How to Find Database is 32 bit or 64 Bit Login to command prompt using oracle user. Issue the following command. $ file $ORACLE_HOME/bin/sqlplus you should see output like /u01/db/bin/sqlplus: ELF 32-bit LSB executable 80386 Version 1, dynamically linked, not stripped If your oracle is 32 bit you should see output like oracle: ELF 32-bit MSB executable ----------------------------------------------------------------------------------------------