oracle 备份及还原

oracle备份(exp、expdp)

--按用户导出表
expdp name/pwd@orcl schemas=space1 directory=a dumpfile=expdp.dmp 
--按表名导出表
expdp scott/tiger@orcl TABLES=emp,dept dumpfile=expdp.dmp DIRECTORY=dpdata1;
--按查询条件导出表
expdp scott/tiger@orcl directory=dpdata1 dumpfile=expdp.dmp Tables=emp query='WHERE id=1'; 
--按表空间导出表
expdp system/manager DIRECTORY=dpdata1 DUMPFILE=tablespace.dmp TABLESPACES=temp,example; 
--导整个数据库
expdp system/manager DIRECTORY=dpdata1 DUMPFILE=full.dmp FULL=y;

--正常备份
exp name/pwd@orcl file=e:\bdcdj.dmp owner=bdcdj
--正常备份单张表
exp system/manager@TEST file=d:\daochu.dmp tables=(table1,table2)

----------------------------------------------------------------------------------------------------------------------

oracle还原(imp、impdp)

--导入表
impdp sde/sde@nbdcj schemas=bdcdj directory=a dumpfile=bdcdj.dmp 
--导入表空间
impdp system/manager DIRECTORY=dpdata1 DUMPFILE=tablespace.dmp TABLESPACES=example;
--导入数据库 
impdp system/manager DIRECTORY=dump_dir DUMPFILE=full.dmp FULL=y; 
--追加数据 
impdp system/manager DIRECTORY=dpdata1 DUMPFILE=expdp.dmp SCHEMAS=system TABLE_EXISTS_ACTION
--改变表的owner 
impdp system/manager DIRECTORY=dpdata1 DUMPFILE=expdp.dmp TABLES=scott.dept REMAP_SCHEMA=scott:system;

--还原单表
imp sde/sde@pana file=e:\xx.dmp tables=表名
imp sde/sde@nbbdc file=e:\sde_T_xtsz.dmp tables=T_xtsz

--正常还原
imp sde/sde@nbbdc file=E:\nb\sde.dmp fromuser=sde touser=sde buffer=99999999 log='E:\nb\sde.log' 
-- 2 将d:\daochu.dmp中的表table1 导入
imp system/manager@TEST file=d:\daochu.dmp tables=(table1)

注意加buffer=99999999是因为所导入的数据库文件大的情况下的。为了防止数据的丢失。如果在还原时发现少表的情况下。建议将空的模板库在重新还原一下。这样就会全部还原进去。

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07-17
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