500 Internal Server Error Servlet error: An exception occurred. The current application deployment descriptors do not allow for including it in this response. Please consult the

Issue :

Login page gives error after bringing up apps service.
In Firefox, the EBS page https://ebsxxxxx.domain.com/OA_HTML/AppsLogin shows generic error
500 Internal Server Error
Servlet error: An exception occurred. The current application deployment descriptors do not allow for including it in this response. Please consult the application log for details.

Cause:

One of the oacore services was not coming (or) it takes more time to come up (or) it there is a intermittent on oacore service.

Yesterday issue was caused due to recent change in production applsyspub password and we havent updated the applsyspub password after application clone.

Fix:

1) Bring down the application services in cloned instance completely

2) change APPLSYSPUB's password in cloned instance

    1. Modify $CONTEXT_FILE (on each node) and put the new password in s_gwyuid_pass.
    2. $ FNDCPASS APPS/apps_PWD 0 Y SYSTEM/[system_pwd] ORACLE APPLSYSPUB New_PWD

        If it works, the Lxxxxxx.log shall say
        Working...
        Password is changed successfully for user APPLSYSPUB.
        AFPASSWD completed successfully. (PROGNAME=FNDCPASS)

    3. Run autoconfig.sh on apps node.

3) Bring up the application services and the issue is fixed now.:)