EMD pingOMS error: unable to connect to http server [handshake has no peer]

While upgrading the OEM Agent from 12c to 13c, I was getting the below error. 

I tried all sort of scenarios(such as securing agent, resync agent etc) but all the in vain.

Finally got to know that its due to BUG 22568679 : After upgrade of agents from 12c (12.1.0.5) to 13c (13.1.0.0.0) Agents get stuck 

This issue is encountered if we are using Custom Certificate. This issue is caused due to the wallet checks being more strict between JDK 1.6 and JDK 1.7

Solution: 
To resolve the issue please apply Patch 22568679: After upgrade of agents from 12c (12.1.0.5) to 13c (13.1.0.0.0) Agents get stuck 


Error encountered:

linux01.test.com(oracle:NONE)/u03/app/oracle/agent_inst/bin: ./emctl status agent
Oracle Enterprise Manager Cloud Control 13c Release 1
Copyright (c) 1996, 2015 Oracle Corporation.  All rights reserved.
---------------------------------------------------------------
Agent Version          : 13.1.0.0.0
OMS Version            : (unknown)
Protocol Version       : 12.1.0.1.0
Agent Home             : /u03/app/oracle/agent_inst
Agent Log Directory    : /u03/app/oracle/agent_inst/sysman/log
Agent Binaries         : /u03/app/oracle/agent_13.1.0.0.0
Core JAR Location      : /u03/app/oracle/agent_13.1.0.0.0/jlib
Agent Process ID       : 1769
Parent Process ID      : 1668
Agent URL              : https://linux01:1830/emd/main/
Local Agent URL in NAT : https://linux01:1830/emd/main/
Repository URL         : https://omshost.test.com:4903/empbs/upload
Started at             : 2016-05-10 23:07:34
Started by user        : oracle
Operating System       : Linux version 2.6.32-504.16.2.el6.x86_64 (amd64)
Number of Targets      : 16
Last Reload            : (none)
Last successful upload                       : (none)
Last attempted upload                        : (none)
Total Megabytes of XML files uploaded so far : 0
Number of XML files pending upload           : 9
Size of XML files pending upload(MB)         : 0.01
Available disk space on upload filesystem    : 93.07%
Collection Status                            : Collections enabled
Heartbeat Status                             : OMS is unreachable
Last attempted heartbeat to OMS              : 2016-05-10 23:11:24
Last successful heartbeat to OMS             : (none)
Next scheduled heartbeat to OMS              : 2016-05-10 23:11:54

---------------------------------------------------------------
Agent is Running and Ready
linux01.test.com(oracle:NONE)/u03/app/oracle/agent_inst/bin: ./emctl pingOMS
Oracle Enterprise Manager Cloud Control 13c Release 1
Copyright (c) 1996, 2015 Oracle Corporation.  All rights reserved.
---------------------------------------------------------------
EMD pingOMS error: unable to connect to http server at https://omshost.test.com:4903/empbs/upload. [handshake has no peer]


linux01.test.com(oracle:NONE)/u03/app/oracle/agent_inst/bin: ./emctl upload agent
Oracle Enterprise Manager Cloud Control 13c Release 1
Copyright (c) 1996, 2015 Oracle Corporation.  All rights reserved.
---------------------------------------------------------------
EMD upload error:full upload has failed: uploadXMLFiles skipped :: OMS version not checked yet. If this issue persists check trace files for ping to OMS related errors. (OMS_DOWN)