1 files changed, 4 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
index 2f4b2b9a3a..1c469f44a1 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
@@ -55,7 +55,10 @@ module ActiveRecord
       def initialize(connection, logger, config = {})
         super(connection, logger)
         @config = config
-        @async = config[:allow_concurrency]
+
+        # Ignore async_exec and async_query with the postgres-pr client lib.
+        @async = config[:allow_concurrency] && @connection.respond_to(:async_exec)
+
         configure_connection
       end