cdmp_{timestamp} directories are created under BDUMP with trace files .trw

(Doc ID 1198873.1)

Last updated on SEPTEMBER 08, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 and later
Information in this document applies to any platform.
Checked for relevance on 19 Jul 2012

Symptoms

We see in BDUMP location some folders generated with names like cdmp_<timestamp> (for example cdmp_20100817041604 ) that contain trace files with extension .trw .

The trace files are generated by both background and foreground processes.

An excerpt of a trace file is:

1 1020304 2 2048 704 72 0
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, OLAP, Data Mining
and Real Application Testing options
ORACLE_HOME = <oracle_home>
System name: SunOS
Node name: <machine>
Release: 5.10
Version: Generic_137111-05
Machine: sun4v
Instance name: <instance>
Oracle process number: 142
Unix process pid: 2928, image: oracle@<machine>

46B5772C:AB798AD8 142 0 10280 1 kst: process state object created on 08-04 19:25:59.309
46B5772D:AB798AD9 142 0 10280 3 kst: process info: ospid=2928 pso_num=142 pso_serial#=19
46B57900:AB798ADA 142 0 10420 1 kso: new process: pid=2928 (legacy spawn)
...


Also, in alert.log we see messages like:

Tue Aug 17 04:16:04 2010
Trace dumping is performing id=[cdmp_20100817041604]

Cause

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