My Oracle Support Banner

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

Last updated on MAY 19, 2021

Applies to:

Oracle Database - Enterprise Edition - Version and later
Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database 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.


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.


Recently disabled sql tuning advisor from autotasks of scheduler

Diagnostic Details

Take the output of dba_autotask_client_history.


To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document
 Diagnostic Details

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.