[0, 101] The query does not start with a valid identifier, has to be either SELECT, UPDATE or DELETE FROM.

select distinct t from com.mydomain.myentity t where t.recstatus=0 and t.fileline=0

<context:annotation-config />
	
<tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true" mode="proxy"/>

<bean id="dataConfigPropertyConfigurer" class="org.springframework.context.support.PropertySourcesPlaceholderConfigurer">
     	<property name="location" value="WEB-INF/config/${build_environment}.properties" />   
   </bean>

    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"
		p:driverClassName="com.mysql.jdbc.Driver" p:url="${hibernate.db_uri}" p:username="${hibernate.db_user}" p:password="${hibernate.db_password}"
/>
		
    <bean id="persistenceUnitManager" class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager">
    	<property name="defaultDataSource" ref="dataSource"></property>
    </bean>

	<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"
		p:persistenceUnitManager-ref="persistenceUnitManager"
		p:persistenceUnitName="MyPersistenceUnit" p:jpaVendorAdapter-ref="jpaAdapter"  >
	</bean>

	<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"
		p:entityManagerFactory-ref="entityManagerFactory" />

    <bean id="jpaAdapter" class="org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter" p:showSql="true"/>

	<persistence-unit name="MyPersistenceUnit" transaction-type="RESOURCE_LOCAL">
		<class>com.mydomain.myentity</class>
				<exclude-unlisted-classes>true</exclude-unlisted-classes>
		<validation-mode>NONE</validation-mode>
		<properties>
			<property name="eclipselink.weaving" value="static"/>
		</properties>
	</persistence-unit>
</persistence>

java.lang.IllegalArgumentException: An exception occurred while creating a query in EntityManager: 
Exception Description: Syntax error parsing [select distinct t from com.mydomain.models.myEntity t  where t.recstatus=0 and t.fileline=0]. 
[0, 101] The query does not start with a valid identifier, has to be either SELECT, UPDATE or DELETE FROM.
	at org.eclipse.persistence.internal.jpa.EntityManagerImpl.createQuery(EntityManagerImpl.java:1512)
	at org.eclipse.persistence.internal.jpa.EntityManagerImpl.createQuery(EntityManagerImpl.java:1532)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:616)
	at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:240)
	at $Proxy26.createQuery(Unknown Source)
	at com.mydomain.TransactionsDAO.getTransactions(TransactionsDAO.java:169)
	at com.mydomain.TransactionsDAO$$FastClassByCGLIB$$32cab5b7.invoke(<generated>)
	at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
	at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:689)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
	at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622)
	at com.mydomain.TransactionsDAO$$EnhancerByCGLIB$$32bc7e1c.getTransactions(<generated>)
	at com.mydomain.TransactionStatusChecker.checkTransactionsStatus(TransactionStatusChecker.java:30)
	at com.mydomain.TransactionStatusChecker$$FastClassByCGLIB$$5dbbb251.invoke(<generated>)
	at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
	at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:689)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
	at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622)
	at com.mydomain.TransactionStatusChecker$$EnhancerByCGLIB$$bf48da1a.checkTransactionsStatus(<generated>)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:616)
	at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:64)
	at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:53)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:351)
	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:178)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:165)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:267)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
	at java.lang.Thread.run(Thread.java:679)
Caused by: Exception [EclipseLink-0] (Eclipse Persistence Services - 2.4.0.v20120608-r11652): org.eclipse.persistence.exceptions.JPQLException
Exception Description: Syntax error parsing [select distinct t from com.mydomain.models.myEntity t  where t.recstatus=0 and t.fileline=0]. 
[0, 101] The query does not start with a valid identifier, has to be either SELECT, UPDATE or DELETE FROM.
	at org.eclipse.persistence.internal.jpa.jpql.HermesParser.buildException(HermesParser.java:150)
	at org.eclipse.persistence.internal.jpa.jpql.HermesParser.validate(HermesParser.java:325)
	at org.eclipse.persistence.internal.jpa.jpql.HermesParser.populateQueryImp(HermesParser.java:270)
	at org.eclipse.persistence.internal.jpa.jpql.HermesParser.buildQuery(HermesParser.java:157)
	at org.eclipse.persistence.internal.jpa.EJBQueryImpl.buildEJBQLDatabaseQuery(EJBQueryImpl.java:138)
	at org.eclipse.persistence.internal.jpa.EJBQueryImpl.buildEJBQLDatabaseQuery(EJBQueryImpl.java:112)
	at org.eclipse.persistence.internal.jpa.EJBQueryImpl.<init>(EJBQueryImpl.java:98)
	at org.eclipse.persistence.internal.jpa.EJBQueryImpl.<init>(EJBQueryImpl.java:82)
	at org.eclipse.persistence.internal.jpa.EntityManagerImpl.createQuery(EntityManagerImpl.java:1510)
	... 39 more

