记一次Oracle 生产库还原归档日志经历
同事电话说急着要恢复生产库上的归档日志。系统环境是10.2.0.5，RAC，归档日志在node1上建立了nfs共享，而node2上没有建立nfs共享
中午刚去吃饭，就接到同事电话说急着要恢复生产库上的归档日志。系统环境是10.2.0.5，RAC，归档日志在node1上建立了nfs共享，而node2上没有建立nfs共享。另有一套查询库，通过DSG的同步软件将数据从生产库上同步到查询库上。软件原理是通过传说分析归档日志然后加以应用，总体感觉有点像DG。由于生产库上使用的是增量备份，每天都进行备份。且备份完后会自动删除归档日志。恢复生产库的归档日志的原因是，同步到查询库时失败(采用DSG的备份软件时，当遇到大量DML操作时经常遇到同步失败的情况)，需要重新同步，但归档日志已经被删除，故需要还原归档日志。查询库昨日17:00后的数据同步失败，故需要还原从昨日至今的归档日志。系统环境交代到这，下面是具体的实施步骤。
在node1上进行操作
$ pwd
/arch_log/restore
$ df -g
Filesystem GB blocks Free %Used Iused %Iused Mounted on
/dev/hd4 10.00 9.56 5% 12767 1% /
/dev/hd2 10.00 6.75 33% 62385 4% /usr
/dev/hd9var 10.00 9.23 8% 13956 1% /var
/dev/hd3 10.00 9.09 10% 3512 1% /tmp
/dev/hd1 10.00 8.99 11% 8013 1% /home
/dev/hd11admin 0.25 0.25 1% 5 1% /admin
/proc - - - - - /proc
/dev/hd10opt 10.00 9.73 3% 10356 1% /opt
/dev/livedump 0.25 0.25 1% 8 1% /var/adm/ras/livedump
/dev/lv_oracle10g 30.00 11.84 61% 215252 7% /oracle10g
/dev/lv_zs_arch_01 997.00 989.75 1% 32 1% /arch_log
/dev/lv_zs_db2bk_01 998.00 432.63 57% 167 1% /rman_db2_bk
/dev/lv_zs_bck_01 2992.00 1836.57 39% 224 1% /rman_data
/dev/lv_cdump 200.00 199.97 1% 15 1% /oracle10g/app/oracle/admin/zgscdb/cdump
/dev/lv_dsg1 49.75 43.97 12% 8831 1% /dsg1
fjlt_zgsc_db02:/arch_log/zgsc_db02_arch 997.00 971.00 3% 34 1% /arch_log/zgsc_db02_arch
/arch_log挂载点下空余空间接近1T，，目标将归档日志还原到/arch_log/restore下
第一反应，通过v$archived_log找到17:00以后的归档日志序列号
select sequence#,completion_time from v$archived_log where completion_time > to_date('2012-02-15','hh24:mi:ss');
查询得出从sequence#为16147开始的归档日志为2012-02-17 17:00以后的归档日志
执行
$ rman target /
Recovery Manager: Release 10.2.0.5.0 - Production on Thu Feb 16 13:07:12 2012
Copyright (c) 1982, 2007, Oracle. All rights reserved.
connected to target database: ZGSCDB (DBID=3629726729)
RMAN> run{
2> allocate channel c1 type disk;
3> allocate channel c2 type disk;
4> allocate channel c3 type disk;
5> allocate channel c4 type disk;
6> set archivelog destination to '/arch_log/restore';
7> restore archivelog from logseq 16147;
8> release channel c1 ;ype disk
9> release channel c2;
10> release channel c3;
11> release channel c4;
12> }
using target database control file instead of recovery catalog
allocated channel: c1
channel c1: sid=4834 instance=zgscdb1 devtype=DISK
allocated channel: c2
channel c2: sid=5333 instance=zgscdb1 devtype=DISK
allocated channel: c3
channel c3: sid=4879 instance=zgscdb1 devtype=DISK
allocated channel: c4
channel c4: sid=5317 instance=zgscdb1 devtype=DISK
executing command: SET ARCHIVELOG DESTINATION
Starting restore at 16-FEB-12
released channel: c1
released channel: c2
released channel: c3
released channel: c4
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of restore command at 02/16/2012 13:10:53
RMAN-20242: specification does not match any archive log in the recovery catalog
RMAN> list archivelog from logseq 16147;
省略部分输出
List of Archived Logs in backup set 5193
Thrd Seq Low SCN Low Time Next SCN Next Time
---- ------- ---------- --------- ---------- ---------
2 16148 12670010177819 15-FEB-12 12670011207570 15-FEB-12
2 16149 12670011207570 15-FEB-12 12670012283915 15-FEB-12
2 16150 12670012283915 15-FEB-12 12670012754302 15-FEB-12
2 16151 12670012754302 15-FEB-12 12670012969887 15-FEB-12
2 16152 12670012969887 15-FEB-12 12670013212670 15-FEB-12
2 16153 12670013212670 15-FEB-12 12670013780868 15-FEB-12
2 16154 12670013780868 15-FEB-12 12670013976009 15-FEB-12
2 16155 12670013976009 15-FEB-12 12670015183858 15-FEB-12
2 16156 12670015183858 15-FEB-12 12670015441965 15-FEB-12
2 16157 12670015441965 15-FEB-12 12670015599451 15-FEB-12
2 16158 12670015599451 15-FEB-12 12670015722094 15-FEB-12
2 16159 12670015722094 15-FEB-12 12670015785593 15-FEB-12
2 16160 12670015785593 15-FEB-12 12670015847887 15-FEB-12
