We are on AIX, but this may work for Sun also:
We put FPATH=… and QUOVADX_INSTALL_DIR=… in our /etc/environment file. (Actually our 5.3 installation did most of this.)
Our crontab entries look like
0 3 * * * setroot; scriptname
If the script needs to run for a particular site (other than the default site), we use
0 3 * * * setroot; setsite mysite; scriptname
- Mark Thompson
HealthPartners