diff --git a/src/test/java/org/dbunit/ext/postgresql/PostgresqlNonPublicSchemaDeleteAllIT.java b/src/test/java/org/dbunit/ext/postgresql/PostgresqlNonPublicSchemaDeleteAllIT.java
new file mode 100644
index 000000000..30bbdcd73
--- /dev/null
+++ b/src/test/java/org/dbunit/ext/postgresql/PostgresqlNonPublicSchemaDeleteAllIT.java
@@ -0,0 +1,92 @@
+package org.dbunit.ext.postgresql;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.sql.ResultSet;
+import java.sql.Statement;
+
+import org.dbunit.DatabaseEnvironment;
+import org.dbunit.database.DatabaseConfig;
+import org.dbunit.database.DatabaseConnection;
+import org.dbunit.database.IDatabaseConnection;
+import org.dbunit.dataset.DefaultDataSet;
+import org.dbunit.dataset.DefaultTable;
+import org.dbunit.dataset.IDataSet;
+import org.dbunit.operation.DatabaseOperation;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.condition.EnabledIfSystemProperty;
+
+/**
+ * Reproduces the second scenario of issue 397: an {@link IDatabaseConnection} configured with a
+ * non-default schema and given an <i>unqualified</i> table name, without
+ * {@link DatabaseConfig#FEATURE_QUALIFIED_TABLE_NAMES} enabled. The original report saw
+ * {@code DatabaseOperation.DELETE_ALL} generate {@code delete from app_role_all_children},
+ * missing the {@code bi} schema, failing with "relation ... does not exist" since the
+ * connection's own default schema was never applied to the generated SQL.
+ * <p>
+ * The report's other scenario - a schema-qualified table name failing to resolve - is a
+ * case-folding defect covered separately by {@link PostgresqlUppercaseSchemaIT} (issue 656).
+ *
+ * @author Jeff Jensen
+ */
+@EnabledIfSystemProperty(named = "dbunit.profile", matches = "postgresql")
+class PostgresqlNonPublicSchemaDeleteAllIT
+{
+    private static final String SCHEMA = "bi";
+    private static final String TABLE = "app_role_all_children";
+
+    private IDatabaseConnection _connection;
+
+    @BeforeEach
+    protected void setUp() throws Exception
+    {
+        final IDatabaseConnection defaultConnection = DatabaseEnvironment.getInstance().getConnection();
+        try (Statement statement = defaultConnection.getConnection().createStatement())
+        {
+            statement.execute("DROP SCHEMA IF EXISTS " + SCHEMA + " CASCADE;");
+            statement.execute("CREATE SCHEMA " + SCHEMA + ";");
+            statement.execute("CREATE TABLE " + SCHEMA + "." + TABLE
+                    + "(id INTEGER NOT NULL, name VARCHAR(32));");
+            statement.execute("INSERT INTO " + SCHEMA + "." + TABLE
+                    + " (id, name) VALUES (1, 'root'), (2, 'child');");
+        }
+
+        _connection = new DatabaseConnection(defaultConnection.getConnection(), SCHEMA);
+    }
+
+    @AfterEach
+    protected void tearDown() throws Exception
+    {
+        if (_connection != null)
+        {
+            try (Statement statement = _connection.getConnection().createStatement())
+            {
+                statement.execute("DROP SCHEMA IF EXISTS " + SCHEMA + " CASCADE;");
+            }
+            _connection.close();
+            _connection = null;
+        }
+    }
+
+    @Test
+    void testDeleteAll_withUnqualifiedTableNameAndNonPublicConnectionSchema_deletesAllRows()
+            throws Exception
+    {
+        final IDataSet dataSet = new DefaultDataSet(new DefaultTable(TABLE));
+
+        DatabaseOperation.DELETE_ALL.execute(_connection, dataSet);
+
+        final int remainingRows;
+        try (Statement statement = _connection.getConnection().createStatement();
+                ResultSet resultSet =
+                        statement.executeQuery("select count(*) from " + SCHEMA + "." + TABLE))
+        {
+            resultSet.next();
+            remainingRows = resultSet.getInt(1);
+        }
+
+        assertThat(remainingRows).as("remaining row count.").isEqualTo(0);
+    }
+}