i have this hibernate dao and it works fine while testing in my local machine. but for some transaction it throws IllegalStateException. i believe it is because multiple users hitting at same time.(i may be wrong).
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean class="org.springframework.beans.factory.config.
PropertyPlaceholderConfigurer">
<property name="location">
<value>/WEB-INF/db.properties</value>
</property>
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.Oracle10gDialect</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.format_sql">true</prop>
<prop key="hibernate.connection.url">
jdbc:oracle:thin:@x.x.x.x:1521:xxx</prop>
<prop key="hibernate.connection.driver_class">
oracle.jdbc.driver.OracleDriver</prop>
<prop key="hibernate.c3p0.timeout">18000</prop>
</props>
</property>
<property name="packagesToScan">
<list>
<value>com.psc</value>
</list>
</property>
</bean>
<bean id="transactionManager" class="org.springframework.
orm.hibernate5.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<bean id="dataSource" class="org.springframework.jdbc.
datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driver}"></property>
<property name="url" value="${jdbc.url}"></property>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
</beans>
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