Case:
The customer is the IBM X3650M3 server, with a total of 2 SAS interface hard disks with a capacity of 500G.The system can not enter normally.Prompt that the data area cannot be mount, the database is: Oracle 11G.
Solution:
The engineer first tested 2 hard disks and found that No. 1 hard disk was normal and no hardware problem.A large number of dish channels of 5 million sectors on the 2nd hard drive 2 are the hard disk that has just been replaced in half a month.The restored data was long ago, not the latest data of customers.Analyze and restore the No. 2 hard disk, and to extract the Oracle file manually.After verification, the database is correct.100%recovery.