Applies to:
Oracle Database - Enterprise Edition - Version 7.0.16.0 and later
Generic UNIX
Checked for relevance on 08-FEB-2013
Purpose
To identify the Unix command necessary to trace Unix system calls for a process.
Scope
This article is intended for use by any Unix user who needs to provide Oracle Support with O/S level trace information from a process. The commands listed here may be not generally available within the operating system, and so you should consult your hardware/Operating System supplier to purchase/license use of these tools if they are not available.
Details
How to Trace Unix System Calls for a Process
The following platforms support a trace utility that can be used to identify what a process is doing:
O/S Version | Trace Utility |
Oracle/Sun Solaris, Unixware 7.0 | truss, e.g.: $ truss -aefo <output file> <executable> $ truss -rall -wall -p <PID> |
HP/UX 11 | tusc, e.g.: $ tusc -afpo <output file> <pid> <executable> (See: http://hpux.connect.org.uk/hppd/hpux/Sysadmin/tusc-8.0/) |
IBM AIX 4.x | trace, e.g.: Log on as root. # trace -a -L 4000000 -T 2000000 -o ./trace.out; # owsctl start admin # trcstop # trcrpt -O exec=on,pid=on trace.out > trcrpt.1 Or if present sctrace, e.g.: $ sctrace -Amo <output file> <executable> $ prpt -p <trace file> <executable> Note: 'sctrace' has been discontinued by Veritas Software Corporation Inc. (formerly The Kernel Group Inc) as off Jan. 8, 2002. |
IBM AIX 5L | truss, e.g.: $ truss -aefo <output file> <executable> |
Linux | strace, ktrace/kdump, ltrace e.g.: $ strace -fo <output file> <executable> |
SGI IRIX 6.x | par, e.g.: $ par -siSSo <output file> <executable> |
HP Tru64 Unix | trace or truss, e.g.: $ trace -fo <output file> <executable> $ truss -aefo <output file> <executable> |
Apple Mac OS X | ktrace/kdump, e.g.: $ script kdump.out $ /usr/bin/ktrace -adi <command> $ /usr/bin/kdump $ exit $ more kdump.out |
Sequent Dynix/PTX | truss, e.g.: $ truss -aefo <output file> <executable> |
Data General DG/UX R4.20MU06 | dg_trace, e.g.: $ dg_strace -fxto <output> [<executable>] [-p <pid>] |
References
NOTE:1812.1 - TECH: Getting a Stack Trace from a CORE file on Unix
NOTE:314533.1 - Installing TUSC for HP-UX 11.00, 11.11,11.23,11.31(PA-RISC and Itanium) on the fly as a non-root user
NOTE:28588.1 - TECH: Using Truss / Trace on Unix