Luca Ferrari wrote:
On Wednesday 25 July 2007 Gregory Stark's cat, walking on the keyboard, wrote:
If you really want to understand how snapshots work at this level you could
read (slowly -- it's pretty dense stuff) through
src/backend/utils/time/tqual.c:HeapTupleSatisfiesMVCC()
Ok, I
Alvaro Herrera [EMAIL PROTECTED] writes:
Gregory Stark wrote:
Just for confirmation: the relfrozenxid of a fresh table is the xid of the
transaction that created it, isn't it?
Yes, easily enough checked:
postgres=# create table xyz (i integer);
CREATE TABLE
postgres=# select
On Wed, Jul 25, 2007 at 09:08:56PM -0700, Robby Russell wrote:
Hey all,
I'm catching up the replication options for PostgreSQL and was looking
at slony, but was wondering if I could get some pointers.
If I understand the slony documentation correctly, it doesn't allow me
to send
Robby Russell wrote:
Hey all,
I'm catching up the replication options for PostgreSQL and was looking
at slony, but was wondering if I could get some pointers.
If I understand the slony documentation correctly, it doesn't allow me
to send CREATE/ALTER TABLE/INDEX statements to the master and
We're evaluating to install a SAN (Storage Area Network) and to use it
as storage area for our Postgresql server.
Did anybody already make this? Problems, performance issues, tips?
The db server is mainly used as backend to several heavy loaded web servers.
The version of Postgresql is 8.1 and
On Tue, 2007-07-24 at 10:47 -0700, Gautam Sampathkumar wrote:
Hi,
I am in the process of porting a MySQL database to PostgreSQL.
I was wondering why PostgreSQL does not support unsigned data types?
Does this mean I'd have to essentially double the space occupied by
most database
Hello Group,
I have the following problem. We have a very old server on BSDI. We buy
a new one and install FreeBSD6.2 on it.
The PG version on the old server is:
version
-
PostgreSQL 7.4.6 on i386-pc-bsdi4.2,
Hello
We have a problem with our database. It is accessed by
Java using Hibernate. When the program has been
running for a couple of weeks some transactions are
delayed and are executed up to an hour later than then
they are first called.
If the computer is restarted it will take about a week
In response to Ranieri Mazili [EMAIL PROTECTED]:
I'm developing a BI and as database it's using postgresql 8.2, how data
are very detailed, I'm creating a view to consolidate the most important
data, but the performance of view is very poor, 1 minute to perform more
or less without where
On Tue, July 24, 2007 18:29, Joshua D. Drake wrote:
just enforce hostssl in your pg_hba.conf and nothing else. If you can
connect, you are good :)
Joshua D. Drake
Thanks, I will probably end up doing this.
What I am really looking for is an audit trail for all DBM host
connections to show
At one point I used a SAN with a 380GB postgresql database. There were
no issues.
Great benefit? We were able to keep a hot standby servers in case the
main server went down. In that case we would just shutdown the primary
server, and start the standby one.
- Ericson Smith
W3matter LLC
Denis Gasparin wrote:
We're evaluating to install a SAN (Storage Area Network) and to use it
as storage area for our Postgresql server.
Did anybody already make this? Problems, performance issues, tips?
We use a SAN with HP EVA boxes for our PostgreSQL servers and we have
not encountered any
Andrew,
Thanks for your input, comments below.
On Thu, 2007-07-26 at 13:30, Andrew Kroeger wrote:
After reading through this thread, I have an idea that should accomplish
what I believe are your 3 main goals (avoid any negative performance
impact on the user's inserts, do not lose any data
NetComrade wrote:
I apologize for cross-posting, but I need some help w/o too many
advices RTFM :). After Oracle and MySQL, this becomes the third
product that I need to learn to some degree, and I need a few links
which would provide a 'quick tutorial' especially for folks with
Oracle
I have a table with a composite PK like
CREATE TABLE t (
grp INT NOT NULL,
itm SMALLINT NOT NULL,
...,
PRIMARY KEY (grp,itm));
Normally the app takes care of providing the correct
grp,itm values when inserting records. However
(during a long period of development), I need to
In response to Bekar Bartaia [EMAIL PROTECTED]:
Hello
We have a problem with our database. It is accessed by
Java using Hibernate. When the program has been
running for a couple of weeks some transactions are
delayed and are executed up to an hour later than then
they are first called.
