Does this log backup overwrite?

The following command is run every 5 minutes:
BACKUP LOG [Skinstore] TO [Skinstore-Log-Diff] WITH INIT , NOUNLOAD , NAME = N''Skinstore Log Differential'', NOSKIP , STATS = 10, NOFORMAT , NO_TRUNCATE
I think it is overwriting the TRN file every time.Yes -- the INIT option makes it overwrite.
--
Adam Machanic
SQL Server MVP - http://sqlblog.com
Author, "Expert SQL Server 2005 Development"
http://www.apress.com/book/bookDisplay.html?bID=10220
"Jay" <nospam@.nospam.org> wrote in message
news:%23bXzE9l6HHA.3264@.TK2MSFTNGP02.phx.gbl...
> The following command is run every 5 minutes:
> BACKUP LOG [Skinstore] TO [Skinstore-Log-Diff] WITH INIT , NOUNLOAD , NAME
> = N''Skinstore Log Differential'', NOSKIP , STATS = 10, NOFORMAT ,
> NO_TRUNCATE
> I think it is overwriting the TRN file every time.
>|||Psssst! Wrong answer Hans!
I was really hoping to be told I'm a idiot and didn't RTFM right.
Thank you sir.
"Adam Machanic" <amachanic@.IHATESPAMgmail.com> wrote in message
news:BEBE0224-CE84-4872-A44C-A77F784A57EC@.microsoft.com...
> Yes -- the INIT option makes it overwrite.
> --
> Adam Machanic
> SQL Server MVP - http://sqlblog.com
> Author, "Expert SQL Server 2005 Development"
> http://www.apress.com/book/bookDisplay.html?bID=10220
>
> "Jay" <nospam@.nospam.org> wrote in message
> news:%23bXzE9l6HHA.3264@.TK2MSFTNGP02.phx.gbl...
>> The following command is run every 5 minutes:
>> BACKUP LOG [Skinstore] TO [Skinstore-Log-Diff] WITH INIT , NOUNLOAD ,
>> NAME = N''Skinstore Log Differential'', NOSKIP , STATS = 10, NOFORMAT ,
>> NO_TRUNCATE
>> I think it is overwriting the TRN file every time.
>|||You should really think about generating backups with a unique filename each
time. Appending to a single file can get pretty ugly since you can't delete
individual backups in the file. It's all or nothing.
--
Andrew J. Kelly SQL MVP
Solid Quality Mentors
"Jay" <nospam@.nospam.org> wrote in message
news:%23hG$XGm6HHA.3900@.TK2MSFTNGP02.phx.gbl...
> Psssst! Wrong answer Hans!
> I was really hoping to be told I'm a idiot and didn't RTFM right.
> Thank you sir.
> "Adam Machanic" <amachanic@.IHATESPAMgmail.com> wrote in message
> news:BEBE0224-CE84-4872-A44C-A77F784A57EC@.microsoft.com...
>> Yes -- the INIT option makes it overwrite.
>> --
>> Adam Machanic
>> SQL Server MVP - http://sqlblog.com
>> Author, "Expert SQL Server 2005 Development"
>> http://www.apress.com/book/bookDisplay.html?bID=10220
>>
>> "Jay" <nospam@.nospam.org> wrote in message
>> news:%23bXzE9l6HHA.3264@.TK2MSFTNGP02.phx.gbl...
>> The following command is run every 5 minutes:
>> BACKUP LOG [Skinstore] TO [Skinstore-Log-Diff] WITH INIT , NOUNLOAD ,
>> NAME = N''Skinstore Log Differential'', NOSKIP , STATS = 10, NOFORMAT ,
>> NO_TRUNCATE
>> I think it is overwriting the TRN file every time.
>>
>|||Actually, I've been here a month now and had initially only verified that
backups were being done. Why so little? Because, no one would ever overwrite
their log backup without having backed it up, or archived it first ... would
they?
I have since spoken to the guy that set it up (my boss) and he said he
thought that he was making a complete copy of the .ldf changes for the day
each time he wrote to the .trn. I literally had to stop myself when I heard
my tone in replying to him. Not a good idea to speak to your boss like
you're talking to an idiot.
Anyway, when drive space is available, I will be changing to my own backup
program that was based on RealSQLGuy's backup program. The only problem with
the program is that it assumes the job that puts it to tape will also be
removing old files. A situation that is not the case here.
Thanks,
Jay
"Andrew J. Kelly" <sqlmvpnooospam@.shadhawk.com> wrote in message
news:%23tB8RCn6HHA.5012@.TK2MSFTNGP02.phx.gbl...
> You should really think about generating backups with a unique filename
> each time. Appending to a single file can get pretty ugly since you can't
> delete individual backups in the file. It's all or nothing.
