Selecting Database Name
From TekiWiki
To select the Oracle Database name, the most common method is:
SELECT name FROM v$database
This, however, requires special permissions. The database name is part of the session context and can be selected using the following function:
SELECT sys_context('USERENV', 'DB_NAME') FROM dual
When used as part of a larger query, this does not need to join the v$database pseudo table.
This is particularly useful in packaged solutions like PeopleSoft, SAP etc.
For more hints and tips like this, see the eBook:
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