huangliang0703的專欄
阿新 • • 發佈：2018-12-20
背景：生產環境是RAC (11.2.0.1) ，要搭建一個單例項的測試環境
實現方法：對生產環境做一個rman備份，然後在測試環境進行不完整恢復
一、rman 備份，備份指令碼如下：
[[email protected] ~]$ more /home/oracle/scripts/zszjk_full.sh #!/bin/sh source /home/oracle/.bash_profilezjk CUSER=`id |cut -d"(" -f2 | cut -d ")" -f1` DT=`date +"%Y%m%d_%H%M%S"` RMAN_LOG_FILE=/home/oracle/bak_dir/zszjk_full.out echo >> $RMAN_LOG_FILE chmod 666 $RMAN_LOG_FILE echo Script $0 >> $RMAN_LOG_FILE echo ==== started on `date` ==== >> $RMAN_LOG_FILE echo >> $RMAN_LOG_FILE rman target / nocatalog msglog $RMAN_LOG_FILE append << EOF RUN { #sql 'alter system archive log current'; allocate channel ch00 TYPE disk; allocate channel ch01 TYPE disk; allocate channel ch02 TYPE disk; allocate channel ch03 TYPE disk; allocate channel ch04 TYPE disk; allocate channel ch05 TYPE disk; #send 'NB_ORA_POLICY=Ora_DB_ecdb02_Full'; backup INCREMENTAL LEVEL 0 filesperset = 5 as compressed backupset database format '/home/oracle/bak_dir/full_ %d_%T_%U.rman'; #sql 'alter system archive log current'; backup filesperset = 15 as compressed backupset archivelog all format '/home/oracle/bak_dir/arch_%d_%T_%U.rman ' delete input force; DELETE noprompt OBSOLETE; crosscheck backup; delete noprompt expired backup; release channel ch00; release channel ch01; release channel ch02; release channel ch03; release channel ch04; release channel ch05; #sql 'alter system archive log current'; ALLOCATE CHANNEL ch00 TYPE disk; copy current controlfile to '/home/oracle/bak_dir/control.full_%d_%T.rman'; backup spfile format '/home/oracle/bak_dir/spfile_%d_%T'; release channel ch00; } EOF
二、在備庫進行恢復
1、恢復引數檔案、控制檔案（使用備份的控制檔案進行恢復）
2、restore 資料檔案，這裡需要對資料檔案路勁進行轉換
run{ allocate channel ch00 TYPE disk; allocate channel ch01 TYPE disk; allocate channel ch02 TYPE disk; allocate channel ch03 TYPE disk; allocate channel ch04 TYPE disk; allocate channel ch05 TYPE disk; set newname for datafile '+DATA1/zjk/system01.dbf' to '/home/oracle/app/oradata/zszjk/system01.dbf' ; set newname for datafile '+DATA1/zjk/sysaux01.dbf' to '/home/oracle/app/oradata/zszjk/sysaux01.dbf' ; set newname for datafile '+DATA1/zjk/undotbs01.dbf' to '/home/oracle/app/oradata/zszjk/undotbs01.dbf' ; set newname for datafile '+DATA1/zjk/users01.dbf' to '/home/oracle/app/oradata/zszjk/users01.dbf' ; set newname for datafile '+DATA1/zjk/system02.dbf' to '/home/oracle/app/oradata/zszjk/system02.dbf' ; set newname for datafile '+DATA1/zjk/users02.dbf' to '/home/oracle/app/oradata/zszjk/users02.dbf' ; set newname for datafile '+DATA1/zjk/users03.dbf' to '/home/oracle/app/oradata/zszjk/users03.dbf' ; set newname for datafile '+DATA1/zjk/users04.dbf' to '/home/oracle/app/oradata/zszjk/users04.dbf' ; set newname for datafile '+DATA1/zjk/users05.dbf' to '/home/oracle/app/oradata/zszjk/users05.dbf' ; set newname for datafile '+DATA1/zjk/users16.dbf' to '/home/oracle/app/oradata/zszjk/users16.dbf' ; set newname for datafile '+DATA1/zjk/system06.dbf' to '/home/oracle/app/oradata/zszjk/system06.dbf' ; set newname for datafile '+DATA1/zjk/undotbs2.dbf' to '/home/oracle/app/oradata/zszjk/undotbs2.dbf' ; restore database; switch datafile all; release channel ch00; release channel ch01; release channel ch02; release channel ch03; release channel ch04; release channel ch05; }
recover database，最後有錯誤提示，找不到 sequence 為112565 的歸檔日誌，那我就指定應用完sequence 為112564的歸檔日誌截止。
