Bash – “Failed to start SYSV” when starting self-made service

I'm trying to set up a service, on root, that will automatically start monetdb database after system startup because monetdb doesn't provide such mechanism. I've created /etc/init.d/monetdb script file:

#!/bin/sh
#
# /etc/init.d/monetdb
# Subsystem file for "MonetDB" starter
#
# chkconfig: 2345 95 05
#
# processname: MonetDB
# pidfile: /var/run/MonetDB.pid

. /etc/init.d/functions

case "$1" in
start)
        su - monetka -c ". start.sh"

        touch /var/lock/subsys/monetdb
        ;;
stop)
        su - monetka -c ". stop.sh"

        rm -f /var/lock/subsys/monetdb
        ;;
status)
        status monetdb
        ;;
restart|reload|condrestart)
        /etc/init.d/monetdb stop
        /etc/init.d/monetdb start
        ;;
*)
        echo $"Usage: $0 {start|stop|restart|reload|status}"
esac
exit 2

I'm using self-made start.sh and stop.sh scripts located on monetka user which are executing fine each time. But when I want to start my service I'm getting an error and the following information:

monetdb.service - SYSV: MonetDB starter
   Loaded: loaded (/etc/rc.d/init.d/monetdb)
   Active: failed (Result: exit-code) since śro 2015-04-29 14:36:30 CEST; 16min ago
  Process: 5390 ExecStart=/etc/rc.d/init.d/monetdb start (code=exited, status=2)

kwi 29 14:36:30 yamny.centOS systemd[1]: Starting SYSV: MonetDB starter...
kwi 29 14:36:30 yamny.centOS su[5391]: (to monetka) root on none
kwi 29 14:36:30 yamny.centOS monetdb[5390]: [śro, 29 kwi 2015, 14:36:30 CEST] MonetDB: dbfarm jest już ur...miona
kwi 29 14:36:30 yamny.centOS monetdb[5390]: [śro, 29 kwi 2015, 14:36:30 CEST] MonetDB: baza demo jest już...miona
kwi 29 14:36:30 yamny.centOS systemd[1]: monetdb.service: control process exited, code=exited status=2
kwi 29 14:36:30 yamny.centOS systemd[1]: Failed to start SYSV: MonetDB starter.
kwi 29 14:36:30 yamny.centOS systemd[1]: Unit monetdb.service entered failed state.

Also, according to the report above, start.sh script is doing fine (as I stated before).

What I did so far:

1. Created /etc/init.d/monetdb script on root
2. Added service with chkconfig --add monetdb
3. Start the service with systemctl start monetdb.service