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what is Copy-Only Backup?


what is Copy-Only Backup?

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pankushmehta
pankushmehta
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eng_mgomaa (8/11/2010)
Copy-only backups are new to SQL Server 2005. They allow a backup of any type to be
taken without affecting any other backups. Normally, a database backup is recorded in the
database itself and is identified as part of a chain that can be used for restore. For
example, if a full database backup is taken, any subsequent differential database backups
use this full database backup as their base. A restore process utilizing the differential database
backups would have a reference to the full database backup, and that backup would
have to be available.
Copy-only backups do not affect the restore chain. They are useful in situations in which
you simply want to get a copy of the database for testing purposes or things of this
nature. Copy-only backups are not supported via SQL Server Management Studio (SSMS)
and must be performed via the Transact-SQL (T-SQL) BACKUP command.


you can only take a full or a log backup with copy_only. Differential backup will ignore the copy_only.
balaji.ganga
balaji.ganga
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Hi,
when you take copy only backup. The Log Sequence number doesn't change it. and
i think a copy only backup can take upto 4


Regards
Balaji.G
karthik_bv2
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Thank you Rookie. That certainly helped me understand why the Copy-only backups are used. In fact the description given in MSDN was not clear to know why the Copy-only backups are used.:-)
prathibha_aviator
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eng_mgomaa (8/11/2010)
Copy-only backups are not supported via SQL Server Management Studio (SSMS)
and must be performed via the Transact-SQL (T-SQL) BACKUP command.


I dont think so.. I have a check box with copy only in SSMS here.. Its 2008 though. I donno what version u r using

--Pra:-):-)--------------------------------------------------------------------------------
GilaMonster
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Please note: 3 year old thread.

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Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

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