DM7使用dmrestore執行並行對映檔案還原
使用dmrestore執行並行對映檔案還原
對於並行備份產生的備份檔案，系統支援利用還原工具對資料庫進行並行還原。與並行備份一樣，並行還原需要使用者指定並行對映檔案的儲存位置。由於並行備份可能是增量備份，而備份的基礎備份也有可能是並行備份，因此執行並行還原需要指定一個對映檔案存放的目錄，用於還原的並行備份的對映檔案都存放在該目錄下。並行還原能提高還原效能，使得資料服務迅速還原。需要說明的是，備份時的對映檔案內容應與還原時對映檔案內容保持一致，但這不是必需的，系統在還原前，會對使用者設定的對映檔案內容進行校驗，判斷對映檔案內容是否與備份時對映檔案內容相容，保證系統能正確還原資料庫。
建立並行對映檔案
[dmdba@shard1 backup]$ vi bak.parallel [DMHR,USERS]=/dm_home/dmdba/dmdbms/backup/backup1 [FG_PERSON]=/dm_home/dmdba/dmdbms/backup/backup2 [default]=/dm_home/dmdba/dmdbms/backup/backup3
建立資料庫的備份檔案
SQL> backup database full to para_bak bakfile '/dm_home/dmdba/dmdbms/backup/parallel.bak' parallel '/dm_home/dmdba/dmdbms/backup/bak.parallel'; executed successfully used time: 00:00:12.628. Execute id is 164. [dmdba@shard1 backup]$ ls -lrt -rw-r--r-- 1 dmdba dinstall 146 8月 4 11:50 bak.parallel drwxr-xr-x 2 dmdba dinstall 47 8月 4 12:10 backup3 drwxr-xr-x 2 dmdba dinstall 47 8月 4 12:10 backup2 drwxr-xr-x 2 dmdba dinstall 47 8月 4 12:10 backup1 -rw-r--r-- 1 dmdba dinstall 33554432 8月 4 12:10 parallel.bak [dmdba@shard1 backup]$ cd backup1 [dmdba@shard1 backup1]$ ls -lrt 總用量 1512 -rw-r--r-- 1 dmdba dinstall 33554432 8月 4 12:10 DB_jydm_20200804121005000554_1.bak [dmdba@shard1 backup1]$ cd .. [dmdba@shard1 backup]$ cd backup2 [dmdba@shard1 backup2]$ ls -lrt 總用量 28 -rw-r--r-- 1 dmdba dinstall 33554432 8月 4 12:10 DB_jydm_20200804121005000554_1.bak [dmdba@shard1 backup2]$ cd .. [dmdba@shard1 backup]$ cd backup3 [dmdba@shard1 backup3]$ ls -lrt 總用量 390420 -rw-r--r-- 1 dmdba dinstall 402653184 8月 4 12:10 DB_jydm_20200804121005000554_1.bak
使用並行備份檔案來還原資料庫，並行對映檔案為/dm_home/dmdba/dmdbms/backup/bak.parallel
[root@shard1 oracle]# service DmServicejydm stop Redirecting to /bin/systemctl stop DmServicejydm.service [dmdba@shard1 backup]$ dmrestore ini_path=/dm_home/dmdba/dmdbms/data/jydm/dm.ini file=/dm_home/dmdba/dmdbms/backup/parallel.bak parallel_dir=/dm_home/dmdba/dmdbms/backup/bak.parallel restore V7.1.6.46-Build(2018.02.08-89107)ENT file dm.key not found, use default license! backup sig: BA backup tool version: 12595 backup db name: jydm backup db magic: -848310636 backup pemnt magic: 1250320462 backup name: PARA_BAK backup type: full backup level: online backup range: database backup description: compressed level: 0 encrypt_type: 0 encrypt_id: 2052 rac node: 0 page check: 0 rlog encrypt: 0 external cipher id: 0 external hash id: 0 length in char: 0 use new hash: 1 backup time: 2020-08-04 12:10:05 page size: 8 KB extent size: 16 case sensitive: 1 log page size: 512 B charset: 0 data version: 0x7000A sys version: V7.1.6.46-Build(2018.02.08-89107)ENT enable policy: 0 mpp_timestamp: 1596514204 crc_check: TRUE parallel type: 1 parallel info len: 1536 backup db fil num: 9 archive flag: 1 backup with log: Yes before backup LSN: 32598802 after backup LSN: 32598813 $bak_seq |$file_path |$size(K) |$used(K) 1|/dm_home/dmdba/dmdbms/backup/parallel.bak | 32768.00| 47.50 $file_seq |$type|$ts_name |$state |$size(K) |$seq_in_bak |$off_in_bak(B) |$len_in_bak(B) |$file_path |$mirror_path 1|DBF |SYSTEM |ONLINE | 23552| 1| 0| 0|/dm_home/dmdba/dmdbms/data/jydm/SYSTEM.DBF | 2|DBF |ROLL |ONLINE | 229376| 1| 0| 0|/dm_home/dmdba/dmdbms/data/jydm/ROLL.DBF | 3|DBF |MAIN |ONLINE | 305152| 1| 0| 