I am trying to install SMC on solaris 10What version of Solaris 10 are you using? You need 11/06 (aka "Update 3") or later. Also, it looks like this is on a V210: how much memory and swap do you have ([requirements here|http://docs.sun.com/app/docs/doc/820-2215/deployment-72?l=en&a=view])? And have you [edited your /etc/project file|http://docs.sun.com/app/docs/doc/820-2216/chapter2-1000?l=en&a=view] to adjust the shared memory settings?
smcdatabase service is always in maintenance mode.It would be interesting to see what that service log says. Look in /var/svc/log/application-management-sunmcdatabase:default.log for clues.
/var/opt/SUNWsymon/install/guibased-setup.1285765588453.sh: /var/opt/SUNWsymon/db/data/SunMC/pg_hba.conf: cannot createIs there any reason why SunMC may not be able to write to /var (or /var/opt/SUNWsymon)? Maybe portions of /var are read-only (shared from a global zone, or over NFS)?