Change password used in ComboPooledDataSource on database password rotation

Question

I have a Spring application which uses ComboPooledDataSource to define database credentials which is used in LocalContainerEntityManagerFactoryBean. On application startup Database credentials are fetched from Hashicorp vault and used to create connection with database. When the database password changed, have problem in connecting with database. Following is my DataSource and EntityManagerFactory config.

<!-- DataSource JavaConfig -->

@Configuration
public class DataSourceConfig
{
@Bean
public DataSource dataSource()
{
    try {
        ComboPooledDataSource dataSource = new ComboPooledDataSource();
        dataSource.setUser(getUsername());
        dataSource.setPassword(getPassword());
        dataSource.setDriverClass(driverClassName);
        dataSource.setJdbcUrl(jdbcUrl);
        dataSource.setMinPoolSize(minPoolSize);
        dataSource.setMaxPoolSize(maxPoolSize);
        dataSource.setCheckoutTimeout(checkoutTimeout);
        dataSource.setMaxIdleTime(maxIdleTime);
        dataSource.setIdleConnectionTestPeriod(idleConnectionTestPeriod);
        dataSource.setAcquireRetryAttempts(acquireRetryAttempts);
        dataSource.setAcquireRetryDelay(acquireRetryDelay);
        return dataSource;
    } catch (Exception ex) {
        LOGGER.error("Error occurred while initializing datasource ", ex);
    }
    return null;
  }
}

<!-- Transaction Manager -->
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
    <property name="entityManagerFactory" ref="entityManagerFactory"/>
    <property name="dataSource" ref="dataSource"/>
</bean>


<!-- Entity manager factory -->
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" depends-on="dbMigrationService">
    <property name="dataSource" ref="dataSource"/>
    <property name="persistenceUnitManager" ref="persistenceUnitManager"/>
    <property name="jpaVendorAdapter">
        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
            <property name="showSql" value="${hibernate.showSql}"/>
            <property name="databasePlatform" value="${hibernate.dialect}"/>
        </bean>
    </property>
    <property name="jpaProperties">
        <props>
            <!-- batch writing -->
            <prop key="hibernate.jdbc.batch_size">${hibernate.jdbc.batch_size}</prop>
            <prop key="hibernate.order_inserts">${hibernate.order_inserts}</prop>
            <prop key="hibernate.order_updates">${hibernate.order_updates}</prop>
            <prop key="hibernate.enable_lazy_load_no_trans">true</prop>
        </props>
    </property>
</bean>

I'm able to fetch the changed database password from vault. But i'm not sure how to use the new password in DataSource to solve the connectivity problem without restarting the application. Can someone helpme with this? Thanks.