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DUMP IN ORACLE

Posted on 2006-11-28
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Last Modified: 2011-08-18
Hi All,

I have a database in oracle HR i want to know

1.How can i take dump of this database complete.
2.How can i take dump of two tables in it.
3.How can i create another database say HR_Test from above created dump.
4.How can i restore it on HR database itself.
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Question by:imran_fast
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8 Comments
 
LVL 143

Assisted Solution

by:Guy Hengel [angelIII / a3]
Guy Hengel [angelIII / a3] earned 400 total points
ID: 18026821
1.How can i take dump of this database complete.
check out the EXP command line tool.  run exp help=yes to see most of the command line options.

2.How can i take dump of two tables in it.
among others, the flag TABLES=(table1, table2) from the above-mentionned exp tool will do that.

3.How can i create another database say HR_Test from above created dump.
you cannot create the instance/database as such, but you can load back the tables structure and table data using the IMP command line tool (import)

4.How can i restore it on HR database itself.
yes. again the command line tool imp is the one to be used, it goes hand in hand with exp
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LVL 28

Author Comment

by:imran_fast
ID: 18027166
hi angel in oracle 10 g we have a command called expdb and impdb any how one more question
have you heard of stats pack in oracle. it is similar to profiler. i need to know how to run it. if you or any body knows a site for that.
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LVL 48

Accepted Solution

by:
schwertner earned 1600 total points
ID: 18027251
Data Pump is server based - you have to create a repository for
dumps and logs:

Before using data pump create directory as user ‘system’ and grant ‘sys’ read/write privileges:

connect system/manager@o10f
create directory pump as '/u01/app/oracle/product/10.2.0/m/pump_directory';
grant read,write on directory pump to sys;

This is logical directory. Now you have to create physical directory using MidNight comander.

See all directories:
select * from dba_directories;


Now create a parameter file expsch.par:

USERID='sys/manager@o10f as sysdba'
DIRECTORY=PUMP
DUMPFILE=010f_pump.dmp
LOGFILE=expsch.log
SCHEMAS=icwuser,lscontacts,lscontainer,lsdocuments,
lsidmap,lsmedical,lssystem,lsuser
CONTENT=all

Execute the file:

%  expdp parfile=expsch.par


This was Schema level export!

Enjoy!

Importing - in the next lesson, after you complete this.
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LVL 28

Author Comment

by:imran_fast
ID: 18027364
hi schwertner,

Thanks for your feedback.

i am posting another question please have a look at that as well.
0
 
LVL 48

Expert Comment

by:schwertner
ID: 18027396
This was not my intention.

Continue to post here!
0
 
LVL 28

Author Comment

by:imran_fast
ID: 18027427
hi schwertner,
actually i found out how to do import and export but my next question is regarding performance monitoring that is irrelivant to this one.

Regards

Imran
0
 
LVL 48

Expert Comment

by:schwertner
ID: 18027461
To increase the performance you can use PARALEL option
dividing the task in different subtasks and creating many
dump files in paralel.

In the PL/SQl API package DBMS_DATAPUMP there is a table you can
query regularly to get the progres of the dump creation.

Data Pump is much more faster as clasical import/export (Parallel Option)
but the dumps are bigger - XML is used instead DDL and DML
statements that are shorter.
0
 
LVL 28

Author Comment

by:imran_fast
ID: 18027533
Hi schwertner,
Thanks for the above information Please check this
http://www.experts-exchange.com/Databases/Oracle/Q_22074579.html
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