ORA-07445: exception encountered: core dump [strlen()+11] (Doc ID 1062673.1)

Last updated on FEBRUARY 07, 2014

Applies to:

Oracle Database - Enterprise Edition - Version 9.2.0.1 to 11.1.0.7 [Release 9.2 to 11.1]
Information in this document applies to any platform.
***Checked for relevance on 29-Apr-2013***


Symptoms

1. alert log reported:

Tue Mar 10 00:44:23 2009
Errors in file /opt/oracle/app/oracle/admin/orcl/udump/orcl_ora_21809.trc:
ORA-07445: exception encountered: core dump [strlen()+11] [SIGSEGV] [Address
not mapped to object] [0x145] [] []
Tue Mar 10 00:44:24 2009
Trace dumping is performing id=[cdmp_20090310004424]

2. Trace file orcl_ora_21809.trc reported:

*** 2009-03-10 00:44:23.542
*** ACTION NAME:(0000069 STARTED16) 2009-03-10 00:44:23.542
*** MODULE NAME:(backup archivelog) 2009-03-10 00:44:23.542
*** SERVICE NAME:(SYS$USERS) 2009-03-10 00:44:23.542
*** SESSION ID:(124.727) 2009-03-10 00:44:23.542
SKGFQ OSD: Error in function sbtwrite2 on line 1051
SKGFQ OSD: Look for SBT Trace messages in file
/opt/oracle/app/oracle/admin/orcl/udump/sbtio.log
Exception signal: 11 (SIGSEGV), code: 1 (Address not mapped to object), addr:
0x145, PC: [0x40c37d1b, strlen()+11]
Registers:
%eax: 0x00000145 %ebx: 0x40ce6f0c %ecx: 0x00000001
%edx: 0x00001301 %edi: 0x00000145 %esi: 0x00000000
%esp: 0xbfff4a50 %ebp: 0xbfff504c %eip: 0x40c37d1b
%efl: 0x00010202
strlen()+0 (0x40c37d10) mov 0x4(%esp),%ecx
strlen()+4 (0x40c37d14) mov %ecx,%eax
strlen()+6 (0x40c37d16) and $3,%ecx
strlen()+9 (0x40c37d19) je 0x40c37d43
> strlen()+11 (0x40c37d1b) cmpb %ch,(%eax)
strlen()+13 (0x40c37d1d) jz 0x40c37dba
strlen()+19 (0x40c37d23) inc %eax
strlen()+20 (0x40c37d24) xor $3,%ecx
strlen()+23 (0x40c37d27) je 0x40c37d43
*** 2009-03-10 00:44:23.543
ksedmp: internal or fatal error
ORA-07445: exception encountered: core dump [strlen()+11] [SIGSEGV] [Address no
t mapped to object] [0x145] [] []
...............
Call Stack Trace
-------------
ksedst ksedmp ssexhd strlen vsprintf ZN9RMANTrace10trPr intBdyEPcz sbtwrite2 intBdyEPcz skgfwrt ksfq_go ksfq_aio ksfqwr krbb1qwr krbbpc krbibpc pevm_icd_call_commo pfrinstr_ICAL pfrrun_no_tool pfrrun plsql_run pricar pr
icbr prient2 prient kkxrpc kporpc opiodr ttcpip opitsk opiino opiodr opidrv sou2o opimai_real

3. Process state from the trace file:

O/S info: user: oracle, term: , ospid: 21354, machine: szx-odb-03
program: rman@szx-odb-03 (TNS V1-V3)
client info: rman channel=t3
application name: backup archivelog, hash value=3967580964
action name: 0000069 STARTED16, hash value=790837142
waiting for 'Backup: sbtwrite2' blocking sess=0x(nil) seq=12621 wait_time=0
seconds since wait started=0
=0, =0, =0
Dumping Session Wait History
for 'Backup: sbterror' count=1 wait_time=1
=0, =0, =0
for 'Backup: sbtwrite2' count=1 wait_time=58201239
=0, =0, =0
for 'RMAN backup & recovery I/O' count=1 wait_time=965
count=1, intr=100, timeout=ffffffff
for 'Backup: sbtwrite2' count=1 wait_time=9392
=0, =0, =0
for 'Backup: sbtwrite2' count=1 wait_time=24415
=0, =0, =0
for 'Backup: sbtwrite2' count=1 wait_time=2966
=0, =0, =0
for 'Backup: sbtwrite2' count=1 wait_time=2378
=0, =0, =0
for 'Backup: sbtwrite2' count=1 wait_time=2031
=0, =0, =0
for 'Backup: sbtwrite2' count=1 wait_time=3242
=0, =0, =0
for 'Backup: sbtwrite2' count=1 wait_time=2155
=0, =0, =0

Cause

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