Oracle equaivalent of java System.currentTimeMillis()?

Question

I want to be able to store the current time in milliseconds in an Oracle number field. How do I do this via a query?

select systimestamp from dual; 

Answer 1

Try this -

select extract(day from(sys_extract_utc(systimestamp AT TIME ZONE 'GMT') - to_timestamp('1970-01-01', 'YYYY-MM-DD'))) * 86400000 + to_number(to_char(sys_extract_utc(systimestamp AT TIME ZONE 'GMT'), 'SSSSSFF3')) from dual;