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ORA-07445 [qkanindex] in the alert log for job queue slave process (Doc ID 1506405.1)

Last updated on MARCH 12, 2021

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.1 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.

Symptoms

In alert log, the below errors are popping up periodically.

ORA-07445: exception encountered: core dump [qkanindex()+808]

When you verify the alert log, you will also observe that sql tuning advisor was trying to start just before the ORA-07445 error(like below message).

You will observe this pattern everytime the ORA-07445 is seen.
Begin automatic SQL Tuning Advisor run for special tuning task "SYS_AUTO_SQL_TUNING_TASK"

Stack trace:
--------------

skdstdst <- ksedst1 <- ksedst <- dbkedDefDump <- ksedmp <- ssexhd <- sighandler <- qkanindex <- 03E903E903E903E9


This error is always seen from job queue slave process.

Changes

Recently disabled sql tuning advisor from autotasks of scheduler

Diagnostic Details

Take the output of dba_autotask_client_history.

Cause

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In this Document
Symptoms
Changes
 Diagnostic Details
Cause
Solution


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