SQL> set lines 100 pages 999
SQL> select snap_id, snap_level, to_char(begin_interval_time, ‘dd/mm/yy hh24:mi:ss’) starting
2 from dba_hist_snapshot
3 order by 1;
SNAP_ID SNAP_LEVEL STARTING
———- ———- —————–
11950 1 27/07/09 23:00:24
11951 1 28/07/09 00:00:25
11952 1 28/07/09 01:00:26
11953 1 28/07/09 02:00:27
11954 1 28/07/09 03:00:28
11955 1 28/07/09 04:00:30
11956 1 28/07/09 05:00:31
11957 1 28/07/09 06:00:31
11958 1 28/07/09 07:00:32
11959 1 28/07/09 08:00:33
11960 1 28/07/09 09:00:34
11961 1 28/07/09 10:00:35
11962 1 28/07/09 11:00:36
11963 1 28/07/09 12:00:37
11964 1 28/07/09 13:00:38
11965 1 28/07/09 14:00:39
11966 1 28/07/09 15:00:40
11967 1 28/07/09 16:00:41
11968 1 28/07/09 17:00:43
11969 1 28/07/09 18:00:43
11970 1 28/07/09 19:00:45
11971 1 28/07/09 20:00:46
11972 1 28/07/09 21:00:46
11973 1 28/07/09 22:00:47
11974 1 28/07/09 23:00:49
11975 1 29/07/09 00:00:50
11976 1 29/07/09 01:00:52
11977 1 29/07/09 02:00:52
11978 1 29/07/09 03:00:53
11979 1 29/07/09 04:00:54
11980 1 29/07/09 05:00:55
11981 1 29/07/09 06:00:56
11982 1 29/07/09 07:00:57
11983 1 29/07/09 08:00:58
11984 1 29/07/09 09:00:59
11985 1 29/07/09 10:00:01
11986 1 29/07/09 11:00:02
11987 1 29/07/09 12:00:02
11988 1 29/07/09 13:00:03
11989 1 29/07/09 14:00:04
11990 1 29/07/09 15:00:05
11991 1 29/07/09 16:00:07
11992 1 29/07/09 17:00:08
11993 1 29/07/09 18:00:09
11994 1 29/07/09 19:00:10
11995 1 29/07/09 20:00:11
11996 1 29/07/09 21:00:12
11997 1 29/07/09 22:00:12
11998 1 29/07/09 23:00:14
11999 1 30/07/09 00:00:15
12000 1 30/07/09 01:00:16
12001 1 30/07/09 02:00:17
12002 1 30/07/09 03:00:18
12003 1 30/07/09 04:00:19
12004 1 30/07/09 05:00:20
12005 1 30/07/09 06:00:21
12006 1 30/07/09 07:00:22
12007 1 30/07/09 08:00:23
12008 1 30/07/09 09:00:24
12009 1 30/07/09 10:00:25
12010 1 30/07/09 11:00:26
12011 1 30/07/09 12:00:27
12012 1 30/07/09 13:00:28
12013 1 30/07/09 14:00:29
12014 1 30/07/09 15:00:30
12015 1 30/07/09 16:00:31
12016 1 30/07/09 17:00:32
12017 1 30/07/09 18:00:33
12018 1 30/07/09 19:00:34
12019 1 30/07/09 20:00:35
12020 1 30/07/09 21:00:36
12021 1 30/07/09 22:00:38
12022 1 30/07/09 23:00:39
12023 1 31/07/09 00:00:40
12024 1 31/07/09 01:00:42
12025 1 31/07/09 02:00:43
12026 1 31/07/09 03:00:44
12027 1 31/07/09 04:00:45
12028 1 31/07/09 05:00:46
12029 1 31/07/09 06:00:47
12030 1 31/07/09 07:00:47
12031 1 31/07/09 08:00:48
12032 1 31/07/09 09:00:49
12033 1 31/07/09 10:00:51
12034 1 31/07/09 11:00:52
12035 1 31/07/09 12:00:53
12036 1 31/07/09 13:00:54
12037 1 31/07/09 14:00:55
12038 1 31/07/09 15:00:56
12039 1 31/07/09 16:00:57
12040 1 31/07/09 17:00:58
12041 1 31/07/09 18:00:59
12042 1 31/07/09 19:00:00
