Unable to restart the Postgres server and can not kill the process
<p>Due to a sudden power cut PostGreSQL 9.3 database server (CentOS) was down , I tried to start/stop/restart postgres server getting  this error:</p>

<pre><code>[root@aca80123 ~]# service postgresql-9.3 restart 

    Restarting PostgreSQL 9.3: 
    pg_ctl: PID file "/opt/PostgreSQL/9.3/data/postmaster.pid" does not exist
    Is server running?
    starting server anyway
    waiting for server to start........ stopped waiting
    pg_ctl: could not start server
    Examine the log output.
    PostgreSQL 9.3 did not start in a timely fashion, please see /opt/PostgreSQL/9.3/data/pg_log/startup.log for details
</code></pre>

<p>Below messages are in the startup.log file </p>

<pre><code>2016-03-01 23:24:18 IST LOG:  redirecting log output to logging collector process
2016-03-01 23:24:18 IST HINT:  Future log output will appear in directory "pg_log".
</code></pre>

<p>I found the stackOverflow questions  but there are no solutions.
<a href="https://stackoverflow.com/questions/22822893/postgresql-service-unable-to-stop-start-restart">postgresql-service-unable-to-stop-start-restart</a>
<a href="https://stackoverflow.com/questions/31460644/unable-to-restart-postgresql-server">unable-to-restart-postgresql-server</a></p>