"versions between scn|timestamp" and "as of timestamp" actually does not need flashback database set

Hi

Oracle 19c RAC EE.

OEL 7

SQL> select flashback_on from v$database;FLASHBACK_ON      ------------------NO                1 row selected.

I can successfully execute and see which rows were changed between that timeframe (within by undo_retention parameter of course).

SQL> select versions_startscn, versions_starttime, versions_endscn, versions_endtime, versions_xid, versions_operation, ...FROM tab1VERSIONS between timestamp sysdate -1/24/20 and sysdateWHERE id = 65;

Also I can query table's data at certain time (within by undo_retention parameter of course).

SQL> select * from tab1 as of timestamp sysdate -1/24 where id = 65;

I understood, that these features are available whenever I have flashback database set to ON.