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Database Crash With ORA-27063 and OS Error: 5: I/O Error (Doc ID 877549.1)

Last updated on JULY 05, 2023

Applies to:

Oracle Database - Enterprise Edition - Version and later
Information in this document applies to any platform.


Database may crash due to I/O errors depending on the file that reports the error, such as the controlfile.

Alert log may report messages like these:


ORA-15080: synchronous I/O operation failed to write block 57889 of disk 1 in disk group FRA  
ORA-27063: number of bytes read/written is incorrect
IBM AIX RISC System/6000 Error: 5: I/O error    
Additional information: 4294967295
Additional information: 1536
TNS-12535: TNS:operation timed out
Wed Jul 03 09:59:49 2019
WARNING: Write Failed. group:1 disk:3 AU:85369 offset:65536 size:16384
Wed Jul 03 09:59:49 2019
ORA-00202: control file: '+DATA/CONTROLFILE/current.274.912163547'
ORA-15081: failed to submit an I/O operation to a disk
ORA-27072: File I/O error
IBM AIX RISC System/6000 Error: 5: I/O error
Additional information: 7
Additional information: 174835808
Additional information: 4294967295


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