ORA-00600: internal error code, arguments: [504]..[KFC Hash Latch] while scrub (Doc ID 2417145.1)

Last updated on MAY 25, 2021

Applies to:

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
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

Below errors are reported in ASM instance alert log.

NOTE: Scrubbing repair block 2 in file 4.1 in slave
Errors in file /scratch/oracle/gibase/diag/asm/+asm/+ASM3/trace/+ASM3_scr8_22640.trc (incident=6409):
ORA-00600: internal error code, arguments: [504], [0x079160B90], [32], [5], [KFC Hash Latch], [523], [0x079160B90], [KFC Hash Latch], [], [], [], []
Incident details in: /scratch/oracle/gibase/diag/asm/+asm/+ASM3/incident/incdir_6409/+ASM3_scr8_22640_i6409.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
2016-10-19T21:26:10.886883-07:00
WARNING: ORA-600 signaled when performing scrubbing op 4 for gn=6 fn=4 blk=2 blksiz=4096
2016-10-19T21:26:10.887185-07:00
Errors in file /scratch/oracle/gibase/diag/asm/+asm/+ASM3/trace/+ASM3_scr8_22640.trc:
<error barrier> at 0x7ffe46521ba0
ORA-00600: internal error code, arguments: [504], [0x079160B90], [32], [5], [KFC Hash Latch], [523], [0x079160B90], [KFC Hash Latch], [], [], [], []
2016-10-19T21:26:11.032750-07:00
Dumping diagnostic data in directory=[cdmp_20161019212611], requested by (instance=3, osid=22640 (SCR8)), summary=[incident=6409].

+ASM3_scr8_22640_i6409.trc

Dump continued from file: /scratch/oracle/gibase/diag/asm/+asm/+ASM3/trace/+ASM3_scr8_22640.trc
[TOC00001]
ORA-00600: internal error code, arguments: [504], [0x079160B90], [32], [5], [KFC Hash Latch], [523], [0x079160B90], [KFC Hash Latch], [], [], [], []

[TOC00001-END]
[TOC00002]
========= Dump for incident 6409 (ORA 600 [504]) ========
[TOC00003]
----- Beginning of Customized Incident Dump(s) -----
*** LATCH HIERARCHY ERROR ***
An attempt to get the 'KFC Hash Latch' latch (child #523) at level 5 (address = 0x79160b90)
from location 'kfc2.h LINE:902 ID:kfcDel01' (also see call stack below)
is a duplicate attempt to get the same latch:
Level 5: 'KFC Hash Latch' (child #523) (address = 0x79160b90)
gotten from location 'kfc2.h LINE:1192 ID:kfcWriteBlock'
----- End of Customized Incident Dump(s) -----
[TOC00003-END]

*** 2016-10-19T21:26:09.293630-07:00
dbkedDefDump(): Starting incident default dumps (flags=0x2, level=3, mask=0x0)
[TOC00004]
----- SQL Statement (None) -----
Current SQL information unavailable - no cursor.
[TOC00004-END]

[TOC00005]

----- Call Stack Trace -----

<- ksl_level_check <- kslgetl <- kfcLatchGetPriv <- kfcDel <- kss_del_cb