用数据库语句创建表空间导入11G数据到10G

查看表空间和数据文件的信息 select tablespace_name,file_name,ceil(bytes/1024/1024) mb from dba_data_files order by 1; 查看表空间空闲的 select s.tablespace_name 表空间, sum(s.bytes)/1024/1024 mb from dba_free_space s group by s.tablespace_na

查看表空间和数据文件的信息

select tablespace_name,file_name,ceil(bytes/1024/1024) mb
from dba_data_files order by 1;

查看表空间空闲的

select s.tablespace_name "表空间",
sum(s.bytes)/1024/1024 mb
from dba_free_space s
group by s.tablespace_name
order by 2

创建表空间

CREATE TABLESPACE ecology LOGGING DATAFILE 'C:\oa_data\ecology.dbf'
SIZE 1024M REUSE EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT AUTO;

--修改大小
Alter database datafile ‘C:\oa_data\ecology.dbf’ resize 100m;

数据文件的自动扩展
select FILE_NAME,AUTOEXTENSIBLE,MAXBLOCKS,INCREMENT_BY from dba_data_files;
改为自动扩展
alter database datafile 'C:\oa_data\ecology.dbf' autoextend on next 1m maxsize 2048m;

--删除用户
drop user ecology cascade;
-- 创建用户
create user ecology
identified by ecology
default tablespace ECOLOGY;
-- Grant/Revoke role privileges
grant connect to ecology;
grant resource to ecology;
grant dba to ecology;

--连接测试
SQL> conn ecology/ecology
---测试创建表

SQL> create table xjy_test (my_id number);

---插入数据

insert into xjy_test values (1);

delete from xjy_test;

commit;

---导入数据文件

imp ecology/ecology fromuser=ecology touser=ecology file=20140513_2.dmp log=20140513_2.log ignore=y

遇到问题11G不能导入10G

http://www.cnblogs.com/alxc/archive/2011/03/25/1995279.html

这个文章解决
--问题1
空表没有导入

select table_name from user_tables where NUM_ROWS=0;

---执行以下语句

select 'alter table '||table_name||' allocate extent;' from user_tables where num_rows=0

--把生成的结果执行
alter table FNASYSTEMSET allocate extent;
alter table BUDGETAUTOMOVE allocate extent;
alter table TAKS_MAINLINETASK allocate extent;
alter table TASK_ATTENTION allocate extent;

---参考 http://vondon.iteye.com/blog/1316223

exp 用户名/密码@数据库名 file=/home/oracle/exp.dmp log=/home/oracle/exp_smsrun.log

--EXP
exp xxxx/xxxxxx owner=xxx file=xxxx.dmp