Last updated on NOVEMBER 28, 2016

Applies to:

Oracle Server - Enterprise Edition - Version:
This problem can occur on any platform.


The purpose of this article is to show a reproducible ORA-3113/ORA-7445 issue that has
not been raised as a bug but instead is covered here with a recommended workaround
should the same situation be seen for other users.

Please be aware that whilst this Internal error in this situation does not correlate to any invalid
data or result in any impact beyond session termination it MUST NOT be implemented on
anything other than a TEST instance/machine and appropriate backups should always be taken
in advance of this type of testing.

The symptoms are :-

a) CREATE or REPLACE view : Performed on non SYS schema and on a SYS DBA view eg DBA_ROLE_PRIVS

b) CREATE fails at session level with ORA-03113 and session is disconnected

c) ORA-07445 reported in alert similar to :-

ORA-07445: exception encountered: core dump [qcdlgtd()+265] [SIGSEGV]
[Address not mapped to object] [0x000000000] [] []

However some platforms will not show a failing function so the tracefile also needs to be

d) Stack in trace file will be similar to :-

Function List (to Full stack) (to Summary stack)

ksedmp <- ssexhd <- sigacthandler <- qcdlgtd <- qcsfplob <- qcsprfro <- qcsfpaj <- qcsprfro <- qcsfpaj <- qcsprfro <- qcsfpaj <- qcsprfro <- qcsfpaj <- qcsprfro <- qcsfpaj <- qcsprfro <- qcspafq <- qcspqb <- kkmdrv <- rpiswu2 <- opiSem <- opiprs <- kksald <- rpiswu2 <- kkslod <- kglobld <- kglobpn <- kglpim <- kglpin <- kksfbc <- kkspsc0 <- opiosq0 <- opipls <- opiodr <- rpidrus <- skgmstack <- rpidru <- rpiswu2 <- rpidrv <- psddr0 <- psdnal <- pevm_EXIM <- pfrrun <- peicnt <- kkxexe <- opiexe <- opiall0 <- kpoal8 <- opiodr <- ttcpip <- opitsk <- opiino <- opiodr <- opidrv <- sou2o <- main <- start

QCDLGTD must be seen in alert or trace for this article to be considered.

e) Also in stack trace file we will see evidence of an object not existing ie NEXS status :-

SO: 0x901a1790, type: 51, owner: 0x8f356320, flag: INIT/-/-/0x00
LIBRARY OBJECT LOCK: lock=901a1790 handle=91fc71d0 mode=S
call pin=(nil) session pin=(nil)
htl=0x901a1800[0x901cc8c0,0x901cc8c0] htb=0x901cc8c0
user=8e2d52e0 session=8e2d52e0 count=1 flags=[00] savepoint=41
LIBRARY OBJECT HANDLE: handle=91fc71d0
hash=4181a8cc timestamp=12-31-4712 23:59:59
namespace=TABL/PRCD/TYPE flags=KGHP/TIM/SML/[02000000]
kkkk-dddd-llll=0000-0001-0001 lock=S pin=S latch#=2
lwt=0x91fc7200[0x91fc7200,0x91fc7200] ltm=0x91fc7210[0x91fc7210,0x91fc7210]
pwt=0x91fc7230[0x91fc7230,0x91fc7230] ptm=0x91fc72c0[0x91fc72c0,0x91fc72c0]
ref=0x91fc71e0[0x91fc71e0, 0x91fc71e0] lnd=0x91fc72d8[0x91fc72d8,0x91fc72d8]
LIBRARY OBJECT: object=91fc7aa0
type=NEXS flags=EXS/LOC[0005] pflags= [00] status=VALD load=0


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