Re: does pg_dump get delayed if I have a loop that does continuous insertions

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От anj patnaik
Тема Re: does pg_dump get delayed if I have a loop that does continuous insertions
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Msg-id CAEQKwSm8-5GMOG_KSpb925vDN=7R3NigXPvOBhP-MGu=m_ECXg@mail.gmail.com
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Ответ на Re: does pg_dump get delayed if I have a loop that does continuous insertions  (Adrian Klaver <adrian.klaver@aklaver.com>)
Ответы Re: does pg_dump get delayed if I have a loop that does continuous insertions
Re: does pg_dump get delayed if I have a loop that does continuous insertions
Re: does pg_dump get delayed if I have a loop that does continuous insertions
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I was trying to achieve smallest file possible so tried the xz. Right now the db size returned from SELECT pg_size_pretty(pg_database_size('postgres') is 1.4 GB and the size of the dump with xz is 2.2 GB. 

Is there a limit to the size of the database that pg_dump will run on? Will it work when db is in TBs?

Also, I want to know if anyone has found any handy cron scripts for automated backups to run on a daily/weekly basis? i found some on google, but interested to know if there are better ones.

Thanks,
ap

On Wed, Oct 28, 2015 at 12:05 AM, Adrian Klaver <adrian.klaver@aklaver.com> wrote:
On 10/27/2015 04:10 PM, anj patnaik wrote:
I am running pg_dump on a database while on another machine running a
loop to do insertions.

Does pg_dump wait for idle activity before it completes or how does it
determine when it has all the records needed for archiving?

http://www.postgresql.org/docs/9.4/interactive/app-pgdump.html

"pg_dump is a utility for backing up a PostgreSQL database. It makes consistent backups even if the database is being used concurrently. pg_dump does not block other users accessing the database (readers or writers).


I am using the compressed mode and also using xz.

 Again, why?


Thanks,
ap


--
Adrian Klaver
adrian.klaver@aklaver.com

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