Oracle Database Discussions

Hi,
I tried to install Oracle 10.2.0.1 on a RedHat 4 box. Both, Oracle and RedHat are 64 bit versions. The installation was fine but the database creation (with dbca) could not create the database because of this error: ORA-12547: TNS:lost contact

I can not find any errors in the installation log. Only this warnings in the make.log:

/usr/bin/ld: warning: i386 architecture of input file `/opt/oracle/oracle/product/10.2.0/db_1/sysman/lib/snmccolm.o' is incompatible with i386:x86-64 output
/usr/bin/ld: warning: i386 architecture of input file `/opt/oracle/oracle/product/10.2.0/db_1/sysman/lib/libnmccol.a(nmccole.o)' is incompatible with i386:x86-64 output
/usr/bin/ld: warning: i386 architecture of input file `/opt/oracle/oracle/product/10.2.0/db_1/sysman/lib/libnmcbuf.a(nmcbuft.o)' is incompatible with i386:x86-64 output
/usr/bin/ld: warning: i386 architecture of input file `/opt/oracle/oracle/product/10.2.0/db_1/sysman/lib/libnmcbuf.a(nmcbufw.o)' is incompatible with i386:x86-64 output
/usr/bin/ld: warning: i386 architecture of input file `/opt/oracle/oracle/product/10.2.0/db_1/sysman/lib/libnmcbuf.a(nmcbufu.o)' is incompatible with i386:x86-64 output
/usr/bin/ld: warning: i386 architecture of input file `/opt/oracle/oracle/product/10.2.0/db_1/sysman/lib/libnmcbuf.a(snmcbufm.o)' is incompatible with i386:x86-64 output
/usr/bin/ld: warning: i386 architecture of input file `/opt/oracle/oracle/product/10.2.0/db_1/sysman/lib/libnmcbuf.a(nmcbuff.o)' is incompatible with i386:x86-64 output
/usr/bin/ld: warning: i386 architecture of input file `/opt/oracle/oracle/product/10.2.0/db_1/sysman/lib//libnmadbg.a(nmadbg.o)' is incompatible with i386:x86-64 output
/usr/bin/ld: warning: i386 architecture of input file `/opt/oracle/oracle/product/10.2.0/db_1/sysman/lib//libnmadbg.a(snmadbg.o)' is incompatible with i386:x86-64 output
mv -f /opt/oracle/oracle/product/10.2.0/db_1/bin/nmccollector /opt/oracle/oracle/product/10.2.0/db_1/bin/nmccollector0
mv /opt/oracle/oracle/product/10.2.0/db_1/sysman/lib/nmccollector /opt/oracle/oracle/product/10.2.0/db_1/bin/

Has anyone an idea? Or a hint how to encircle the problem?

Best regards,
Dirk