Enviroment:
database product name=PostgreSQL
database version=10.6 (Ubuntu 10.6-0ubuntu0.18.04.1)
jdbc driver name=PostgreSQL Native Driver
jdbc driver version=PostgreSQL 9.4.1212.jre7
dbunit 2.5.x
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Using a multi schema FlatXmlDataset (where tables are described by CHEMA.TABLENAME), and setting FEATURE_QUALIFIED_TABLE_NAMES to true, dbunit can not load the dataset thrwoing a NoSuchTableException.
Ex:
<core.user id="user-content-10" username="john">
<core.user id="user-content-11" username="josh"></core.user></core.user>
However, when the first xml entry of the respective SCHEMA.TABLE has the Schema in lowercase, every other will load normally
Ex:
<core.user id="user-content-10" username="john">
<core.user id="user-content-11" username="josh"></core.user></core.user>
Which 2.5.x version? Please try with 2.6.0 in case a later version fixed (e.g. 2.5.3 table name case sensitive problems).
What is your setting of http://dbunit.sourceforge.net/properties.html#Case_Sensitive_Table_Names ?
Do you have time to create a reproducing test to help resolve quicker, and maybe the fix?