Data security warning: fdisk causes ASM disk data loss Solution

Data security warning: fdisk causes the ASM disk data loss solution. For more information, see.

Yesterday, a friend encountered a database fault case:
11.2.0.3 the database crashed due to damage to the asm disk header block and encountered an incorrect ORA-15196.
More detailed error: ORA-15196: invalid ASM block header [kfc. c: 26076] [endian_kfbh] [256] [0! = 1]
Further checks have found that the primary and standby databases are also damaged. This makes everyone confused. Why is the primary and standby databases damaged at the same time?

After careful inspection, we found that:
SA finds that a disk on the host is useless, and fdisk mkfs is executed on both the master and backup.

The final recovery benefits from the user's remote disaster recovery environment.
The warning in this case is:
1. It is important for DBA and SA to strengthen communication.
The lack of communication led to this disaster, and SA's unauthorized operations also violated the security operation procedures.
2. Saving lives at critical moments in the disaster recovery environment
Backup and Disaster Tolerance environments are the lifeblood of enterprise data security.