2 16161 12670015847887 15-FEB-12 12670016000750 15-FEB-12
Backup Set Copy #1 of backup set 5193
Device Type Elapsed Time Completion Time Compressed Tag
----------- ------------ --------------- ---------- ---
DISK 00:03:55 16-FEB-12 NO TAG20120216T010430
List of Backup Pieces for backup set 5193 Copy #1
BP Key Pc# Status Piece Name
------- --- ----------- ----------
12560 1 AVAILABLE /rman_data/zgscdb_rman/ZGSCDB_arch_20120216_39n3e111_s5225_p1_C1
12561 2 AVAILABLE /rman_data/zgscdb_rman/ZGSCDB_arch_20120216_39n3e111_s5225_p2_C1
12562 3 AVAILABLE /rman_data/zgscdb_rman/ZGSCDB_arch_20120216_39n3e111_s5225_p3_C1
List of Archived Logs in backup set 5198
Thrd Seq Low SCN Low Time Next SCN Next Time
---- ------- ---------- --------- ---------- ---------
2 16134 12668052207072 15-FEB-12 12668052339209 15-FEB-12
2 16135 12668052339209 15-FEB-12 12668052456743 15-FEB-12
2 16136 12668052456743 15-FEB-12 12668052579080 15-FEB-12
2 16137 12668052579080 15-FEB-12 12668052695760 15-FEB-12
2 16138 12668052695760 15-FEB-12 12668056672468 15-FEB-12
2 16139 12668056672468 15-FEB-12 12668060445745 15-FEB-12
2 16140 12668060445745 15-FEB-12 12668062444755 15-FEB-12
2 16141 12668062444755 15-FEB-12 12668660576479 15-FEB-12
2 16142 12668660576479 15-FEB-12 12668660718987 15-FEB-12
2 16143 12668660718987 15-FEB-12 12668660871830 15-FEB-12
2 16144 12668660871830 15-FEB-12 12668661303733 15-FEB-12
2 16145 12668661303733 15-FEB-12 12668661585953 15-FEB-12
2 16146 12668661585953 15-FEB-12 12668662079217 15-FEB-12
2 16147 12668662079217 15-FEB-12 12670010177819 15-FEB-12
Backup Set Copy #1 of backup set 5198
Device Type Elapsed Time Completion Time Compressed Tag
----------- ------------ --------------- ---------- ---
DISK 00:01:07 16-FEB-12 NO TAG20120216T010430
List of Backup Pieces for backup set 5198 Copy #1
BP Key Pc# Status Piece Name
------- --- ----------- ----------
12573 1 AVAILABLE /rman_data/zgscdb_rman/ZGSCDB_arch_20120216_3an3e18j_s5226_p1_C1
12574 2 AVAILABLE /rman_data/zgscdb_rman/ZGSCDB_arch_20120216_3an3e18j_s5226_p2_C1
12575 3 AVAILABLE /rman_data/zgscdb_rman/ZGSCDB_arch_20120216_3an3e18j_s5226_p3_C1
List of Archived Logs in backup set 5195
Thrd Seq Low SCN Low Time Next SCN Next Time
---- ------- ---------- --------- ---------- ---------
2 16162 12670016000750 15-FEB-12 12670016088204 15-FEB-12
2 16163 12670016088204 15-FEB-12 12670016308969 15-FEB-12
2 16164 12670016308969 15-FEB-12 12670016653192 15-FEB-12
2 16165 12670016653192 15-FEB-12 12670017027396 15-FEB-12
2 16166 12670017027396 15-FEB-12 12670017225549 15-FEB-12
2 16167 12670017225549 15-FEB-12 12670017317060 15-FEB-12
2 16168 12670017317060 15-FEB-12 12670017393441 15-FEB-12
2 16169 12670017393441 15-FEB-12 12670017462567 15-FEB-12
2 16170 12670017462567 15-FEB-12 12670017541021 15-FEB-12
2 16171 12670017541021 15-FEB-12 12670017654244 15-FEB-12
2 16172 12670017654244 15-FEB-12 12670017735163 15-FEB-12
2 16173 12670017735163 15-FEB-12 12670017811611 15-FEB-12
2 16174 12670017811611 15-FEB-12 12670017888323 15-FEB-12
2 16175 12670017888323 15-FEB-12 12670019198216 15-FEB-12
Backup Set Copy #1 of backup set 5195
Device Type Elapsed Time Completion Time Compressed Tag
----------- ------------ --------------- ---------- ---
DISK 00:03:56 16-FEB-12 NO TAG20120216T010430
List of Backup Pieces for backup set 5195 Copy #1
BP Key Pc# Status Piece Name
------- --- ----------- ----------
12566 1 AVAILABLE /rman_data/zgscdb_rman/ZGSCDB_arch_20120216_38n3e111_s5224_p1_C1
12567 2 AVAILABLE /rman_data/zgscdb_rman/ZGSCDB_arch_20120216_38n3e111_s5224_p2_C1
12568 3 AVAILABLE /rman_data/zgscdb_rman/ZGSCDB_arch_20120216_38n3e111_s5224_p3_C1
可以看到从日志序列号为16147到16181的归档日志备份全部存。那为什么执行list backup of archivelog from logseq 16147;时没有输出呢？