We Keep Coding

Java Hibernate Apache Derby - Table/View does not exist

The table "customer" is under the default schema "APP". When I run, I get an error:
java.sql.SQLSyntaxErrorException: Table/View 'CUSTOMER' does not exist.
The same jdbcUrl works through DriverManager.getConnection through.
I tried to include the schema name as part of jdbcUrl:
<property name="jdbcUrl" value="jdbc:derby:web_customer_tracker; user=app" />, but still no luck.
<!-- Step 1: Define Database DataSource / connection pool -->
<bean id="myDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="driverClass" value="org.apache.derby.jdbc.EmbeddedDriver" />
<property name="jdbcUrl" value="jdbc:derby:web_customer_tracker" />
<!-- these are connection pool properties for C3P0 -->
<property name="minPoolSize" value="5" />
<property name="maxPoolSize" value="20" />
<property name="maxIdleTime" value="30000" />
</bean>
<!-- Step 2: Setup Hibernate session factory -->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
<property name="dataSource" ref="myDataSource" />
<property name="packagesToScan" value="com.luv2code.springdemo.entity" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.DerbyDialect</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
<!-- Step 3: Setup Hibernate transaction manager -->
<bean id="myTransactionManager"
class="org.springframework.orm.hibernate5.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>

connecting to databases using spring and hibernate - primary and secondary databases

Hi this is what I am looking to do -
I have three databases - each exactly the same - one is primary and two and three are back ups.
I am using hibernate and spring to connect to the data base.I have spring application context file configured with 3 session factories, and 3 corresponding data sources.
I was wondering if there is a way using spring where if the application is not able to connect to the database 1 (an exception is thrown) it will connect to database 2 - and in turn is database 3 is down it will connect to 3 and proceed.
What would be the best way to implement this? I have read about AbstractRoutingDataSource ..but not sure how to make use of that in this case..also if there are other ideas.. Would appreciate some directions. Thanks!
this is my config in application context xml -
<bean id="dataSource1" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="driverClass" value="$g{jdbc.driverClassName}" />
<property name="jdbcUrl" value="$g{url1}" />
<property name="user" value="$l{uid1}" />
<property name="password" value="$l{pwd1}" />
<property name="minPoolSize" value="$g{jdbc.minPoolSize}" />
<property name="maxPoolSize" value="$g{jdbc.maxPoolSize}" />
<property name="preferredTestQuery" value="$g{jdbc.preferredTestQuery}" />
<property name="testConnectionOnCheckout" value="$g{jdbc.testConnectionOnCheckout}" />
</bean>
<bean id="sessionFactory1"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource1" />
<property name="packagesToScan">
<list>
<value>com.model</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.hbm2ddl.auto">validate</prop>
<prop key="hibernate.dialect">$g{jdbc.dialect}</prop>
<prop key="hibernate.show_sql">$g{jdbc.show_sql}</prop>
</props>
</property>
</bean>
<bean id="dataSource2" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="driverClass" value="$g{jdbc.driverClassName}" />
<property name="jdbcUrl" value="$g{url2}" />
<property name="user" value="$l{uid2}" />
<property name="password" value="$l{pwd2}" />
<property name="minPoolSize" value="$g{jdbc.minPoolSize}" />
<property name="maxPoolSize" value="$g{jdbc.maxPoolSize}" />
<property name="preferredTestQuery" value="$g{jdbc.preferredTestQuery}" />
<property name="testConnectionOnCheckout" value="$g{jdbc.testConnectionOnCheckout}" />
</bean>
<bean id="sessionFactory2"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource2" />
<property name="packagesToScan">
<list>
<value>com.model</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.hbm2ddl.auto">validate</prop>
<prop key="hibernate.dialect">$g{jdbc.dialect}</prop>
<prop key="hibernate.show_sql">$g{jdbc.show_sql}</prop>
</props>
</property>
</bean>
<bean id="dataSource3" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="driverClass" value="$g{jdbc.driverClassName}" />
<property name="jdbcUrl" value="$g{url3}" />
<property name="user" value="$l{uid3}" />
<property name="password" value="$l{pwd3}" />
<property name="minPoolSize" value="$g{jdbc.minPoolSize}" />
<property name="maxPoolSize" value="$g{jdbc.maxPoolSize}" />
<property name="preferredTestQuery" value="$g{jdbc.preferredTestQuery}" />
<property name="testConnectionOnCheckout" value="$g{jdbc.testConnectionOnCheckout}" />
</bean>
<bean id="sessionFactory3"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource3" />
<property name="packagesToScan">
<list>
<value>com.model</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.hbm2ddl.auto">validate</prop>
<prop key="hibernate.dialect">$g{jdbc.dialect}</prop>
<prop key="hibernate.show_sql">$g{jdbc.show_sql}</prop>
</props>
</property>
</bean>
<bean id="transactionManager1"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory1" />
</bean>
<bean id="transactionManager2"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory2" />
</bean>
<bean id="transactionManager3"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory3" />
</bean>

