PostgreSQL version 9.1

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3
votes
1answer
60 views

How to validate column while creating Table?

Need to validate the column while creating the tables in postgres , An example before developer create table We are in need to validate the Audit columns, Example : create table tab_1 ( a integer, b ...
3
votes
0answers
88 views

pg_dump with ssl certificates

I would like to run the pg_dump command from a remote host off my database server that only allows fully verified certificate based connections. How should I go about doing this? The man pages for 9.1 ...
1
vote
1answer
150 views

Will insert and update wait while a table is being vacuumed?

I want to vacuum a table in PostgreSQL version 9.1 which will take between 10 to 12 minutes. This needs to be done in real-time, in production use. I just want to know that if any INSERT or UPDATE ...
1
vote
1answer
61 views

Connecting to a remote Postgres 9.1 DB

I am running Postgres 9.1 on Ubuntu. I have host all all my.ip.address/32 md5 set in pg_hba.conf and listen_addresses= '*' set in postgresql.conf. Running show listen_addresses shows '*' Running sudo ...
3
votes
1answer
1k views

Postgres 9.1.6 Error index contains unexpected zero page at block 0

I have setup streaming replication on Postgres 9.1.6 running on a debian server and it's going on fine. When I try to run a query on the replica DB I get the error below: ERROR: index ...
7
votes
2answers
10k views

Disable all constraints and table checks while restoring a dump

I've obtained a dump of my PostgreSQL database with: pg_dump -U user-name -d db-name -f dumpfile which I then proceed to restore in another database with: psql X -U postgres -d db-name-b -f ...
2
votes
1answer
888 views

Trouble with installing additional modules on Postgresql 9.1 on ALT-Linux

I'm trying to create extension under postgresql 9.1 (Linux): CREATE EXTENSION pg_trgm; but got error: ERROR: could not open extension control file "/usr/share/pgsql/extension/pg_trgm.control": No ...
3
votes
1answer
459 views

Problems restoring backup from base backup + WAL with WAL-E

I'm trying to do nightly restores of the main database on a separate node. I want to do weekly full restores and nightly restores by consuming the latest WAL files. On the master I have wal_level = ...
1
vote
1answer
37 views

Moving postresql 9.1 database - live

This question has probably been asked and answered before, and if so, I would appreciate if that could be pointed out to me. I have googled this point quite a bit, but I want to be very sure as to ...
2
votes
3answers
4k views

How can I create readonly user for backups in PostgreSQL?

Is it true that it is IMPOSSIBLE to create a readonly backup user in PostgreSQL? I've been advised on an IRC channel that you simply can't have a backup only user with no ownership privileges. I ...
2
votes
1answer
125 views

Was using `set datcollate='C'` a mistake?

In a pre-production environment running django 1.6 on PostgreSQL 9.1 we had a problem with database records arriving in a different order from what the application was expecting. So we ran this ...
3
votes
2answers
177 views

Have: Postgres database files. Need: Functioning database

I am running Ubuntu 14.04 with a postgres/postgis setup and in a weak moment removed PostgreSQL 9.1 (seemingly a legacy install from 12.04 from before I upgraded to 14.04), having erroneously ...
0
votes
1answer
564 views

Postgres automatic insert time stamp with time zone (india) [closed]

Is there any way to insert timestamp with zone automatically when query is inserted ? (just like id auto increment as i don't want to pass the the parameters in sql as time its same every where if we ...
-2
votes
1answer
40 views

Replace date function call with its functionality [closed]

I have zero knowledge of postgresql somehow I have to extract data from a postgresql database I am trying to replace function call in a query with its functionality. Function: -- Function: ...
1
vote
1answer
295 views

Postgres - copy table INCLUDING CONSTRAINT doesn't include constraint

How come that statement don't copy constraints if I explicitly ask for it? CREATE TABLE backup_schema.permissions (LIKE public.permissions INCLUDING DEFAULTS INCLUDING CONSTRAINTS INCLUDING INDEXES ...
3
votes
0answers
488 views

Postgres Streaming Replication: How to re-sync data in master (with standby) after failover

I am absolutely new to postgres 9.1 replication mechanisms. I have managed to set up streaming replication between a master and standby postgres (Both have x number of records). At one point when ...
3
votes
2answers
562 views

Postgres Slow Queries - Autovacuum frequency

We've noticed the performance of our platform drop in recent weeks so I've run the following: select relname, last_vacuum, last_autovacuum, last_analyze, last_autoanalyze from pg_stat_user_tables ...
16
votes
2answers
9k views

Configuring PostgreSQL for read performance

Our system write a lots of data (kind of Big Data system). The write performance is good enough for our needs but the read performance is really too slow. The primary key (constraint) structure is ...
0
votes
2answers
822 views

What is the default size of text field in Postgres?

