3
votes
1answer
52 views

Very large btree index with few rows (openstreetmap gis data)

I tried to import a subset of open street map data to a Postgres database using the standard tool (osm2pgsql). I then tried to rebuild the indices on the table using plain sql (dropping them, then ...
0
votes
0answers
17 views

Starting up postgres on Ubuntu for the first time

I've installed postgres on ubuntu, created a node and now I'm trying to start up that node as per the instructions: postgres --coordinator -D /usr/local/pgsql/data -p 1281 But I get the following ...
-1
votes
1answer
22 views

how to stop the execution after n-th continues query execution

Is there any way to limit the continues query execution in postgres? I have a program to run the queries (10000+). But I need know is there any way to stop (break) the execution after exactly 10000 ...
0
votes
0answers
27 views

Slow search times with functions despite index?

I'm aware that this question might be under the guidelines of being closed, but I'm out of ideas at the moment on how to optemize this table any further. Given a have a few billion records with ...
1
vote
1answer
42 views

“Recover” data from running PostgreSQL instance; data directory was deleted

I accidentally removed data directory /var/lib/pgsql/9.1/data from running postgresql server. I guess I'm going to lose my data when server will be restarted. I'm wondering if postgresql has any ...
1
vote
2answers
54 views

Limiting read access in postgres to few rows

We have a requirement where we want to limit the maximum no. of rows that a select query can return when its done using a particular login. So basically we would like to append a limit clause to any ...
1
vote
1answer
61 views

INSERT from a SELECT combined with a single value

I have this query that returns several rows of item_id: select item_id from properties where name like 'body'; And I have the second one that returns 1 row of tag_id: select id from tags ...
2
votes
1answer
58 views

Why is vacuum at a critical level in PostgreSQL when I'm running autovacuum?

I just checked the state of vacuum in my PostgreSQL database and it's at a critical level: $ check_postgres --action=last_vacuum POSTGRES_LAST_VACUUM CRITICAL: DB "postgres" DB: postgres TABLE: ...
1
vote
0answers
81 views

Using prepared statements in libpqxx with variable numbers arguments

I am trying to do some streamlining of a PostgreSQL database application. I am collecting data in a real-time setting using a Windows application and libpqxx. I would like to look into using ...
1
vote
0answers
84 views

Storing changes to stored procedure and triggers in PostgreSQL

I want a mechanism where I can store/track changes in stored procedure and triggers. I want to track these logs in some table. What is the best possible way ?
0
votes
1answer
37 views

group by and display contents of last row for each result

I've got some data of two objects and I want to retrieve the last row of both the objects, preferably in one query. Table structure: CREATE TABLE data ( pid serial NOT NULL, dt timestamp without ...
1
vote
0answers
59 views

Postgres SQL Database Recovery

I am recovering a corrupted database, which may not really of had problems, but the server did. The host has restored a backup of the VM image (Ubuntu 12.04 LTS), however, its 10 days old, which is ...
2
votes
2answers
93 views

High volume data aggregation

I need to aggregate incoming data and save the resulting aggregates to a table. A sample of the data is below. id,time 1967,2014-04-12 00:42:55+00 1967,2014-04-12 00:42:51+00 1972,2014-04-12 ...
0
votes
0answers
56 views

Adding additional condition significantly degrades performance

Have the following query: SELECT * FROM table_A INNER JOIN table_B ON /* conditions */ INNER JOIN table_C ON /* conditions */ INNER JOIN table_D ON /* conditions */ WHERE table_B.state = 'active' ...
1
vote
0answers
58 views

Data Corruption on base backups created with wal-e?

