Solved

How can I backup a large db?

Posted on 2003-10-24
10
263 Views
Last Modified: 2008-02-01

I need to do a quick and dirty backup of a database 130 GB in size...

What I plan is:

use master
go
alter database BigDB
set single_user with rollback immediate

sp_detach_db 'BigDB'


copy the db files to another server....400 GB free (RAID-5)


then, on the original server:

use master
go
sp_attach_db 'BigDB','d:\Program Files\Microsoft SQL Server\MSSQL\Data\BigDB_Data.mdf'

restore database 'BigDB' with recovery


Will this work?
 I have most of the weekend to do it.
Is there minimal risk of loss to my data?
Is there a way to do this while the db is online?

Any other suggestions? (BTW, I dont have a tape drive large enough...)


0
Comment
Question by:TARJr
  • 3
  • 3
  • 2
  • +1
10 Comments
 
LVL 50

Expert Comment

by:Lowfatspread
ID: 9616844
is it all data or is some of the 130GB the transaction log?
0
 
LVL 50

Expert Comment

by:Lowfatspread
ID: 9616867
have you considered transactional replication... your going to take the network traffic hit anyway?

how are you backing this up at the moment ?
0
 
LVL 69

Expert Comment

by:ScottPletcher
ID: 9616932
Excellent point:

What are the data and log sizes respectively?

Also, note that you should *NOT* issue the RESTORE command:

restore database 'BigDB' with recovery  -- *don't* issue this

The attach will put the db back the way it was before the detach.

Finally, note that you have to copy only the data file to another drive/server; if necessary, you could attach only the data file and get a new log file created from scratch.  This could save you significant time is the log file is large.
0
 
LVL 1

Author Comment

by:TARJr
ID: 9617013

Recovery model: Simple

so we don't care about the trans log...right?

log file size shows: 1.78 GB  (oops...I don't have Auto Shrink checked..can I check it now?)


0
 
LVL 69

Expert Comment

by:ScottPletcher
ID: 9617067
Yep, don't have to worry about, but if it's that relatively small, might as well copy it also.

It will probably be worth the time to make the copy locally, then attach the original db (if you need to get running again asap), then zip the copy, then ship the zipped copy to another location.
0
Zoho SalesIQ

Hassle-free live chat software re-imagined for business growth. 2 users, always free.

 
LVL 1

Author Comment

by:TARJr
ID: 9617105

So, I can detach....copy only the .mdf file to another location...(delete the .ldf log)

then attach the original again (with recovery)...will it "look" just like it was when
I detached it?

0
 
LVL 69

Accepted Solution

by:
ScottPletcher earned 125 total points
ID: 9617123
Yes, you can attach just the data file and a new log file will be built, and the db tables, etc., will be exactly the same.

The sp_attach_db is implicitly (automatically) "with recovery".  You will not need to issue an actual RESTORE command, only the attach.
0
 
LVL 34

Expert Comment

by:arbert
ID: 9617186
Look at SQLLitespeed--cheap product.  Backed up 300gig in about 30minutes and compressed it to about 50gig....

http://www.dbassociatesit.com


Brett

0
 
LVL 1

Author Comment

by:TARJr
ID: 9750317
I looked at SQL LiteSpeed and the GUI doesn't support backup over the network...The next version may.

0
 
LVL 34

Expert Comment

by:arbert
ID: 9750386
The proc does:

EXEC xp_backup_database @database = 'hwmf_db_idea'
                      ,@filename = '\\dhwidea\c$\backup.bak'
                      ,@init = 1

0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

When you hear the word proxy, you may become apprehensive. This article will help you to understand Proxy and when it is useful. Let's talk Proxy for SQL Server. (Not in terms of Internet access.) Typically, you'll run into this type of problem w…
Load balancing is the method of dividing the total amount of work performed by one computer between two or more computers. Its aim is to get more work done in the same amount of time, ensuring that all the users get served faster.
This video shows, step by step, how to configure Oracle Heterogeneous Services via the Generic Gateway Agent in order to make a connection from an Oracle session and access a remote SQL Server database table.
Via a live example combined with referencing Books Online, show some of the information that can be extracted from the Catalog Views in SQL Server.

920 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now