Patch 6241631 (11i.ATG_PF.H.RUP7) failure - connection refused

Hi,
Apps 11.5.10.2

Unable to get the database connection using schema username/passwordIo exception: Connection refused

Problem Description
---------------------------------------------------
While applying the Patch in RAC environment we are getting below error in worker log file.

Calling /tst/appluat/uatcomn/util/java/1.4/j2sdk1.4.2_04/bin/java ...
Exception occured
             Copyright (c) 2003 Oracle Corporation
                Redwood Shores, California, USA
        XDF(XML Object Description File) Comparison Utility
                       Version 1
NOTE: You may not use this utility for custom development
     unless you have written permission from Oracle Corporation.

Unable to get the database connection using schema username/passwordIo exception: Connection refused(DESCRIPTION=(TMP=)(VSNNUM=169870336)(ERR=12514)(ERROR_STACK=(ERROR=(CODE=12514)(EMFI=4))))