一旦我意识到我正在运行Oracle数据库而不是MySQL，我就找到了答案

Once I realized I was running an Oracle database, not MySQL, I found the answer

select * from v$database;

或

select ora_database_name from dual;

同时尝试.来源和信誉归功于: http://www.perlmonks.org/?node_id=520376

Try both. Credit and source goes to: http://www.perlmonks.org/?node_id=520376.