In this note i will show how to list all Oracle “databases” (equivalent to SHOW DATABASES command in MySQL), get the current schema name and how to switch to a different schemas using the command-line interface of SQL*Plus. To view performance metrics for a PostgreSQL database cluster, click the name of the database to go to its Overview page, then click the Insights tab. Sometimes the table names are the same in various databases; in that case, the show table command is very beneficial. Assume that we have already created a database in our previous chapter. Export a PostgreSQL database. These variables can be set using the SET statement, by editing the postgresql.conf configuration file, through the PGOPTIONS environmental variable (when using libpq or a libpq-based application), or through command-line flags when starting the postgres server. There is no show databases in PostgreSQL(psql) Get the list of databases by using the meta-command \l: All source code included in the card PostgreSQL: Show size of all databases is licensed under the license stated below. As I said before, you need to create a database in PostgreSQL before making the connection with Python. The Select object drop-down menu lists the cluster itself and all of the databases in the cluster. Connect to the server. Resources. Unlike the \l meta-command the query above will show only the names of the databases:. Version 13.0 performs better than 12.4 out of the box, and the difference is even more striking when both servers are tuned. By default, PosgreSQL has 3 databases: postgres, template0 and template1. Using Psql Shell: One way to list all the tables in a database is to use the below command after logging into the database:. Description. Posted on October 30, 2018 by admin. In this post, I am sharing a simple SHOW ALL command which we can use for getting the list of the defined configuration of PostgreSQL Server. postgres=# select datname from pg_database; datname postgres test11 template1 template0 (4 rows) You can also use \l or \l+ to show all databases in PostgreSQL server which you are connected to. You can export a PostgreSQL database to a file by using the pg_dump command line program, or you can use phpPgAdmin.. Steps to reproduce, if exist: Setup connection for a database server where you have access to some of the databases, but not all. To export a PostgreSQL database using the pg_dump program, follow these steps:. Type the following command, replacing dbname with the name of the database that you want to delete: dropdb dbname You can use the psql command-line program to determine the sizes of PostgreSQL databases and tables. Disabling "Show all databases" and selecting a single database that I have access to works fine. Following discussion (http://archives.postgresql.org/pgsql-hackers/2006-03/msg01208.php) here's a patch to add tablespace to the output of psql's \\l+. The first two are templates, which are used when creating new databases. If you are coming from MySQL, you may want to use the popular SHOW TABLES statement that displays all tables in a specific database.. PostgreSQL does not support the SHOW TABLES statement directly but provides you with an alternative. PostgreSQL: How to show table sizes When you have a large PG database, you may want to find out which tables are consuming the most disk space. Using the command line. PostgreSQL is one of the latest database engines developed by volunteers from around the world. PostgreSQL databases should be backed up regularly. Type the command \l in the psql command-line interface to display a list of all the databases on your Postgres server. All the tables of a postgresql show databases database first, you have the ability [ ]. 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