It has a command line user interface and its own commands and environment, and it provides access to the Oracle database. SQL*Plus is an interactive and batch query tool that is installed with every Oracle database installation as well as SQL*Plus Client. The meta commands are processed by the client tool itself, and database commands are processed by the database server. ![]() The following diagram illustrates the process of the meta and database commands of SQL*Plus and PSQL client. We also provide Oracle SQL*Plus equivalent commands in PostgreSQL psql. In this post, we discuss SQL*Plus (mostly applicable for 12c and 19c version), which is an Oracle command line client tool, and psql (higher than 9.6 Version), which is a PostgreSQL command line client tool. After you migrated your databases from Oracle to PostgreSQL, the most common challenges that any developer or DBA face during the usage of PostgreSQL are with PSQL client as they are used to Oracle SQL*Plus client tool. These services are Amazon Relational Database Service (Amazon RDS) for PostgreSQL and Amazon Aurora with PostgreSQL compatibility. AWS offers services that make PostgreSQL database deployments easy to set up, manage, and scale for the cloud in a cost-efficient manner. PostgreSQL is considered to be the primary open-source database choice when migrating from commercial databases such as Oracle. PostgreSQL has become the preferred open-source relational database for many enterprise developers and startups, and powers leading business and mobile applications. Commands processed by database server, often known as server commands or database commands. ![]() Enable or disable printing of column headings.Perform calculations on, store, and print from query results.These commands help to perform the following: Commands processed by the database CLI client locally, often known as meta commands.In general, when you connect to a database server using any database command line client tool, you run two types of commands on the CLI: You can directly log in to the database server host and use a utility to manage the database, or you can use a desktop GUI or CLI tools or web browser-based interface to interact with the database server remotely. There are various ways to connect to a database. You need to connect to the database to build or run the SQL code, generate reports, and diagnose application problem related to the database. When you’re working as an application developer or database administrator, you often need to deal with SQL statements to explore your database for various reasons. December 2023: This post was reviewed and updated for accuracy.
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