SQL> alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';
Session altered.
SQL> select created from v$database;
CREATED
------------------------------------------------------------------------------------------------------------------------
2015-06-10 13:31:51 ------------->库的建立时间
SQL> set pages 100 lines 120
SQL> col action format a6
SQL> col namespace format a10
SQL> col version format a10
SQL> col comments format a15
SQL> col action_time format a30
SQL> col bundle_series format a15
SQL> alter session set nls_timestamp_format = 'yyyy-mm-dd hh24:mi:ss.ff';
Session altered.
SQL>
SQL> select * from dba_registry_history;
ACTION_TIME ACTION NAMESPACE VERSION ID BUNDLE_SERIES COMMENTS
------------------------------ ------ ---------- ---------- ---------- --------------- ---------------
2011-09-17 10:21:11.595816 APPLY SERVER 11.2.0.3 0 PSU Patchset 11.2.0.2.0
2015-06-10 13:36:01.203202 APPLY SERVER 11.2.0.3 8 PSU PSU 11.2.0.3.8------------->PSU的应用时间