service 'postmaster' failed: signal 12 raised

Dear admin,

I follow the offical tutorial to compile pgsql7.4.11 under cygwin on xp
sp2, every things work fine, I can initdb and startup postmaster -D path -i.

but when I try to use cygrunsrv -I postmaster -p /usr/bin/postmaster -a
"-D /usr/share/postgresql/data -i" -y cygserver -s INT -u postgres –o
...the service cannot startup , and event log display "service
'postmaster' failed: signal 12 raised " ...what's that problem? I'm make
sure cygserver running fine and I can find it on process explorer. the
user postgres was also assigned to the service group.

good day.

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