XDOloader jobs are extremely slow during EBS Upgrade from11i to 12.1.1

When attempting to upgrade from EBS 11i to R12.1.1 on Linux Server the upgrade patch was extremely slow while processing XDOloader jobs and the following error encountered in Alert log file.

WARNING: inbound connection timed out (ORA-3136)

Solution:

To implement the solution, please execute the following steps:

a - Stop upgrade

b - rename /dev/random to /dev/random_org for example

c - Create a link to /dev/urandom called /dev/random

d - Restart the upgrade

After R12 upgrade when we open the URL Login screen is not coming

After EBS 11i to R12 Upgrade when we open the URL login screen is not coming.
It is because we have SSO Implemented on our Prod 11i Application.

 Solution:

Cannot Login: mod_oc4j: Response status=499 and reason=Oracle SSO, but failed to get mod_osso global context. [ID 563940.1]

Issue while opening the form after R12 Installation

After Fresh Installation of Oracle R12 or After Very First Cloning on Linux Server If you face this issue. Check RPM openmotif21-2.1.30-11.EL5.i3861. If could be one of the reason of this issue.

Error in Logfile:

13/06/13 13:22:22.473 formsweb: 10.1.3.4.0 Started

13/06/13 13:24:40.576 formsweb: ListenerServlet init()

13/06/13 13:24:41.683 formsweb: Forms session <1> aborted: runtime process failed during startup with errors /d01/app/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

 13/06/13 13:24:41.684 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)

        at oracle.forms.servlet.RunformProcess.dataToRunform(Unknown Source)

        at oracle.forms.servlet.RunformSession.dataToRunform(Unknown Source)

        at oracle.forms.servlet.ListenerServlet.doPost(Unknown Source)

        at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)

        at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)

        at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0) ].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:713)

        at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0) ].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:370)

        at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0) ].server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:871)

        at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0) ].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:453)

        at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0) ].server.http.AJPRequestHandler.run(AJPRequestHandler.java:313)

        at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0) ].server.http.AJPRequestHandler.run(AJPRequestHandler.java:199)

        at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)

        at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0) ].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)

        at java.lang.Thread.run(Thread.java:619)

Solution: Check RPM openmotif21-2.1.30-11.EL5.i3861

              If missing install it