I d o not know what I am missing.
Permission issue? The file does exists but I am getting the following error
Any idea where else to look?

Starting /opt/app/d2rsm1d1/oracle/product/10.2.0/bin/tnslsnr: please wait...

TNSLSNR for Solaris: Version - Production
NL-00280: error creating log stream /opt/app/d2rsm1d1/oracle/product/10.2.0/netw
NL-00278: cannot open log file
SNL-00016: snlfohd: error opening file
Solaris Error: 2: No such file or directory

Listener failed to start. See the error message(s) above...