ALTER TABLE BATCH_JOB_INSTANCE DROP CONSTRAINT ${IFEXISTSBEFORE} JOB_INST_UN;
ALTER TABLE BATCH_JOB_EXECUTION DROP CONSTRAINT ${IFEXISTSBEFORE} JOB_INST_EXEC_FK;
ALTER TABLE BATCH_JOB_EXECUTION_PARAMS DROP CONSTRAINT ${IFEXISTSBEFORE} JOB_EXEC_PARAMS_FK;
ALTER TABLE BATCH_STEP_EXECUTION DROP CONSTRAINT ${IFEXISTSBEFORE} JOB_EXEC_STEP_FK;
ALTER TABLE BATCH_STEP_EXECUTION_CONTEXT DROP CONSTRAINT ${IFEXISTSBEFORE} STEP_EXEC_CTX_FK;
ALTER TABLE BATCH_JOB_EXECUTION_CONTEXT DROP CONSTRAINT ${IFEXISTSBEFORE} JOB_EXEC_CTX_FK;

