LOCALTIMESTAMP returns the current date and time in the session time zone.
TIMESTAMP
LOCALTIMESTAMP [ (timestamp_precision) ]
timestamp_precision specifies the fractional second precision of the time value returned.
LOCALTIMESTAMP returns a value such as 09-AUG-06 08.11.37.045186 AM.
LOCALTIMESTAMP(2) returns a value such as 09-AUG-06 08.11.37.040000 AM.