I have streaming replication setup on Postgresql 9.1 with two machines on AWS EC2. The master has a cron job that does a daily base backup using the wal-e tool and uploading it to Amazon's S3 storage. ...
1
vote
1answer
115 views

log_min_duration_statement setting is ignored

I am running Postgresql 9.1 on Ubuntu. Exact Postgresql version is 9.1+129ubuntu1 as my package manager shows. I have 2 databases that are actively in use and they are used from a remote server. I ...
-1
votes
1answer
100 views

Select Into Regexp_replace doesn't write changes into newly generated table

I have been using this query in postgres 9.1 in order to remove '' from existing data. Below is a sample of the data before running regexp_replace. 6'' 6'' 6'' 20'' 12'' 18'' 20'' 8'' 10'' '' '' ...
1
vote
0answers
75 views

how do I debug postgresql 9.1 server terminating

my /var/log/postgresql/postgresql-9.1-main.log shows 2014-03-25 10:39:30 CET HINT: In a moment you should be able to reconnect to the database and repeat your command. 2014-03-25 10:39:30 CET LOG: ...
1
vote
1answer
107 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 ...
1
vote
0answers
73 views

Reset postgresql [closed]

I have trouble: I tried to restore PG backup from CentOS on my Ubuntu computer. But had a trouble: after placing backuped Centos /var/lib/pgsql/9.1/data/ to my /var/lib/postgresql/9.1/main at Ubuntu, ...
3
votes
1answer
55 views

restarting postgresql quickly

I'm reading over the postgresql admin cookbook. Some of the database server parameters require a restart and with a busy database, you may need to restart quickly. There are a number of things to do ...
0
votes
1answer
183 views

Postgresql restore data from file [duplicate]

I have a tar archive with full backup of my CentOS filesystem with pg9.1 installed. How can I restore one database from it?
3
votes
1answer
65 views

Use of integer instead of interval (of one type)

Our DB design presently has a interval column which will only be storing days (no other interval type) so it is making sense to use INT2 (smallint) instead of interval. Reference to documentation. ...
4
votes
2answers
2k views

upgrading from postgres 9.1 to 9.3 on ubuntu server

I have my production server(ubuntu 13.10) running with postgresql 9.1. I want to use few features of 9.3, hence want to upgrade. Could someone help me with upgrading from 9.1 to 9.3 so that there is ...
2
votes
1answer
246 views

Debugging why postgres is snowballing with system cpu usage

I am having an issue where my postgres database which run on a dedicated machine is getting hammered with kernal level cpu usage. This essentially takes down the web service that run on this database. ...
1
vote
1answer
52 views

PostgresSQL authentication error

I recently forgot my PostgreSQL 9.1 password on my windows 8 and it asks for password on pgAdmin III console. Can I retrieve the password or reset it?
5
votes
1answer
56 views

How to see amount of reusable space for a table

I had a huge table(about 300mil rows). After massive DELETE and VACCUUM table files have stopped to grow. That's exactly what I expected. But is there any way to see how much space became reusable?
0
votes
0answers
28 views

Changed password on Postgres but I still can log in with the old one [closed]

I changed my password via alter user, but can still log in with the old one. In the 9.1.6 version of postgresql I resolved this problem by killing all the processes through pg_terminate_backend, but ...
0
votes
1answer
446 views

PgPool 2 with HA Proxy

So, I'm looking to add high availability to a postgresql server. I've looked into some tutorials on the web but, haven't been able to find exactly what I'm looking for. E.g.: PostgreSQL ...
0
votes
1answer
275 views

pgpool2 setup on master-slave replication using postgreql 9.1

I have already setup 2 ubuntu server 12.04 LTS on my local machine using virtual box and is using the master-slave replication (postgresql 9.1). 192.168.0.109 = master 192.168.0.110 = slave my ...
1
vote
0answers
33 views

Pg_restore table size differences

What would account for the difference in table sizes between one PostgreSQL database and another restored from its dump file? On an Ubuntu 12.04 host, I'm running PostgreSQL 9.1, and I dumped my ...
0
votes
2answers
632 views

Postgres client unable to detect UTF-8 database

Context I am deploying a Vagrant box for my development team, and have encountered a problem restoring UTF-8 collated dumps. I don't believe it is related to the now-infamous "UTF8" has no equivalent ...
0
votes
2answers
71 views

How to change table/indexes structure for a query with two aggregated colums

Do you have any suggestion on how to improve a table structure or its indexes in order to have a single query run faster? The table has this structure: docid | character varying(17) | ...
0
votes
1answer
53 views

