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Database Terminated Unexpected Due To ORA-07445:[_kaio()+10] and ORA-07445:[_syscall6()+27] errors (Doc ID 2064144.1)

Last updated on OCTOBER 09, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.4 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.
NOTE: In the images and/or the document content below, the user information and data used represents fictitious data.
Any similarity to actual persons, living or dead, is purely coincidental and not intended in any manner.

Symptoms

Below errors seen in alert log file.

ORA-07445: exception encountered: core dump [_kaio()+10] [unknown signal] [ADDR:0x0] [PC:0xFFFF80FFBDBFA41A] [unknown code] []
ORA-07445: exception encountered: core dump [_syscall6()+27] [unknown signal] [ADDR:0x0] [PC:0xFFFF80FFBDBFB2CB] [unknown code] []

Subsequently instance terminated with below messages.

Termination issued to instance processes. Waiting for the processes to exit
Instance termination failed to kill one or more processes
Instance terminated by ARC1, pid = 29473

CALL STACK

kaio <- skgfospo <- skgfrwat <- ksfdwtio <- ksfdwat_internal <- 1754 <- ksfdblock <- kfk_block_ufs
        

Cause

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In this Document
Symptoms
Cause
Solution


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