Different Methods to find or Check whether the installed Oracle Client Software is 32 bit or 64 bit in Linux / Unix Environments

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 Task
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To find whether the installed Client Software is 32 bit or 64 bit in Linux / Unix Environments

$ export ORACLE_HOME=/u01/app/oracle/product/11.2.0/client_1

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Method 1 :
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Using ORACLE_HOME properties File
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$ cat $ORACLE_HOME/inventory/ContentsXML/oraclehomeproperties.xml | grep -i architecture

     

From above output, we can find its 64 bit, 32 means then the client software is 32 bit.

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Method 2 :
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Using File OS command
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$ file $ORACLE_HOME/bin/sqlplus

/u01/app/oracle/product/11.2.0/client_1/bin/sqlplus: ELF 64-bit LSB executable, AMD x86-64, version 1 (SYSV), for GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux 2.6.9, not stripped

From above output, we can find x86-64, so this is 64 bit version.

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Method 3 :
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From lib directories created during installation.
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$ ls -l $ORACLE_HOME | grep lib

drwxr-xr-x  2 oracle oinstall 4096 Jun 26 14:26 jlib
drwxr-xr-x  3 oracle oinstall 4096 Jun 26 14:26 lib

If the two directories $ORACLE_HOME/lib32 and $ORACLE_HOME/lib exist, then it is 64 bit client.

If you have only $ORACLE_HOME/lib you need to use method 1 as there are client versions (11.2) where $ORACLE_HOME/lib32 directory does not exist on 64-bit client installations.

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Method 4 :
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Using Perl Version
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$ perl -v

This is perl, v5.8.8 built for x86_64-linux-thread-multi

Note: Perl is installed according to the bit version of the ORACLE_HOME but not the OS bit version.

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