Oct 27, 2012 · To find active (i.e. started) databases, look for *_pmon_* processes on Unix (there's one per database instance), and Oracle services on Windows. To locate installations of Oracle database software, look at /etc/oratab on Unix.

You can use Oracle Data Dictionary to get information about oracle objects. You can get list of tables in different ways: select * from dba_tables or for example: select * from dba_objects where object_type = 'TABLE' Then you can get table columns using table name: select * from dba_tab_columns

Jun 9, 2010 · You can think of a MySQL "database" as a schema/user in Oracle. If you have the privileges, you can query the DBA_USERS view to see the list of schemas: SELECT * FROM DBA_USERS;

Aug 19, 2020 · 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.

Jan 28, 2011 · Either of the following SQL will return all schema in Oracle DB. select owner FROM all_tables group by owner; select distinct owner FROM all_tables;

Nov 5, 2024 · In this article, we will learn about How to Show or List Databases by understanding the various methods with the help of examples and so on. PL/SQL Show/List Databases. Listing all schemas in an Oracle Database can be a common requirement for database administrators and developers.

So, to list all databases (or more accurately, all instances) on an Oracle server, you can follow these steps: Connect to the Oracle Server: Use a command-line tool like SQL*Plus or a graphical tool like Oracle SQL Developer to connect to the Oracle server.

Nov 14, 2011 · These views are helpful for working with DB links in Oracle: DBA_DB_LINKS - All DB links defined in the database; ALL_DB_LINKS - All DB links the current user has access to; USER_DB_LINKS - All DB links owned by current user; See more in Oracle documentation

Jun 2, 2023 · To show a list of databases in SQL you can use these commands: Let’s see them in more detail. Oracle has a different server-database model to SQL Server and MySQL, called Container Databases and Pluggable Databases. I’ve written a guide to them here. If you want to see the current name of the database: This would show the name of the database:

The following contains information on how to retrieve database information for Oracle objects such as tables, views, indexes, packages, procedures, functions, and triggers. The queries all query the Oracle system views located in the SYS schema.