Case:
A company server IBM AIX+Oracle+LVM (6 plates), Oracle database file loss and DMP backup file loss, urgently need to restore Oracle database files and DMP backup files.
Solution:
According to engineers, the 6 plates of the AIX array server summarized the storage method of the AIX operating system itself, rather than the RAID5 structure described by the AIX operating system itself.On the No. 1 and No. 4, and then analyze the Superblock structure and INODE structure of JFS2, the engineer successfully extracts the data required by the customer by hand, and then restores the recovered database file to the original storage position.It was found that Oracle made an error in the Open process. After studying and analyzing Oracle’s alarm log file Alert.log, I found that it is necessary to use the archive log file to perform the front roll operation (Roll Forward).Log in, and the daily work is returning to normal.