| Function | Description |
| CURRENT_TIMESTAMP() | Returns a TIMESTAMP WITH TIME ZONE containing the current session time along with the session time zone. |
| EXTRACT({ YEAR | MONTH | DAY | HOUR | MINUTE | SECOND } | { TIMEZONE_HOUR | TIMEZONE_MINUTE } | { TIMEZONE_REGION | } TIMEZONE_ABBR ) FROM x) | Extracts and returns a year, month, day, hour, minute, second, or time zone from x; x may be one of the timestamp types or a DATE. |
| FROM_TZ(x, time_zone) | Converts the TIMESTAMP x and time zone specified by time_zone to a TIMESTAMP WITH TIMEZONE. |
| LOCALTIMESTAMP() | Returns a TIMESTAMP containing the current time in the session time zone. |
| SYSTIMESTAMP() | Returns a TIMESTAMP WITH TIME ZONE containing the current database time along with the database time zone. |
| SYS_EXTRACT_UTC(x) | Converts the TIMESTAMP WITH TIMEZONE x to a TIMESTAMP containing the date and time in UTC. |
| TO_TIMESTAMP(x, [format]) | Converts the string x to a TIMESTAMP. You may also specify an optional format for x. |
| TO_TIMESTAMP_TZ(x, [format]) | Converts the string x to a TIMESTAMP WITH TIMEZONE. You may also specify an optional format for x. |