Oracle 11g upgrade issue

Dear Friends,

We are running oracle 10.2.0.4 and HP-UX 11i v3. We have upgraded oracle 11g. Upgrade has completed successfully and after that We have installed the Oracle 11g client.

Now we are trying to execute command sqlplus "/ as sysdba" but it is giving the error message as below.

jkepdvr:oraepd 1> sqlplus "/ as sysdba"

/usr/lib/hpux64/dld.so: Unable to find library 'libsqlplus.so'.

Killed

Regards

Ganesh Datt Tiwari