Rotate Postgres log at 5GB

How to make postgres 9.1 log to have maximum size 5GB and to be circle when comes to 5GB ? At the moment my log file is over 500GB. /var/lib/postgres/
1
vote
0answers
144 views

Correct pg_hba.conf to allow script to run locally with a specific db-user

I've got a working postgreSQL database with following pg_hba.conf: local all postgres peer local all all ...
3
votes
2answers
1k views

PostgreSQL: How to backup only One Schema from a database and restore it on another server

I have a database named "A" which has two schemas "B" and "C". I want to backup and restore Schema "B" on a different server? not sure how to do this as I am new to Postgres. Do I have to create a new ...
0
votes
2answers
148 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 ...
2
votes
1answer
413 views

Return ResultSet with column names from postgresql Stored procedures

I have the following postgresql Function: CREATE OR REPLACE FUNCTION readMessage(messageFor INT, qid INT = NULL, ctxt INT = NULL, messageFrom INT = NULL, byTimeStamp BOOLEAN = FALSE) RETURNS SETOF ...
0
votes
1answer
613 views

Howto disable Postgres listening on TCP?

Simply to avoid many problems in the first place I do not want my postgres server program to accept/listen to anything from any network (i.e. TCP/IP 4/6) connections. My setup is a Postgres 9.1 on ...
1
vote
0answers
51 views

using separate schemas or databases

For my web application with a postgresql backend I'm now looking into schema's. As I switched from MySQL to Postgresql(because of (amongst others) the proper geospatial extension) I was not aware of ...
1
vote
0answers
158 views

postgresql multi column unique or check constraint

First a word of pleading. To say I am a newbie to postgresql would be an insult to the newbies! I have been working on this for only a day or so. I have found several questions on this site, and ...
0
votes
0answers
100 views

Data migration of specific data from one DB to another

I am new to this site, I have one major question of data migration, I apologize before hand if the question is too silly. I have two data base on one server, I have one table with the same schema on ...
1
vote
1answer
47 views

Parsing the value and copying it to another column in postgresql

column_1 (varchar) has values with the format like 1024 MB, 2048 MB etc. There also exits column_2 (int). Now I would like to parse the value in column_1 and update the column_2 with values like 1024, ...
1
vote
1answer
346 views

Drop an index in postgresql

I had created an index wrongly and now im trying to drop that index. Since the datas are large for my table, dropping index is taking lot of time. Is there any other way to drop the index quickly? ...
0
votes
0answers
45 views

postgres-xc - ERROR: object already defined [closed]

I am configuring two data nodes and a coordinator on postgres-xc. I get eh following error: ERROR: PGXC Node datanode1: object already defined CREATE NODE pgxc_pool_reload ------------------ t (1 ...
2
votes
2answers
1k views

How to dump PostgreSQL database whose owner has no password?

First, some background on my setup: The server has root access disabled. So, I log-in as (say) john who also belongs to the sudo group and is therefore able to run superuser commands. I created a ...
1
vote
1answer
184 views

showing locks from all postgres relations

I'm trying to show all locks (DBMS-wide) in Postgres. I initially tried adapting the documented example to: SELECT pg_database.datname AS database, relation::regclass, pg_locks.database AS db_oid, ...
1
vote
0answers
197 views

Postgresql Streaming Replication - pgpool2 - failover

In my scenario I want pgpool to forward read only queries to slaves when the master goes down - I want my app to be in the "read only mode". How do I setup pgpool to accept read only queries when ...
1
vote
2answers
426 views

Taking a backup of a streaming WAL slave

I have an environment with pair of postgresql servers set up to do WAL streaming replication. I also have a test environment and periodically I want to snapshot the production DBMS and restore that ...
0
votes
1answer
202 views

Help with Postgres 9.1 data import (is 4x expected data size, 4x slower than MySQL, and index still needed)

I have 25 billion <int, int, float> rows that I'm trying to import into Postgres, and after 77% of the data being imported, the Postgres data folder is taking up 840GB, about 4x the storage ...