如果lsnr挂起（tnsping失败），则杀掉进程重启lsnr

如果lsnr被手动关闭（tns进程不在），不会进行任何操作。

echo `date`
echo 'The old LSNR id is:'`ps -ef|grep tnslsnr|grep -v grep|awk '{print $2}'`

RVALUE=`tnsping npmserver|grep OK|awk '{print $1}'|wc -l`
echo 'OK found:' $RVALUE

if  [ $RVALUE  != 0 ]
then
        echo 'LSNR work fine! bye'
fi

if [ $RVALUE  = 0 ]
then
    TNSCOUNT=`ps -ef|grep tnslsnr|grep -v grep|wc -l`
        if [ $TNSCOUNT != 0 ]
        then
                echo 'Kill the old LSNR process,starting LSNR...'
                ps -ef|grep tnslsnr|grep -v grep|awk '{print $2}'|xargs kill -9
                lsnrctl start
                echo 'The new LSNR id is:' `ps -ef|grep tnslsnr|grep -v grep|awk '{print $2}'`
        fi

        if [ $TNSCOUNT = 0 ]
        then
                echo 'LSNR not running,try lsnrctl start if needed!'
        fi
fi
echo '########################################'                                      
echo