Have you ever accidentally deleted a database table or damaged the disk where the database is stored? If you encounter this situation, I believe you will feel very frustrated, because the results of your hard work for a few weeks may be overwhelmed.
For PostgreSQL database backup, one of the methods described in the official manual is ldquo and SQLDumprdquo. (another method is to directly back up the files in the file system.
For PostgreSQL database backup, one of the methods described in the
tl;dr: Don ' t ever set Fsync=off, don ' t kill-9 The postmaster then deletepostmaster.pid, don ' t run PostgreSQL on network file systems.Reports of database corruption on the PostgreSQL mailing list is uncommon, but hardly rare. While a few data
first, the use of Pg_dump:Import and export of databases is one of the most commonly used features, each of which provides tools for this, such as Oracle's Exp/imp,informix Dbexp/dbimp,mysql mysqldump, and PostgreSQL provides a corresponding tool
first, the use of Pg_dump:Import and export of databases is one of the most commonly used features, each of which provides tools for this, such as Oracle's Exp/imp,informix Dbexp/dbimp,mysql mysqldump, and PostgreSQL provides a corresponding tool
Comparison of PostgreSQL database backup and recovery technologies
There are three completely different methods to back up PostgreSQL data:
SQL dump
File System-level backup
Online backup
I. SQL dump
The pg_dump application tool is used to
PostgreSQL tutorial (18): client commands (2), postgresql tutorial
VII. pg_dump:
Pg_dump is a tool used to back up PostgreSQL databases. It can even perform a full and consistent backup when the database is being used concurrently without blocking
One way to do a backup of the PostgreSQL database according to the official manual is to use "SQL Dump" (another way is to directly back up files in the file system, refer to the official manual).The basic usage is as follows:Pg_dump dbname >
In heap, we rely on PostgreSQL to support most back-end heavy tasks, we store each event as a hstore blob, and we maintain a PostgreSQL array of completed events for each tracked user and sort those events by time. Hstore allows us to attach
Initdb will specify a PGDATA directory, which is where PostgresQL stores data, such as:/var/lib/pgsql/10/data.====== Display Data Catalog1. Enter PsqlSudo-u Postgres Psql2. Locate the Data directorypostgres=# SHOW data_directory;Data_directory-------
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