1024"free MB",round(((a.bytes-b.bytes)/a.bytes)*100,2)"percent_used"

from

(select tablespace_name,sum(bytes) bytes from dba_data_files group bytablespace_name) a,

(select tablespace_name,sum(bytes) bytes,max(bytes) largest from dba_free_spacegroup by tablespace_name) b

where a.tablespace_name=b.tablespace_name

order by ((a.bytes-b.bytes)/a.bytes) desc