SYSDATE is an Oracle specific SQL function which serves to give the current date and time of the database. Use for questions related to the SYSDATE function.
SYSDATE
returns the current date and time set for the database. The return type is DATE. It can be used as follow to get the current date/time:
SELECT SYSDATE
FROM dual;
SELECT TO_CHAR(SYSDATE, 'MM/DD/YYYY HH24:MI:SS') AS DATE_TIME
FROM DUAL;
Sources: