flashback table t1 to before drop;
flashback table t1 to before drop rename to t2;

flashback database db1 to before drop;
flashback database db1 to before drop rename to db2;
flashback schema db1 to before drop;
flashback schema db1 to before drop rename to db2;

flashback tenant tenant1 to before drop;
flashback tenant tenant1 to before drop rename to tenant2;

purge table t1;

purge database db1;
purge schema db1;

purge tenant tenant1;