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backup up of raw devies [message #191948]

Fri, 08 September 2006 22:10

lokeshonline
Messages: 29
Registered: April 2006

Junior Member

We are using oracle 9.2 on aix5.0 Datafiles are impelmented as raw devices. How can I take hot and cold backup using manual scripts.

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Re: backup up of raw devies [message #191950 is a reply to message #191948]

Fri, 08 September 2006 23:01

Mahesh Rajendran
Messages: 10708
Registered: March 2002
Location: oracleDocoVille

Senior Member
Account Moderator

Hot backup, as usual.
Cold backup could be a little pain. You have to use dd command. I would rather depend on external backup tools to do a cold backup.

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Re: backup up of raw devies [message #191951 is a reply to message #191950]

Fri, 08 September 2006 23:53

lokeshonline
Messages: 29
Registered: April 2006

Junior Member

for hot backup what should be used in place of cp command. Is it dd. But dd is very very slow. Is there any other way or any method of making dd faster.

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Re: backup up of raw devies [message #191952 is a reply to message #191951]

Sat, 09 September 2006 00:46

Mahesh Rajendran
Messages: 10708
Registered: March 2002
Location: oracleDocoVille

Senior Member
Account Moderator

For hot backup you do not use cp or dd as-is.
Mount the database in archivelog mode.
Use RMAN preferentially or the the good old 'alter tablespace begin backup ' and use cp.
FOr more details, refer documentation
or
search this site
or
google yourself.
I would rather spend time on RMAN instead of alter tablespace begin backup.

http://www.orafaq.com/faqdbabr.htm
http://download-east.oracle.com/docs/cd/B10501_01/server.920/a96519/toc.htm

[Updated on: Sat, 09 September 2006 00:48]

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