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Instance Crashes With ORA-00600 [kclrwrite_16] When Attempting To Use MATERIALIZE Hint (Doc ID 1606822.1)

Last updated on OCTOBER 15, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.3 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 Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.
Standby RAC database opened READ ONLY, temp table transformation will
attempt to perform temp writes during parallel execution in the
remote instance.

This will ultimately lead the DBWR raising a kclrwrite_16 assert
as the database is open read only.

Symptoms

NOTE: In the images and/or the document content below, the user information and data used represents fictitious data from the Oracle sample schema(s) or Public Documentation delivered with an Oracle database product. Any similarity to actual persons, living or dead, is purely coincidental and not intended in any manner.

SQL> connect <user_name>/<pwd>
Connected.
SQL> with XYZ as (select /*+ MATERIALIZE PARALLEL(e,3) */ * from T1 e)
select /*+ PARALLEL(m, 3) */ COL1 from XYZ m;  2  
with XYZ as (select /*+ MATERIALIZE PARALLEL(e,3) */ * from T1 e)
*
ERROR at line 1:
ORA-16000: database open for read-only access


SQL> with XYZ as (select /*+ MATERIALIZE PARALLEL(e,3) */ * from T1 e)
select /*+ PARALLEL(m, 3) */ COL1 from XYZ m;  2  
with XYZ as (select /*+ MATERIALIZE PARALLEL(e,3) */ * from T1 e)
*
ERROR at line 1:
ORA-12805: parallel query server died unexpectedly

Remote instance <instance_name> will get a kcl assert as it is asked to write
out a temp segment header from the temp table transformation:

Wed Feb 06 08:47:47 2013
Errors in file
/<DIR>/<SID>_dbw0_2986.trc  (incident=1737):
ORA-00600: internal error code, arguments: [kclrwrite_16], [], [], [], [],
[], [], [], [], [], [], []
Incident details in:
/<DIR>/<SID>_dbw0_29861_i173.trc

 

Call stack

............

dbgexExplicitEndInc [diag_dde]
dbgeEndDDEInvocationImpl [diag_dde]
dbgeEndDDEInvocation [diag_dde]
kclrwrite []<-- Signaling
kcbbxsv [CACHE_RCV]
kcbb_coalesce [CACHE_RCV]
kcbbwlru [CACHE_RCV]
kcbbdrv [CACHE_RCV]
ksbabs [background_proc]
ksbrdp [background_proc]
opirip []
opidrv []
sou2o []
opimai_real []
ssthrdmain []
main []
_libc_start_main []
_start []

 

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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