reestablish previous connection after creating all databases

creating all databases mutates the connection pool.  This patch restores
the connection pool to the connection spec established before creating
all databases.  Fixes #23279

1 files changed, 4 insertions, 0 deletions

diff --git a/activerecord/lib/active_record/tasks/database_tasks.rb b/activerecord/lib/active_record/tasks/database_tasks.rb
index 8f52e9068a..7dc41fa98c 100644
--- a/activerecord/lib/active_record/tasks/database_tasks.rb
+++ b/activerecord/lib/active_record/tasks/database_tasks.rb
@@ -116,7 +116,11 @@ module ActiveRecord
       end
 
       def create_all
+        old_pool = ActiveRecord::Base.connection_handler.retrieve_connection_pool(ActiveRecord::Base)
         each_local_configuration { |configuration| create configuration }
+        if old_pool
+          ActiveRecord::Base.connection_handler.establish_connection(ActiveRecord::Base, old_pool.spec)
+        end
       end
 
       def create_current(environment = env)