Oracle Parameter:archive_lag_target
今天,回顾下之前遇到的一个参数的问题【archive_lag_target】
该参数的作用是强制数据库在某个时间间隔达成的时候执行日志切换(log switch)
它的单位是秒,因此:
如果,你设置成1800,表示1800/60=30分钟
该参数的工作原理是:
如果设置了该参数,那么该参数将会定期(你设置的值)去检查当前的重做日志
1. 当前的重做日志是否包含重做记录?如果包含,则切换日志
2. 当前重做日志是几秒前被创建的(自创建以来过去了n秒)?当前日志的归档时间(归档需要m秒)?
—-> 如果n+m的时间超过了archive_lag_target的值,则切换日志
该参数的规则如下:
0,表示禁用
60 ~ 7200,为合理的取值范围,即:
通常会设置为1分钟强制切换日志,或者2小时强制切换日志
但是出于性能考虑:
1. 频繁的日志切换会带来性能问题,如果开了归档模式,频繁的日志切换,也会带来存储的压力
2. 因为归档文件是用于数据库恢复的,因此日志切换的频率的设计,在DG架构中也需要考虑:
——–> 网络承载的数据传输的压力
——–> 备库能够接受的重做数据丢失的边界
当正常的日志切换比强制日志切换的间隔更频繁,archive_lag_target的设置就很尴尬了,形同虚设
但是在日志切换不频繁,且不规律的场景中,强制日志切换就很有用了:
1. 让日志切换的频率规范
2. 保证灾难发生的时候,重做数据的丢失在可控的边界之中
一般设置为:三十分钟到一个小时之间,也就是:1800 ~ 3600
此外,特别【需要注意】的是,如果在ORACLE RAC架构中启用该参数,则每个节点都需要启用,并且必须设置成同样的值。
下面通过设置前后的日志变化,展示该参数的用法:
在DG架构中,该参数需要在主库端设置。
先看看当前归档日志产生的频率
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SQL> SELECT TO_CHAR(FIRST_TIME, 'yyyymmdd') DATETIME, COUNT(*) CNT FROM V$LOG_HISTORY GROUP BY TO_CHAR(FIRST_TIME, 'yyyymmdd') ORDER BY TO_CHAR(FIRST_TIME, 'yyyymmdd') DESC; DATETIME CNT -------- ---------- 20190322 3 20190303 1 20190302 4 20190301 3 20190228 2 20190227 4 20190226 3 20190225 2 20190224 4 20190223 5 20190222 3 DATETIME CNT -------- ---------- 20190221 2 20190220 4 20190219 3 20190218 3 20190217 4 20190216 5 20190215 2 20190214 2 20190213 4 20190212 3 20190211 2 DATETIME CNT -------- ---------- 20190210 5 20190209 5 20190208 2 20190207 3 20190206 3 20190205 3 20190204 2 20190203 5 20190202 5 20190201 2 20190131 2 DATETIME CNT -------- ---------- 20190130 4 20190129 3 20190128 3 20190127 4 20190126 5 20190125 3 20190124 2 20190123 3 20190122 3 20190121 3 20190120 4 DATETIME CNT -------- ---------- 20190119 5 20190118 3 20190117 2 20190116 3 20190115 3 20190114 2 20190113 5 20190112 5 20190111 2 20190110 3 20190109 3 DATETIME CNT -------- ---------- 20190108 3 20190107 2 20190106 5 20190105 5 20190104 2 20190103 3 20190102 3 20190101 3 20181231 2 20181230 5 20181229 4 DATETIME CNT -------- ---------- 20181228 2 20181227 3 20181226 3 20181225 3 20181224 2 20181223 4 20181222 4 20181221 2 20181220 3 20181219 1 20181218 7 DATETIME CNT -------- ---------- 20181217 2 20181216 4 20181215 4 20181214 2 20181213 14 20181212 2 20181211 1 20181210 2 20181209 4 20181208 4 20181207 1 DATETIME CNT -------- ---------- 20181206 2 20181205 1 90 rows selected. SQL> SQL> set linesize 400 SQL> col name for a65 SQL> select name,thread#,sequence#,to_char(first_time,'yyyy-mm-dd hh24:mi:ss') "First",to_char(next_time,'yyyy-mm-dd hh24:mi:ss') "Next",applied from v$archived_log,(select max(sequence#) "SEQ#" from v$archived_log where applied='YES') b where sequence# between b.seq#-5 and b.seq#+9 order by sequence#; NAME THREAD# SEQUENCE# First Next APPLIED ----------------------------------------------------------------- ---------- ---------- ------------------- ------------------- --------- /oradata/log_archive_dest_1/1_100_992771642.dbf 1 100 2018-12-18 19:15:18 2018-12-18 23:17:25 NO orclstdby 1 100 2018-12-18 19:15:18 2018-12-18 23:17:25 YES /oradata/log_archive_dest_1/1_101_992771642.dbf 1 101 2018-12-18 23:17:25 2018-12-19 21:00:45 NO orclstdby 1 101 2018-12-18 23:17:25 2018-12-19 21:00:45 YES orclstdby 1 102 2018-12-19 21:00:45 2018-12-20 00:00:01 YES /oradata/log_archive_dest_1/1_102_992771642.dbf 1 102 2018-12-19 21:00:45 2018-12-20 00:00:01 NO /oradata/log_archive_dest_1/1_103_992771642.dbf 1 103 2018-12-20 00:00:01 2018-12-20 11:23:53 NO orclstdby 1 103 2018-12-20 00:00:01 2018-12-20 11:23:53 YES /oradata/log_archive_dest_1/1_104_992771642.dbf 1 104 2018-12-20 11:23:53 2018-12-20 23:04:22 NO orclstdby 1 104 2018-12-20 11:23:53 2018-12-20 23:04:22 NO /oradata/log_archive_dest_1/1_105_992771642.dbf 1 105 2018-12-20 23:04:22 2018-12-21 11:00:24 NO NAME THREAD# SEQUENCE# First Next APPLIED ----------------------------------------------------------------- ---------- ---------- ------------------- ------------------- --------- orclstdby 1 105 2018-12-20 23:04:22 2018-12-21 11:00:24 NO orclstdby 1 106 2018-12-21 11:00:24 2018-12-21 23:06:29 NO /oradata/log_archive_dest_1/1_106_992771642.dbf 1 106 2018-12-21 11:00:24 2018-12-21 23:06:29 NO /oradata/log_archive_dest_1/1_107_992771642.dbf 1 107 2018-12-21 23:06:29 2018-12-22 07:07:20 NO orclstdby 1 107 2018-12-21 23:06:29 2018-12-22 07:07:20 NO /oradata/log_archive_dest_1/1_108_992771642.dbf 1 108 2018-12-22 07:07:20 2018-12-22 13:00:20 NO orclstdby 1 108 2018-12-22 07:07:20 2018-12-22 13:00:20 NO /oradata/log_archive_dest_1/1_109_992771642.dbf 1 109 2018-12-22 13:00:20 2018-12-22 18:38:33 NO orclstdby 1 109 2018-12-22 13:00:20 2018-12-22 18:38:33 NO /oradata/log_archive_dest_1/1_110_992771642.dbf 1 110 2018-12-22 18:38:33 2018-12-22 22:33:24 NO orclstdby 1 110 2018-12-22 18:38:33 2018-12-22 22:33:24 NO NAME THREAD# SEQUENCE# First Next APPLIED ----------------------------------------------------------------- ---------- ---------- ------------------- ------------------- --------- orclstdby 1 111 2018-12-22 22:33:24 2018-12-23 01:18:19 NO /oradata/log_archive_dest_1/1_111_992771642.dbf 1 111 2018-12-22 22:33:24 2018-12-23 01:18:19 NO orclstdby 1 112 2018-12-23 01:18:19 2018-12-23 10:00:10 NO /oradata/log_archive_dest_1/1_112_992771642.dbf 1 112 2018-12-23 01:18:19 2018-12-23 10:00:10 NO 26 rows selected. SQL> SQL> !ls -ltr /oradata/log_archive_dest_1/ total 52715815 -rw-r----- 1 oracle oinstall 105334784 Nov 21 14:32 1_2_992771642.dbf -rw-r----- 1 oracle oinstall 438272 Nov 21 14:47 1_3_992771642.dbf -rw-r----- 1 oracle oinstall 10285056 Nov 21 16:35 