How to know whether my Oracle is 32 bit or 64 bit? My Unix OS is 64 bit or not?

Check out this page:-
Oracle Advice

In my case:-
SQL> select address from v$sql where rownum <3;

ADDRESS
----------------
C000000089B2A230
C0000000897F8D00
Means oracle was 64 bit.

And Unix is 64bit also:-
$ getconf KERNEL_BITS
64

To check Unix/Linux OS version:-
$ uname -a
Linux abulhasim.fun.com 2.6.9-34.ELsmp #1 SMP Fri Feb 24 16:54:53 EST 2006 i686 i686 i386 GNU/Linux

Check this page:-
http://forums13.itrc.hp.com/service/forums/questionanswer.do?admit=109447627+1227684096982+28353475&threadId=1150062


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