Websphere liberty 19 configure jndi datasource - websphere-liberty

Question

I have deployed two ears and to one of them i do not have access.
There is a file
application-web-bnd.xml where is reference to datasource
In my server.xml file i have defined datasource
<application id="MyCustomApp.war" location="F:\programming\source\MyCustomApp\target\MyCustomApp" name="MyCustomApp" type="war">
<application-bnd>
<security-role name="admin">
<special-subject type="ALL_AUTHENTICATED_USERS" />
</security-role>
<data-source binding-name="jdbc/Sample" name="java:comp/env/jdbc/db" />
</application-bnd>
</application>
<dataSource id="Sample" jndiName="jdbc/Sample" type="javax.sql.DataSource">
<jdbcDriver>
<library name="JdbcJarFiles">
<fileset dir="${shared.resource.dir}" includes="db2jcc4.jar, db2jcc_license_cisuz.jar, db2jcc_license_cu.jar, pdq.jar, pdqmgmt.jar" />
<folder dir="${shared.resource.dir}" />
</library>
</jdbcDriver>
</dataSource>
In code in ear where i do not have access there is initialContext
java:comp/env/jdbc/db.
Reference to data source exists but datasource does not exists.
I do not have access to web.xml for create reference .
I do not have ide how override it.
Could You help ?
My ear looks that:
<module>
<ejb>PRE-BF.jar</ejb>
</module>
<module>
<web>
<web-uri>PRE-WS.war</web-uri>
<context-root>/PRE-WS</context-root>
</web>
</module>
<module>
<web>
<web-uri>PRE-RS.war</web-uri>
<context-root>/PRE-RS</context-root>
</web>
</module>
<module>
<web>
<web-uri>PRE-PF.war</web-uri>
<context-root>/PRE-PF</context-root>
</web>
</module>

Answer 1

You can override bindings in server configuration as follows. (This will require having your application defined in server configuration rather than dropins).
<application location="MyApp.war">
<web-bnd moduleName="MyApp">
<resource-ref name="jdbc/Sample" binding-name="java:comp/env/jdbc/db"/>
</web-bnd>
</application>