>note postgres' WAL archive is by block, not by transaction.
My understanding is that only the first time a block is updated after a
checkpoint,
is the entire block is written to the WAL logs. And for that
full_page_writes has to be set to ON.
The only other time PG writes entire block to
On 3/22/2017 10:34 AM, Rakesh Kumar wrote:
When the PITR is far apart from the time of base backup (far apart as in, let us
say 4 to 5 days), the first approach beats the second approach hands down. This
coming from experience. Reason is simple. In the second approach every
transaction
(from
>> Yes John I do know about using WAL archive. IMO that will not be as fast as
>> restoring using the incremental backup.
>That's an opinion, have you tried measuring? Because normally I've found that
>1.- Incremental backups are slow and impose a greater runtime penalty
>on the system than
Rakesh Kumar schrieb am 22.03.2017 um 01:27:
> PG does not have a concept of incremental backup.
Postgres doesn't, but external tools can.
e.g. Barman can do incremental backups:
https://blog.2ndquadrant.com/incremental-backup-barman-1-4-0/
--
Sent via pgsql-general mailing list
Greetings,
* rakeshkumar464 (rakeshkumar...@outlook.com) wrote:
> >The short answer is 'no'. There are complications around this,
> >particularly at the edges and because files can be written and rewritten
> >as you're reading them.
> >Basically, no file with a timestamp after the
>
Greetings,
* rakeshkumar464 (rakeshkumar...@outlook.com) wrote:
> If first choice is lot faster in Oracle,DB2, I have reasons to believe that
> the same should be true for PG also. But as someone explained, the PG
> technology can not support this.
This statement isn't correct. There are, in
On Wed, Mar 22, 2017 at 01:40:49AM -0700, rakeshkumar464 wrote:
> upto Thu afternoon, which one do you think will be faster :-
All in all, perhaps it is more a question of
which one *came out* to be faster
on your hardware
with your load
with your data
On Tue, Mar 21, 2017 at 08:43:00PM -0400, Stephen Frost wrote:
> Do not try to implement an incremental backup solution using
> simple/naive tools like rsync with timestamp-based incrementals. It is
> not safe.
... as long as the server is *running*.
So, "stop" the server when using $RSYNC for
On Wed, Mar 22, 2017 at 9:40 AM, rakeshkumar464
wrote:
> basebackup + WAL archive lets you do just exactly this.
.
> Yes John I do know about using WAL archive. IMO that will not be as fast as
> restoring using the incremental backup.
That's an opinion, have you
Greetings,
>The short answer is 'no'. There are complications around this,
>particularly at the edges and because files can be written and rewritten
>as you're reading them.
>Basically, no file with a timestamp after the
>checkpoint before the backup can be omitted from an incremental backup.
basebackup + WAL archive lets you do just exactly this. you can
restore to any transaction between when that basebackup was taken, and
the latest entry in the WAL archive, its referred in the documentation
as PITR, Point in Time Recovery.
Yes John I do know about using WAL archive. IMO
On Wed, Mar 22, 2017 at 3:27 AM, Rakesh Kumar
wrote:
> PG does not have a concept of incremental backup. The way it works in
> Oracle and other RDBMS is that incremental backup only backups up changed
> blocks since the last full backup. So if only 10% of blocks
John,
* John R Pierce (pie...@hogranch.com) wrote:
> On 3/21/2017 5:27 PM, Rakesh Kumar wrote:
> >PG does not have a concept of incremental backup. The way it works in
> >Oracle and other RDBMS is that incremental backup only backups up changed
> >blocks since the last full backup. So if only
Greetings,
* Rakesh Kumar (rakeshkumar...@outlook.com) wrote:
> PG does not have a concept of incremental backup. The way it works in Oracle
> and other RDBMS is that incremental backup only backups up changed blocks
> since the last full backup. So if only 10% of blocks changed since the
On 3/21/2017 5:27 PM, Rakesh Kumar wrote:
PG does not have a concept of incremental backup. The way it works in Oracle
and other RDBMS is that incremental backup only backups up changed blocks since
the last full backup. So if only 10% of blocks changed since the last full
backup,
On 03/21/2017 05:27 PM, Rakesh Kumar wrote:
PG does not have a concept of incremental backup. The way it works in Oracle
and other RDBMS is that incremental backup only backups up changed blocks since
the last full backup. So if only 10% of blocks changed since the last full
backup,
PG does not have a concept of incremental backup. The way it works in Oracle
and other RDBMS is that incremental backup only backups up changed blocks since
the last full backup. So if only 10% of blocks changed since the last full
backup, incremental backup will be only for 10%.
I am
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