April 2020

Oracle Database Block Corruption in ASM

we got Block corruption in the database and found the following alert log entry during that time.
 
we need to find why block corruption occur. what is the culprit OS/Storage/DB ?
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ASM disk header corruption

 Calling all ASM experts - we have the problem described in note     1487443.1     . I have a simple question, as follows:
   
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what's the reason for Oracle ASM ORA-15196 if no OS/storage issues

we met several times ORA-15196 without any reason.
 
1) no error in OS message
 
2) no error on storage
 
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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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