diff -u b/core/modules/system/system.install b/core/modules/system/system.install
--- b/core/modules/system/system.install
+++ b/core/modules/system/system.install
@@ -1535,7 +1535,7 @@
   }
   else {
     // Adds ownership of orphan sequences to tables.
-    $to_process = array_splice($sandbox['tables'], $sandbox['progress'], 50);
+    $to_process = array_slice($sandbox['tables'], $sandbox['progress'], 50);
 
     // Ensures that a sequence is not owned first, then ensures that the a
     // sequence exists at all before trying to alter it.
diff -u b/core/modules/system/tests/modules/pgsql_test/pgsql_test.info.yml b/core/modules/system/tests/modules/pgsql_test/pgsql_test.info.yml
--- b/core/modules/system/tests/modules/pgsql_test/pgsql_test.info.yml
+++ b/core/modules/system/tests/modules/pgsql_test/pgsql_test.info.yml
@@ -6,0 +7 @@
+core_version_requirement: ^8 || ^9