Hi Neil:

I deeply appreciated your advice.
I could not find $ORACLE_HOME/lib64/  in my system.
I found the libobk.sl in the $ORACLE_HOME/lib/ and I remove it.

I use ln command to link libobk.sl :
  ln -s /usr/libobk.sl/pa20_64/libobk.sl libobk.sl
It doese't work.
so I use the make command :
  make -f ins_rdbms.mk LLIBMM=/usr/lib/pa20_64/libobk.sl ioracle
It failed again.

Is it necessary that I must have $ORACLE_HOME/lib64/ directory in my system
?

Can I make a soft link : $ORACLE_HOME/lib/libobk.sl  ----->
/usr/lib/pa20_64/libobk.sl
to substitute  $ORACLE_HOME/lib64/libobk.sl  ----->
/usr/lib/pa20_64/libobk.sl ?

Thanks

Michael Hsu