DM7使用dmrestore执行并行映射文件还原

使用dmrestore执行并行映射文件还原
对于并行备份产生的备份文件,系统支持利用还原工具对数据库进行并行还原。与并行备份一样,并行还原需要用户指定并行映射文件的存储位置。由于并行备份可能是增量备份,而备份的基础备份也有可能是并行备份,因此执行并行还原需要指定一个映射文件存放的目录,用于还原的并行备份的映射文件都存放在该目录下。并行还原能提高还原性能,使得数据服务迅速还原。需要说明的是,备份时的映射文件内容应与还原时映射文件内容保持一致,但这不是必需的,系统在还原前,会对用户设置的映射文件内容进行校验,判断映射文件内容是否与备份时映射文件内容兼容,保证系统能正确还原数据库。

创建并行映射文件

[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

创建数据库的备份文件

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
总用量 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
总用量 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
总用量 390420
-rw-r--r-- 1 dmdba dinstall 402653184 8月   4 12:10 DB_jydm_20200804121005000554_1.bak

使用并行备份文件来还原数据库,并行映射文件为/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)

启动数据库

[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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