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