Why when Oracle gives me a 00060 Deadlock error do my trace logs no graphs?

Question

Normally everything you read online shows you that Oracle's trace files will contain a deadlock graph.
At work we have trace files being generated and when we look at the trace file reference by the alert file
there is no deadlock graph for any deadlock 00060 detected error.
We have an Oracle 11gR1 RAC cluster
Any idea why we wouldn't see deadlock graphs with all the useful information necessary to hunt down these deadlocks?

Answer 1

Hi,
Actually word "Graph" was misleading, if you expect the graph you mention through tat link, then you are right, you should see that "graph. See the trace file name in the alert log file and then open that file and you should see this graph in the start of this trace file.
I created a deadlock scenario and following is what i find in my trace file which tells me session, object id and row ids involved in the dead lock.
{code}
DEADLOCK DETECTED
[Transaction Deadlock]
Current SQL statement for this session:
delete from test where ename='MILLER'
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)---------
Resource Name process session holds waits process session holds waits
TX-00030013-00006a5a 16 120 X 20 131 X
TX-0006000d-00006aff 20 131 X 16 120 X
session 120: DID 0001-0010-000001F5     session 131: DID 0001-0014-000000E2
session 131: DID 0001-0014-000000E2     session 120: DID 0001-0010-000001F5
Rows waited on:
Session 131: obj - rowid = 0001727B - AAAXJ7AAEAAAB8EAAH
(dictionary objn - 94843, file - 4, block - 7940, slot - 7)
Session 120: obj - rowid = 0001727B - AAAXJ7AAEAAAB8EAAN
(dictionary objn - 94843, file - 4, block - 7940, slot - 13)
Information on the OTHER waiting sessions:
Session 131:
pid=20 serial=594 audsid=189998 user: 54/SCOTT
O/S info: user: Salman, term: SALMAN, ospid: 6504:8036, machine: UTAC\SALMAN
program: sqlplus.exe
application name: SQL*Plus, hash value=3669949024
Current SQL Statement:
delete from test where ename='SCOTT'
End of information on OTHER waiting sessions.
{code}
*Note:* Please always write your code/output enclosed in {code} tag and see "Preview" before posting your reply
Thanks
Salman