diff --git a/test_runner/batch_others/test_oldestXid.py b/test_runner/batch_others/test_oldestXid.py
index 92d5f3e791..332c548ad8 100644
--- a/test_runner/batch_others/test_oldestXid.py
+++ b/test_runner/batch_others/test_oldestXid.py
@@ -24,8 +24,11 @@ def test_oldestxid(zenith_cli, pageserver, postgres, pg_bin, repo_dir):
     cur.execute("INSERT INTO foo VALUES ('bar')");
 
     cur.execute('checkpoint')
-    cur.execute('SELECT oldest_xid FROM pg_control_checkpoint();')
-    oldest_xid = cur.fetchone()[0]
+    cur.execute('SELECT oldest_xid, oldest_xid_dbid, oldest_active_xid FROM pg_control_checkpoint();')
+    res = cur.fetchone()
+    oldest_xid = res[0]
+    oldest_xid_dbid = res[1]
+    oldest_active_xid = res[2]
 
     # Stop, and destroy the Postgres instance. Then recreate and restart it.
     pg_conn.close();
@@ -41,10 +44,17 @@ def test_oldestxid(zenith_cli, pageserver, postgres, pg_bin, repo_dir):
     pg_conn.set_isolation_level(psycopg2.extensions.ISOLATION_LEVEL_AUTOCOMMIT)
     cur = pg_conn.cursor()
 
-    cur.execute('SELECT oldest_xid FROM pg_control_checkpoint();')
-    oldest_xid_new = cur.fetchone()[0]
+    cur.execute('SELECT oldest_xid, oldest_xid_dbid, oldest_active_xid FROM pg_control_checkpoint();')
+    res = cur.fetchone()
+    oldest_xid_new = res[0]
+    oldest_xid_dbid_new = res[1]
+    oldest_active_xid_new = res[2]
 
     assert(oldest_xid_new == oldest_xid)
+    assert(oldest_xid_dbid_new == oldest_xid_dbid)
+
+    # this field should be reset at restart
+    assert(int(oldest_active_xid_new) == 0)
 
     # capture new pg_controldata output for debugging purposes
     pgdatadir = os.path.join(repo_dir, 'pgdatadirs/test_oldestxid')