> --
> Andrew J. Kelly SQL MVP
> Solid Quality Mentors
>
> "Jay" <nospam@.nospam.org> wrote in message
> news:%23hG$XGm6HHA.3900@.TK2MSFTNGP02.phx.gbl...
>> Psssst! Wrong answer Hans!
>> I was really hoping to be told I'm a idiot and didn't RTFM right.
>> Thank you sir.
>> "Adam Machanic" <amachanic@.IHATESPAMgmail.com> wrote in message
>> news:BEBE0224-CE84-4872-A44C-A77F784A57EC@.microsoft.com...
>> Yes -- the INIT option makes it overwrite.
>> --
>> Adam Machanic
>> SQL Server MVP - http://sqlblog.com
>> Author, "Expert SQL Server 2005 Development"
>> http://www.apress.com/book/bookDisplay.html?bID=10220
>>
>> "Jay" <nospam@.nospam.org> wrote in message
>> news:%23bXzE9l6HHA.3264@.TK2MSFTNGP02.phx.gbl...
>> The following command is run every 5 minutes:
>> BACKUP LOG [Skinstore] TO [Skinstore-Log-Diff] WITH INIT , NOUNLOAD ,
>> NAME = N''Skinstore Log Differential'', NOSKIP , STATS = 10, NOFORMAT ,
>> NO_TRUNCATE
>> I think it is overwriting the TRN file every time.
>>
>>
>|||One possible way is to base the backups on weekday, day in month or similar. Take the easy route,
day of week. You have a Monday file, a Tuesday file etc. The first backup of the day, you do INIT,
then the rest of the backups of the day you do NONIT. You now have a tail of 6 backup files
(excluding the current day). This will cut down number of physical files (nice of you have lots of
databases and frequent log backups). However, some SQL persons aren't that familiar with several
backups on same file, so they don't understand the WITH FILE = option of the RESTORE command...
Pretty much a matter of taste. And, remember that the code you write need to be understood and
maintained by somebody... ;-).
--
Tibor Karaszi, SQL Server MVP
http://www.karaszi.com/sqlserver/default.asp
http://sqlblog.com/blogs/tibor_karaszi
"Jay" <nospam@.nospam.org> wrote in message news:ui%23tvhn6HHA.5984@.TK2MSFTNGP04.phx.gbl...
> Actually, I've been here a month now and had initially only verified that backups were being done.
> Why so little? Because, no one would ever overwrite their log backup without having backed it up,
> or archived it first ... would they?
> I have since spoken to the guy that set it up (my boss) and he said he thought that he was making
> a complete copy of the .ldf changes for the day each time he wrote to the .trn. I literally had to
> stop myself when I heard my tone in replying to him. Not a good idea to speak to your boss like
> you're talking to an idiot.
> Anyway, when drive space is available, I will be changing to my own backup program that was based
> on RealSQLGuy's backup program. The only problem with the program is that it assumes the job that
> puts it to tape will also be removing old files. A situation that is not the case here.
> Thanks,
> Jay
> "Andrew J. Kelly" <sqlmvpnooospam@.shadhawk.com> wrote in message
> news:%23tB8RCn6HHA.5012@.TK2MSFTNGP02.phx.gbl...
>> You should really think about generating backups with a unique filename each time. Appending to
>> a single file can get pretty ugly since you can't delete individual backups in the file. It's all
>> or nothing.
>> --
>> Andrew J. Kelly SQL MVP
>> Solid Quality Mentors
>>
>> "Jay" <nospam@.nospam.org> wrote in message news:%23hG$XGm6HHA.3900@.TK2MSFTNGP02.phx.gbl...
>> Psssst! Wrong answer Hans!
>> I was really hoping to be told I'm a idiot and didn't RTFM right.
>> Thank you sir.
>> "Adam Machanic" <amachanic@.IHATESPAMgmail.com> wrote in message
>> news:BEBE0224-CE84-4872-A44C-A77F784A57EC@.microsoft.com...
>> Yes -- the INIT option makes it overwrite.
>> --
>> Adam Machanic
>> SQL Server MVP - http://sqlblog.com
>> Author, "Expert SQL Server 2005 Development"
>> http://www.apress.com/book/bookDisplay.html?bID=10220
>>
>> "Jay" <nospam@.nospam.org> wrote in message news:%23bXzE9l6HHA.3264@.TK2MSFTNGP02.phx.gbl...
>> The following command is run every 5 minutes:
>> BACKUP LOG [Skinstore] TO [Skinstore-Log-Diff] WITH INIT , NOUNLOAD , NAME = N''Skinstore Log
>> Differential'', NOSKIP , STATS = 10, NOFORMAT , NO_TRUNCATE
>> I think it is overwriting the TRN file every time.
>>
>>
>