Identify bit version for OS and DB

For DB once can use
"file oracle" command to check whether the binaries are 32 or 64 bit ones .

For OS depending on the versions once can use the below methods :

Linux
------
getconf WORD_BIT

Sun
---
/usr/bin/isainfo -kv
If the isainfo command does not exist it is not 64-bit.
It should return "64-bit sparcv9 kernel modules"
The "64-bit sparcv9" output indicates the system is running the 64-bit Solaris kernel.


Aix
----
lslpp -L | grep 64bit

It should return "bos.64bit"

HP
----
getconf KERNEL_BITS
It should return "64"