RE: Queue waits problem
- From: "Nelson, Allan" <anelson@xxxxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Tue, 11 May 2004 10:53:37 -0500
Found it. It is bug 1103378, execute it in svrmgrl instead.
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Nelson, Allan
Sent: Tuesday, May 11, 2004 10:38 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: Queue waits problem
We are using Oracle 8.1.7.4 with Financials 11.5.7. I found the
=3D66ollowing in a statspack report.
Top 5 Wait Events
~~~~~~~~~~~~~~~~~ Wait %
Total
Event Waits Time (cs)
Wt Time
-------------------------------------------- ------------ ------------
-------
db file sequential read 863,376 587,236
53.46
queue messages 420 430,500
39.19
db file scattered read 189,136 55,541
5.06
latch free 72,217 7,868
.72
enqueue 139 3,192
.29
When I looked on Metalink I found a forum post that indicated that
messages could be queued and never dequeued which could be the cause of
high queue messages waits. The article suggested monitoring
V$AQ to see if the ready column ever went to 0. This is what I got when
I tried to query the table:
desc v$aq
Name Null=3D3F Type
----------------------------------------- --------
----------------------------
QID NUMBER
WAITING NUMBER
READY NUMBER
EXPIRED NUMBER
TOTAL_WAIT NUMBER
AVERAGE_WAIT NUMBER
apps@MBAS> select * from v$aq;
ERROR:
ORA-00604: error occurred at recursive SQL level 1
ORA-01001: invalid cursor
ORA-00604: error occurred at recursive SQL level 1
ORA-01001: invalid cursor
no rows selected
When I searched metalink for this error on this table I got readmes for
patch releases. I'm running utlrp at the moment on the assumption that
I have something invalid that I need.
Any other ideas, or has anyone else seen this before
> Allan L. Nelson
> Oracle DBA
> M-I L.L.C.=3D20
> (832) 295-2238 office=3D20
> (832) 351-4180 fax=3D20
> anelson@xxxxxxxx <mailto:anelson@xxxxxxxx>
>=3D20
>=3D20
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