达梦7数据库增量备份恢复
操作系统 Redhat 6.10
达梦V7.6.0.197-Build(2019.09.12-112648)ENT
本文通过backup database SQL语句对达梦数据库进行增量备份
然后通过dmrestore命令恢复增量数据库
前提条件
数据库要处于归档模式
SQL> select arch_name,arch_type,arch_dest from v$dm_arch_ini;
行号 ARCH_NAME ARCH_TYPE ARCH_DEST
---------- -------------- --------- ---------
1 ARCHIVE_LOCAL1 LOCAL /dm7/arch
已用时间: 4.194(毫秒). 执行号:13.
SQL> select arch_mode from v$database;
行号 ARCH_MODE
---------- ---------
1 Y
已用时间: 1.007(毫秒). 执行号:14.
SQL>
执行命令如下：
1.全备份
disql sysdba/SYSDBA
backup database full backupset '/dm7/backup/full_bak';
2.增量备份
disql sysdba/SYSDBA
insert into test values(1);
commit;
select checkpoint(1);
backup database increment with backupdir '/dm7/backup/' to dmincord1 bakfile '/dm7/backup/dmincord1.bak' backupinfo '测试增量备份1' ;
3.恢复增量备份
退出disql，使用dmrestore工具执行恢复
dmrestore ini_path=/dm7/data/DAMENG/dm.ini file=/dm7/backup/dmincord1.bak
4.检查增量数据
disql sysdba/SYSDBA
select * from test;
执行过程如下
SQL> create table test ( a int );
操作已执行
已用时间: 4.477(毫秒). 执行号:4.
SQL> backup database full backupset '/dm7/backup/full_bak';
操作已执行
已用时间: 00:00:01.211. 执行号:5.
SQL> --增量备份
insert into test values(1);
影响行数 1
已用时间: 0.580(毫秒). 执行号:6.
SQL> commit;
操作已执行
已用时间: 1.168(毫秒). 执行号:7.
SQL> select checkpoint(1);
行号 CHECKPOINT(1)
---------- -------------
1 0
已用时间: 146.546(毫秒). 执行号:8.
SQL> backup database increment with backupdir '/dm7/backup/' to dmincord1 bakfile '/dm7/backup/dmincord1.bak' backupinfo '测试增量备份1' ;
操作已执行
已用时间: 00:00:01.603. 执行号:10.
SQL> host ls -l /dm7/backup/
total 8
drwxr-xr-x. 2 dmdba dinstall 4096 Jun 7 19:40 full_bak
drwxr-xr-x. 2 dmdba dinstall 4096 Jun 7 19:41 incr_bak
SQL> exit
启动达梦console工具，
$DM_HOME/tools/console
在Backup and Restore设置好Search Directory(S)，点击Refresh Backup(R)
可观察到增量备份和全备份的信息
[dmdba@dm7 bin]$ /etc/rc.d/init.d/DmServiceDMSERVER stop
Stopping DmServiceDMSERVER: [ OK ]
[dmdba@dm7 bin]$ dmrestore ini_path=/dm7/data/DAMENG/dm.ini file=/dm7/backup/dmincord1.bak
restore V7.6.0.197-Build(2019.09.12-112648)ENT
file dm.key not found, use default license!
backup sig: BA
backup tool version: 12595
backup db name: DAMENG
backup db magic: -624002858
backup pemnt magic: -2035944448
backup name: DMINCORD1
backup type: increment
backup level: online
backup range: database
backup description: 测试增量备份1
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: 2020-06-07 19:20:51
page size: 8 KB
extent size: 16
case sensitive: 1
log page size: 512 B
charset: 0
data version: 0x7000A
sys version: V7.1.6.197-Build(2019.09.12-112648)ENT
enable policy: 0
mpp_timestamp: 1591528850
crc_check: TRUE
parallel type: 0
parallel info len: 0
backup db fil num: 10
archive flag: 1
base backup LSN: 77088
base name: DMINCORD1
backup with log: Yes
before backup LSN: 86337
after backup LSN: 86337
$bak_seq |$file_path |$size(K) |$used(K)
1|/dm7/backup/dmincord1.bak | 65536.00| 35062.00
$file_seq |$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 | 22528| 1| 47104| 122880|/dm7/data/DAMENG/SYSTEM.DBF |
2|DBF |ROLL |ONLINE | 2048000| 1| 169984| 35700736|/dm7/data/DAMENG/ROLL.DBF |
3|DBF |MAIN |ONLINE | 131072| 1| 35870720| 32768|/dm7/data/DAMENG/MAIN.DBF |
4|DBF |BOOKSHOP |ONLINE | 153600| 1| 35903488| 0|/dm7/data/DAMENG/BOOKSHOP.DBF |
5|DBF |DMHR |ONLINE | 131072| 1| 35903488| 0|/dm7/data/DAMENG/DMHR.DBF |
6|DBF |TBS3 |ONLINE | 32768| 1| 35903488| 0|/dm7/disk1/tbs3_1.dbf |
7|DBF |TBS3 |ONLINE | 32768| 1| 35903488| 0|/dm7/disk2/tbs3_2.dbf |
8|DBF |TBS3 |ONLINE | 36864| 1| 35903488| 0|/dm7/data/tbs3_3.dbf |
9|DBF |TEST |ONLINE | 32768| 1| 35903488| 0|/dm7/data/DAMENG/test.dbf |
10|LOG |ARCHLOG |ONLINE | 0| 1| 35903488| 0| |
Continue?[Y/N]:y
restore bak_file: /dm7/backup/inc/dmfull1.bak ...
