Oracle Database How to check Oracle binary file 32 bit or 64 bit

** Myself
cd $ORACLE_HOME/bin
file oracle
For 32 bit not show 32-bit
oracle: ELF 32-bit MSB executable SPARC Version 1, dynamically linked, not stripped

For 64 bit show 64-bit
On Sun
oracle: ELF 64-bit MSB executable SPARCV9 Version 1, dynamically linked, not stripped
On Linux
oracle: setuid setgid ELF 64-bit LSB executable, AMD x86-64, version 1 (SYSV), for GNU/Linux 2.6.4, dynamically linked (uses shared libs), for GNU/Linux 2.6.4, not stripped