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diff --git a/src/test/isolation/specs/inherit-temp.spec b/src/test/isolation/specs/inherit-temp.spec
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+# Tests for inheritance trees with temporary relations
+#
+# Inheritance trees are allowed to mix relations with different persistence
+# as long as a persistent child relation does not try to inherit from a
+# temporary parent.  This checks several scenarios with SELECT, INSERT, UPDATE,
+# DELETE and TRUNCATE.  Any temporary relation inheriting from the same
+# persistent parent should be isolated and handled only in its own session.
+
+setup
+{
+  CREATE TABLE inh_parent (a int);
+}
+
+teardown
+{
+  DROP TABLE inh_parent;
+}
+
+# Session 1 executes actions which act directly on both the parent and
+# its child.  Abbreviation "c" is used for queries working on the child
+# and "p" on the parent.
+session s1
+setup
+{
+  CREATE TEMPORARY TABLE inh_temp_child_s1 () INHERITS (inh_parent);
+}
+step s1_begin { BEGIN; }
+step s1_truncate_p { TRUNCATE inh_parent; }
+step s1_select_p { SELECT a FROM inh_parent; }
+step s1_select_c { SELECT a FROM inh_temp_child_s1; }
+step s1_insert_p { INSERT INTO inh_parent VALUES (1), (2); }
+step s1_insert_c { INSERT INTO inh_temp_child_s1 VALUES (3), (4); }
+step s1_update_p { UPDATE inh_parent SET a = 11 WHERE a = 1; }
+step s1_update_c { UPDATE inh_parent SET a = 13 WHERE a IN (3, 5); }
+step s1_delete_p { DELETE FROM inh_parent WHERE a = 2; }
+step s1_delete_c { DELETE FROM inh_parent WHERE a IN (4, 6); }
+step s1_commit { COMMIT; }
+teardown
+{
+  DROP TABLE inh_temp_child_s1;
+}
+
+# Session 2 executes actions on the parent which act only on the child.
+session s2
+setup
+{
+  CREATE TEMPORARY TABLE inh_temp_child_s2 () INHERITS (inh_parent);
+}
+step s2_truncate_p { TRUNCATE inh_parent; }
+step s2_select_p { SELECT a FROM inh_parent; }
+step s2_select_c { SELECT a FROM inh_temp_child_s2; }
+step s2_insert_c { INSERT INTO inh_temp_child_s2 VALUES (5), (6); }
+step s2_update_c { UPDATE inh_parent SET a = 15 WHERE a IN (3, 5); }
+step s2_delete_c { DELETE FROM inh_parent WHERE a IN (4, 6); }
+teardown
+{
+  DROP TABLE inh_temp_child_s2;
+}
+
+# Check INSERT behavior across sessions
+permutation s1_insert_p s1_insert_c s2_insert_c s1_select_p s1_select_c s2_select_p s2_select_c
+
+# Check UPDATE behavior across sessions
+permutation s1_insert_p s1_insert_c s2_insert_c s1_update_p s1_update_c s1_select_p s1_select_c s2_select_p s2_select_c
+permutation s1_insert_p s1_insert_c s2_insert_c s2_update_c s1_select_p s1_select_c s2_select_p s2_select_c
+
+# Check DELETE behavior across sessions
+permutation s1_insert_p s1_insert_c s2_insert_c s1_delete_p s1_delete_c s1_select_p s1_select_c s2_select_p s2_select_c
+permutation s1_insert_p s1_insert_c s2_insert_c s2_delete_c s1_select_p s1_select_c s2_select_p s2_select_c
+
+# Check TRUNCATE behavior across sessions
+permutation s1_insert_p s1_insert_c s2_insert_c s1_truncate_p s1_select_p s1_select_c s2_select_p s2_select_c
+permutation s1_insert_p s1_insert_c s2_insert_c s2_truncate_p s1_select_p s1_select_c s2_select_p s2_select_c
+
+# TRUNCATE on a parent tree does not block access to temporary child relation
+# of another session, and blocks when scanning the parent.
+permutation s1_insert_p s1_insert_c s2_insert_c s1_begin s1_truncate_p s2_select_p s1_commit
+permutation s1_insert_p s1_insert_c s2_insert_c s1_begin s1_truncate_p s2_select_c s1_commit