truss shows polls. What does that mean?

From: Wolfgang Breitling <breitliw_at_centrexcc.com>
Date: Thu, 19 Feb 2004 12:51:35 -0700
Message-Id: <6.0.3.0.2.20040219124516.02dcf2a0@pop.centrexcc.com>

We are having a production process that is sitting on a fairly benign insert statement for the pas 2 hours. Last night it was processing for 9 hours plus, racking up LIO that make the federal deficit (US or Canada doesn't matter) pale in comparison. I just ran the statement in sqlplus and it does its thing in 11 seconds.

I turned on a 10046 level 12 trace , but there are no (oracle) waits. it is just burning cpu.

Then I did a truss on the process and this is what it shows:

[dom1 ~/admin/FS75PRD/udump] truss -c -p 28279

^Csyscall              seconds   calls  errors
poll                    1.00    7836
yield                    .01     174
                      -------  ------   ----
sys totals:             1.01    8010      0
usr time:               8.83
elapsed:               13.62

[dom1 ~/admin/FS75PRD/udump] uname -a

SunOS dom1 5.8 Generic_108528-23 sun4u sparc SUNW,Sun-Fire

Oracle 8.1.7.2

Any explanation / suggestion?

Wolfgang Breitling
Oracle7, 8, 8i, 9i OCP DBA
Centrex Consulting Corporation
http://www.centrexcc.com

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Received on Thu Feb 19 2004 - 13:51:35 CST