FRM-92101: There was a failure in the Forms Server during startup

Version:

Oracle R12 12.1.3 in OEL 5 64 bit

Issue: 

Forms is not accessible, on accessing forms from URL it threw error. 
All the services were started up using adstrtal.sh script and there was no failures detected at the script startup time

Error:

The following error was reported on accessing forms URL.

FRM-92101: There was a failure in the Forms Server during startup. This could happen due to invalid configuration. 

Analysis:

Checked the forms log files available under $LOG_HOME/ora/10.1.3/j2ee/forms/forms_default_group_1. From the application.log, the error messages were identified

15/02/02 23:52:34.437 formsweb: 10.1.3.4.0 Started
15/02/02 23:57:03.843 formsweb: ListenerServlet init()
15/02/02 23:57:05.159 formsweb: Forms session <1> aborted: runtime process failed during startup with errors /u01/E-BIZ/apps/tech_st/10.1.2/bin/frmweb: error while loading shared libraries: libXm.so.2: cannot open shared object file: No such file or directory

15/02/02 23:57:05.159 formsweb: Forms session <1> exception stack trace:
oracle.forms.engine.RunformException: Forms session <1> failed during startup: no response from runtime process
        at oracle.forms.servlet.RunformProcess.connect(Unknown Source)

Went through the following Oracle support docs, and identified that the error is due to missing RPM
The RPM which was missing is openmotif21

After EBS Fresh Install accessing any Forms Responsibility fails with error "FRM-92101: Forms Server" (Doc ID 1192205.1)
Check RPMs from Oracle E-Business Suite Installation and Upgrade Notes Release 12 (12.1.1) for Linux x86-64 (Doc ID 761566.1) 

Solution:

1) Installed the missing RPM after downloading it form a site. 

In OEL 5, the missing RPM is openmotif21-2.1.30-11.EL5.i386.rpm. you can verify the document ID (402310.1 for 32 bit and 416305.1 for 64 bit) for correct RPM required for your platform. 

The RPM, openmotif21-2.1.30-11.EL5.i386.rpm is not part of the OS distribution media and must be downloaded separately

[root@Appsnode tmp]rpm -ivh openmotif21-2.1.30-11.EL5.i386.rpm
Preparing...                ########################################### [100%]
  1:openmotif21           ########################################### [100%]
[root@Appsnode  tmp]# rpm -qa|grep openmotif21

openmotif21-2.1.30-11.EL5

Note:
For OEL 6, the rpm required is openmotif21-2.1.30-11.EL6.i686.rpm

2) Restart the middletier after applying the package.