Groups > comp.databases.ms-sqlserver > #2255

Re: Make a backup only if necessary

From	Anton Shepelev <anton.txt@gmail.moc>
Newsgroups	comp.databases.ms-sqlserver
Subject	Re: Make a backup only if necessary
Date	2024-06-02 14:43 +0300
Organization	A noiseless patient Spider
Message-ID	<20240602144320.325085f5f455d2f954cced20@gmail.moc> (permalink)
References	(2 earlier) <20240528124112.80ab65ec4a358da57093539b@g{oogle}mail.com> <XnsB180CD77E5F89Yazorman@127.0.0.1> <20240529005233.d0405d2f6f826fd0e8ae0624@gmail.moc> <20240531135309.a107b0e4fc99f9659bed7d8c@g{oogle}mail.com> <XnsB18475BD5D7AYazorman@127.0.0.1>

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Erland Sommarskog:

> Since you are settling on a recovery strategy that few
> other people would consider, I'm afraid that you are quite
> much on your own.

I believe my situation is not unique, when there are many
infrequently used databases and no requirement of a
15-minute backup granularity, so that keeping the simple
recovery model and doing a backup /only/ when data has
changed safes a log of resources.

> Beside the fact that fn_dblog being undocumented,

Yet it is a function of long standing:

   <https://www.sqlskills.com/blogs/paul/?s=fn_dblog>

and statiscitally the longer something has existsed, the
longer is its expected reamaining lifespan. Back in 2010
the function's author reassured users that rumours of its
death were greately exagerrated:

   The Future -- fn_dblog() No More?
   <https://www.sqlskills.com/blogs/jonathan/an-xevent-a-day-22-of-31-the-future-fn_dblog-no-more-tracking-transaction-log-activity-in-denali/>

> you are also relying on that there are some rows left
> around in the log after a write operation.  This is
> something that could change over time.

Do you mean that in the future write operations may begin to
clear the log?

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Make a backup only if necessary Anton Shepelev <anton.txt@g{oogle}mail.com> - 2024-05-27 12:59 +0300
  Re: Make a backup only if necessary Anton Shepelev <anton.txt@g{oogle}mail.com> - 2024-05-27 13:53 +0300
  Re: Make a backup only if necessary Erland Sommarskog <esquel@sommarskog.se> - 2024-05-27 22:43 +0200
    Re: Make a backup only if necessary Anton Shepelev <anton.txt@g{oogle}mail.com> - 2024-05-28 12:41 +0300
      Re: Make a backup only if necessary Erland Sommarskog <esquel@sommarskog.se> - 2024-05-28 20:11 +0200
        Re: Make a backup only if necessary Anton Shepelev <anton.txt@gmail.moc> - 2024-05-29 00:52 +0300
          Re: Make a backup only if necessary Anton Shepelev <anton.txt@g{oogle}mail.com> - 2024-05-31 13:53 +0300
            Re: Make a backup only if necessary Erland Sommarskog <esquel@sommarskog.se> - 2024-06-01 11:34 +0200
              Re: Make a backup only if necessary Anton Shepelev <anton.txt@gmail.moc> - 2024-06-02 14:43 +0300
                Re: Make a backup only if necessary Erland Sommarskog <esquel@sommarskog.se> - 2024-06-04 20:22 +0200
                Re: Make a backup only if necessary Anton Shepelev <anton.txt@g{oogle}mail.com> - 2024-06-05 17:15 +0300
                Re: Make a backup only if necessary Anton Shepelev <anton.txt@g{oogle}mail.com> - 2024-06-05 19:37 +0300

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