1_4_992771642.dbf -rw-r----- 1 oracle oinstall 3072 Nov 21 16:35 1_5_992771642.dbf -rw-r----- 1 oracle oinstall 5241344 Nov 21 17:10 1_6_992771642.dbf -rw-r----- 1 oracle oinstall 55296 Nov 21 17:11 1_7_992771642.dbf -rw-r----- 1 oracle oinstall 1019904 Nov 21 17:41 1_8_992771642.dbf -rw-r----- 1 oracle oinstall 3072 Nov 21 17:42 1_9_992771642.dbf -rw-r----- 1 oracle oinstall 3072 Nov 21 17:42 1_10_992771642.dbf -rw-r----- 1 oracle oinstall 268288 Nov 21 17:50 1_11_992771642.dbf -rw-r----- 1 oracle oinstall 186368 Nov 21 17:56 1_12_992771642.dbf -rw-r----- 1 oracle oinstall 2048 Nov 21 17:56 1_13_992771642.dbf -rw-r----- 1 oracle oinstall 3584 Nov 21 17:56 1_14_992771642.dbf -rw-r----- 1 oracle oinstall 1536 Nov 21 17:56 1_15_992771642.dbf 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Dec 2 08:11 1_44_992771642.dbf -rw-r----- 1 oracle oinstall 180701184 Dec 2 12:08 1_45_992771642.dbf -rw-r----- 1 oracle oinstall 179445760 Dec 2 18:09 1_46_992771642.dbf -rw-r----- 1 oracle oinstall 175814144 Dec 3 01:44 1_47_992771642.dbf -rw-r----- 1 oracle oinstall 178373632 Dec 3 22:01 1_48_992771642.dbf -rw-r----- 1 oracle oinstall 180247040 Dec 4 08:12 1_49_992771642.dbf -rw-r----- 1 oracle oinstall 178464256 Dec 4 23:22 1_50_992771642.dbf -rw-r----- 1 oracle oinstall 175814144 Dec 5 16:54 1_51_992771642.dbf -rw-r----- 1 oracle oinstall 177564672 Dec 6 04:00 1_52_992771642.dbf -rw-r----- 1 oracle oinstall 177568768 Dec 6 22:02 1_53_992771642.dbf -rw-r----- 1 oracle oinstall 176631296 Dec 7 09:00 1_54_992771642.dbf -rw-r----- 1 oracle oinstall 175836672 Dec 8 00:01 1_55_992771642.dbf -rw-r----- 1 oracle oinstall 177741824 Dec 8 08:25 1_56_992771642.dbf -rw-r----- 1 oracle oinstall 177000960 Dec 8 13:13 1_57_992771642.dbf -rw-r----- 1 oracle oinstall 176302592 Dec 8 20:01 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1_101_992771642.dbf -rw-r----- 1 oracle oinstall 176601600 Dec 20 00:00 1_102_992771642.dbf -rw-r----- 1 oracle oinstall 106213376 Dec 20 11:23 1_103_992771642.dbf -rw-r----- 1 oracle oinstall 176162304 Dec 20 23:04 1_104_992771642.dbf -rw-r----- 1 oracle oinstall 177144832 Dec 21 11:00 1_105_992771642.dbf -rw-r----- 1 oracle oinstall 176621568 Dec 21 23:06 1_106_992771642.dbf -rw-r----- 1 oracle oinstall 178878976 Dec 22 07:07 1_107_992771642.dbf -rw-r----- 1 oracle oinstall 178438656 Dec 22 13:00 1_108_992771642.dbf -rw-r----- 1 oracle oinstall 176216064 Dec 22 18:38 1_109_992771642.dbf -rw-r----- 1 oracle oinstall 182556672 Dec 22 22:33 1_110_992771642.dbf -rw-r----- 1 oracle oinstall 175813632 Dec 23 01:18 1_111_992771642.dbf -rw-r----- 1 oracle oinstall 175813632 Dec 23 10:00 1_112_992771642.dbf -rw-r----- 1 oracle oinstall 177107456 Dec 23 16:01 1_113_992771642.dbf -rw-r----- 1 oracle oinstall 178686464 Dec 23 21:31 1_114_992771642.dbf -rw-r----- 1 oracle oinstall 179647488 Dec 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176460288 Dec 29 08:36 1_129_992771642.dbf -rw-r----- 1 oracle oinstall 175813120 Dec 29 14:34 1_130_992771642.dbf -rw-r----- 1 oracle oinstall 177575424 Dec 29 20:07 1_131_992771642.dbf -rw-r----- 1 oracle oinstall 180333056 Dec 30 00:08 1_132_992771642.dbf -rw-r----- 1 oracle oinstall 175941632 Dec 30 06:01 1_133_992771642.dbf -rw-r----- 1 oracle oinstall 176779264 Dec 30 09:49 1_134_992771642.dbf -rw-r----- 1 oracle oinstall 176104448 Dec 30 15:49 1_135_992771642.dbf -rw-r----- 1 oracle oinstall 175815168 Dec 30 21:21 1_136_992771642.dbf -rw-r----- 1 oracle oinstall 178116608 Dec 31 01:21 1_137_992771642.dbf -rw-r----- 1 oracle oinstall 176422912 Dec 31 22:00 1_138_992771642.dbf -rw-r----- 1 oracle oinstall 179770368 Jan 1 00:43 1_139_992771642.dbf -rw-r----- 1 oracle oinstall 189076992 Jan 1 11:24 1_140_992771642.dbf -rw-r----- 1 oracle oinstall 178371072 Jan 1 22:00 1_141_992771642.dbf -rw-r----- 1 oracle oinstall 176559616 Jan 2 00:56 1_142_992771642.dbf -rw-r----- 1 oracle oinstall 202778112 Jan 2 11:24 1_143_992771642.dbf -rw-r----- 1 oracle oinstall 177313792 Jan 2 22:01 1_144_992771642.dbf -rw-r----- 1 oracle oinstall 176505344 Jan 3 01:18 1_145_992771642.dbf -rw-r----- 1 oracle oinstall 176797184 Jan 3 22:01 1_146_992771642.dbf -rw-r----- 1 oracle oinstall 184050688 Jan 3 23:02 1_147_992771642.dbf -rw-r----- 1 oracle oinstall 177007616 Jan 4 13:00 1_148_992771642.dbf -rw-r----- 1 oracle oinstall 176685056 Jan 4 23:03 1_149_992771642.dbf -rw-r----- 1 oracle oinstall 179185152 Jan 5 01:24 1_150_992771642.dbf -rw-r----- 1 oracle oinstall 181284864 Jan 5 09:55 1_151_992771642.dbf -rw-r----- 1 oracle oinstall 175813632 Jan 5 16:05 1_152_992771642.dbf -rw-r----- 1 oracle oinstall 176043520 Jan 5 20:16 1_153_992771642.dbf -rw-r----- 1 oracle oinstall 177677824 Jan 5 22:17 1_154_992771642.dbf -rw-r----- 1 oracle oinstall 175817216 Jan 6 05:25 1_155_992771642.dbf -rw-r----- 1 oracle oinstall 177888768 Jan 6 11:08 1_156_992771642.dbf -rw-r----- 1 oracle oinstall 178723840 Jan 6 17:08 1_157_992771642.dbf -rw-r----- 1 oracle oinstall 178801664 Jan 6 22:08 1_158_992771642.dbf -rw-r----- 1 oracle oinstall 178409984 Jan 6 23:49 1_159_992771642.dbf -rw-r----- 1 oracle oinstall 177604608 Jan 7 16:00 1_160_992771642.dbf -rw-r----- 1 oracle oinstall 180880384 Jan 7 23:02 1_161_992771642.dbf -rw-r----- 1 oracle oinstall 177091072 Jan 8 04:00 1_162_992771642.dbf -rw-r----- 1 oracle oinstall 192369152 Jan 8 17:24 1_163_992771642.dbf -rw-r----- 1 oracle oinstall 200784896 Jan 8 22:09 1_164_992771642.dbf -rw-r----- 1 oracle oinstall 175819776 Jan 9 01:33 1_165_992771642.dbf -rw-r----- 1 oracle oinstall 