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Check Oracle client 32 bit or 64 bit?

Oracle Database Tips by Donald BurlesonJuly 28, 2015

Question:  I want to know of my installation of an Oracle client is 32 bit or 64 bit.  How can you tell if a PC client is running 32bit or 64bit Oracle client installation?

Answer: There are two areas; checking the PC client and checking the Oracle client software installation.

Checking PC client:  Because a 64 client will not run on a 32 bit PC, you can check to see if the PC is 32 or 64 bit in Windows in:

control panel ==> system

operating system   64 bit operating system

In cases where you have a 32-bit on a 64-bit PC, you can check in installation directory to see of the PC client installation is 32 or 64 bit..

Checking Oracle client software:  There are three methods for checking the Oracle client software.  Windows has a different lib directory for 32-bit software and 64-bit software.  The fastest way to see if an Oracle Client is 64bit or 32bit, too look for "lib32" and "lib" folders under ORACLE_HOME.

If the Oracle Client is 32 bit, it will contain a "lib" folder; but if it is a 64 bit Oracle Client it will have both "lib" and "lib32" folders.

Also, starting in Oracle 11.2.0.1, the client version for 64-bit and the Oracle client for 32-bit are shipped separately, and there is an $ORACLE_HOME/lib64 directory.

$ORACLE_HOME/lib/     ==> 32 bit
$ORACLE_HOME/lib64 ==>  64 bit

Or

$ORACLE_HOME/lib/     ==> 64 bit
$ORACLE_HOME/lib32  ==> 32 bit

Also see: how to tell if my Oracle server is 32-bit or 64-bit.


 
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