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

(Doc ID 2064144.1)

Last updated on MARCH 08, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.4 and later
Information in this document applies to any platform.

Symptoms

Below errors seen in alert log file.

Exception [type: unknown signal, unknown code] [ADDR:0x0] [PC:0xFFFF80FFBDBFB2CB, _syscall6()+27] [flags: 0x0, count: 1]

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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