In the official documentation (http://www.postgresql.org/docs/9.1/static/datatype-character.html), it states text field is variable unlimited length. I wonder what is the default size of this field ...
8
votes
1answer
2k views

restoring Postgres database: pg_restore -vs- just using psql

I am dumping my Postgres database using pg_dump (in plain-text format) and then restore it simply by using psql (with the -f option). Which begs the question: am I missing anything by not using ...
6
votes
3answers
15k views

PostgreSQL: changing password for a user is not working

I installed PostgreSQL on EC2 machine and now I want to change the password of user postgres I do $ sudo -u postgres psql psql (9.1.5) Type "help" for help. postgres=# ALTER USER postgres WITH ...
1
vote
2answers
480 views

What to do with WAL files for Postgres Slave reset

So last night our PG Slave ran out of space after a lot of reconfiguring of disk space, new drives etc its now reporting the following error: FATAL: could not receive data from WAL stream: FATAL: ...
1
vote
1answer
107 views

How to cancel query as non-superuser?

I'm a non-superuser on a PostgreSQL 9.1 database, and I've just created a bad trigger function that won't stop. I can see the process, e.g.: thedb=> SELECT * FROM pg_stat_activity WHERE procpid = ...
0
votes
0answers
303 views

Couldn't setup postgresql cluster with heartbeat pgsql ra

I'm trying to install postgresql cluster with the following configuration: 2 virtual hosts with RHEL 6.6 x64: postgresql 9.1 with hot standby replication pacemaker 1.1.12 resource-agents 3.9.6 I ...
1
vote
0answers
35 views

Error on slave2 after promoting slave1 to master in cascaded streaming replication

I've a setup like MASTER -> SLAVE1 -> SLAVE2. MASTER and SLAVE2 are running on different ports on single server. SLAVE1 in on another server. For testing purpose I've powered off my first server ...
19
votes
3answers
26k views

Optimizing queries on a range of timestamps (two columns)

I use postgresql-9.1 with ubuntu 12.04. I need to select records inside a range of time: my table time_limits has two timestamp fields and one property integer. Indeed there are other info columns ...
2
votes
1answer
198 views

PostgreSQL's Query Hierarchical data poor performance

Badly need some technical assistance on this query performance issue I'm working on. Summary of the data structure is: 1 project has many homeprofiles, 1 homeprofile has many tasks, 1 task has many ...
1
vote
1answer
741 views

Recommended Postgres settings to speed up indexing on a 100GB database?

I have just installed Postgres 9.1 on a server with 32GB of RAM and 320GB solid-state disk. I will be using this server to serve both my site and my database (i.e. it's not just a database server). ...
1
vote
1answer
255 views

PostgreSQL - partial dump of large orbjects (pg_largeobject table)

Context : Our web-app is like a collaboration platform where you can share files, appointments, survey and so on. An instance of this web-app is divided in communities, each one is independent to each ...
1
vote
1answer
158 views

Can an active Postgres serverlog be truncated?

Running Postgres 9.1 on Ubuntu 14.10 LTS. I've got an application running on a machine that's going to run out of diskspace soon. However, the application is in the middle of a crucial run that has ...
1
vote
0answers
88 views

Postgres configuration, incoming connections

Hello I'm trying to figure out the best way to allow connection from certain ips/hosts to my db instance. I've got an api(s) pointing to the database and right now we do something like this ...
2
votes
1answer
4k views

How I can copy from local file to remote DB in PostgreSQL? [closed]

I am a novice in psql and need some help. How can I load a local CSV to a remote DB? I am using the following command \COPY test(user_id, product_id, value) FROM '/Users/testuser/test.tsv' ...
1
vote
1answer
260 views

Upgrade PostgreSQL 9.1 to 9.3 and server no longer starts

Technically, I didn't upgrade from 9.1 to 9.3, I built a new server with Ubuntu 14.04 and used my old 9.1 config files. PostgreSQL wouldn't start: * Starting PostgreSQL 9.3 database server * The ...
2
votes
1answer
147 views