12043 1 31/07/09 20:00:01
12044 1 31/07/09 21:00:02
12045 1 31/07/09 22:00:03
12046 1 31/07/09 23:00:04
12047 1 01/08/09 00:00:06
12048 1 01/08/09 01:00:07
12049 1 01/08/09 02:00:08
12050 1 01/08/09 03:00:09
12051 1 01/08/09 04:00:10
12052 1 01/08/09 05:00:10
12053 1 01/08/09 06:00:11
12054 1 01/08/09 07:00:13
12055 1 01/08/09 08:00:14
12056 1 01/08/09 09:00:15
12057 1 01/08/09 10:00:16
12058 1 01/08/09 11:00:17
12059 1 01/08/09 12:00:18
12060 1 01/08/09 13:00:19
12061 1 01/08/09 14:00:20
12062 1 01/08/09 15:00:21
12063 1 01/08/09 16:00:22
12064 1 01/08/09 17:00:23
12065 1 01/08/09 18:00:24
12066 1 01/08/09 19:00:25
12067 1 01/08/09 20:00:26
12068 1 01/08/09 21:00:27
12069 1 01/08/09 22:00:28
12070 1 01/08/09 23:00:29
12071 1 02/08/09 00:00:30
12072 1 02/08/09 01:00:32
12073 1 02/08/09 02:00:33
12074 1 02/08/09 03:00:34
12075 1 02/08/09 04:00:35
12076 1 02/08/09 05:00:36
12077 1 02/08/09 06:00:37
12078 1 02/08/09 07:00:38
12079 1 02/08/09 08:00:39
12080 1 02/08/09 09:00:40
12081 1 02/08/09 10:00:41
12082 1 02/08/09 11:00:42
12083 1 02/08/09 12:00:43
12084 1 02/08/09 13:00:44
12085 1 02/08/09 14:00:45
12086 1 02/08/09 15:00:46
12087 1 02/08/09 16:00:47
12088 1 02/08/09 17:00:47
12089 1 02/08/09 18:00:48
12090 1 02/08/09 19:00:49
12091 1 02/08/09 20:00:50
12092 1 02/08/09 21:00:51
12093 1 02/08/09 22:00:52
12094 1 02/08/09 23:00:53
12095 1 03/08/09 00:00:54
12096 1 03/08/09 01:00:56
12097 1 03/08/09 02:00:57
12098 1 03/08/09 03:00:58
12099 1 03/08/09 04:00:59
12100 1 03/08/09 05:00:00
12101 1 03/08/09 06:01:01
12102 1 03/08/09 07:00:02
12103 1 03/08/09 08:00:03
12104 1 03/08/09 09:00:04
12105 1 03/08/09 10:00:05
12106 1 03/08/09 11:00:06
12107 1 03/08/09 12:00:07
12108 1 03/08/09 13:00:08
12109 1 03/08/09 14:00:09
12110 1 03/08/09 15:00:10
12111 1 03/08/09 16:00:11
12112 1 03/08/09 17:00:12
12113 1 03/08/09 18:00:13
12114 1 03/08/09 19:00:14
12115 1 03/08/09 20:00:15
12116 1 03/08/09 21:00:16
12117 1 03/08/09 22:00:17
12118 1 03/08/09 23:00:18
12119 1 04/08/09 00:00:19
12120 1 04/08/09 01:00:20
12121 1 04/08/09 02:00:22
12122 1 04/08/09 03:00:22
12123 1 04/08/09 04:00:23
12124 1 04/08/09 05:00:24
12125 1 04/08/09 06:00:25
12126 1 04/08/09 07:00:26
12127 1 04/08/09 08:00:28
12128 1 04/08/09 09:00:29
12129 1 04/08/09 10:00:30
12130 1 04/08/09 11:00:32
12131 1 04/08/09 12:00:33
12132 1 04/08/09 13:00:33
12133 1 04/08/09 14:00:34
12134 1 04/08/09 15:00:35
185 rows selected.
SQL>
If you want to change the retention police for the snapshot to 20 days:
exec dbms_workload_repository.modify_snapshot_settings (retention => 20*24*60);
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