Fix ORA-15040: diskgroup is incomplete by renaming ASM Disks
How to fix ORA-15040 when the disk header is corrupted by renaming the disk, by using the oracleasm rename disks
corruption
ORA-600 [3020] and Point-In-Time Database Recovery
How to fix ORA-600 during PITR due to corrupt blocks, when no good backup is available to perfom a block recovery.
Block Corruption & ORA-01653
Getting past ORA-01653 when working on fixing database corruption