start restore database...
start restore file: /dm7/data/DAMENG/SYSTEM.DBF(SYSTEM), pages: 688
end restore file: /dm7/data/DAMENG/SYSTEM.DBF(SYSTEM)
start restore file: /dm7/data/DAMENG/ROLL.DBF(ROLL), pages: 4390
end restore file: /dm7/data/DAMENG/ROLL.DBF(ROLL)
start restore file: /dm7/data/DAMENG/MAIN.DBF(MAIN), pages: 4
end restore file: /dm7/data/DAMENG/MAIN.DBF(MAIN)
start restore file: /dm7/data/DAMENG/BOOKSHOP.DBF(BOOKSHOP), pages: 108
end restore file: /dm7/data/DAMENG/BOOKSHOP.DBF(BOOKSHOP)
start restore file: /dm7/data/DAMENG/DMHR.DBF(DMHR), pages: 85
end restore file: /dm7/data/DAMENG/DMHR.DBF(DMHR)
start restore file: /dm7/data/DAMENG/tbs3_1.dbf(TBS3), pages: 4
end restore file: /dm7/data/DAMENG/tbs3_1.dbf(TBS3)
start restore file: /dm7/data/DAMENG/tbs3_2.dbf(TBS3), pages: 1
end restore file: /dm7/data/DAMENG/tbs3_2.dbf(TBS3)
start restore file: /dm7/data/DAMENG/tbs3_3.dbf(TBS3), pages: 1
end restore file: /dm7/data/DAMENG/tbs3_3.dbf(TBS3)
start restore file: /dm7/data/DAMENG/test.dbf(TEST), pages: 2
end restore file: /dm7/data/DAMENG/test.dbf(TEST)
end restore database data files.
restore bak_file: /dm7/backup/inc1.bak ...
start restore database...
end restore database data files.
restore bak_file: /dm7/backup/dmincord1.bak ...
start restore database...
start restore file: /dm7/data/DAMENG/SYSTEM.DBF(SYSTEM), pages: 15
end restore file: /dm7/data/DAMENG/SYSTEM.DBF(SYSTEM)
start restore file: /dm7/data/DAMENG/ROLL.DBF(ROLL), pages: 4358
end restore file: /dm7/data/DAMENG/ROLL.DBF(ROLL)
start restore file: /dm7/data/DAMENG/MAIN.DBF(MAIN), pages: 4
end restore file: /dm7/data/DAMENG/MAIN.DBF(MAIN)
end restore database data files.
Apply archive log LSN from 86338 to 86337, time used:0.000s.
restore finished, code = 0!
restore successfully!
restore time used: 4840.037(ms)
[dmdba@dm7 bin]$
[dmdba@dm7 bin]$ /etc/rc.d/init.d/DmServiceDMSERVER start
Starting DmServiceDMSERVER: [ OK ]
[dmdba@dm7 bin]$ disql sysdba/SYSDBA
服务器[LOCALHOST:5236]:处于普通打开状态
登录使用时间: 6.840(毫秒)
disql V7.6.0.197-Build(2019.09.12-112648)ENT
SQL> select * from test;
行号 A
---------- -----------
1 1
已用时间: 2.859(毫秒). 执行号:12.
SQL>
可以看到全备份后插入的数据已经恢复。
参考文档
达梦(7)增量备份恢复测试
https://blog.csdn.net/xcl168/article/details/18353201