Server not Starting

Hi All,

Please find the below scenario, and suggest me...

Trying to start the server, but not starting.
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[postgres(at)dbarhel564 mypg]$ pg_ctl -D /usr/local/pgsql/mypg/ start
server starting
[postgres(at)dbarhel564 mypg]$ psql -p 5432 -d postgres
psql: could not connect to server: No such file or directory
Is the server running locally and accepting
connections on Unix domain socket "/tmp/.s.PGSQL.5432"?
[postgres(at)dbarhel564 mypg]$

Checked in the Data Directory
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[postgres(at)dbarhel564 mypg]$ ls
arch db.dmp mypg.dmp mytablespace pg_hba.conf pg_log
pg_stat_tmp pg_tblspc PG_VERSION postgresql.conf
base global mypgtar.tar pg_clog pg_ident.conf pg_multixact
pg_subtrans pg_twophase pg_xlog postmaster.opts
[postgres(at)dbarhel564 mypg]$
I havnt find the postmaster.pid here.

Could you please guide me.

Regards
Raghavendra