PostgreSQL Replication delay debugging

I've got a cluster of 9.1 servers running streaming replication and using WAL-E based log shipping for when that falls behind. Generally speaking it's a pretty solid setup and does not fall behind, ...
8
votes
1answer
587 views

Adding nullable column to table costs more than 10 minutes

I have problems to add a new column on a table. I tried to run it a couple of times, but after more than 10 minutes running, I decided to cancel the query because of lock time. ALTER TABLE mytable ...
2
votes
1answer
441 views

Monitoring the Postgres query parser

As I understand it, when you send a query to Postgres like: SELECT id FROM table1 WHERE name = $1; Postgres will create a query plan. The plan will be cached for the same query in the same ...
1
vote
0answers
95 views

PostgreSQL query slow when using tsvector and ORDER BY despite having index

Running on a large database (around 1.5G) The following query takes about 70 seconds to run, SELECT x FROM DBText x WHERE x.status = 2 AND x.publishedTime < 4574590406397 AND x.service = ...
0
votes
2answers
476 views

Alter table statement waiting (for hours, on dev machine), but no locks shown

I have been trying to issue a simple: ALTER TABLE tablename ADD COLUMN id_col character varying (30) type statement on a Postgres 9.1.13 build on Debian. The application is still in private beta, so ...
1
vote
0answers
49 views

Veryfing integrity of custom order column with pure SQL

I have two tables, one stores structure (using so called parent field), the other entities that can be embeded into that structure. As certain level of structure can contain both entities and deeper ...
0
votes
1answer
273 views

how are passwords encoded in pg_shadow

How are passwords encoded in column passwd of pg_shadow? Doing a: select passwd from pg_shadow; I see values like the following: md52c92c858aa1fa12144f1dcbd4ca9c3a0 ... which, doesn't seem to ...
0
votes
1answer
63 views

benefit of using [md5] over [trust] authentication for local Unix sockets

I am following a PostgreSQL installation guide that advises (subsequent to installing the database for the first time), to setup a password for the postgres user: alter role postgres password ...
1
vote
1answer
68 views

Are PostgreSQL dynamic arrays more wasteful than plain text?

Today, someone was helping me to make a function in PostgreSQL. I was wanting the function to return in arrays of 100+ geometries per two columns instead of delimited text to make it easier to ...
4
votes
2answers
4k views

Check whether empty strings are present in character-type columns

I have an application that (as part of its logic) trims strings and replaces empty strings with NULL prior to insertion in the database. I guess one way to ensure that this is enforced would be to ...
0
votes
0answers
45 views

Join does not not use index in PostgreSQL?

I have a statement that selects from two tables news and status. It seems that the index on the column status of the table news is not used. This table has about 70.000 rows and the query costs too ...
1
vote
1answer
101 views

Different kinds of pricing PostgreSQL

I would like to hear your opinion about handling different kinds of pricing. We have a product table which looks almost like this: +----+------+-----------+-----------+ | ID | Name | price_old | ...
0
votes
1answer
268 views

PostgreSQL data directory/files portability

I have lost my PostgreSQL 9.1 installation on my Ubuntu machine by update to Ubuntu 14.10. Now I have no (reasonably easy) way to export the data from my PostgreSQL 9.1 database. Is it possible to ...
1
vote
2answers
289 views

ACID violation in Postgres 9.1?

I am using a postgres DB to implement a scheduling of jobs for a large number of computers/processes. To make the story short, every job has its id, all scheduling is implemented with three tabes: all ...
0
votes
2answers
48 views

Why Postgresql 9.2 word boundary not working!

In my postgresql version 9.1 this query is working fine: select id,name from flash_card_set where name ~* '\yACT\y' and matching: text ACT txt,ACT tests,tests ACT But in my postgresql version 9.2 ...
0
votes
1answer
6k views

How can I solve postgresql problem after deleting wal files?

I turned the archive_mode on on my postgresql configuration for testing a backup server . And since the wal files took lots of disk space, after my test I turned it off and also deleted the wal files. ...
0
votes
1answer
73 views

postgresql updating integer column taking more space than expected

I have two tables, A(a1 serial, a2 varchar(8)) and B(b2 varchar(8)); My query looks like, alter table B add column b1 integer; update B t1 set b1 = t2.a1 from (select b1, b2 from B) t2 where t1.a2 = ...