178708992 Jan 9 16:00 1_166_992771642.dbf -rw-r----- 1 oracle oinstall 176063488 Jan 9 22:11 1_167_992771642.dbf -rw-r----- 1 oracle oinstall 175990784 Jan 10 00:00 1_168_992771642.dbf -rw-r----- 1 oracle oinstall 177771520 Jan 10 19:00 1_169_992771642.dbf -rw-r----- 1 oracle oinstall 182344704 Jan 10 23:02 1_170_992771642.dbf -rw-r----- 1 oracle oinstall 177532928 Jan 11 10:00 1_171_992771642.dbf -rw-r----- 1 oracle oinstall 175813120 Jan 11 22:35 1_172_992771642.dbf -rw-r----- 1 oracle oinstall 179071488 Jan 12 01:00 1_173_992771642.dbf -rw-r----- 1 oracle oinstall 176127488 Jan 12 09:35 1_174_992771642.dbf -rw-r----- 1 oracle oinstall 175813632 Jan 12 15:27 1_175_992771642.dbf -rw-r----- 1 oracle oinstall 176565248 Jan 12 20:00 1_176_992771642.dbf -rw-r----- 1 oracle oinstall 176607232 Jan 12 22:18 1_177_992771642.dbf -rw-r----- 1 oracle oinstall 175813120 Jan 13 02:10 1_178_992771642.dbf -rw-r----- 1 oracle oinstall 178328064 Jan 13 10:29 1_179_992771642.dbf -rw-r----- 1 oracle oinstall 176556544 Jan 13 16:09 1_180_992771642.dbf -rw-r----- 1 oracle oinstall 176263680 Jan 13 21:30 1_181_992771642.dbf -rw-r----- 1 oracle oinstall 180283904 Jan 13 23:10 1_182_992771642.dbf -rw-r----- 1 oracle oinstall 176133120 Jan 14 08:01 1_183_992771642.dbf -rw-r----- 1 oracle oinstall 179044864 Jan 14 23:03 1_184_992771642.dbf -rw-r----- 1 oracle oinstall 202976768 Jan 15 08:12 1_185_992771642.dbf -rw-r----- 1 oracle oinstall 181625856 Jan 15 17:25 1_186_992771642.dbf -rw-r----- 1 oracle oinstall 177698816 Jan 15 23:05 1_187_992771642.dbf -rw-r----- 1 oracle oinstall 176784384 Jan 16 05:00 1_188_992771642.dbf -rw-r----- 1 oracle oinstall 186448896 Jan 16 17:25 1_189_992771642.dbf -rw-r----- 1 oracle oinstall 181045760 Jan 16 22:02 1_190_992771642.dbf -rw-r----- 1 oracle oinstall 178026496 Jan 17 04:00 1_191_992771642.dbf -rw-r----- 1 oracle oinstall 177393152 Jan 17 22:01 1_192_992771642.dbf -rw-r----- 1 oracle oinstall 176030208 Jan 18 01:01 1_193_992771642.dbf -rw-r----- 1 oracle oinstall 175813120 Jan 18 16:43 1_194_992771642.dbf -rw-r----- 1 oracle oinstall 181893120 Jan 18 23:24 1_195_992771642.dbf -rw-r----- 1 oracle oinstall 176621056 Jan 19 07:05 1_196_992771642.dbf -rw-r----- 1 oracle oinstall 175814144 Jan 19 10:12 1_197_992771642.dbf -rw-r----- 1 oracle oinstall 177470976 Jan 19 15:06 1_198_992771642.dbf -rw-r----- 1 oracle oinstall 177540096 Jan 19 20:17 1_199_992771642.dbf -rw-r----- 1 oracle oinstall 176199680 Jan 19 23:48 1_200_992771642.dbf -rw-r----- 1 oracle oinstall 175991808 Jan 20 07:18 1_201_992771642.dbf -rw-r----- 1 oracle oinstall 178775552 Jan 20 10:49 1_202_992771642.dbf -rw-r----- 1 oracle oinstall 176985600 Jan 20 15:39 1_203_992771642.dbf -rw-r----- 1 oracle oinstall 176445952 Jan 20 21:20 1_204_992771642.dbf -rw-r----- 1 oracle oinstall 175813120 Jan 21 00:53 1_205_992771642.dbf -rw-r----- 1 oracle oinstall 175821312 Jan 21 17:31 1_206_992771642.dbf -rw-r----- 1 oracle oinstall 177036800 Jan 21 23:23 1_207_992771642.dbf -rw-r----- 1 oracle oinstall 177977344 Jan 22 08:16 1_208_992771642.dbf -rw-r----- 1 oracle oinstall 179429376 Jan 22 17:26 1_209_992771642.dbf -rw-r----- 1 oracle oinstall 187099648 Jan 22 23:06 1_210_992771642.dbf -rw-r----- 1 oracle oinstall 182007808 Jan 23 08:17 1_211_992771642.dbf -rw-r----- 1 oracle oinstall 184905216 Jan 23 17:26 1_212_992771642.dbf -rw-r----- 1 oracle oinstall 178270720 Jan 23 23:09 1_213_992771642.dbf -rw-r----- 1 oracle oinstall 178601984 Jan 24 08:00 1_214_992771642.dbf -rw-r----- 1 oracle oinstall 176825344 Jan 24 22:01 1_215_992771642.dbf -rw-r----- 1 oracle oinstall 178746368 Jan 25 02:00 1_216_992771642.dbf -rw-r----- 1 oracle oinstall 177389056 Jan 25 22:01 1_217_992771642.dbf -rw-r----- 1 oracle oinstall 178112512 Jan 25 23:15 1_218_992771642.dbf -rw-r----- 1 oracle oinstall 178309632 Jan 26 07:06 1_219_992771642.dbf -rw-r----- 1 oracle oinstall 175838208 Jan 26 12:26 1_220_992771642.dbf -rw-r----- 1 oracle oinstall 175953408 Jan 26 17:47 1_221_992771642.dbf -rw-r----- 1 oracle oinstall 177292800 Jan 26 22:08 1_222_992771642.dbf -rw-r----- 1 oracle oinstall 175870464 Jan 26 23:38 1_223_992771642.dbf -rw-r----- 1 oracle oinstall 175990272 Jan 27 07:01 1_224_992771642.dbf -rw-r----- 1 oracle oinstall 181075968 Jan 27 12:10 1_225_992771642.dbf -rw-r----- 1 oracle oinstall 176170496 Jan 27 18:00 1_226_992771642.dbf -rw-r----- 1 oracle oinstall 176523776 Jan 27 22:19 1_227_992771642.dbf -rw-r----- 1 oracle oinstall 175876608 Jan 28 00:31 1_228_992771642.dbf -rw-r----- 1 oracle oinstall 176024576 Jan 28 22:00 1_229_992771642.dbf -rw-r----- 1 oracle oinstall 182910464 Jan 28 23:04 1_230_992771642.dbf -rw-r----- 1 oracle oinstall 175813120 Jan 29 11:21 1_231_992771642.dbf -rw-r----- 1 oracle oinstall 177299968 Jan 29 17:27 1_232_992771642.dbf -rw-r----- 1 oracle oinstall 176756736 Jan 29 22:20 1_233_992771642.dbf -rw-r----- 1 oracle oinstall 176507392 Jan 30 01:17 1_234_992771642.dbf -rw-r----- 1 oracle oinstall 176946176 Jan 30 14:00 1_235_992771642.dbf -rw-r----- 1 oracle oinstall 183693824 Jan 30 22:02 1_236_992771642.dbf -rw-r----- 1 oracle oinstall 176313344 Jan 30 23:49 1_237_992771642.dbf -rw-r----- 1 oracle oinstall 175813120 Jan 31 17:10 1_238_992771642.dbf -rw-r----- 1 oracle oinstall 177649152 Jan 31 23:02 1_239_992771642.dbf -rw-r----- 1 oracle oinstall 178201088 Feb 1 06:00 1_240_992771642.dbf -rw-r----- 1 oracle oinstall 178137600 Feb 1 22:21 1_241_992771642.dbf -rw-r----- 1 oracle oinstall 176506368 Feb 2 00:35 1_242_992771642.dbf -rw-r----- 1 oracle oinstall 