How to solve the Linux AdminUI error "wrong username or password"

Products

• CA Single Sign On Secure Proxy Server (SiteMinder)
• CA Single Sign On SOA Security Manager (SiteMinder)
• CA Single Sign-On

Issue/Introduction

Issue : 

Running AdminUI, when trying to login, the Browser returns error :

"wrong username or password"

Recently, I have installed RedHat patches on the OS;

Environment : 

AdminUI 12.52SP1CR02 on RedHat 6:

Cause :

Applying the RedHat patches, you rebooted the machine. The reboot removed the symlink you had between /dev/random and /dev/urandom.

Resolution :

You have to stop the AdminUI, make the symlink between /dev/random and /dev/urandom and start the AdminUI to solve the issue.

Additional Information :  

https://docops.ca.com/ca-single-sign-on-12-52-sp1/en/installing/administrative-user-interface-installation/install-and-register-the-administrative-ui-on-unix-stand-alone

Verify the UNIX UI Host System Requirements

• Red Hat Linux: x86 or x64, 700 MHz or better.
  The Red Hat 6 operating system relies on entropy for performance. Before you install the component, increase entropy. Otherwise, the installation takes an exceedingly long time, and the Administrative UI responses slow down during runtime. We recommend using the following command: 

  mv /dev/random /dev/random.org

  ln -s /dev/urandom /dev/random

Environment

Release:
Component: SMAUI