kcratr_scan_lastbwr (write verification) error
OEL 5.4 (Carthage) running 11.2.0.1.0 Grid Infrastructure, ASM and RAC.
ASM and Grid starts fine (ASM is used for OCR and voting disks, contains ACFS and ASM diskgroups).
When a RAC instance starts, it runs into an ORA-600 kcratr_scan_lastbwr (no other parameters except the module name) - I could not find anything related on Metalink/MoS. The trace file says WRITE VERIFICATION FAILED, followed by the file and block id, together with different versions for that block (BWR version differs from disk version). As this is not a RAC specific error, thought I try my luck in this forum. ;-)
The error reared its head after a failure (power? - still investigating) that rebooted the storage system. Do not see any specific problem on that side. ASM instance also not reporting any errors. Prior to the failure, everything worked fine.
Not considering the SR route as yet as this is a R&D environment with what seems to be a problematic (old) Interconnect switch (also used for storage layer communication) - we've yet to receive a replacement switch.
Wondering if anyone has seen this type of error before. Will appreciate any suggestions and comments regarding.
Thanks.