Spring Boot Dual data configuration, unable to reconnect after connection lost - spring

Question

I am working on application written in spring Boot 1.5.3. I have two data source which are configured as below.
Main connection
spring.datasource.driverClassName = org.postgresql.Driver
spring.datasource.url = jdbc:postgresql://xxx.xxx.xxx.xx:5432/mydb
spring.datasource.username = xxxx
spring.datasource.password = xxxx
spring.jpa.properties.hibernate.default_schema=test
# Number of ms to wait before throwing an exception if no connection is available.
spring.datasource.tomcat.max-wait=10000
# Maximum number of active connections that can be allocated from this pool at the same time.
spring.datasource.tomcat.max-active=150
spring.datasource.tomcat.max-idle=30
spring.datasource.tomcat.min-idle=2
spring.datasource.tomcat.initial-size=3
# Validate the connection before borrowing it from the pool.
spring.datasource.tomcat.test-on-borrow=true
spring.datasource.tomcat.test-on-connect=true
spring.datasource.time-between-eviction-runs-millis=60000
#spring.datasource.tomcat.validation-query-timeout=1000
spring.datasource.tomcat.validation-query=SELECT 1
spring.datasource.tomcat.validation-interval=1000
spring.datasource.tomcat.remove-abandoned=true
spring.datasource.tomcat.remove-abandoned-timeout=55
spring.datasource.tomcat.test-while-idle=true
spring.datasource.tomcat.min-evictable-idle-time-millis = 55000
spring.datasource.tomcat.time-between-eviction-runs-millis = 34000
Second Connection
spring.rdatasource.driverClassName = org.postgresql.Driver
spring.rdatasource.url = jdbc:postgresql://xxx.xxx.xxx.xx:5432/mydb1
spring.rdatasource.username = xxxx
spring.rdatasource.password = xxxx
spring.jpa.properties.hibernate.default_schema=test
# Number of ms to wait before throwing an exception if no connection is available.
spring.rdatasource.tomcat.max-wait=10000
# Maximum number of active connections that can be allocated from this pool at the same time.
spring.rdatasource.tomcat.max-active=150
spring.rdatasource.tomcat.max-idle=30
spring.rdatasource.tomcat.min-idle=2
spring.rdatasource.tomcat.initial-size=3
# Validate the connection before borrowing it from the pool.
spring.rdatasource.tomcat.test-on-borrow=true
spring.rdatasource.tomcat.test-on-connect=true
spring.rdatasource.time-between-eviction-runs-millis=60000
#spring.rdatasource.tomcat.validation-query-timeout=1000
spring.rdatasource.tomcat.validation-query=SELECT 1
spring.rdatasource.tomcat.validation-interval=1000
spring.rdatasource.tomcat.remove-abandoned=true
spring.rdatasource.tomcat.remove-abandoned-timeout=55
spring.rdatasource.tomcat.test-while-idle=true
spring.rdatasource.tomcat.min-evictable-idle-time-millis = 55000
spring.rdatasource.tomcat.time-between-eviction-runs-millis = 34000
I am working in in VPN environment. When I run application, application is working fine. But the issue starts when I disconnect the VPN and reconnect the VPN.again, my application won't reconnect to data source again. Instead I always getting exception.
But working single database when leave connection handling to spring itself and I do not perform any database configuration.
Update
#Configuration
#PropertySource({ "classpath:application.properties" })
#EnableJpaRepositories(
basePackages = {"com.services.persistence"},
entityManagerFactoryRef = "entityManager",
transactionManagerRef = "transactionManager"
)
#ComponentScan("com.services.persistence")
#EnableTransactionManagement
public class DBConfig {
#Autowired private Environment env;
#Bean
#Primary
public LocalContainerEntityManagerFactoryBean entityManager() {
LocalContainerEntityManagerFactoryBean em
= new LocalContainerEntityManagerFactoryBean();
em.setDataSource(userDataSource());
em.setPackagesToScan(
new String[] { "com.services.persistence", "com.services.persistence.pojo" });
HibernateJpaVendorAdapter vendorAdapter
= new HibernateJpaVendorAdapter();
em.setJpaVendorAdapter(vendorAdapter);
HashMap<String, Object> properties = new HashMap<>();
// properties.put("hibernate.hbm2ddl.auto",
// env.getProperty("hibernate.hbm2ddl.auto"));
properties.put("hibernate.dialect",
env.getProperty("spring.jpa.database-platform"));
properties.put("hibernate.current_session_context_class",
env.getProperty("spring.jpa.properties.hibernate.current_session_context_class"));
em.setJpaPropertyMap(properties);
return em;
}
#Primary
#Bean
#ConfigurationProperties(prefix = "spring.datasource")
public DataSource userDataSource() {
return DataSourceBuilder
.create()
.build();
}
#Primary
#Bean
public JpaTransactionManager transactionManager() {
JpaTransactionManager transactionManager
= new JpaTransactionManager();
transactionManager.setEntityManagerFactory(
entityManager().getObject());
return transactionManager;
}
#Bean(name = "sessionFactory")
public SessionFactory getSessionFactory() {
SessionFactory sessionFactory = transactionManager().getEntityManagerFactory().unwrap(SessionFactory.class);
if (sessionFactory == null) {
throw new NullPointerException("factory is not a hibernate factory");
} else {
System.out.println(
"==================================== Transaction Enabled ========================================");
return sessionFactory;
}
}
I have also configured spring.rdatasource and it is same as above file, except it is not set as primary and other further details like pojo, transactionmanager etc.