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【DM版本】:8
【操作系统】：linux
【CPU】:
【问题描述】*：根据达梦文档进行数据还原时，不同备库的魔数不一致，无法进行集群的搭建。下面是执行过程，之前有备份还原过一次，不知道是什么原因。

[dmdba@localhost ~]$ /home/dm8/app/bin/dmrman CTLSTMT="RESTORE DATABASE '/home/dm8/app/data/DAMENG/dm.ini' FROM BACKUPSET '/home/FULL_BACKUP'"
dmrman V8
RESTORE DATABASE '/home/dm8/app/data/DAMENG/dm.ini' FROM BACKUPSET '/home/FULL_BACKUP'
file dm.key not found, use default license!
[Percent:100.00%][Speed:0.00M/s][Cost:00:11:18][Remaining:00:00:00]
restore successfully.
time used: 00:11:18.321
[dmdba@localhost ~]$ /home/dm8/app/bin/dmrman CTLSTMT="RECOVER DATABASE '/home/dm8/app/data/DAMENG/dm.ini' FROM BACKUPSET '/home/FULL_BACKUP'"
dmrman V8
RECOVER DATABASE '/home/dm8/app/data/DAMENG/dm.ini' FROM BACKUPSET '/home/FULL_BACKUP'
file dm.key not found, use default license!
Error Stack
DM[603]:备份集[/home/FULL_BACKUP]备份过程中未产生日志

recover successfully!
time used: 446.776(ms)
[dmdba@localhost ~]$ /home/dm8/app/bin/dmrman CTLSTMT="RECOVER DATABASE '/home/dm8/app/data/DAMENG/dm.ini' UPDATE DB_MAGIC"
dmrman V8
RECOVER DATABASE '/home/dm8/app/data/DAMENG/dm.ini' UPDATE DB_MAGIC
file dm.key not found, use default license!
recover successfully!
time used: 00:00:01.146