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Exadata/SuperCluster/ODA/RAC/SIHA: ORA-600 [KFFBADDBLK04] triggered creating files in the ASM Diskgroup (Doc ID 2852883.1)

Last updated on MARCH 02, 2022

Applies to:

Oracle Database - Enterprise Edition - Version 11.1.0.7 to 19.14.0.0.0 [Release 11.1 to 19]
Information in this document applies to any platform.

Symptoms

 ORA-600 [kffbAddBlk04] triggered in the ASM Instance while adding/creating files in the ASM Diskgroup.

 

 

The ORA-600[kffbAddBlk04] error indicates ASM metadata corruption.

This assert means that ASM needed to get a new block either in ASM File Directory (ASM File# 1) or ASM alias directory (ASM File# 6) for an ASM file allocation.
ASM free block Manager (List-head) reported that the block was free, but the block information shows it is already allocated.
This is a fatal inconsistent state of ASM Metadata.

 

Cause

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In this Document
Symptoms
Cause
Solution
References

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