SQL> select count(*) from t;
COUNT(*)
----------
5442048
***********************************
SQL> alter table t1 nologging;
SQL> insert /*+append*/ into t1
2 select * from t;
5442048 rows created.
Elapsed: 00:00:55.73
****************************
SQL> create table t1 nologging parallel (degree 2) as select * from t;
Table created.
Elapsed: 00:00:56.79
********************************
SQL> insert /*+APPEND */ into t1
2 select /*+ parallel(t,4) */ * from t;
5442048 rows created.
Elapsed: 00:01:38.39
***********************************
alter table t1 nologging;
SQL> insert into t1
2 select * from t;
5442048 rows created.
Elapsed: 00:01:46.18
***********************************
SQL> alter table t1 logging;
Table altered.
SQL> insert into t1
2 select * from t;
5442048 rows created.
Elapsed: 00:02:03.51
*********************************
SQL> create table t1
2 as
3 select * from t;
Table created.
Elapsed: 00:03:03.34
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