0|/dm_home/dmdba/dmdbms/data/jydm/MAIN.DBF | 4|DBF |BOOKSHOP |ONLINE | 153600| 1| 0| 0|/dm_home/dmdba/dmdbms/data/jydm/BOOKSHOP.DBF | 5|DBF |DMHR |ONLINE | 131072| 1| 0| 0|/dm_home/dmdba/dmdbms/data/jydm/DMHR.DBF | 6|DBF |USERS |ONLINE | 51200| 1| 0| 0|/dm_home/dmdba/dmdbms/data/jydm/users01.dbf | 7|DBF |SYSAUX |ONLINE | 179200| 1| 0| 0|/dm_home/dmdba/dmdbms/data/jydm/SYSAWR.DBF | 8|DBF |FG_PERSON |ONLINE | 131072| 1| 0| 0|/dm_home/dmdba/dmdbms/data/jydm/FG_PERSON.DBF | 9|LOG |ARCHLOG |ONLINE | 0| 1| 44544| 4096| | backup sig: BA backup tool version: 12595 backup db name: jydm backup db magic: -848310636 backup pemnt magic: 1250320462 backup name: PARA_BAK backup type: full backup level: online backup range: database backup description: compressed level: 0 encrypt_type: 0 encrypt_id: 2052 rac node: 0 page check: 0 rlog encrypt: 0 external cipher id: 0 external hash id: 0 length in char: 0 use new hash: 1 backup time: 2020-08-04 12:10:05 page size: 8 KB extent size: 16 case sensitive: 1 log page size: 512 B charset: 0 data version: 0x7000A sys version: V7.1.6.46-Build(2018.02.08-89107)ENT enable policy: 0 mpp_timestamp: 1596514204 crc_check: TRUE parallel type: 2 parallel info len: 0 backup db fil num: 2 archive flag: 1 backup with log: Yes before backup LSN: 32598802 after backup LSN: 0 $bak_seq |$file_path |$size(K) |$used(K) 1|/dm_home/dmdba/dmdbms/backup/backup1/DB_jydm_20200804121005000554_1.bak| 32768.00| 1510.00 $file_seq |$type|$ts_name |$state |$size(K) |$seq_in_bak |$off_in_bak(B) |$len_in_bak(B) |$file_path |$mirror_path 1|DBF |DMHR |ONLINE | 131072| 1| 14336| 425984|/dm_home/dmdba/dmdbms/data/jydm/DMHR.DBF | 2|DBF |USERS |ONLINE | 51200| 1| 440320| 1105920|/dm_home/dmdba/dmdbms/data/jydm/users01.dbf | backup sig: BA backup tool version: 12595 backup db name: jydm backup db magic: -848310636 backup pemnt magic: 1250320462 backup name: PARA_BAK backup type: full backup level: online backup range: database backup description: compressed level: 0 encrypt_type: 0 encrypt_id: 2052 rac node: 0 page check: 0 rlog encrypt: 0 external cipher id: 0 external hash id: 0 length in char: 0 use new hash: 1 backup time: 2020-08-04 12:10:05 page size: 8 KB extent size: 16 case sensitive: 1 log page size: 512 B charset: 0 data version: 0x7000A sys version: V7.1.6.46-Build(2018.02.08-89107)ENT enable policy: 0 mpp_timestamp: 1596514204 crc_check: TRUE parallel type: 2 parallel info len: 0 backup db fil num: 1 archive flag: 1 backup with log: Yes before backup LSN: 32598802 after backup LSN: 0 $bak_seq |$file_path |$size(K) |$used(K) 1|/dm_home/dmdba/dmdbms/backup/backup2/DB_jydm_20200804121005000554_1.bak| 32768.00| 26.00 $file_seq |$type|$ts_name |$state |$size(K) |$seq_in_bak |$off_in_bak(B) |$len_in_bak(B) |$file_path |$mirror_path 1|DBF |FG_PERSON |ONLINE | 131072| 1| 10240| 16384|/dm_home/dmdba/dmdbms/data/jydm/FG_PERSON.DBF | backup sig: BA backup tool version: 12595 backup db name: jydm backup db magic: -848310636 backup pemnt magic: 1250320462 backup name: PARA_BAK backup type: full backup level: online backup range: database backup description: compressed level: 0 encrypt_type: 0 encrypt_id: 2052 rac node: 0 page check: 0 rlog encrypt: 0 external cipher id: 0 