177292288 Feb 2 09:06 1_243_992771642.dbf -rw-r----- 1 oracle oinstall 180101120 Feb 2 14:17 1_244_992771642.dbf -rw-r----- 1 oracle oinstall 176016896 Feb 2 19:48 1_245_992771642.dbf -rw-r----- 1 oracle oinstall 177455616 Feb 2 22:28 1_246_992771642.dbf -rw-r----- 1 oracle oinstall 175814144 Feb 3 04:26 1_247_992771642.dbf -rw-r----- 1 oracle oinstall 175943168 Feb 3 11:06 1_248_992771642.dbf -rw-r----- 1 oracle oinstall 175814144 Feb 3 16:59 1_249_992771642.dbf -rw-r----- 1 oracle oinstall 177987584 Feb 3 22:00 1_250_992771642.dbf -rw-r----- 1 oracle oinstall 187936256 Feb 3 23:11 1_251_992771642.dbf -rw-r----- 1 oracle oinstall 175813120 Feb 4 14:43 1_252_992771642.dbf -rw-r----- 1 oracle oinstall 177352192 Feb 4 23:14 1_253_992771642.dbf -rw-r----- 1 oracle oinstall 177464320 Feb 5 08:24 1_254_992771642.dbf -rw-r----- 1 oracle oinstall 188754944 Feb 5 17:28 1_255_992771642.dbf -rw-r----- 1 oracle oinstall 176729088 Feb 5 22:09 1_256_992771642.dbf -rw-r----- 1 oracle oinstall 176043008 Feb 6 01:38 1_257_992771642.dbf -rw-r----- 1 oracle oinstall 178399744 Feb 6 12:00 1_258_992771642.dbf -rw-r----- 1 oracle oinstall 176288256 Feb 6 22:03 1_259_992771642.dbf -rw-r----- 1 oracle oinstall 176474112 Feb 7 00:21 1_260_992771642.dbf -rw-r----- 1 oracle oinstall 176778240 Feb 7 13:00 1_261_992771642.dbf -rw-r----- 1 oracle oinstall 180712448 Feb 7 23:04 1_262_992771642.dbf -rw-r----- 1 oracle oinstall 177499648 Feb 8 08:26 1_263_992771642.dbf -rw-r----- 1 oracle oinstall 179896320 Feb 8 22:01 1_264_992771642.dbf -rw-r----- 1 oracle oinstall 177481728 Feb 9 01:07 1_265_992771642.dbf -rw-r----- 1 oracle oinstall 179396608 Feb 9 08:28 1_266_992771642.dbf -rw-r----- 1 oracle oinstall 176120320 Feb 9 12:49 1_267_992771642.dbf -rw-r----- 1 oracle oinstall 176122880 Feb 9 18:00 1_268_992771642.dbf -rw-r----- 1 oracle oinstall 183685632 Feb 9 23:10 1_269_992771642.dbf -rw-r----- 1 oracle oinstall 176069120 Feb 10 06:00 1_270_992771642.dbf -rw-r----- 1 oracle oinstall 177798656 Feb 10 08:32 1_271_992771642.dbf -rw-r----- 1 oracle oinstall 177345536 Feb 10 12:12 1_272_992771642.dbf -rw-r----- 1 oracle oinstall 176522752 Feb 10 17:53 1_273_992771642.dbf -rw-r----- 1 oracle oinstall 177698304 Feb 10 23:00 1_274_992771642.dbf -rw-r----- 1 oracle oinstall 177043968 Feb 11 07:00 1_275_992771642.dbf -rw-r----- 1 oracle oinstall 177119232 Feb 11 22:01 1_276_992771642.dbf -rw-r----- 1 oracle oinstall 176230912 Feb 12 00:36 1_277_992771642.dbf -rw-r----- 1 oracle oinstall 194692096 Feb 12 11:28 1_278_992771642.dbf -rw-r----- 1 oracle oinstall 176070656 Feb 12 22:01 1_279_992771642.dbf -rw-r----- 1 oracle oinstall 175893504 Feb 13 00:10 1_280_992771642.dbf -rw-r----- 1 oracle oinstall 202976768 Feb 13 11:28 1_281_992771642.dbf -rw-r----- 1 oracle oinstall 177244672 Feb 13 22:00 1_282_992771642.dbf -rw-r----- 1 oracle oinstall 175853568 Feb 13 23:07 1_283_992771642.dbf -rw-r----- 1 oracle oinstall 177996288 Feb 14 08:01 1_284_992771642.dbf -rw-r----- 1 oracle oinstall 178780160 Feb 14 23:00 1_285_992771642.dbf -rw-r----- 1 oracle oinstall 175817216 Feb 15 13:06 1_286_992771642.dbf -rw-r----- 1 oracle oinstall 177756160 Feb 15 22:01 1_287_992771642.dbf -rw-r----- 1 oracle oinstall 177152512 Feb 16 00:48 1_288_992771642.dbf -rw-r----- 1 oracle oinstall 176197632 Feb 16 09:50 1_289_992771642.dbf -rw-r----- 1 oracle oinstall 176781824 Feb 16 15:51 1_290_992771642.dbf -rw-r----- 1 oracle oinstall 176480768 Feb 16 21:21 1_291_992771642.dbf -rw-r----- 1 oracle oinstall 176410624 Feb 16 23:11 1_292_992771642.dbf -rw-r----- 1 oracle oinstall 177993728 Feb 17 07:03 1_293_992771642.dbf -rw-r----- 1 oracle oinstall 175872000 Feb 17 12:43 1_294_992771642.dbf -rw-r----- 1 oracle oinstall 175813120 Feb 17 18:07 1_295_992771642.dbf -rw-r----- 1 oracle oinstall 176017920 Feb 17 22:02 1_296_992771642.dbf -rw-r----- 1 oracle oinstall 176458240 Feb 18 00:15 1_297_992771642.dbf -rw-r----- 1 oracle oinstall 178397696 Feb 18 20:00 1_298_992771642.dbf -rw-r----- 1 oracle oinstall 180044800 Feb 18 23:08 1_299_992771642.dbf -rw-r----- 1 oracle oinstall 175814144 Feb 19 04:17 1_300_992771642.dbf -rw-r----- 1 oracle oinstall 190871040 Feb 19 17:29 1_301_992771642.dbf -rw-r----- 1 oracle oinstall 179464192 Feb 19 22:04 1_302_992771642.dbf -rw-r----- 1 oracle oinstall 176532480 Feb 20 00:21 1_303_992771642.dbf -rw-r----- 1 oracle oinstall 191911424 Feb 20 11:29 1_304_992771642.dbf -rw-r----- 1 oracle oinstall 176420864 Feb 20 22:00 1_305_992771642.dbf -rw-r----- 1 oracle oinstall 176550400 Feb 20 23:05 1_306_992771642.dbf -rw-r----- 1 oracle oinstall 175814144 Feb 21 04:23 1_307_992771642.dbf -rw-r----- 1 oracle oinstall 180002304 Feb 21 22:01 1_308_992771642.dbf -rw-r----- 1 oracle oinstall 176587776 Feb 22 00:17 1_309_992771642.dbf -rw-r----- 1 oracle oinstall 177245184 Feb 22 21:00 1_310_992771642.dbf -rw-r----- 1 oracle oinstall 185168384 Feb 22 23:11 1_311_992771642.dbf -rw-r----- 1 oracle oinstall 178787840 Feb 23 07:01 1_312_992771642.dbf -rw-r----- 1 oracle oinstall 178324992 Feb 23 12:42 1_313_992771642.dbf -rw-r----- 1 oracle oinstall 176329728 Feb 23 17:03 1_314_992771642.dbf -rw-r----- 1 oracle oinstall 180076544 Feb 23 22:04 1_315_992771642.dbf -rw-r----- 1 oracle oinstall 175884800 Feb 23 23:54 1_316_992771642.dbf -rw-r----- 1 oracle oinstall 175925248 Feb 24 07:25 1_317_992771642.dbf -rw-r----- 1 oracle oinstall 181696000 Feb 24 13:46 1_318_992771642.dbf -rw-r----- 1 oracle oinstall 177610752 Feb 24 18:46 1_319_992771642.dbf -rw-r----- 1 oracle oinstall 175846400 Feb 24 23:26 