diff --git a/app/controllers/concerns/cached_responses.rb b/app/controllers/concerns/cached_responses.rb
index 95fa2a0..05d7be1 100644
--- a/app/controllers/concerns/cached_responses.rb
+++ b/app/controllers/concerns/cached_responses.rb
@@ -10,7 +10,7 @@ module CachedResponses
   end
 
   def perform_caching
-    return false unless super && @response_cache_version.present? && !ActiveRecord::Base.connection.transaction_open?
+    return false unless super && @response_cache_version.present? && !ActiveRecord::Base.connection_pool.active_connection?&.transaction_open?
 
     # Check again after authentication, before the first native fragment lookup.
     # Later renders retain this immutable namespace and cannot poison a new epoch.
@@ -103,7 +103,7 @@ module CachedResponses
         !authenticated_by.bot_key? && flash.empty? &&
         !request.headers["If-None-Match"] && !request.headers["If-Modified-Since"] &&
         !Rails.application.config.content_security_policy_nonce_generator &&
-        !ActiveRecord::Base.connection.transaction_open?
+        !ActiveRecord::Base.connection_pool.active_connection?&.transaction_open?
     end
 
     def response_cache_key(encoding)
diff --git a/app/models/record_cache.rb b/app/models/record_cache.rb
index 03924a6..2446093 100644
--- a/app/models/record_cache.rb
+++ b/app/models/record_cache.rb
@@ -2,7 +2,7 @@
 # The observer must still see the captured epoch after lookup and admission.
 class RecordCache
   def self.fetch(key, version)
-    return yield unless version && ResponseCache.instance.budget.positive? && !ActiveRecord::Base.connection.transaction_open?
+    return yield unless version && ResponseCache.instance.budget.positive? && !ActiveRecord::Base.connection_pool.active_connection?&.transaction_open?
 
     key = ActiveSupport::Cache.expand_cache_key([ "record-snapshot-v1", version, key ])
     return yield if key.bytesize > ResponseCache::MAX_KEY_BYTES