Christian Kruse: Announcing repmgr 2.0RC2
Version 2.0RC2 of repmgr, Replication Manager for PostgreSQL clusters, has been released. This release introduces a new experimental feature, autofailover. With autofailover repmgr is able to...
View ArticleHans-Juergen Schoenig: max_connections – Performance impacts
It has always been commonly known that settings max_connections to an insanely high value is not too good for performance. Generations of system administrators have followed this rule. Just out of...
View ArticleRobert Haas: VACUUM FULL doesn't mean "VACUUM, but better"
There's a persistent belief among some users of PostgreSQL that VACUUM and VACUUM FULL do the same thing, but that VACUUM FULL does it better. If VACUUM is the moral equivalent of running the Dust...
View ArticleHubert 'depesz' Lubaczewski: Waiting for 9.4 – pg_basebackup: Add support for...
On 22nd of February, Peter Eisentraut committed patch: pg_basebackup: Add support for relocating tablespaces Tablespaces can be relocated in plain backup mode by specifying one or more -T...
View ArticleMichael Paquier: Postgres 9.4 feature highlight: COPY FORCE NULL
When using COPY, there is an option called FORCE_NOT_NULL allowing to enforce a string to be not null even if it is not quoted. Here is an example of how it works:=# CREATE TABLE aa (a text); CREATE...
View ArticleHubert 'depesz' Lubaczewski: Waiting for 9.4 – Allow BASE_BACKUP to be throttled
On 27th of February, Alvaro Herrera committed patch: Allow BASE_BACKUP to be throttled A new MAX_RATE option allows imposing a limit to the network transfer rate from the server side. This is useful...
View ArticleChris Travers: In Defence of Microsoft
Ok, so the next post was going to be on why PostgreSQL is really great. But this is going to be a different and unusual post for this blog.Most of my friends know that I do not revel in trying new...
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Josh Berkus: Time for a change of slogans?
So the folks at DatabaseFriends, a blog I was completely unaware of until now, posted a survey whose results surprised a lot of people. In a "favorite database" survey, PostgreSQL came in ahead of...
View ArticleHubert 'depesz' Lubaczewski: Waiting for 9.4 – Introduce logical decoding
On 3rd of March, Robert Haas committed patch: Introduce logical decoding. This feature, building on previous commits, allows the write-ahead log stream to be decoded into a series of logical changes;...
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gabrielle roth: PDXPUG: March meeting in two weeks
When: 7-9pm Thu Mar 20, 2014Where: IovationWho: Mark WongWhat: An Adventure in Data Modeling: The Entity-Attribute-Value ModelEmma, Inc. is an email marketing company that provides a Web based...
View ArticleVilis Lacis: Favorite Relational Database
Last week we conducted a small research in the form of a poll: "What is your favorite RDBMS?". The poll received more responses than anticipated – a little bit over 900 votes were submitted. The topic...
View ArticleHubert 'depesz' Lubaczewski: Waiting for 9.4 – Constructors for interval,...
On 4th of March, Alvaro Herrera committed patch: Constructors for interval, timestamp, timestamptz Author: Pavel Stěhule, editorialized somewhat by Álvaro Herrera Reviewed-by: Tomáš Vondra, Marko...
View ArticleAndrew Dunstan: New JSON standard passes the buck
There is a new JSON standard out. It contains a few interesting things. For example, here is one change noted in the changelog: Changed the definition of "JSON text" so that it can be any JSON value,...
View ArticleBaji Shaik: Want to ensure that Postgres generates core dump after server crash?
As you all know, we have to start the server with "-c" option in order to generate core dump during server crash. However if you want to know whether your server is already started to generate core...
View ArticleJosh Williams: md+lvm expansion from RAID 1 to RAID 5
VHS is on the way out, or so they tell me. A little while back I unearthed the family's collection of old tape recordings, and have been digitizing everything in an effort to preserve all the old youth...
View ArticleRobert Haas: Linux's fsync() woes are getting some attention
In two weeks, I'm headed to LSF/MM and the Linux Collaboration Summit, by invitation of some Linux kernel hackers, to discuss how the Linux kernel can better interoperate with PostgreSQL. This is good...
View ArticleHans-Juergen Schoenig: Logging – the hidden speedbrakes
When it comes to performance, people tend to forget some basic topics entirely. One of those topics is the impact of writing log files. No, in a typical OLTP workload the creation of log files is...
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Dinesh Kumar: How to get non zero min value from MIN(0, 1, 2)
Hi,Today, i have faced an interesting problem like below.I want to get MIN(UNNEST(ARRAY[0, 1, 2, ....])) as non-zero small element. In this case, it's 1.Below is my problem description.postgres=#...
View ArticleChristophe Pettus: “The Worst Day of Your Life” at Nordic PostgreSQL Day 2014
I’ll be presenting “The Worst Day of Your Life” (dealing with major PostgreSQL disasters) at Nordic PostgreSQL Day 2014. My first trip to Scandinavia!
View ArticleJosh Berkus: New Survey Up: Configuration Management
What configuration management system do you use with your PostgreSQL servers? Answer on the community survey page.
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