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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:
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
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?
Oracle ASM ORA-15196: invalid ASM block header [kfc.c:29416] [endian_kfbh]   [0 != 1]
6 instances fell down yesterday afternoon with a because ORA-00227: corrupt block detected.
Oracle ASM Corruption: How To Fix The ASM Disk HEADER_STATUS From FORMER To MEMBER.
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SCOPE & APPLICATION
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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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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