ORA-07445 [kxsdcbc] Raised Soon After ORA-60 Deadlock. Not Resolved From Note 472393.1

(Doc ID 756165.1)

Last updated on NOVEMBER 28, 2016

Applies to:

Oracle Database - Enterprise Edition - Version and later
Information in this document applies to any platform.
***Checked for relevance on 19-Dec-2013***


The following symptoms have been attributed to this issue:

a) Running on a Windows based platform.  The bug covered in this article is Windows port specific.

b) Alert log may report an ORA-60 error:

ORA-00060: Deadlock detected

But if no ORA-60 is seen in the alert the article can still be considered applicable provided all other symptoms are met.

c) Alert log will report ORA-07445 error:

ORA-07445: exception encountered: core dump [ACCESS_VIOLATION] [kxsdcbc+1053]
[PC:0x9CAE45] [ADDR:0x1C] [UNABLE_TO_READ] []

The ORA-7445 may be reported in different ways depending on platform, typically 'kxsdcbc' will be reported but if not, the trace file should be looked at in more detail.

d) ORA-07445 tracefile will report a 'deadlock' graph/message:

[Transaction Deadlock]
The following deadlock is not an ORACLE error. It is a
deadlock due to user error in the design of an application
or from issuing incorrect ad-hoc SQL. The following
information may aid in determining the deadlock:
Deadlock graph:
---------Blocker(s)-------- ---------Waiter(s)---------

e) The call stack trace will be similar to:

kxsdcbc <- kxsDump1 <- kxsDump <- kxsDumpCursor <- kxsDumpCursors <- curdmp <- ksudps <- ksqdldnl <- ksqcmi <- ksqcnv
<- ktagetg0 <- ktagetp <- ktagetg <- ktagdw <- ktaadm <- kksfbc <- opiexe <- opipls <- opiodr <- rpidrus
<- rpidru <- rpiswu2 <- rpidrv <- psddr0 <- psdnal <- pevm_EXECC <- pfrinstr_EXECC <- pfrrun_no_tool <- pfrrun <- plsql_run
<- peicnt <- kkxexe <- opiexe <- kpoal8 <- opiodr <- ttcpip <- opitsk <- opiino <- opiodr <- opirip
<- opidrv <- sou2o <- opimai_real <- opimai <- BackgroundThreadStart

The key function for this article to be considered is 'kxsdcbc', if this is not seen in the stack the note is unlikely to provide a resolution.


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