external hash id: 0 length in char: 0 use new hash: 1 backup time: 2020-08-04 12:10:05 page size: 8 KB extent size: 16 case sensitive: 1 log page size: 512 B charset: 0 data version: 0x7000A sys version: V7.1.6.46-Build(2018.02.08-89107)ENT enable policy: 0 mpp_timestamp: 1596514204 crc_check: TRUE parallel type: 2 parallel info len: 0 backup db fil num: 5 archive flag: 1 backup with log: Yes before backup LSN: 32598802 after backup LSN: 0 $bak_seq |$file_path |$size(K) |$used(K) 1|/dm_home/dmdba/dmdbms/backup/backup3/DB_jydm_20200804121005000554_1.bak| 393216.00| 390418.00 $file_seq |$type|$ts_name |$state |$size(K) |$seq_in_bak |$off_in_bak(B) |$len_in_bak(B) |$file_path |$mirror_path 1|DBF |SYSTEM |ONLINE | 23552| 1| 26624| 6766592|/dm_home/dmdba/dmdbms/data/jydm/SYSTEM.DBF | 2|DBF |ROLL |ONLINE | 229376| 1| 6793216| 10887168|/dm_home/dmdba/dmdbms/data/jydm/ROLL.DBF | 3|DBF |MAIN |ONLINE | 305152| 1| 17680384| 270917632|/dm_home/dmdba/dmdbms/data/jydm/MAIN.DBF | 4|DBF |BOOKSHOP |ONLINE | 153600| 1| 288598016| 933888|/dm_home/dmdba/dmdbms/data/jydm/BOOKSHOP.DBF | 5|DBF |SYSAUX |ONLINE | 179200| 1| 289531904| 110256128|/dm_home/dmdba/dmdbms/data/jydm/SYSAWR.DBF | Continue?[Y/N]:Y restore bak_file: /dm_home/dmdba/dmdbms/backup/parallel.bak ... start restore database... start restore database... start restore database... start restore file: /dm_home/dmdba/dmdbms/data/jydm/FG_PERSON.DBF(FG_PERSON), pages: 2 start restore file: /dm_home/dmdba/dmdbms/data/jydm/DMHR.DBF(DMHR), pages: 52 start restore file: /dm_home/dmdba/dmdbms/data/jydm/SYSTEM.DBF(SYSTEM), pages: 826 end restore file: /dm_home/dmdba/dmdbms/data/jydm/FG_PERSON.DBF(FG_PERSON) end restore database data files. end restore file: /dm_home/dmdba/dmdbms/data/jydm/DMHR.DBF(DMHR) end restore file: /dm_home/dmdba/dmdbms/data/jydm/SYSTEM.DBF(SYSTEM) start restore file: /dm_home/dmdba/dmdbms/data/jydm/users01.dbf(USERS), pages: 135 start restore file: /dm_home/dmdba/dmdbms/data/jydm/ROLL.DBF(ROLL), pages: 1329 end restore file: /dm_home/dmdba/dmdbms/data/jydm/ROLL.DBF(ROLL) end restore file: /dm_home/dmdba/dmdbms/data/jydm/users01.dbf(USERS) start restore file: /dm_home/dmdba/dmdbms/data/jydm/MAIN.DBF(MAIN), pages: 33071 end restore database data files. end restore file: /dm_home/dmdba/dmdbms/data/jydm/MAIN.DBF(MAIN) start restore file: /dm_home/dmdba/dmdbms/data/jydm/BOOKSHOP.DBF(BOOKSHOP), pages: 114 end restore file: /dm_home/dmdba/dmdbms/data/jydm/BOOKSHOP.DBF(BOOKSHOP) start restore file: /dm_home/dmdba/dmdbms/data/jydm/SYSAWR.DBF(SYSAUX), pages: 13459 end restore file: /dm_home/dmdba/dmdbms/data/jydm/SYSAWR.DBF(SYSAUX) end restore database data files. redo tmp arch file: /dm_home/dmdba/dmdbms/backup/RES_TMP_ARCH_20200804121936840_0.log, rpages: 16 Apply archive log LSN from 32598814 to 32598813, time used:0.000s. restore finished, code = 0! restore successfully! restore time used: 9800.081(ms)
啟動資料庫
[root@shard1 oracle]# service DmServicejydm start Redirecting to /bin/systemctl start DmServicejydm.service SQL> select * from t1; LINEID C1 C2 ---------- ----------- ----------- 1 1 1 2 2 2 3 3 3 4 4 4 5 5 5 6 6 6 6 rows got used time: 0.427(ms). Execute id is 101.
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