@Swaapnika Guntaka
As of HDP 2.5.3, you need to install the Berkeley DB prior to upgrading or installing Falcon. That might be the problem you are encountering. You might try the following: [Updated content below]
1.Download the required Berkeley DB implementation file.
wget –O je-5.0.73.jar http://search.maven.org/remotecontent?filepath=com/sleepycat/je/5.0.73/je-5.0.73.jar
2.Log in to the Ambari server with administrator privileges.
su – root
3.Copy the file to the Ambari server share folder.
cp je-5.0.73.jar /usr/share/
4.Set permissions on the file to owner=read/write, group=read, other=read.
chmod 644 /usr/share/je-5.0.73.jar
5.Configure the Ambari server to use the Berkeley DB driver.
ambari-server setup --jdbc-db=bdb --jdbc-driver=/usr/share/je-5.0.73.jar
6.Restart the Ambari server.
ambari-server restart
7.Restart the Falcon service from the Ambari UI.
You need to have administrator privileges in Ambari to restart a service.
1.In the Ambari web UI, click the Services tab and select the Falcon service in the left Services pane.
2.From the Falcon Summary page, click Service Actions > Restart All.
3.Click Confirm Restart All.
When the service is available, the Falcon status displays as Started on the Summary page.
Further information and manual install instructions are available in an article at https://community.hortonworks.com/articles/78274/prerequisite-to-installing-or-upgrading-falcon.html.