in addition to the good advise of materialzing the view as in create
table whatever as select * from viewwhatever once a day,
and to provide more information,
PLEASE take notice that
Good places to start with tuning:
http://www.powerpostgresql.com/PerfList
James B. Byrne wrote:
On Wed, July 25, 2007 03:13, Albe Laurenz wrote:
James B. Byrne wrote:
I would like to verify that the connection between these
two machines is indeed employing ssl for the application in question.
If you set log_min_messages and log_min_error_statement to debug5,
you
Alvaro Herrera [EMAIL PROTECTED] writes:
What's going on here is that we use Xmax not only for storing this
transaction deleted the row but also for storing this transaction
locked the row. So the row is not really deleted at all. The
IS_LOCKED bit tells you whether the row is locked or
On Wed, July 25, 2007 03:13, Albe Laurenz wrote:
James B. Byrne wrote:
I would like to verify that the connection between these
two machines is indeed employing ssl for the application in question.
If you set log_min_messages and log_min_error_statement to debug5,
you will get something
Joseph S wrote:
If you don't mind the downtime it would be simpler to upgrade to 8.2 and
then worry about Slony. If you do mind you can use slony to do the
upgrade which needs much less downtime as you switch servers.
Interesting point. It's a 24/7 environment, so downtime is unacceptable.
On Wednesday 25 July 2007 Sorin N. Ciolofan's cat, walking on the keyboard,
wrote:
Hello!
I'd like to ask you what line should be added in pg_hba.conf file in order
to grant access to a user with ip
139.100.99.98 to a db named myDB with user scott with password
mikepwd?
This should work:
Naz, in posted link to the dict_regex dictionary for tsearch2
http://lynx.sao.ru/~karpov/software/postgres_dict_regex.html
Feel free to test it and send us feedback. It's rather general, of course,
it uses regex (pcre library).
Oleg
On Thu, 26 Jul 2007, Naz Gassiep wrote:
I think you might
On 7/27/07, Tom Lane [EMAIL PROTECTED] wrote:
Bekar Bartaia [EMAIL PROTECTED] writes:
Versions running:
Linux Fedora Core 3
psql (PostgreSQL) 7.4.8
jdk1.5.0_02
The first tip I'd give you is to get onto something newer than PG 7.4.
Fedora 3 is pretty long in the tooth as well.
Although
Hello,
I'm developing a BI and as database it's using postgresql 8.2, how data
are very detailed, I'm creating a view to consolidate the most important
data, but the performance of view is very poor, 1 minute to perform more
or less without where clause.
I need to know how I can increase the
Csaba Nagy wrote:
On Tue, 2007-07-24 at 19:06, Stephan Szabo wrote:
Unfortunately I don't think this will work. Multiple backends will happily
pick up the same ctid in their selects and then try to delete the same
records.
I'm pretty sure he said that the batch processing (and the delete)
On Wednesday 25 July 2007 Gregory Stark's cat, walking on the keyboard, wrote:
If you really want to understand how snapshots work at this level you could
read (slowly -- it's pretty dense stuff) through
src/backend/utils/time/tqual.c:HeapTupleSatisfiesMVCC()
Ok, I need a little hint here:
Bekar Bartaia [EMAIL PROTECTED] writes:
If no cause can be found: Are there any other useful
tips?
Versions running:
Linux Fedora Core 3
psql (PostgreSQL) 7.4.8
jdk1.5.0_02
The first tip I'd give you is to get onto something newer than PG 7.4.
Fedora 3 is pretty long in the tooth as well.
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