com.liferay.portal.kernel.messaging.MessageListenerException: com.liferay.portal.kernel.exception.SystemException: com.liferay.portal.kernel.dao.orm.ORMException: org.hibernate.exception.GenericJDBCException: could not execute query

com.liferay.portal.kernel.messaging.MessageListenerException: com.liferay.portal.kernel.exception.SystemException: com.liferay.portal.kernel.dao.orm.ORMException: org.hibernate.exception.GenericJDBCException: could not execute query	at com.liferay.portal.kernel.messaging.BaseMessageListener.receive(BaseMessageListener.java:32)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at com.liferay.portal.kernel.bean.ClassLoaderBeanHandler.invoke(ClassLoaderBeanHandler.java:67)	at $Proxy285.receive(Unknown Source)	at com.liferay.portal.kernel.scheduler.messaging.SchedulerEventMessageListenerWrapper.receive(SchedulerEventMessageListenerWrapper.java:76)	at com.liferay.portal.kernel.messaging.InvokerMessageListener.receive(InvokerMessageListener.java:72)	at com.liferay.portal.kernel.messaging.ParallelDestination$1.run(ParallelDestination.java:69)	at com.liferay.portal.kernel.concurrent.ThreadPoolExecutor$WorkerTask._runTask(ThreadPoolExecutor.java:678)	at com.liferay.portal.kernel.concurrent.ThreadPoolExecutor$WorkerTask.run(ThreadPoolExecutor.java:589)	at java.lang.Thread.run(Thread.java:662)Caused by: com.liferay.portal.kernel.exception.SystemException: com.liferay.portal.kernel.dao.orm.ORMException: org.hibernate.exception.GenericJDBCException: could not execute query	at com.liferay.portal.service.persistence.impl.BasePersistenceImpl.processException(BasePersistenceImpl.java:209)	at com.liferay.portal.service.persistence.CompanyPersistenceImpl.findBySystem(CompanyPersistenceImpl.java:1132)	at com.liferay.portal.service.persistence.CompanyPersistenceImpl.findBySystem(CompanyPersistenceImpl.java:1033)	at com.liferay.portal.service.impl.CompanyLocalServiceImpl.getCompanies(CompanyLocalServiceImpl.java:520)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:117)	at com.liferay.portal.spring.transaction.DefaultTransactionExecutor.execute(DefaultTransactionExecutor.java:62)	at com.liferay.portal.spring.transaction.TransactionInterceptor.invoke(TransactionInterceptor.java:52)	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:113)	at com.liferay.portal.spring.aop.ServiceBeanAopProxy.invoke(ServiceBeanAopProxy.java:218)	at $Proxy16.getCompanies(Unknown Source)	at com.liferay.portal.service.CompanyLocalServiceUtil.getCompanies(CompanyLocalServiceUtil.java:411)	at com.liferay.portlet.admin.messaging.LDAPImportMessageListener.doImportOnStartup(LDAPImportMessageListener.java:32)	at com.liferay.portlet.admin.messaging.LDAPImportMessageListener.doReceive(LDAPImportMessageListener.java:48)	at com.liferay.portal.kernel.messaging.BaseMessageListener.receive(BaseMessageListener.java:26)	... 12 moreCaused by: com.liferay.portal.kernel.dao.orm.ORMException: org.hibernate.exception.GenericJDBCException: could not execute query	at com.liferay.portal.dao.orm.hibernate.ExceptionTranslator.translate(ExceptionTranslator.java:30)	at com.liferay.portal.dao.orm.hibernate.QueryImpl.list(QueryImpl.java:113)	at com.liferay.portal.dao.orm.hibernate.QueryImpl.list(QueryImpl.java:92)	at com.liferay.portal.kernel.dao.orm.QueryUtil.list(QueryUtil.java:170)	at com.liferay.portal.kernel.dao.orm.QueryUtil.list(QueryUtil.java:162)	at com.liferay.portal.service.persistence.CompanyPersistenceImpl.findBySystem(CompanyPersistenceImpl.java:1129)	... 28 moreCaused by: org.hibernate.exception.GenericJDBCException: could not execute query	at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:140)	at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:128)	at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)	at org.hibernate.loader.Loader.doList(Loader.java:2545)	at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2276)	at org.hibernate.loader.Loader.list(Loader.java:2271)	at org.hibernate.hql.classic.QueryTranslatorImpl.list(QueryTranslatorImpl.java:940)	at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:196)	at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1268)	at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102)	at com.liferay.portal.dao.orm.hibernate.QueryImpl.list(QueryImpl.java:101)	... 32 moreCaused by: java.sql.SQLException: Connections could not be acquired from the underlying database!	at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:106)	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:529)	at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:128)	at com.liferay.portal.dao.jdbc.util.DataSourceWrapper.getConnection(DataSourceWrapper.java:39)	at org.springframework.jdbc.datasource.LazyConnectionDataSourceProxy$LazyConnectionInvocationHandler.getTargetConnection(LazyConnectionDataSourceProxy.java:403)	at org.springframework.jdbc.datasource.LazyConnectionDataSourceProxy$LazyConnectionInvocationHandler.invoke(LazyConnectionDataSourceProxy.java:376)	at $Proxy4.prepareStatement(Unknown Source)	at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:534)	at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:452)	at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:161)	at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1700)	at org.hibernate.loader.Loader.doQuery(Loader.java:801)	at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:274)	at org.hibernate.loader.Loader.doList(Loader.java:2542)	... 39 moreCaused by: com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source.	at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1319)	at com.mchange.v2.resourcepool.BasicResourcePool.prelimCheckoutResource(BasicResourcePool.java:557)	at com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:477)	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:525)	... 51 more