RMAN> recover database; Starting recover at 09-NOV-18 using channel ORA_DISK_1 starting media recovery channel ORA_DISK_1: starting archived log restore to default destination channel ORA_DISK_1: restoring archived log archived log thread=2 sequence=29 channel ORA_DISK_1: reading from backup piece /home/oracle/bak_dir/arch_ZSZJK_20181107_aithkfb8_1_1.rman channel ORA_DISK_1: piece handle=/home/oracle/bak_dir/arch_ZSZJK_20181107_aithkfb8_1_1.rman tag=TAG20181107T133640 channel ORA_DISK_1: restored backup piece 1 channel ORA_DISK_1: restore complete, elapsed time: 00:00:15 channel ORA_DISK_1: starting archived log restore to default destination channel ORA_DISK_1: restoring archived log archived log thread=1 sequence=112564 channel ORA_DISK_1: reading from backup piece /home/oracle/bak_dir/arch_ZSZJK_20181107_ajthkfb8_1_1.rman channel ORA_DISK_1: piece handle=/home/oracle/bak_dir/arch_ZSZJK_20181107_ajthkfb8_1_1.rman tag=TAG20181107T133640 channel ORA_DISK_1: restored backup piece 1 channel ORA_DISK_1: restore complete, elapsed time: 00:00:15 archived log file name=/oracle/database/11.2/db_1/dbs/arch1_112564_919583396.dbf thread=1 sequence=112564 archived log file name=/oracle/database/11.2/db_1/dbs/arch2_29_919583396.dbf thread=2 sequence=29 unable to find archived log archived log thread=1 sequence=112565 RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03002: failure of recover command at 11/09/2018 10:34:07 RMAN-06054: media recovery requesting unknown archived log for thread 1 with sequence 112565 and starting SCN of 862714094743
RMAN> recover database until sequence 112565;
Starting recover at 09-NOV-18
using channel ORA_DISK_1
starting media recovery
media recovery complete, elapsed time: 00:00:00
Finished recover at 09-NOV-183、resetlogs 開啟資料庫報錯，檢視告警日誌，怎麼還是從asm 裡面去讀資料檔案，網上查資料，需要重建控制檔案
SQL> alter database open resetlogs;
alter database open resetlogs
*
ERROR at line 1:
ORA-03113: end-of-file on communication channel
Process ID: 15386
Session ID: 66 Serial number: 7Errors in file /home/oracle/app/diag/rdbms/zszjkst/zszjk/trace/zszjk_ora_15150.trc:
ORA-19625: error identifying file +DATA1/zjk/system01.dbf
ORA-17503: ksfdopn:2 Failed to open file +DATA1/zjk/system01.dbf
ORA-15001: diskgroup "DATA1" does not exist or is not mounted
ORA-15077: could not locate ASM instance serving a required diskgroup
ORA-29701: unable to connect to Cluster Synchronization Service
Switch of datafile 1 complete to datafile copy 4、重建控制檔案
alter database backup controlfile to trace as '/home/oracle/control_new.trc';
CREATE CONTROLFILE REUSE DATABASE "ZSZJK" RESETLOGS ARCHIVELOG
MAXLOGFILES 40
MAXLOGMEMBERS 3
MAXDATAFILES 100
MAXINSTANCES 8
MAXLOGHISTORY 74752
LOGFILE
GROUP 4 '/home/oracle/app/oradata/zszjk/redo04.log' SIZE 500M BLOCKSIZE 512,
GROUP 5 '/home/oracle/app/oradata/zszjk/redo05.log' SIZE 500M BLOCKSIZE 512,
GROUP 6 '/home/oracle/app/oradata/zszjk/redo06.log' SIZE 500M BLOCKSIZE 512
-- STANDBY LOGFILE
-- GROUP 8 '/home/oracle/app/oradata/zszjk/redo8' SIZE 1024M BLOCKSIZE 512,
-- GROUP 9 '/home/oracle/app/oradata/zszjk/redo9' SIZE 1024M BLOCKSIZE 512,
-- GROUP 10 '/home/oracle/app/oradata/zszjk/redo10' SIZE 1024M BLOCKSIZE 512,
-- GROUP 11 '/home/oracle/app/oradata/zszjk/redo11' SIZE 1024M BLOCKSIZE 512
DATAFILE
'/home/oracle/app/oradata/zszjk/system01.dbf',
'/home/oracle/app/oradata/zszjk/sysaux01.dbf',
'/home/oracle/app/oradata/zszjk/undotbs01.dbf',
'/home/oracle/app/oradata/zszjk/users01.dbf',
'/home/oracle/app/oradata/zszjk/system02.dbf',
'/home/oracle/app/oradata/zszjk/users02.dbf',
'/home/oracle/app/oradata/zszjk/users03.dbf',
'/home/oracle/app/oradata/zszjk/users04.dbf',
'/home/oracle/app/oradata/zszjk/users05.dbf',
'/home/oracle/app/oradata/zszjk/users16.dbf',
'/home/oracle/app/oradata/zszjk/system06.dbf',
'/home/oracle/app/oradata/zszjk/undotbs2.dbf'
CHARACTER SET AL32UTF8
;
再次開啟資料庫，成功了
SQL> alter database open resetlogs;
alter database open resetlogs
*
ERROR at line 1:
ORA-38856: cannot mark instance UNNAMED_INSTANCE_2 (redo thread 2) as enabled