List of databases installed on local machine

I am using Oracle 10g. How can I see the different databases installed on my local machine? Also I want to see a list of tables in a particular database. I want to use SQL*Plus to get this information. Your help will be greatly appreciated.

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To see the list of databases on your server, you need to follow one of the following procedures:

In Windows, go to Control Panel->Administrative Tools->Services and look for any service with a name similar to 'OracleServiceSID.' The SID is your instance name. There will be one instance for each database.

In Unix/Linux, look for a file called "oratab" in either the /var/opt/oracle directory or the /etc directory. This file will contain one entry for each instance.

Unfortunately, there is no native method in SQL*Plus to see the above information.

To see the list of tables in the database, you can query the DBA_TABLES Data Dictionary view, similar to the following: 

SELECT owner,table_name FROM dba_tables;

The Data Dictionary views are fully described in the Oracle 10g Reference Guide.

This was first published in October 2006

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