org.hibernate.exception.GenericJDBCException: не удалось подготовить оператор

Question

createQuery в приведенном ниже коде иногда вызывает исключение could not prepare statement. Это не происходит согласованно, оно генерирует это исключение только в 10% случаев, когда этот код выполняется, остальные 90% успешно выполняют запрос. Есть идеи, почему это происходит?

Session session = DB.getInstance().getSession(Id);
DesiredObject = (DesiredObject) session.createQuery(
                "from DesiredTable where Id = :id")
                .setParameter("id", Id).uniqueResult();

Полная трассировка стека:

Caused by: org.hibernate.exception.GenericJDBCException: could not prepare statement
    at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:47)
    at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113)
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:186)
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareQueryStatement(StatementPreparerImpl.java:151)
    at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:2104)
    at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:2034)
    at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:2012)
    at org.hibernate.loader.Loader.doQuery(Loader.java:953)
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:354)
    at org.hibernate.loader.Loader.doList(Loader.java:2815)
    at org.hibernate.loader.Loader.doList(Loader.java:2797)
    at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2629)
    at org.hibernate.loader.Loader.list(Loader.java:2624)
    at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:506)
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:396)
    at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:219)
    at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1396)
    at org.hibernate.query.internal.AbstractProducedQuery.doList(AbstractProducedQuery.java:1558)
    at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1526)
    ... 14 more
Caused by: java.sql.SQLException: Connection is closed
    at com.zaxxer.hikari.pool.ProxyConnection$ClosedConnection.lambda$getClosedConnection$0(ProxyConnection.java:489)
    at com.sun.proxy.$Proxy15.prepareStatement(Unknown Source)
    at com.zaxxer.hikari.pool.ProxyConnection.prepareStatement(ProxyConnection.java:311)
    at com.zaxxer.hikari.pool.HikariProxyConnection.prepareStatement(HikariProxyConnection.java)
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$5.doPrepare(StatementPreparerImpl.java:149)
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:176)