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Displaying the number of CPU processors in UNIX
Oracle Tips by Burleson Consulting

Displaying the number of CPU processors in UNIX

You need to have special command for each dialect of UNIX to display CPU information. Knowing the number of CPUs is very important to the Oracle Remote DBA, because it shows the number of parallel query processes that can be concurrently executing on the UNIX server. Table 2-2 shows the common commands for each major dialect.

UNIX Dialect

Command to display the number of CPUs

Linux
cat /proc/cpuinfo|grep processor|wc –l
Solaris
psrinfo -v|grep "Status of processor"|wc –l
AIX
lsdev -C|grep Process|wc –l
HP/UX
ioscan -C processor | grep processor | wc -l

The above is an excerpt from the "Oracle9i UNIX Administration Handbook" by Oracle press, authored by Donald K. Burleson.

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