There is a way to achieve this by using Spring Abstract Data Source Routing mechanism -
https://spring.io/blog/2007/01/23/dynamic-datasource-routing/

Multiple SessionFactory/TransactionManager : no session found for current thread

I'm having two databases running in parallel.
I created two configs with different GenericDAOs/SessionFactories for each one, however the second SessionFactory to be instantiated have issues. When I try to getCurrentSession() I get this error : org.hibernate.HibernateException: No Session found for current thread.
Config1.xml :
<bean id="mainDataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost/main" />
<property name="username" value="root" />
<property name="password" value="" />
</bean>
<bean id="mainSessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="mainDataSource" />
<property name="annotatedClasses">
<list>
<value>com.avocat.domain.entities.main.User</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
</bean>
<bean id="mainTransactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="dataSource" ref="mainDataSource" />
<property name="sessionFactory" ref="mainSessionFactory" />
</bean>
<tx:annotation-driven transaction-manager="mainTransactionManager" />
<context:annotation-config />
Config2.xml :
<bean id="fakeDataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost/fake" />
<property name="username" value="root" />
<property name="password" value="" />
</bean>
<bean id="fakeSessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="fakeDataSource" />
<property name="annotatedClasses">
<list>
<value>com.avocat.domain.entities.intra.Bla</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
</bean>
<bean id="fakeTransactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="dataSource" ref="fakeDataSource" />
<property name="sessionFactory" ref="fakeSessionFactory" />
</bean>
<tx:annotation-driven transaction-manager="fakeTransactionManager" />
<context:annotation-config />
MainGenericDAO :
#Autowired
#Qualifier("mainSessionFactory")
private SessionFactory mainSessionFactory;
protected Session currentSession()
{
return mainSessionFactory.getCurrentSession();
}
FakeGenericDAO :
#Autowired
#Qualifier("fakeSessionFactory")
private SessionFactory fakeSessionFactory;
protected Session currentSession()
{
return fakeSessionFactory.getCurrentSession();
}
Config1 is declared before Config2.
Also, queries using MainGenericDAO/MainSessionFactory are OK.
But currentSession() from FakeGenericDAO returns the error.

It seems that the transaction is not created on your second DAO for the FakeSessionFactory. You must use #Transactional("fakeTransactionManager") on the FakeGenericDAO.

configure jta transaction manager using spring?

