Re: [ADMIN] Postgresql Upgrade 7.4 to 8.2

2007-02-13 Thread Zach Bagnall

On 01/25/07 06:11, Joshua D. Drake wrote:

Peter Eisentraut wrote:

Radhika Sambamurti wrote:

1. How is the backup and recovery using WAL logging in 8.2



It's great!


Less filling!

Seriously though, the PITR recovery mechanism is quite mature and usable.


I would say it is a good start - and progress is clearly being made. But 
it wont be usable for most serious applications until we have 
per-database transaction logging and backup recovery. Having to run a 
new instance (or obliterate the main instance) for recovery simply isn't 
practical.


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Re: [ADMIN] Postgresql Upgrade 7.4 to 8.2

2007-02-13 Thread Tom Lane
Zach Bagnall [EMAIL PROTECTED] writes:
 Seriously though, the PITR recovery mechanism is quite mature and usable.

 I would say it is a good start - and progress is clearly being made. But 
 it wont be usable for most serious applications until we have 
 per-database transaction logging and backup recovery.

Don't hold your breath; that's not even on the agenda, much less
something that's likely to appear soon.  If you need separable recovery
then run a different postmaster instance for each database.

regards, tom lane

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Re: [ADMIN] Postgresql Upgrade 7.4 to 8.2

2007-02-13 Thread Joshua D. Drake
Tom Lane wrote:
 Zach Bagnall [EMAIL PROTECTED] writes:
 Seriously though, the PITR recovery mechanism is quite mature and usable.
 
 I would say it is a good start - and progress is clearly being made. But 
 it wont be usable for most serious applications until we have 
 per-database transaction logging and backup recovery.
 
 Don't hold your breath; that's not even on the agenda, much less
 something that's likely to appear soon.  If you need separable recovery
 then run a different postmaster instance for each database.

I would have to concur... if you need such a feature I would wonder why
you are running multiple databases within the same cluster at all.

Joshua D. Drake


 
   regards, tom lane
 


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Re: [ADMIN] Postgresql Upgrade 7.4 to 8.2

2007-02-13 Thread Zach Bagnall

On 02/14/07 16:00, Joshua D. Drake wrote:

Tom Lane wrote:

Zach Bagnall [EMAIL PROTECTED] writes:

Seriously though, the PITR recovery mechanism is quite mature and usable.
I would say it is a good start - and progress is clearly being made. But 
it wont be usable for most serious applications until we have 
per-database transaction logging and backup recovery.



Don't hold your breath; that's not even on the agenda, much less
something that's likely to appear soon.  If you need separable recovery
then run a different postmaster instance for each database.


I would have to concur... if you need such a feature I would wonder why
you are running multiple databases within the same cluster at all.


It's not exactly an exotic feature. Sybase has had it for as long as I 
can remember, as has Informix and DB2 (I'm told).


The obvious reason for not running multiple instances is that postgresql 
will know how to use the available memory most efficiently. By splitting 
them up, each postmaster must be tuned and adjusted by a stupid human.


Unless you meant using a new hardware server for each database..

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[ADMIN] Postgresql Upgrade 7.4 to 8.2

2007-01-24 Thread Radhika Sambamurti
Hi,

I am soon going to be testing postgresql upgrades from our ancient 7.4
version to the latest 8.2.
Part of the reason (apart from the obvious) is that I want to implement
WAL logging for backup and recovery.

Some general questions I have are:
1. How is the backup and recovery using WAL logging in 8.2
Currently we use Slony for replication, but have no PITR / backup in
place, which makes me very nervous.

Any insights on upgrading will also help.

Thank you,
Radhika


-- 
It is all a matter of perspective. You choose your view by choosing where
to stand.
Larry Wall
---


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Re: [ADMIN] Postgresql Upgrade 7.4 to 8.2

2007-01-24 Thread Matthias . Pitzl
 
 Any insights on upgrading will also help.
 
 Thank you,
 Radhika
 

Hello!

About upgrading you should read these links: 
http://www.postgresql.org/docs/8.2/interactive/install-upgrading.html and
http://www.postgresql.org/docs/8.2/interactive/migration.html

Greetings,
Matthias

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Re: [ADMIN] Postgresql Upgrade 7.4 to 8.2

2007-01-24 Thread Milen A. Radev
Radhika Sambamurti написа:
[...]
 Some general questions I have are:
 1. How is the backup and recovery using WAL logging in 8.2
 Currently we use Slony for replication, but have no PITR / backup in
 place, which makes me very nervous.
[...]

Also these:

http://www.postgresql.org/docs/8.2/static/continuous-archiving.html
http://www.postgresql.org/docs/8.2/static/warm-standby.html


-- 
Milen A. Radev


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Re: [ADMIN] Postgresql Upgrade 7.4 to 8.2

2007-01-24 Thread Peter Eisentraut
Radhika Sambamurti wrote:
 1. How is the backup and recovery using WAL logging in 8.2

It's great!

-- 
Peter Eisentraut
http://developer.postgresql.org/~petere/

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Re: [ADMIN] Postgresql Upgrade 7.4 to 8.2

2007-01-24 Thread Joshua D. Drake
Peter Eisentraut wrote:
 Radhika Sambamurti wrote:
 1. How is the backup and recovery using WAL logging in 8.2
 
 It's great!
 

Less filling!

Seriously though, the PITR recovery mechanism is quite mature and usable.

Sincerely,

Joshua D. Drake

-- 

  === The PostgreSQL Company: Command Prompt, Inc. ===
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