@PersistenceContext(type=PersistenceContextType.TRANSACTION,unitName="myPersistenceUnit")
protected EntityManager em;

TypedQuery<MyEntity> _query = em.createQuery(_sql, MyEntity.class);
if ( filterArgs != null && filterArgs.length > 0 ) {
for ( int i=0; i<filterArgs.length; i++) {
	_query.setParameter(i+1, filterArgs[i]);
}
}
		
Collection<MyEntity> _retval = _query.getResultList();

Caused by: java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:810)
	at java.util.HashMap$KeyIterator.next(HashMap.java:845)
	at java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1026)
	at org.eclipse.persistence.jpa.jpql.parser.JPQLQueryBNF.buildIdentifiers(JPQLQueryBNF.java:175)
	at org.eclipse.persistence.jpa.jpql.parser.JPQLQueryBNF.populateIdentifiers(JPQLQueryBNF.java:449)
	at org.eclipse.persistence.jpa.jpql.parser.JPQLQueryBNF.getExpressionFactory(JPQLQueryBNF.java:260)
	at org.eclipse.persistence.jpa.jpql.parser.AbstractExpression.parseSingleExpression(AbstractExpression.java:1003)
	at org.eclipse.persistence.jpa.jpql.parser.JPQLExpression.parse(JPQLExpression.java:307)
	at org.eclipse.persistence.jpa.jpql.parser.JPQLExpression.<init>(JPQLExpression.java:129)
	at org.eclipse.persistence.jpa.jpql.parser.JPQLExpression.<init>(JPQLExpression.java:91)
	at org.eclipse.persistence.internal.jpa.jpql.HermesParser.populateQueryImp(HermesParser.java:258)

import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;

public class EclipseLinkEntityManagerFactory extends LocalContainerEntityManagerFactoryBean {

	public void initializePersistenceUnit() {
		super.getObject().createEntityManager().createQuery("select t from " + MyEntity.class.getName() + " t where t.id=0");
	}
	
}

<bean id="entityManagerFactory" class="com.mydomain.eclipselink.EclipseLinkEntityManagerFactory"
		p:persistenceUnitManager-ref="persistenceUnitManager"
		p:persistenceUnitName="MyPU" p:jpaVendorAdapter-ref="jpaAdapter" 
		init-method="initializePersistenceUnit" >
</bean>

import org.eclipse.persistence.exceptions.JPQLException;
import org.eclipse.persistence.internal.jpa.JPAQuery;
import org.eclipse.persistence.sessions.SessionEvent;
import org.eclipse.persistence.sessions.SessionEventAdapter;

public class RaceConditionWorkaround extends SessionEventAdapter {

	@Override
	public void postLogin(SessionEvent event) {
		/*
		 * This is a nasty hack to work around a race condition in EclipseLink. If you try to
		 * execute two queries at the same time while a persistence unit is starting up, you
		 * can get bogus exceptions about syntax errors. Executing this fake query causes the
		 * query parser to be initialized before any other queries can execute.
		 * 
		 * For more details, see:
		 * http://www.eclipse.org/forums/index.php/t/368031/
		 */
		try {
			event.getSession().executeQuery(new JPAQuery("SELECT x FROM Fake x"));
		} catch (JPQLException e) {} // deliberately suppress the exception, we expect it to happen
	}

}