HHH-12845 Test DiscriminatorJoinedInheritanceTest fails on Oracle databases

Test DiscriminatorJoinedInheritanceTest from hibernate-envers-testsuite fails on all the Oracle databases (11gR2, 11gR2RAC, 12cR1, 12cRAC).

Test run of the testsuite for 7.1.4.CP.CR1: https://eap-cp-qe-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/view/EAP7/view/EAP7-Hibernate/job/eap-71x-hibernate-envers-testsuite/

Issues are probably caused by "SQLSyntaxErrorException: ORA-00972: identifier is too long" as seen in log https://eap-cp-qe-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/view/EAP7/view/EAP7-Hibernate/job/eap-71x-hibernate-envers-testsuite/database=oracle11gR2,jdk=oracle-java-1.8,label=(RHEL6)&&!ia64/lastCompletedBuild/testReport/org.hibernate.envers.test.integration.inheritance.joined/DiscriminatorJoinedInheritanceTest/initData_0_/.

It would be really great to fix this test because it is the only test failing in this testsuite.