Am 16.02.2013 09:42, schrieb Manuel Arostegui:
> 2013/2/15 Reindl Harald <h.reindl@stripped
> <mailto:h.reindl@stripped>>
>
> "our database is 400 GB, mysqldump is 600MB" was not a typo and you
> honestly believed that you can import this dump to somewhat?
>
> WTF - as admin you should be able to see if the things in front
> of you are theoretically possible before your start any action
> and 1:400 is impossible, specially because mysql-dumps are
> ALWAYS WAY LARGER then the databasses because they contain
> sql-statements and not only data
>
> That's not completely true. If you have a poor maintained database or just tables
> with lot of writes and deletes
> and you don't periodically optimize it - you can end up with lot of blank spaces in
> your tables which will use _a
> lot_ of space. If you do a "du" or whatever to measure your database size...you can
> get really confused.
> mysqldump obviously doesn't backup blank spaces and once you get rid of them, your
> database will use much less space.
ok, normally i expect there is a admin and doing his job
especially for large datasets
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