This tag is specifically for PostgreSQL version 9.1

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2
votes
1answer
329 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
50 views

RIGHT() function in postgresql 9.1 not behaving as anticipated?

The following is with regard to PostgresQL 9.1 : I am using the right() and left() string functions to fix a few instances where data was input into my database being “off by one” .. so I’m doing ...
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
67 views

What is the best way to design CMDB application

Currently I am developing an Ruby On Rails application in CMDB domain and I am not sure about all the properties (columns) of an component(table) so I am designing a DB with the properties which ...
0
votes
0answers
13 views

Failure Restoring PostgreSQL database

I have a backup of my database as a .backup file that I made via pgAdminIII. The backed up database has been accidentally deleted so I have to use this .backup file to restore it. I am only praying ...
0
votes
2answers
831 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 ...
1
vote
0answers
34 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 ...
7
votes
1answer
580 views

Unexpected Seq Scan when doing query against boolean with value NULL

I have a database column called auto_review where column type is boolean. There is an index for that field, created using the ActiveRecord ORM. CREATE INDEX index_table_on_auto_renew ON table USING ...
0
votes
2answers
72 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
55 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/
19
votes
3answers
28k views

How do I list all schemas in PostgreSQL?

When using PostgreSQL v9.1, how do I list all of the schemas using SQL? I was expecting something along the lines of: SELECT something FROM pg_blah;
0
votes
2answers
87 views

Big table size in PostgreSQL while number of rows is small

Tables' size in the PostgreSQL DB are big while the number of rows is relatively small (less then 500K rows). Vacuum of the specific table did not solve the problem. Only by deleting and importing the ...
3
votes
2answers
2k 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 ...
3
votes
1answer
352 views

Postgres backup and WAL to S3

We are looking for a solution for the following problem: We have set up streaming replication so we have a master DB and a slave DB, we want to have basebackups and WAL files sent to our S3 storage ...
1
vote
0answers
159 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 ...
0
votes
0answers
55 views

How do I script out views using LIKE instead of double tilde?

I'm reading the PostgreSQL chapter of Seven Databases in Seven Weeks. Yesterday the book asked me to create a view in psql using this command: CREATE VIEW holidays AS SELECT event_id AS holiday_id, ...
1
vote
1answer
1k 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' ...
0
votes
2answers
156 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
505 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
712 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
168 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 ...
1
vote
0answers
52 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 ...
0
votes
0answers
112 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 ...
0
votes
0answers
55 views

PostgreSQL Failover Issue

I have 3 PostgreSQL (9.1) server's, 1 master and 2 slave. I have configured streaming replication between them. Now when i shutdown the primary server and convert one of the slave to act as primary ( ...
1
vote
1answer
125 views

Write performance of Postgresql 9.1 with read-only slave

I have a Postgresql 9.1 database that is being hosted by Heroku. It currently has a read-only "follower". I need to truncate several large tables (over 100GB) of data and reloads them. Is the ...
1
vote
1answer
68 views

Slave as a master in PostgreSQL [closed]

I have set up a hot standby in PostgreSQL 9.0 on Windows. I want that, at the time of fail-over, the slave should take over the role of master and start performing operations (both read and write) ...
1
vote
1answer
49 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
380 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? ...
1
vote
2answers
469 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
0answers
46 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 ...
0
votes
1answer
352 views

Truncate table is taking too long in PostgreSQL [closed]

I have many databases on the same server, all with same templates. When I execute truncate command on exceptions table in each database, it works fine and executes immediately but on database named ...
0
votes
1answer
64 views

Recovering Postgres database

OK. I'm in a bit of trouble. I've got an Ubuntu, had Postgres 9.1 installed. There was something wrong with it - I couldn't start it for some reason. Out of panic, I backed up ...
2
votes
2answers
2k 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 ...
2
votes
1answer
295 views

Cannot connect to server. Too many symbolic links. Postgres Error [closed]

I get this error when I try connecting to a PostgreSQL server: psql: could not connect to server: Too many levels of symbolic links Is the server running locally and accepting connections on ...
1
vote
1answer
206 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
201 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 ...
0
votes
1answer
210 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 ...
0
votes
1answer
1k views

Create Language plperl - Error: could not load library plperl.dll

When I create language plperl , I get error: ERROR: could not load library "C:/Program Files/PostgreSQL/9.1/lib/plperl.dll": The specified module could not be found. But in my computer, ...
0
votes
1answer
105 views

pg_timezone_names view is empty - can be recreated?

For some strange reason pg_timezone_names view is empty. Is there a way to recreate it?
2
votes
2answers
999 views

Select a range of integers

I have a 'range' of integers (in this case destination ports) that occur: For example: 33848-33254. I want to select 'all' of these without having to do one at a time. is there a range operator? Or ...
-1
votes
2answers
330 views

PostgreSQL kill - Sighup pid [closed]

To reload the configuration files, we send the SIGHUP signal to the postmaster, which then passes that on to all connected backends. That's why some people call reloading the server ...
0
votes
0answers
15 views

Postgres 9.1.6 Error: index contains unexpected zero page at block 0 [duplicate]

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 ...
1
vote
0answers
458 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
681 views

Convert units of measurement

Looking to calculate the most suitable unit of measurement for a list of substances where the substances are given in differing (but compatible) unit volumes. Unit Conversion Table The unit ...
3
votes
1answer
498 views

Profiling PostgreSQL

We have a system built with Python 2.7, Django, PostgreSQL 9.1 and PostGIS 1.5. In this system there is some extensive validation processes that are, well, intensive. Our machine: SO: CentOS 6 HW: 8 ...
1
vote
1answer
250 views

Have aggregate function group results in one row

I have a table that has the following columns: debit credit payment_method class Now I will perform this query: select sum(debit - credit), payment_method, class from my_table group by ...
2
votes
2answers
1k views

PostgreSQL difference between VACUUM FULL and CLUSTER

I have a table with 200 GB of size occupied by data and 180 GB of size by the 6 indexes on it. It is 30% bloated, so I want to reclaim unwanted space occupied by it. It is clustered on job_id_idx ...
2
votes
1answer
1k views

Postgresql out of memory while trying to a request of ~500mb

I started getting out-of-memory errors on os postgresql-9.1 server running on a x64 Debian with 4GB of RAM, dedicated to postgresql. Top returns something like this, which seems that the problem is ...
7
votes
2answers
2k views

How to do incremental/differential backup every hour in Postgres 9.1?

Trying to do an hourly hot incremental backup of a single postgres server. I have the following setup in postgresql.conf: max_wal_senders=2 wal_level=archive archive_mode=on archive_command='copy ...
4
votes
3answers
18k views

How do I insert a row which contains a foreign key?

Using PostgreSQL v9.1. I have the following tables: CREATE TABLE foo ( id BIGSERIAL NOT NULL UNIQUE PRIMARY KEY, type VARCHAR(60) NOT NULL UNIQUE ); CREATE TABLE bar ( id BIGSERIAL ...