How do I change the database password for IdentityAccessManager?

Document ID : KB000076553
Last Modified Date : 09/04/2018
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Introduction:
How do I change the database password for IdentityAccessManager? Customer has a requirement that they have to change the DATABASE PASSWORD every 6 months.  How do we edit this ?  or re-use this file? 
Steps followed:
Configure DevTest 10.3 for mySQL  
Configure VS Catalog and Identity Manager  & Access Manager for mySQL 

It will update the Datasource.properties file as seen below 

#Updated by DatasourceUpdater 
#Wed Apr 04 14:24:31 EDT 2018 
JDBC_DRIVER_CLASS=com.mysql.jdbc.Driver 
DATABASE_URL=jdbc\:mysql\://abrsh01N218001\:3306/vscatalog?useSSL\=false 
JDBC_DRIVER_PATH=C\:\\Program Files\\CA\\DevTest\\lib\\shared\\mysql-connector-java-5.1.25-bin.jar 
DATABASE_PASSWORD=26bcec2e2005094f 
DATABASE_USER=devtest 
JDBC_DRIVER_NAME=mysql 
JDBC_DRIVER_MODULE_NAME=com.mysql.jdbc.driver

The password field is encrypted.  

Do we need to run the installer again to update this file every 6 months?  
Environment:
DevTest 10.3 or newer
Instructions:
To change the password in datasource properties files : 
The user can run DatasourceUpdater utility in <INSTALL_DIR>/IdentityAccessManager/bin/   to update the password.
As this utility can also be used for changing the database used by IAM, it will prompt for the database details. The datasource.properties file is generated by the utility and it is used internally.