Question

backup database

Asked by: taaz

It is recomended to perform backup before you start doing  any critical task on the database specially if it is  a production database.
Can anyone tell me how to run this backup from the command line promt?

just  
backup databse (if it is already connected to the target database)

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Asked On
2009-04-14 at 09:43:01ID24321231
Tags

Oracle on windows

Topics

Oracle Database

,

Oracle 9.x

Participating Experts
3
Points
500
Comments
5

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Answers

 

by: mrjoltcolaPosted on 2009-04-14 at 10:02:05ID: 24140284

Using RMAN, without any previous setup of a catalog:

Perform a hot (inconsistent) backup.

rman target / nocatalog

RMAN> backup database include current controlfile;
RMAN> SQL "alter system archive log current";


To perform a cold / consistent backup, shutdown the database before backing up:

RMAN> shutdown immediate
RMAN> startup mount
RMAN> backup database include current controlfile;
RMAN> alter database open;

 

by: schwertnerPosted on 2009-04-14 at 11:43:37ID: 24141210

For this particular task you can do a full export of the database

Parallel Full Export and Import:
Assuming you have created DIR1, DIR2 directory objects and you want each file be 2 GB in size.
$ expdp
FULL=y
PARALLEL=2
DUMPFILE=DIR1:exp1%U.dmp, DIR2:exp2%U.dmp
FILESIZE=2G
The %u implies that multiple files may be generated and start at 01 with a two-digital number.


But the best way is to shutdown the database and do a full cold backup:

http://www.experts-exchange.com/Database/Oracle/Q_24086267.html

 

by: taazPosted on 2009-04-14 at 12:17:51ID: 24141514

do i need to perform backup before i change a users password?
thanks

 

by: mrjoltcolaPosted on 2009-04-14 at 13:21:10ID: 24142135

No, you should simply perform backup according to the schedule of your recovery plan.

 

by: my_dbaPosted on 2009-04-15 at 08:24:19ID: 24149093

Before changing the password I do not think any need to take a backup. Any time you can set the password again.

20120131-EE-VQP-002

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