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TROUBLESHOOTING - Oracle ASM disk not found/visible/discovered issues

Posted by PDSERVICE on Apr 09, 2020 In
APPLIES TO:
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
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Oracle ASM ORA-15063 / ORA-15042 - TROUBLESHOOTING STEPS BEFORE OPENING a SR to Oracle Support

Posted by PDSERVICE on Apr 09, 2020 In
APPLIES TO:
Oracle Database - Enterprise Edition
Oracle Database Cloud Schema Service - Version N/A and later
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Oracle ASM disk group is not mounted on second node|| showing corruption

Posted by PDSERVICE on Apr 09, 2020 In
Hello Experts,
 
 
Envirionment :
OS: RHEL 5.6
Oracle :11.2.0.3 + PSU 5
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Oracle ASM KFED Reports “KFBTYP_INVALID” & OS Metadata [LVM2 001] In "/dev/<DISK #1>" Disk /ASM disk Member (ASM Disk Overlapping : Scenario #2).

Posted by PDSERVICE on Apr 09, 2020 In
APPLIES TO:
Oracle Database Exadata Express Cloud Service - Version N/A and later
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KFED Reports “KFBTYP_INVALID” & OS Metadata [EFI PART] In Oracle ASMLIB Disk /ASM disk Member (ASM Disk Overlapping : Scenario #1).

Posted by PDSERVICE on Apr 09, 2020 In
APPLIES TO:
Oracle Database - Enterprise Edition - Version 10.2.0.1 to 12.1.0.1 [Release 10.2 to 12.1]
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Generic check for error Oracle ASM ORA-15042

Posted by PDSERVICE on Apr 09, 2020 In
Error ORA-15042 means asm cannot mount the diskgroup as some of it member disks are not visible to asm.
 
 
 
How to find which disk is missing:
 
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Is it possible to access the oracle asm diskgroup if the underline disk partition table is corrupted

Posted by PDSERVICE on Apr 09, 2020 In
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Oracle Database Block Corruption in ASM

Posted by PDSERVICE on Apr 09, 2020 In
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

Posted by PDSERVICE on Apr 09, 2020 In
 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

Posted by PDSERVICE on Apr 09, 2020 In
we met several times ORA-15196 without any reason.
 
1) no error in OS message
 
2) no error on storage
 
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