Instance Crashing With ORA-600 [kcbo_switch_mq_bg_3]

(Doc ID 1493290.1)

Last updated on NOVEMBER 28, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.4 to 11.2.0.1 [Release 10.2 to 11.2]
Information in this document applies to any platform.

Symptoms

One of the DBW processes crashes with:

ORA-00600: internal error code, arguments: [kcbo_switch_mq_bg_3], [662], [155684856], [0], [], [], [], [], [], [], [], []


Review of the generated tracefiles reveals a call stack similar to:

... <- kcbo_switch_mq_bg1 <- kcbkubc <- kcbbic1 <- kcbbiop <- kcbbdrv <- ksbabs <- ksbrdp <- opirip <- ...

Cause

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