ORACLE 测试数据文件丢失 与 恢复

----------测试表空间

create tablespace sms_test

logging

datafile '+RECOVERYDEST/orcdb/datafile/sms_test.dbf'

size 32m

autoextend on

next 32m maxsize 100M

extent management local;

--------------------查看数据文件

select file#,name,status,enabled from v$datafile;

-------创建测试表

create table testdatefile(name varchar2(32))

tablespace sms_test

pctfree 10

initrans 1

maxtrans 255

storage

(

initial 64K

minextents 1

maxextents unlimited

);

----------插入数据

select * from testdatefile;

-----

insert into testdatefile(name)values('test');

------置于离线

alter database datafile '+RECOVERYDEST/orcdb/datafile/sms_test.dbf' offline drop;

-----查询文件状态

select file#,name,status,enabled from v$datafile;

-------恢复数据文件

recover datafile '+RECOVERYDEST/orcdb/datafile/sms_test.dbf'

-----设置在线

alter database datafile '+RECOVERYDEST/orcdb/datafile/sms_test.dbf' online;

------数据文件丢失 创建同名称新文件

alter database create datafile '+RECOVERYDEST/orcdb/datafile/sms_test.dbf' as '+RECOVERYDEST/orcdb/datafile/sms_test.dbf';

-----查询文件状态

select file#,name,status,enabled from v$datafile;

-------恢复数据文件

recover datafile '+RECOVERYDEST/orcdb/datafile/sms_test.dbf'

-----设置在线

alter database datafile '+RECOVERYDEST/orcdb/datafile/sms_test.dbf' online;

经过上述步骤，数据正常恢复