How to check whether oracle is 32bit/64bit and running OS platform is 32bit/64bit?

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For Oracle:

Go to ORACLE_HOME/bin directory and type file oracle

cd $ORACLE_HOME/bin

file oracle

$ file oracle

oracle:         ELF 64-bit MSB executable SPARCV9 Version 1, dynamically linked, not stripped

For Unix OS:

          Solaris: $ /usr/bin/isainfo -kv

$  /usr/bin/isainfo -kv

64-bit sparcv9 kernel modules

Linux: uname –m

adba@premieradba bin/ $ uname -m

x86_64

For Oracle Client SQLPLUS:

% file $ORACLE_HOME/bin/sqlplus 64-bit will show 64-bit.
32-bit will show 32-bit or not specify wordsize

Check for directories

$ORACLE_HOME/lib32
$ORACLE_HOME/lib

$ ls -l $ORACLE_HOME/lib32
$ ls -l $ORACLE_HOME/lib

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