1_320_992771642.dbf -rw-r----- 1 oracle oinstall 177229824 Feb 25 08:08 1_321_992771642.dbf -rw-r----- 1 oracle oinstall 186318848 Feb 25 22:02 1_322_992771642.dbf -rw-r----- 1 oracle oinstall 180386304 Feb 26 01:40 1_323_992771642.dbf -rw-r----- 1 oracle oinstall 177607680 Feb 26 14:00 1_324_992771642.dbf -rw-r----- 1 oracle oinstall 178138112 Feb 26 22:02 1_325_992771642.dbf -rw-r----- 1 oracle oinstall 181209088 Feb 27 00:13 1_326_992771642.dbf -rw-r----- 1 oracle oinstall 175864832 Feb 27 08:15 1_327_992771642.dbf -rw-r----- 1 oracle oinstall 175826432 Feb 27 17:34 1_328_992771642.dbf -rw-r----- 1 oracle oinstall 176410624 Feb 27 23:12 1_329_992771642.dbf -rw-r----- 1 oracle oinstall 178289664 Feb 28 07:00 1_330_992771642.dbf -rw-r----- 1 oracle oinstall 176430592 Feb 28 22:02 1_331_992771642.dbf -rw-r----- 1 oracle oinstall 176887808 Mar 1 01:11 1_332_992771642.dbf -rw-r----- 1 oracle oinstall 177972736 Mar 1 21:00 1_333_992771642.dbf -rw-r----- 1 oracle oinstall 176437248 Mar 1 23:24 1_334_992771642.dbf -rw-r----- 1 oracle oinstall 178960896 Mar 2 08:05 1_335_992771642.dbf -rw-r----- 1 oracle oinstall 176731648 Mar 2 10:15 1_336_992771642.dbf -rw-r----- 1 oracle oinstall 177239552 Mar 2 16:00 1_337_992771642.dbf -rw-r----- 1 oracle oinstall 175970304 Mar 2 21:56 1_338_992771642.dbf -rw-r----- 1 oracle oinstall 177001984 Mar 3 01:18 1_339_992771642.dbf -rw-r----- 1 oracle oinstall 13046272 Mar 22 21:36 1_340_992771642.dbf -rw-r----- 1 oracle oinstall 179110400 Mar 22 21:53 1_341_992771642.dbf SQL> SQL> alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss'; Session altered. SQL> col name for a60 SQL> select name,COMPLETION_TIME from v$archived_log where name is not null; NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- orclstdby 2018-12-18 19:30:32 orclstdby 2018-12-18 19:30:34 orclstdby 2018-12-18 19:30:40 orclstdby 2018-12-18 19:30:41 orclstdby 2018-12-18 19:30:45 orclstdby 2018-12-18 19:30:45 orclstdby 2018-12-18 19:30:46 orclstdby 2018-12-18 23:17:27 /oradata/log_archive_dest_1/1_100_992771642.dbf 2018-12-18 23:17:29 /oradata/log_archive_dest_1/1_101_992771642.dbf 2018-12-19 21:00:48 /oradata/log_archive_dest_1/1_102_992771642.dbf 2018-12-20 00:00:04 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_103_992771642.dbf 2018-12-20 11:23:55 orclstdby 2018-12-20 11:30:26 orclstdby 2018-12-20 11:30:26 /oradata/log_archive_dest_1/1_104_992771642.dbf 2018-12-20 23:04:32 /oradata/log_archive_dest_1/1_105_992771642.dbf 2018-12-21 11:00:26 /oradata/log_archive_dest_1/1_106_992771642.dbf 2018-12-21 23:06:36 /oradata/log_archive_dest_1/1_107_992771642.dbf 2018-12-22 07:07:26 /oradata/log_archive_dest_1/1_108_992771642.dbf 2018-12-22 13:00:29 /oradata/log_archive_dest_1/1_109_992771642.dbf 2018-12-22 18:38:38 /oradata/log_archive_dest_1/1_110_992771642.dbf 2018-12-22 22:33:29 /oradata/log_archive_dest_1/1_111_992771642.dbf 2018-12-23 01:18:31 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_112_992771642.dbf 2018-12-23 10:00:17 /oradata/log_archive_dest_1/1_113_992771642.dbf 2018-12-23 16:01:14 /oradata/log_archive_dest_1/1_114_992771642.dbf 2018-12-23 21:31:53 /oradata/log_archive_dest_1/1_115_992771642.dbf 2018-12-24 01:22:14 /oradata/log_archive_dest_1/1_116_992771642.dbf 2018-12-24 18:44:00 /oradata/log_archive_dest_1/1_117_992771642.dbf 2018-12-25 00:34:50 /oradata/log_archive_dest_1/1_118_992771642.dbf 2018-12-25 11:23:25 /oradata/log_archive_dest_1/1_119_992771642.dbf 2018-12-25 22:00:44 /oradata/log_archive_dest_1/1_120_992771642.dbf 2018-12-26 00:00:56 /oradata/log_archive_dest_1/1_121_992771642.dbf 2018-12-26 11:23:30 /oradata/log_archive_dest_1/1_122_992771642.dbf 2018-12-26 22:00:38 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_123_992771642.dbf 2018-12-27 00:00:37 /oradata/log_archive_dest_1/1_124_992771642.dbf 2018-12-27 08:05:03 /oradata/log_archive_dest_1/1_125_992771642.dbf 2018-12-27 22:02:04 /oradata/log_archive_dest_1/1_126_992771642.dbf 2018-12-28 08:05:17 /oradata/log_archive_dest_1/1_127_992771642.dbf 2018-12-28 22:01:54 /oradata/log_archive_dest_1/1_128_992771642.dbf 2018-12-29 06:00:37 /oradata/log_archive_dest_1/1_129_992771642.dbf 2018-12-29 08:36:22 /oradata/log_archive_dest_1/1_130_992771642.dbf 2018-12-29 14:34:49 /oradata/log_archive_dest_1/1_131_992771642.dbf 2018-12-29 20:07:59 /oradata/log_archive_dest_1/1_132_992771642.dbf 2018-12-30 00:08:14 /oradata/log_archive_dest_1/1_133_992771642.dbf 2018-12-30 06:01:32 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_134_992771642.dbf 2018-12-30 09:49:18 /oradata/log_archive_dest_1/1_135_992771642.dbf 2018-12-30 15:50:00 /oradata/log_archive_dest_1/1_136_992771642.dbf 2018-12-30 21:21:27 /oradata/log_archive_dest_1/1_137_992771642.dbf 2018-12-31 01:21:33 /oradata/log_archive_dest_1/1_138_992771642.dbf 2018-12-31 22:00:12 /oradata/log_archive_dest_1/1_139_992771642.dbf 2019-01-01 00:43:41 /oradata/log_archive_dest_1/1_140_992771642.dbf 2019-01-01 11:24:10 /oradata/log_archive_dest_1/1_141_992771642.dbf 2019-01-01 22:00:59 /oradata/log_archive_dest_1/1_142_992771642.dbf 2019-01-02 00:56:13 /oradata/log_archive_dest_1/1_143_992771642.dbf 2019-01-02 11:24:17 /oradata/log_archive_dest_1/1_144_992771642.dbf 2019-01-02 22:01:06 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_145_992771642.dbf 2019-01-03 01:18:52 /oradata/log_archive_dest_1/1_146_992771642.dbf 2019-01-03 22:01:04 /oradata/log_archive_dest_1/1_147_992771642.dbf 2019-01-03 23:02:19 /oradata/log_archive_dest_1/1_148_992771642.dbf 2019-01-04 13:00:32 /oradata/log_archive_dest_1/1_149_992771642.dbf 2019-01-04 23:03:59 /oradata/log_archive_dest_1/1_150_992771642.dbf 2019-01-05 01:24:14 /oradata/log_archive_dest_1/1_151_992771642.dbf 2019-01-05 09:55:09 /oradata/log_archive_dest_1/1_152_992771642.dbf 2019-01-05 16:05:13 /oradata/log_archive_dest_1/1_153_992771642.dbf 2019-01-05 20:16:20 /oradata/log_archive_dest_1/1_154_992771642.dbf 2019-01-05 22:17:13 /oradata/log_archive_dest_1/1_155_992771642.dbf 2019-01-06 05:25:09 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_156_992771642.dbf 2019-01-06 11:08:06 /oradata/log_archive_dest_1/1_157_992771642.dbf 2019-01-06 17:08:49 /oradata/log_archive_dest_1/1_158_992771642.dbf 2019-01-06 22:08:56 /oradata/log_archive_dest_1/1_159_992771642.dbf 2019-01-06 23:49:35 /oradata/log_archive_dest_1/1_160_992771642.dbf 2019-01-07 16:00:11 /oradata/log_archive_dest_1/1_161_992771642.dbf 2019-01-07 23:02:19 /oradata/log_archive_dest_1/1_162_992771642.dbf 2019-01-08 04:00:34 /oradata/log_archive_dest_1/1_163_992771642.dbf 2019-01-08 17:24:58 /oradata/log_archive_dest_1/1_164_992771642.dbf 2019-01-08 22:09:41 /oradata/log_archive_dest_1/1_165_992771642.dbf 2019-01-09 01:33:03 /oradata/log_archive_dest_1/1_166_992771642.dbf 2019-01-09 16:00:42 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_167_992771642.dbf 2019-01-09 22:11:07 /oradata/log_archive_dest_1/1_168_992771642.dbf 2019-01-10 00:00:52 /oradata/log_archive_dest_1/1_169_992771642.dbf 2019-01-10 19:00:56 /oradata/log_archive_dest_1/1_170_992771642.dbf 2019-01-10 23:02:37 /oradata/log_archive_dest_1/1_171_992771642.dbf 2019-01-11 10:00:45 /oradata/log_archive_dest_1/1_172_992771642.dbf 2019-01-11 22:35:26 /oradata/log_archive_dest_1/1_173_992771642.dbf 2019-01-12 01:00:32 /oradata/log_archive_dest_1/1_174_992771642.dbf 2019-01-12 09:35:58 /oradata/log_archive_dest_1/1_175_992771642.dbf 2019-01-12 15:27:23 /oradata/log_archive_dest_1/1_176_992771642.dbf 2019-01-12 20:00:50 /oradata/log_archive_dest_1/1_177_992771642.dbf 2019-01-12 22:18:20 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_178_992771642.dbf 2019-01-13 02:10:47 /oradata/log_archive_dest_1/1_179_992771642.dbf 2019-01-13 10:29:04 /oradata/log_archive_dest_1/1_180_992771642.dbf 2019-01-13 16:09:34 /oradata/log_archive_dest_1/1_181_992771642.dbf 2019-01-13 21:30:11 /oradata/log_archive_dest_1/1_182_992771642.dbf 2019-01-13 23:10:33 /oradata/log_archive_dest_1/1_183_992771642.dbf 2019-01-14 08:01:04 /oradata/log_archive_dest_1/1_184_992771642.dbf 2019-01-14 23:03:17 /oradata/log_archive_dest_1/1_185_992771642.dbf 2019-01-15 08:12:38 /oradata/log_archive_dest_1/1_186_992771642.dbf 2019-01-15 17:25:53 /oradata/log_archive_dest_1/1_187_992771642.dbf 2019-01-15 23:05:57 /oradata/log_archive_dest_1/1_188_992771642.dbf 2019-01-16 05:00:13 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_189_992771642.dbf 2019-01-16 17:25:56 /oradata/log_archive_dest_1/1_190_992771642.dbf 2019-01-16 22:02:20 /oradata/log_archive_dest_1/1_191_992771642.dbf 2019-01-17 04:00:51 /oradata/log_archive_dest_1/1_192_992771642.dbf 2019-01-17 22:01:06 /oradata/log_archive_dest_1/1_193_992771642.dbf 2019-01-18 01:01:40 /oradata/log_archive_dest_1/1_194_992771642.dbf 2019-01-18 16:43:19 /oradata/log_archive_dest_1/1_195_992771642.dbf 2019-01-18 23:24:38 /oradata/log_archive_dest_1/1_196_992771642.dbf 2019-01-19 07:05:30 /oradata/log_archive_dest_1/1_197_992771642.dbf 2019-01-19 10:12:18 /oradata/log_archive_dest_1/1_198_992771642.dbf 2019-01-19 15:06:50 /oradata/log_archive_dest_1/1_199_992771642.dbf 2019-01-19 20:17:24 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_200_992771642.dbf 2019-01-19 23:48:04 /oradata/log_archive_dest_1/1_201_992771642.dbf 2019-01-20 07:18:43 /oradata/log_archive_dest_1/1_202_992771642.dbf 2019-01-20 10:49:10 /oradata/log_archive_dest_1/1_203_992771642.dbf 2019-01-20 15:39:43 /oradata/log_archive_dest_1/1_204_992771642.dbf 2019-01-20 21:20:32 /oradata/log_archive_dest_1/1_205_992771642.dbf 2019-01-21 00:53:26 /oradata/log_archive_dest_1/1_206_992771642.dbf 2019-01-21 17:31:25 /oradata/log_archive_dest_1/1_207_992771642.dbf 2019-01-21 23:23:37 /oradata/log_archive_dest_1/1_208_992771642.dbf 2019-01-22 08:16:29 /oradata/log_archive_dest_1/1_209_992771642.dbf 2019-01-22 17:26:39 /oradata/log_archive_dest_1/1_210_992771642.dbf 2019-01-22 23:06:33 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_211_992771642.dbf 2019-01-23 08:17:09 /oradata/log_archive_dest_1/1_212_992771642.dbf 2019-01-23 17:26:44 /oradata/log_archive_dest_1/1_213_992771642.dbf 2019-01-23 23:09:22 /oradata/log_archive_dest_1/1_214_992771642.dbf 2019-01-24 08:00:10 /oradata/log_archive_dest_1/1_215_992771642.dbf 2019-01-24 22:01:42 /oradata/log_archive_dest_1/1_216_992771642.dbf 2019-01-25 02:00:26 /oradata/log_archive_dest_1/1_217_992771642.dbf 2019-01-25 22:01:56 /oradata/log_archive_dest_1/1_218_992771642.dbf 2019-01-25 23:15:17 /oradata/log_archive_dest_1/1_219_992771642.dbf 2019-01-26 07:06:17 /oradata/log_archive_dest_1/1_220_992771642.dbf 2019-01-26 12:26:53 /oradata/log_archive_dest_1/1_221_992771642.dbf 2019-01-26 17:47:32 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_222_992771642.dbf 2019-01-26 22:08:10 /oradata/log_archive_dest_1/1_223_992771642.dbf 2019-01-26 23:38:13 /oradata/log_archive_dest_1/1_224_992771642.dbf 2019-01-27 07:01:04 /oradata/log_archive_dest_1/1_225_992771642.dbf 2019-01-27 12:10:06 /oradata/log_archive_dest_1/1_226_992771642.dbf 2019-01-27 18:00:48 /oradata/log_archive_dest_1/1_227_992771642.dbf 2019-01-27 22:19:39 /oradata/log_archive_dest_1/1_228_992771642.dbf 2019-01-28 00:31:27 /oradata/log_archive_dest_1/1_229_992771642.dbf 2019-01-28 22:00:41 /oradata/log_archive_dest_1/1_230_992771642.dbf 2019-01-28 23:04:51 /oradata/log_archive_dest_1/1_231_992771642.dbf 2019-01-29 11:21:07 /oradata/log_archive_dest_1/1_232_992771642.dbf 2019-01-29 17:27:19 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_233_992771642.dbf 2019-01-29 22:20:50 /oradata/log_archive_dest_1/1_234_992771642.dbf 2019-01-30 01:17:18 /oradata/log_archive_dest_1/1_235_992771642.dbf 2019-01-30 14:00:58 /oradata/log_archive_dest_1/1_236_992771642.dbf 2019-01-30 22:02:41 /oradata/log_archive_dest_1/1_237_992771642.dbf 2019-01-30 23:49:53 /oradata/log_archive_dest_1/1_238_992771642.dbf 2019-01-31 17:10:18 /oradata/log_archive_dest_1/1_239_992771642.dbf 2019-01-31 23:02:59 /oradata/log_archive_dest_1/1_240_992771642.dbf 2019-02-01 06:00:48 /oradata/log_archive_dest_1/1_241_992771642.dbf 2019-02-01 22:21:52 /oradata/log_archive_dest_1/1_242_992771642.dbf 2019-02-02 00:35:38 /oradata/log_archive_dest_1/1_243_992771642.dbf 2019-02-02 09:06:45 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_244_992771642.dbf 2019-02-02 14:17:25 /oradata/log_archive_dest_1/1_245_992771642.dbf 2019-02-02 19:48:01 /oradata/log_archive_dest_1/1_246_992771642.dbf 2019-02-02 22:28:32 /oradata/log_archive_dest_1/1_247_992771642.dbf 2019-02-03 04:26:53 /oradata/log_archive_dest_1/1_248_992771642.dbf 2019-02-03 11:06:27 /oradata/log_archive_dest_1/1_249_992771642.dbf 2019-02-03 16:59:02 /oradata/log_archive_dest_1/1_250_992771642.dbf 2019-02-03 22:00:52 /oradata/log_archive_dest_1/1_251_992771642.dbf 2019-02-03 23:11:28 /oradata/log_archive_dest_1/1_252_992771642.dbf 2019-02-04 14:43:19 /oradata/log_archive_dest_1/1_253_992771642.dbf 2019-02-04 23:14:24 /oradata/log_archive_dest_1/1_254_992771642.dbf 2019-02-05 08:24:42 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_255_992771642.dbf 2019-02-05 17:28:25 /oradata/log_archive_dest_1/1_256_992771642.dbf 2019-02-05 22:09:36 /oradata/log_archive_dest_1/1_257_992771642.dbf 2019-02-06 01:38:31 /oradata/log_archive_dest_1/1_258_992771642.dbf 2019-02-06 12:00:07 /oradata/log_archive_dest_1/1_259_992771642.dbf 2019-02-06 22:03:24 /oradata/log_archive_dest_1/1_260_992771642.dbf 2019-02-07 00:21:20 /oradata/log_archive_dest_1/1_261_992771642.dbf 2019-02-07 13:00:24 /oradata/log_archive_dest_1/1_262_992771642.dbf 2019-02-07 23:04:27 /oradata/log_archive_dest_1/1_263_992771642.dbf 2019-02-08 08:26:06 /oradata/log_archive_dest_1/1_264_992771642.dbf 2019-02-08 22:01:56 /oradata/log_archive_dest_1/1_265_992771642.dbf 2019-02-09 01:07:55 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_266_992771642.dbf 2019-02-09 08:28:52 /oradata/log_archive_dest_1/1_267_992771642.dbf 2019-02-09 12:49:23 /oradata/log_archive_dest_1/1_268_992771642.dbf 2019-02-09 18:00:14 /oradata/log_archive_dest_1/1_269_992771642.dbf 2019-02-09 23:10:43 /oradata/log_archive_dest_1/1_270_992771642.dbf 2019-02-10 06:00:39 /oradata/log_archive_dest_1/1_271_992771642.dbf 2019-02-10 08:32:43 /oradata/log_archive_dest_1/1_272_992771642.dbf 2019-02-10 12:12:35 /oradata/log_archive_dest_1/1_273_992771642.dbf 2019-02-10 17:53:09 /oradata/log_archive_dest_1/1_274_992771642.dbf 2019-02-10 23:00:19 /oradata/log_archive_dest_1/1_275_992771642.dbf 2019-02-11 07:00:20 /oradata/log_archive_dest_1/1_276_992771642.dbf 2019-02-11 22:01:39 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_277_992771642.dbf 2019-02-12 00:36:58 /oradata/log_archive_dest_1/1_278_992771642.dbf 2019-02-12 11:28:35 /oradata/log_archive_dest_1/1_279_992771642.dbf 2019-02-12 22:02:02 /oradata/log_archive_dest_1/1_280_992771642.dbf 2019-02-13 00:10:20 /oradata/log_archive_dest_1/1_281_992771642.dbf 2019-02-13 11:28:39 /oradata/log_archive_dest_1/1_282_992771642.dbf 2019-02-13 22:01:02 /oradata/log_archive_dest_1/1_283_992771642.dbf 2019-02-13 23:07:54 /oradata/log_archive_dest_1/1_284_992771642.dbf 2019-02-14 08:01:03 /oradata/log_archive_dest_1/1_285_992771642.dbf 2019-02-14 23:00:41 /oradata/log_archive_dest_1/1_286_992771642.dbf 2019-02-15 13:06:27 /oradata/log_archive_dest_1/1_287_992771642.dbf 2019-02-15 22:01:53 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_288_992771642.dbf 2019-02-16 00:48:59 /oradata/log_archive_dest_1/1_289_992771642.dbf 2019-02-16 09:50:09 /oradata/log_archive_dest_1/1_290_992771642.dbf 2019-02-16 15:51:15 /oradata/log_archive_dest_1/1_291_992771642.dbf 2019-02-16 21:21:43 /oradata/log_archive_dest_1/1_292_992771642.dbf 2019-02-16 23:11:56 /oradata/log_archive_dest_1/1_293_992771642.dbf 2019-02-17 07:03:07 /oradata/log_archive_dest_1/1_294_992771642.dbf 2019-02-17 12:43:43 /oradata/log_archive_dest_1/1_295_992771642.dbf 2019-02-17 18:07:13 /oradata/log_archive_dest_1/1_296_992771642.dbf 2019-02-17 22:02:47 /oradata/log_archive_dest_1/1_297_992771642.dbf 2019-02-18 00:15:22 /oradata/log_archive_dest_1/1_298_992771642.dbf 2019-02-18 20:00:55 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_299_992771642.dbf 2019-02-18 23:08:33 /oradata/log_archive_dest_1/1_300_992771642.dbf 2019-02-19 04:17:21 /oradata/log_archive_dest_1/1_301_992771642.dbf 2019-02-19 17:29:14 /oradata/log_archive_dest_1/1_302_992771642.dbf 2019-02-19 22:04:06 /oradata/log_archive_dest_1/1_303_992771642.dbf 2019-02-20 00:21:22 /oradata/log_archive_dest_1/1_304_992771642.dbf 2019-02-20 11:29:23 /oradata/log_archive_dest_1/1_305_992771642.dbf 2019-02-20 22:00:48 /oradata/log_archive_dest_1/1_306_992771642.dbf 2019-02-20 23:05:12 /oradata/log_archive_dest_1/1_307_992771642.dbf 2019-02-21 04:23:50 /oradata/log_archive_dest_1/1_308_992771642.dbf 2019-02-21 22:01:40 /oradata/log_archive_dest_1/1_309_992771642.dbf 2019-02-22 00:17:26 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_310_992771642.dbf 2019-02-22 21:00:50 /oradata/log_archive_dest_1/1_311_992771642.dbf 2019-02-22 23:11:50 /oradata/log_archive_dest_1/1_312_992771642.dbf 2019-02-23 07:01:04 /oradata/log_archive_dest_1/1_313_992771642.dbf 2019-02-23 12:42:50 /oradata/log_archive_dest_1/1_314_992771642.dbf 2019-02-23 17:03:26 /oradata/log_archive_dest_1/1_315_992771642.dbf 2019-02-23 22:04:19 /oradata/log_archive_dest_1/1_316_992771642.dbf 2019-02-23 23:54:17 /oradata/log_archive_dest_1/1_317_992771642.dbf 2019-02-24 07:25:12 /oradata/log_archive_dest_1/1_318_992771642.dbf 2019-02-24 13:46:11 /oradata/log_archive_dest_1/1_319_992771642.dbf 2019-02-24 18:46:53 /oradata/log_archive_dest_1/1_320_992771642.dbf 2019-02-24 23:26:48 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_321_992771642.dbf 2019-02-25 08:08:52 /oradata/log_archive_dest_1/1_322_992771642.dbf 2019-02-25 22:02:12 /oradata/log_archive_dest_1/1_323_992771642.dbf 2019-02-26 01:40:44 /oradata/log_archive_dest_1/1_324_992771642.dbf 2019-02-26 14:00:55 /oradata/log_archive_dest_1/1_325_992771642.dbf 2019-02-26 22:02:15 /oradata/log_archive_dest_1/1_326_992771642.dbf 2019-02-27 00:13:50 /oradata/log_archive_dest_1/1_327_992771642.dbf 2019-02-27 08:15:13 /oradata/log_archive_dest_1/1_328_992771642.dbf 2019-02-27 17:34:15 /oradata/log_archive_dest_1/1_329_992771642.dbf 2019-02-27 23:12:11 /oradata/log_archive_dest_1/1_330_992771642.dbf 2019-02-28 07:00:29 /oradata/log_archive_dest_1/1_331_992771642.dbf 2019-02-28 22:02:25 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- /oradata/log_archive_dest_1/1_332_992771642.dbf 2019-03-01 01:11:12 /oradata/log_archive_dest_1/1_333_992771642.dbf 2019-03-01 21:00:27 /oradata/log_archive_dest_1/1_334_992771642.dbf 2019-03-01 23:24:03 /oradata/log_archive_dest_1/1_335_992771642.dbf 2019-03-02 08:05:02 /oradata/log_archive_dest_1/1_336_992771642.dbf 2019-03-02 10:15:17 /oradata/log_archive_dest_1/1_337_992771642.dbf 2019-03-02 16:00:48 /oradata/log_archive_dest_1/1_338_992771642.dbf 2019-03-02 21:56:43 /oradata/log_archive_dest_1/1_339_992771642.dbf 2019-03-03 01:18:15 /oradata/log_archive_dest_1/1_340_992771642.dbf 2019-03-22 21:37:03 orclstdby 2019-03-22 21:39:13 orclstdby 2019-03-22 21:40:31 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- orclstdby 2019-03-22 21:40:31 orclstdby 2019-03-22 21:40:31 orclstdby 2019-03-22 21:41:14 orclstdby 2019-03-22 21:41:15 orclstdby 2019-03-22 21:41:23 orclstdby 2019-03-22 21:42:07 orclstdby 2019-03-22 21:42:09 orclstdby 2019-03-22 21:42:09 orclstdby 2019-03-22 21:46:12 orclstdby 2019-03-22 21:46:13 orclstdby 2019-03-22 21:46:13 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- orclstdby 2019-03-22 21:46:36 orclstdby 2019-03-22 21:46:39 orclstdby 2019-03-22 21:46:39 orclstdby 2019-03-22 21:47:13 orclstdby 2019-03-22 21:47:21 orclstdby 2019-03-22 21:47:21 orclstdby 2019-03-22 21:47:34 orclstdby 2019-03-22 21:47:48 orclstdby 2019-03-22 21:47:48 orclstdby 2019-03-22 21:47:52 orclstdby 2019-03-22 21:48:22 NAME COMPLETION_TIME ------------------------------------------------------------ ------------------- orclstdby 2019-03-22 21:48:23 /oradata/log_archive_dest_1/1_341_992771642.dbf 2019-03-22 21:53:12 orclstdby 2019-03-22 21:59:24 orclstdby 2019-03-22 22:04:15 orclstdby 2019-03-22 22:04:15 280 rows selected. SQL> |
可以看到,日志产生的时间间隔并不规律。
这里为了演示效果,将改参数设为:5分钟
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SQL> !ls -ltr /oradata/log_archive_dest_1/ | grep "Mar" | grep 22 -rw-r----- 1 oracle oinstall 13046272 Mar 22 21:36 1_340_992771642.dbf -rw-r----- 1 oracle oinstall 179110400 Mar 22 21:53 1_341_992771642.dbf -rw-r----- 1 oracle oinstall 182747648 Mar 22 22:31 1_342_992771642.dbf -rw-r----- 1 oracle oinstall 202976768 Mar 22 22:32 1_344_992771642.dbf -rw-r----- 1 oracle oinstall 202976768 Mar 22 22:33 1_343_992771642.dbf -rw-r----- 1 oracle oinstall 19697664 Mar 22 22:34 1_345_992771642.dbf -rw-r----- 1 oracle oinstall 41902592 Mar 22 22:35 1_346_992771642.dbf SQL> SQL> show parameter archive_lag_target NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ archive_lag_target integer 0 SQL> SQL> alter system set archive_lag_target=300; System altered. SQL> SQL> show parameter archive_lag_target NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ archive_lag_target integer 300 SQL> |
为了看到效果,我们让数据库生成一些大的数据:
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SQL> create table me as select * from dba_objects; Table created. SQL> |
然后再看看:
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SQL> !ls -ltr /oradata/log_archive_dest_1/ | grep "Mar" | grep 22 -rw-r----- 1 oracle oinstall 13046272 Mar 22 21:36 1_340_992771642.dbf -rw-r----- 1 oracle oinstall 179110400 Mar 22 21:53 1_341_992771642.dbf -rw-r----- 1 oracle oinstall 182747648 Mar 22 22:31 1_342_992771642.dbf -rw-r----- 1 oracle oinstall 202976768 Mar 22 22:32 1_344_992771642.dbf -rw-r----- 1 oracle oinstall 202976768 Mar 22 22:33 1_343_992771642.dbf -rw-r----- 1 oracle oinstall 19697664 Mar 22 22:34 1_345_992771642.dbf -rw-r----- 1 oracle oinstall 41902592 Mar 22 22:35 1_346_992771642.dbf -rw-r----- 1 oracle oinstall 12880384 Mar 22 22:40 1_347_992771642.dbf -rw-r----- 1 oracle oinstall 421888 Mar 22 22:45 1_348_992771642.dbf SQL> |
可以看到,现在,日志已经每隔五分钟生成一次。
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Done。