javax.persistence.PersistenceException: org.hibernate.exception.JDBCConnectionException: could not extract ResultSet

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    Root Cause Analysis

    1. javax.persistence.PersistenceException

      org.hibernate.exception.JDBCConnectionException: could not extract ResultSet

      at org.hibernate.ejb.AbstractEntityManagerImpl.convert()
    2. Hibernate EJB
      QueryImpl.getSingleResult
      1. org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1387)
      2. org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1310)
      3. org.hibernate.ejb.QueryImpl.getSingleResult(QueryImpl.java:316)
      3 frames
    3. Querydsl - JPA support
      AbstractJPAQuery.uniqueResult
      1. com.mysema.query.jpa.impl.AbstractJPAQuery.getSingleResult(AbstractJPAQuery.java:219)
      2. com.mysema.query.jpa.impl.AbstractJPAQuery.uniqueResult(AbstractJPAQuery.java:295)
      3. com.mysema.query.jpa.impl.AbstractJPAQuery.uniqueResult(AbstractJPAQuery.java:281)
      3 frames
    4. Querydsl - Core module
      ProjectableQuery.singleResult
      1. com.mysema.query.support.ProjectableQuery.singleResult(ProjectableQuery.java:75)
      1 frame