ORA-00600:[ktfs_upd_range-1] Can occur During Truncate Table

(Doc ID 2247478.1)

Last updated on APRIL 01, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.2 and later
Information in this document applies to any platform.

Symptoms

1. The following error is logged in the alert.log:

ORA-00600: internal error code, arguments: [ktfs_upd_range-1], [], [], [], [], [], [], [], [], [], [], []

2. In this case, the issue occurs for a truncate statement:

truncate table <tablename>;

3. Partial call stack:

ktfs_upd_range ktfs_saset_stat ktfs_flush_utime ktfs_reset_segment_modtime ktsstrn_segment ktsstrn_segment ...

4. Heat Map has been disabled in the database.

SQL> show parameter HEAT_MAP;

NAME                        TYPE           VALUE
------------------------------------ ----------- ------------------------------
heat_map                     string                  OFF

4. SYAUX tablespace still shows segment HeatMapconsuming space.

SELECT owner, segment_name, segment_type, SUM(bytes) seg_size, COUNT(extent_id)
FROM dba_extents
WHERE tablespace_name='SYSAUX'
GROUP BY owner,segment_name , segment_type
ORDER BY seg_size DESC;

OWNER SEGMENT_NAME SEGMENT_TYPE SEG_SIZE COUNT(EXTENT_ID)
----- ------------- ------------- -------- ----------------
SYS HEATMAP SYSTEM STATISTICS 520093696 62

Cause

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