This issue was already identified during test failures analysis in EAP6 for DB2 and I believe I see similar problem with these tests in EAP5

Stacktrace:
org.hibernate.exception.GenericJDBCException: could not load an entity: [org.hibernate.test.formulajoin.Detail#component[master,currentVersion]

]
at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:126)...........................................................Caused by: com.ibm.db2.jcc.am.SqlException: [jcc][10429][12554][4.12.55] A processing error occurred on the server which resulted in an unrecoverable error.
Please set deferPrepares property to false and re-establish the connection.

Failing tests:

org.hibernate.test.formulajoin.FormulaJoinTest.testFormulaJoin
org.hibernate.test.bidi.AuctionTest.testLazy
org.hibernate.search.test.query.criteria.MixedCriteriaTest.testCriteriaWithFilteredEntity
org.hibernate.search.test.query.criteria.MixedCriteriaTest.testCriteriaWithoutFilteredEntity

https://hudson.qa.jboss.com/hudson/view/EAP5/view/Hibernate-EAP5/job/eap5-hibernate-dballocator-jdk7-core/database=db2-97,jdbc=jdbc4,jdk=java17_default,label=RHEL6_x86_64/lastCompletedBuild/testReport/

https://hudson.qa.jboss.com/hudson/view/EAP5/view/Hibernate-EAP5/job/eap5-hibernate-dballocator-jdk7-search/database=db2-97,jdbc=jdbc4,jdk=java17_default,label=RHEL6_x86_64/lastCompletedBuild/testReport/