Apps password Change for EBS 12.2:

All three schema's APPS, APPLSYS and APPS_NE password  will be changed while changing APPLSYS password.
steps to change apps password:

1. Shut down the application tier services
2. Change the APPLSYS password
FNDCPASS apps/<apps_pw> 0 Y SYSTEM/<system_pw> SYSTEM APPLSYS <new_password>
3.Run Autoconfig on Application Tier with newly changed password
4. Start the Adminserver
cd $ADMIN_SCRIPTS_HOME
./adadminsrvctl.sh start
5. Change the "apps" password in WLS Datasource as follows:
(i)Log in to WLS Administration Console.
(ii)Click Lock & Edit in Change Center
(iii)In the Domain Structure tree, expand Services, then select Data Sources
(iv)On the "Summary of JDBC Data Sources" page, select EBSDataSource
(v)On the "Settings for EBSDataSource" page, select the Connection Pool tab.
(vi)Enter the new password in the "Password" and "Confirm Password" field.
(vii)Click Save
(viii)Click Activate Changes in Change Center.

Oracle Doc ID 1674462.1 using FNDCPASS or AFPASSWD.