postgres spatial

1. Fully Automated backupNeed to install postgres (preferably the same version) on the backup machineIn the Postgres directory to create a password to save the file (plaintext, so confidentiality is important), if not established, because each backup must enter a password, not automatic backup# create a. pgpass file touch. Pgpass # write the following in a file that can be multiple lines # 127.0.0.1:5432:db

In a (bad) PostgreSQL query, just a little to change (any (array[...)) to any (VALUES (...) ) will be able to reduce the query time from 20s to 0.2s. From the simplest learning to use EXPLAIN ANALYZE , to learn to use the Postgres community A lot of learning time input will have a hundredfold time to return. using Postgres to monitor slow Postgres queries Earli

Problem: Fatal error: User "Postgres" Ident authentication failed Note: This is because there is no remote access configured and authentication method has not changed, only need to change the use of account password authentication. Workaround: Locate pg_hba.conf (Find/-name pg_hba.conf), change the ident of method to MD5, and change the IP port to 0.0.0.0/0, or the desired IP address. After the modification is completed, the dire

Recently, I have been working on a project related to PostgreSQL database, documenting the knowledge that I have learned in this process. About PostgreSQL database online already have too many relevant introduction, in order to blog the system or first look at the Wikipedia on the PostgreSQL database introduction.PostgreSQL is a free object-relational database server (database management system), issued under a flexible bsd--style license. It provides a choice for users in addition to other open

Postgresql automatic backup generates one file every day and compresses it automatically: 1. write a shell script and save it as/home/db/dump. shpg_dumpdb | gzip gt;/home/db/db((date?policy=m=d=.backup.gz $ (date + % Y % m % d) can be set by yourself. You need to set the execution permission to execute... Postgresql automatic backup generates one file every day and automatically compresses it:1. write a shell script and save it as/home/db/dump. sh.Pg_dump db | gzip>/home/db $You can set $ (dat

Tags: handle toe test connect ant Import Export command exp GREWhat this article contains: Use commands to manipulate import and export of Oracle, Postgres, MySQL, including logging on to dataNote: I am using the Center OS operating system in the company, so both Oracle and Postgres are used in Linux and not tested in other tools, and MySQL is used on its own laptops, both under Linux and DOS commands.1.Ora

Postgres Database backup:Pg_dump [OPTION] ... [DBNAME]/USR/PGSQL-9.4/BIN/PGdump-fc-h 127.0.0.1-upostgres database name >/var/pgsqlback/ruleplatform.sql. '/bin/date + '%Y %b%d%h%m "#pg_dump is to back up the database directives#-F Where to put the backup file;#-h 127.0.0.1 Backup Server IP address#postgres is the user name of the database#RulePlatform database name#> Export PathPresented in the form of:/var/

Learn the PG start-up process today.The start command for pg./bin/postgres-d Path/to/data.1. Subject monitoring ProcessThe postmaster process enters an infinite loop, waiting for the client to request and provide the requested service. In an infinite loop, the postmaster process periodically checks for client service requests by invoking the operating system interface Select, if not, resumes the loop and, if there is one, creates a

Postgres is a very good open-source database. Good performance. When it comes to databases, there's the topic of backup and import. Backups are also broken down in a number of ways. 1. Full backup This is the way most people use it to back up the entire database, including all database objects, such as user tables, system tables, indexes, views, and stored procedures. But it takes more time and space, so it's generally recommended to do a full backup

Postgres can not be directly accessed between different databases, such as database Test1 and test2, each database has a table of TableA; I am using the operating system Win8.1,postgres version 9.3.6; Access to Postgres using the PGADMINIII tool; Create a TableA in two databases (TEST1,TEST2) respectively; Test1 database creates TableA and inserts data: CREATE T

Today development found me, said their database connection is not up, may be too many connections, and then I log on to the server, and try to log into the database, is also an error:Psql:FATAL:sorry, too many clients alreadyIt is clear that the database connection is full. Then look at the database connection process:[Email protected] ~]$ Ps-ef |grep postgresPostgres 3406 18212 0 00:35? 00:01:00 postgres:denaliadmin region_na 172.16.60.16 (51976) idlePostgres 4221 18212 0 01:09? 00:00:03 postgr

SIGTERM New connections are no longer allowed, but all active sessions are allowed to complete their work properly, and are closed only after all sessions have completed the task. This is smart off. SIGINT No new connections are allowed, send SIGTERM to all active servers (let them exit immediately), and wait for all child processes to exit and close the database. This is quick to close. Sigquit Causes Postgres to send sigquit t

Tags: res command src. SH name touch Shell strong imageThe first step: Connect to the Linux service via Xshell or other tools,Step Two: Create a script: Touch se.shStep three: Enter I to enter the following command on behalf of the start input:The script is as follows: (SQL statement can be any complex SQL, simple to write here)! /bin/shPsql-h 127.0.0.1-u postgres-w-D db_test >/root/zyy SELECT * from Test;EofScript parsing:-H represents the IP of the

"Peer Authentication" means that it ' s comparing your database username against your Linux username. It should work if your ' re logged in as postgres . You probably don ' t want md5 pg_hba to hits that rule in, as the postgres database user generally doesn ' t has a password.–The problem you has is, so if u dont define the Host, your system would decide.Explicit add "-H localhost", this would fix itPg_dum