Steps to change Apps password for EBS 12.2

Follow all the below steps to change apps password in 12.2 instance. Passwords for all the 3 schemas APPS, APPLSYS and APPS_NE will be changed together while changing APPLSYS 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

• Log in to WLS Administration Console.

•  Click Lock & Edit in Change Center

•  In the Domain Structure tree, expand Services, then select Data Sources

•  On the "Summary of JDBC Data Sources" page, select EBSDataSource

•  On the "Settings for EBSDataSource" page, select the Connection Pool tab.

• Enter the new password in the "Password" and "Confirm Password" field
•  Click Save
                                                                                                               
•  Click Activate Changes in Change Center

Reference
Steps to change the APPS, APPLSYS, and APPS_NE password using FNDCPASS or AFPASSWD for EBS 12.2 (Doc ID 1674462.1)