postgresql does not start

[resegok]

My Postgresql does not start. Help me my command was as below

[root@erms /]# /d02/postgresql/scripts/ctl.sh start
waiting for server to start.... stopped waiting
pg_ctl.bin: could not start server
Examine the log output.
/d02/postgresql/scripts/ctl.sh : postgresql could not be started
[root@erms /]#

[resegok]

#!/bin/sh

HOSTNAME=`hostname`
POSTGRESQL_PIDFILE=/d02/alf_data/postgresql/postmaster.pid

POSTGRESQL_START="/d02/postgresql/bin/pg_ctl start -w -D /d02/alf_data/postgresql"
POSTGRESQL_STOP="/d02/postgresql/bin/pg_ctl stop -D /d02/alf_data/postgresql"

PGPORT=5430
POSTGRESQL_STATUS=""
POSTGRESQL_PID=""
PID=""
ERROR=0

get_pid() {
    PID=""
    PIDFILE=$1
    # check for pidfile
    if [ -f "$PIDFILE" ] ; then
        PID=`head -1 $PIDFILE`
    fi
}

get_postgresql_pid() {
    get_pid $POSTGRESQL_PIDFILE
    if [ ! "$PID" ]; then
        return
    fi
    if [ "$PID" -gt 0 ]; then
        POSTGRESQL_PID=$PID
    fi
}

is_service_running() {
    PID=$1
    if [ "x$PID" != "x" ] && kill -0 $PID 2>/dev/null ; then
        RUNNING=1
    else
        RUNNING=0
    fi
    return $RUNNING
}

is_postgresql_running() {
    get_postgresql_pid
    is_service_running $POSTGRESQL_PID
    RUNNING=$?
    if [ $RUNNING -eq 0 ]; then
        POSTGRESQL_STATUS="postgresql not running"
    else
        POSTGRESQL_STATUS="postgresql already running"
    fi
    return $RUNNING
}

start_postgresql() {
    is_postgresql_running
    RUNNING=$?
    if [ $RUNNING -eq 1 ]; then
        echo "$0 $ARG: postgresql  (pid $POSTGRESQL_PID) already running"
	exit
    fi
    if [ `id|sed -e s/uid=//g -e s/\(.*//g` -eq 0 ]; then
	su postgres -c "$POSTGRESQL_START"
    else
	$POSTGRESQL_START 
    fi
    sleep 3
    is_postgresql_running
    RUNNING=$?
    if [ $RUNNING -eq 0 ]; then
        ERROR=1
    fi
    if [ $ERROR -eq 0 ]; then
	echo "$0 $ARG: postgresql  started at port 5430"
	sleep 2
    else
	echo "$0 $ARG: postgresql  could not be started"
	ERROR=3
    fi
}

stop_postgresql() {
    NO_EXIT_ON_ERROR=$1
    is_postgresql_running
    RUNNING=$?
    if [ $RUNNING -eq 0 ]; then
        echo "$0 $ARG: $POSTGRESQL_STATUS"
        if [ "x$NO_EXIT_ON_ERROR" != "xno_exit" ]; then
            exit
        else
            return
        fi
    fi
    if [ `id|sed -e s/uid=//g -e s/\(.*//g` -eq 0 ]; then
        su postgres -c "$POSTGRESQL_STOP"
    else
        $POSTGRESQL_STOP
    fi
    sleep 5

    is_postgresql_running
    RUNNING=$?
    if [ $RUNNING -eq 0 ]; then
            echo "$0 $ARG: postgresql stopped"
        else
            echo "$0 $ARG: postgresql could not be stopped. Trying to perform a \"fast\" shutdown."
            if [ `id|sed -e s/uid=//g -e s/\(.*//g` -eq 0 ]; then
                su postgres -c "$POSTGRESQL_STOP -m fast"
            else
                $POSTGRESQL_STOP -m fast
            fi
            sleep 5

            is_postgresql_running
            RUNNING=$?
            if [ $RUNNING -eq 0 ]; then
                    echo "$0 $ARG: postgresql stopped"
                else
                    echo "$0 $ARG: postgresql could not be stopped."
                    ERROR=4
            fi
    fi
}

cleanpid() {
    rm -f $POSTGRESQL_PIDFILE
}

if [ "x$1" = "xstart" ]; then
    start_postgresql
elif [ "x$1" = "xstop" ]; then
    stop_postgresql
elif [ "x$1" = "xstatus" ]; then
    is_postgresql_running
    echo "$POSTGRESQL_STATUS"
elif [ "x$1" = "xcleanpid" ]; then
    cleanpid
fi

exit $ERROR

[resegok]

Caused by: org.postgresql.util.PSQLException: Connection to localhost:5430 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:262)
at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:52)
at org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:216)
at org.postgresql.Driver.makeConnection(Driver.java:404)
at org.postgresql.Driver.connect(Driver.java:272)
at org.apache.commons.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:38)
at org.apache.commons.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:582)
at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:1188)
at org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:106)
at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)
at org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider.getConnection(LocalDataSourceConnectionProvider.java:83)
at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:423)