{{parent page="DataBase"}}

===PostgreSQL topics===
~ [[PostgresqlInstall Installation]]
~ [[PostgresqlTuning Tuning]]
~ [[PostgresqlBackup Backup and Restore]]
~ [[PostgresqlRoles Users and Roles]]
~ [[PostgresqlPHPSample PHP Connect Sample]]
~ [[PostgresqlSize Database or table size]]

==vacuum==
When the database is in trouble, do a full database vacuum in standalone mode.

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postgres -D /usr/local/pgsql/data some_database
vacuum full;

OR
If vacuum full is not possible, 
vacuumdb -a -z
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==List databases==
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psql -l
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==Create database==
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CREATE DATABASE d1 WITH OWNER=some_user ENCODING='UTF8' ; 
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==Query running processes==
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select * from pg_stat_activity;
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