Oacore Service Not Starting

Error: While starting oacore service we are getting below error

Caused By: javax.security.auth.login.FailedLoginException: [Security:090303]Authentication Failed: User weblogic weblogic.security.providers.authentication.LDAPAtnDelegateException: [Security:090295]caught unexpected exception

Solution:

Remove the ldap folder from below location

                       

$DOMAIN_HOME/servers/oacore_server1/data

Retry the issue

Password Changing Steps for Operations User

How to change the password for operations user in Oracle EBS.

When we are trying to change the operations user password using FNDCPASS command, we will get the below error notifications.

$FNDCPASS apps/apps 0 Y system/manager USER operations  password
Log filename : L7746964.log

Report filename : O7746964.out

$cat L7746964.log
+---------------------------------------------------------------------------+
Application Object Library: Version : 12.0.0

Copyright (c) 1979, 1999, Oracle Corporation. All rights reserved.

 module:
+---------------------------------------------------------------------------+

Current system time is 09-OCT-2018 15:04:42

+---------------------------------------------------------------------------+

This password is not managed by Oracle Applications so it can not be changed here.

+---------------------------------------------------------------------------+
Concurrent request completed
Current system time is 09-OCT-2018 15:04:42

+---------------------------------------------------------------------------+

Solution:

We have to change the operations user password through EBS Application url. 
System Administrator -> User -> Define