I have below configuration in my spring config file. I am using Spring3, Hibernate4 and Tomcat7.
<jee:jndi-lookup id="wcDataSource" jndi-name="java:comp/UserTransaction" resource-ref="false" environment-ref="remoteEnv" />
<util:properties id="remoteEnv">
<prop key="java.naming.provider.url">jnp://jndi.myURL.me:1099</prop>
<prop key="java.naming.factory.url.pkgs">org.jboss.naming:org.jnp.interfaces</prop>
<prop key="java.naming.factory.initial">org.jnp.interfaces.NamingContextFactory</prop>
<prop key="jnp.disableDiscovery">true</prop>
</util:properties>
<bean id="dataSourceKS" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${driverClassName}" />
<property name="jdbcUrl" value="${url}" />
<property name="user" value="${username}" />
<property name="password" value="${password}" />
<!-- pool sizing -->
<property name="initialPoolSize" value="15" />
<property name="minPoolSize" value="10" />
<property name="maxPoolSize" value="20" />
<property name="acquireIncrement" value="3" />
<property name="maxStatements" value="6000" />
<property name="maxStatementsPerConnection" value="300" />
</bean>
<bean name="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSourceKS"/>
<property name="annotatedClasses">
<list>
<value>com.sample.MyBean</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.cache.provider_class">org.hibernate.cache.NoCacheProvider</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.OracleDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.format_sql">true</prop>
<prop key="hibernate.use_sql_comments">true</prop>
<prop key="hibernate.jdbc.batch_size">50</prop>
</props>
</property>
</bean>
Now how can i configure JTATransactionManager here to use #Transactional? Here i have wcDataSource and dataSourceKS. Thanks!
Thanks!

The JtaTransactionManager does not need to know about the DataSource, or any other specific resources, because it uses the container’s global transaction management infrastructure.
So conf file should look like this
<bean id="transactionManager" class="org.springframework.transaction.jta.JtaTransactionManager"/>

See http://lafernando.com/2011/01/05/xa-transactions-with-apache-dbcp/ which does it in code but which you should be able to translate to a spring configuration.
Which would result in something like this.
<jee:jndi-lookup id="userTransaction" jndi-name="java:comp/UserTransaction" resource-ref="false" environment-ref="remoteEnv" />
<jee:jndi-lookup id="jtaTransactionManager" jndi-name="java:comp/TransactionManager" resource-ref="false" environment-ref="remoteEnv" />
<bean id="transactionManager" class="org.springframework.transaction.jta.JtaTransactionManager">
<constructor-arg ref="userTransaction"/>
<constructor-arg ref="jtaTransactionManager"/>
</bean>
<util:properties id="remoteEnv">
<prop key="java.naming.provider.url">jnp://jndi.myURL.me:1099</prop>
<prop key="java.naming.factory.url.pkgs">org.jboss.naming:org.jnp.interfaces</prop>
<prop key="java.naming.factory.initial">org.jnp.interfaces.NamingContextFactory</prop>
<prop key="jnp.disableDiscovery">true</prop>
</util:properties>
<bean id="oracleXaDataSource" class="oracle.jdbc.xa.client.OracleXADataSource">
<property name="user" value="${username}" />
<property name="password" value="${password}" />
<property name="url" value="${url}" />
</bean>
<bean id="dataSourceKS" class="org.apache.commons.dbcp.managed.BasicManagedDatasource">
<property name="transactionManager" ref="jtaTransactionManager" />
<property name="xaDataSourceInstance" ref="oracleXaDataSource" />
<property name="initialPoolSize" value="15" />
<property name="minPoolSize" value="10" />
<property name="maxPoolSize" value="20" />
<property name="acquireIncrement" value="3" />
<property name="maxStatements" value="6000" />
<property name="maxStatementsPerConnection" value="300" />
</bean>
<bean name="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="jtaDataSource" ref="dataSourceKS"/>
// .. other hibernate properties
</bean>
Note the change to commons-dbcp as c3p0 doesn't have XA capable implementations.

Where to place c3p0 properties in configuration file?

