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ASM disk corrupted

I want to know if the diskgroup couldn't mount and the header of an asm disk corrupted (it is only my supposition), how should I deal with it? Will the data in  the ASM disk lose?
 
 
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Oracle ASM ORA-15196: invalid ASM block header [kfc.c:29416] [endian_kfbh] [287] [2147483648] [0 != 1]

6 instances fell down yesterday afternoon with a because ORA-00227: corrupt block detected.
 
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Oracle ASM Corruption: How To Fix The ASM Disk HEADER_STATUS From FORMER To MEMBER.

 
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Troubleshoot Oracle clusterware Grid Infrastructure Startup Issues

PURPOSE
 
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Oracle ORA-1157 Troubleshooting

PURPOSE
This note is intended to list the common reasons and solutions for the ORA-1157 error.
 
SCOPE
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How to Recover from a Lost or Deleted Oracle Datafile with Different Scenarios

PURPOSE
This article explains the various scenarios for ORA-01157 and how to avoid them.
 
 
SCOPE & APPLICATION
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Recreating a missing Oracle datafile with no backups

GOAL
How to recreate a datafile that is missing at the operating system level. Missing/inaccessible files may be reported with one or more of these errors:
 
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How to Recover an Oracle Database Having Added a Datafile Since Last Backup

NOTE: In the images and/or the document content below, the user information and environment 
data used represents fictitious data from the Oracle sample schema(s), Public Documentation 
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Recover A Lost Oracle Datafile With No Backup

Problem Description: 
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You have inadvertantly lost a datafile at the OS level and there are no current 
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Recover Oracle database after disk loss

 
PURPOSE
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This article aims at walking you through some of the common
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