I am using spring/hibernate integrated application. i have configured c3p0 connection pooling. the problem is if i set c3p0 properties in hibernate properties section then those properties are not considered and default configuration is taken. if i set the same properties for combopooled datasource then they are considered. where is the best place to place c3p0 properties.
Below configuration works:
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${db.driverClassName}" />
<property name="jdbcUrl" value="${db.url}" />
<property name="user" value="${db.username}" />
<property name="password" value="${db.password}" />
<!-- c3p0 properties -->
<property name="minPoolSize" value="5" />
<property name="maxPoolSize" value="20" />
<property name="maxStatements" value="0" />
<property name="preferredTestQuery" value="select * from sometable" />
</bean>
<bean name="wygSessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="mappingLocations" value="classpath:hibernate/module/*.hbm.xml" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.cache.provider_class">org.hibernate.cache.NoCacheProvider</prop>
<prop key="hibernate.connection.pool.size">20</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.OracleDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.format_sql">true</prop>
</props>
</property>
</bean>
This does not work:
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${db.driverClassName}" />
<property name="jdbcUrl" value="${db.url}" />
<property name="user" value="${db.username}" />
<property name="password" value="${db.password}" />
</bean>
<bean name="wygSessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="mappingLocations" value="classpath:hibernate/module/*.hbm.xml" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.cache.provider_class">org.hibernate.cache.NoCacheProvider</prop>
<prop key="hibernate.connection.pool.size">20</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.OracleDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.format_sql">true</prop>
<!-- c3p0 properties -->
<prop key="hibernate.c3p0.min_size">5</prop>
<prop key="hibernate.c3p0.max_size">20</prop>
<prop key="hibernate.c3p0.timeout">300</prop>
<prop key="hibernate.c3p0.max_statements">0</prop>
<prop key="hibernate.c3p0.preferredTestQuery">select * from sometable</prop>
</props>
</property>
</bean>

I was getting the same problem and it took time to figure out the solution.
I use Hibernate 4.0.1 and mysql 5.1(no spring framework) and I was facing the issue. First make sure that you configured the c3p0 jars properly which are essential.
I used these properties in hibernate.cfg.xml
<property name="hibernate.c3p0.validate">true</property>
<property name="hibernate.connection.provider_class">org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider</property>
<property name="hibernate.c3p0.min_size">5</property>
<property name="hibernate.c3p0.max_size">20</property>
<property name="hibernate.c3p0.max_statements">50</property>
<property name="hibernate.c3p0.preferredTestQuery">SELECT 1;</property>
<property name="hibernate.c3p0.testConnectionOnCheckout">true</property>
<property name="hibernate.c3p0.idle_test_period">10</property>
<property name="hibernate.c3p0.acquireRetryAttempts">5</property>
<property name="hibernate.c3p0.acquireRetryDelay">200</property>
<property name="hibernate.c3p0.timeout">40</property>
But it's of no use 'cause C3p0 was still taking the default properties not the properties which I set in hibernate.cfg.xml, You can check it in logs. So, I searched many websites for right solution and finally I came up with this. remove the C3p0 properties in cfg.xml and create c3p0-config.xml in the root path(along with cfg.xml) and set properties as follows.
<c3p0-config>
<default-config>
<property name="automaticTestTable">con_test</property>
<property name="checkoutTimeout">40</property>
<property name="idleConnectionTestPeriod">10</property>
<property name="initialPoolSize">10</property>
<property name="maxPoolSize">20</property>
<property name="minPoolSize">5</property>
<property name="maxStatements">50</property>
<property name="preferredTestQuery">SELECT 1;</property>
<property name="acquireRetryAttempts">5</property>
<property name="acquireRetryDelay">200</property>
<property name="maxIdleTime">30</property>
</default-config>
</c3p0-config>
but if you run, ORM takes the jdbc connection but not C3p0 connection pool 'cause we should add these properties in hibernate.cfg.xml
<property name="hibernate.c3p0.validate">true</property>
<property name="hibernate.connection.provider_class">org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider</property>
now everything works fine(At least it worked fine for me) and the issue is solved.
check the following for references.
http://www.mchange.com/projects/c3p0/index.html#configuring_connection_testing
https://community.jboss.org/wiki/HowToConfigureTheC3P0ConnectionPool
I hope this solves your problem.