diff --git a/app/jobs/tag_batch_change_job.rb b/app/jobs/tag_batch_change_job.rb
index 1a91cfeb1..fd03c6247 100644
--- a/app/jobs/tag_batch_change_job.rb
+++ b/app/jobs/tag_batch_change_job.rb
@@ -22,7 +22,7 @@ class TagBatchChangeJob < ApplicationJob
 
   def self.estimate_update_count(antecedent, consequent)
     CurrentUser.without_safe_mode do
-      PostReadOnly.tag_match(antecedent).count
+      Post.tag_match(antecedent).count
     end
   end
 
diff --git a/app/logical/post_query_builder.rb b/app/logical/post_query_builder.rb
index d28d05407..cacad9d82 100644
--- a/app/logical/post_query_builder.rb
+++ b/app/logical/post_query_builder.rb
@@ -1,9 +1,8 @@
 class PostQueryBuilder
-  attr_accessor :query_string, :read_only
+  attr_accessor :query_string
 
-  def initialize(query_string, read_only: false)
+  def initialize(query_string)
     @query_string = query_string
-    @read_only = read_only
   end
 
   def add_range_relation(arr, field, relation)
@@ -117,7 +116,7 @@ class PostQueryBuilder
       q = Tag.parse_query(query_string)
     end
 
-    relation = read_only ? PostReadOnly.all : Post.all
+    relation = Post.all
 
     if q[:tag_count].to_i > Danbooru.config.tag_query_limit
       raise ::Post::SearchError
diff --git a/app/models/post.rb b/app/models/post.rb
index 9c0a68d20..52bbb2dca 100644
--- a/app/models/post.rb
+++ b/app/models/post.rb
@@ -1129,8 +1129,8 @@ class Post < ApplicationRecord
     end
 
     def fast_count_search(tags, timeout:, raise_on_timeout:)
-      count = PostReadOnly.with_timeout(timeout, nil, tags: tags) do
-        PostReadOnly.tag_match(tags).count
+      count = Post.with_timeout(timeout, nil, tags: tags) do
+        Post.tag_match(tags).count
       end
 
       if count.nil?
@@ -1645,8 +1645,8 @@ class Post < ApplicationRecord
       where("posts.tag_index @@ to_tsquery('danbooru', E?)", tag.to_escaped_for_tsquery)
     end
 
-    def tag_match(query, read_only: false)
-      PostQueryBuilder.new(query, read_only: read_only).build
+    def tag_match(query)
+      PostQueryBuilder.new(query).build
     end
   end
   
diff --git a/app/models/post_read_only.rb b/app/models/post_read_only.rb
deleted file mode 100644
index 96d0a1f3d..000000000
--- a/app/models/post_read_only.rb
+++ /dev/null
@@ -1,13 +0,0 @@
-class PostReadOnly < Post
-  establish_connection (ENV["RO_DATABASE_URL"] || "ro_#{Rails.env}".to_sym)
-  attr_readonly *column_names
-
-  def with_timeout(n, default_value = nil)
-    connection.execute("SET STATEMENT_TIMEOUT = #{n}") unless Rails.env == "test"
-    yield
-  rescue ::ActiveRecord::StatementInvalid => x
-    return default_value
-  ensure
-    connection.execute("SET STATEMENT_TIMEOUT = 0") unless Rails.env == "test"
-  end
-end
diff --git a/config/docker/compose.yml b/config/docker/compose.yml
index ca82669a7..f912d6165 100644
--- a/config/docker/compose.yml
+++ b/config/docker/compose.yml
@@ -31,7 +31,6 @@ services:
       - SESSION_SECRET_KEY
       - RAILS_ENV
       - DATABASE_URL
-      - RO_DATABASE_URL
       - DEBUG
       - ARCHIVE_DATABASE_URL
       - DANBOORU_AWS_SQS_ARCHIVE_URL
diff --git a/script/install/database.yml.templ b/script/install/database.yml.templ
index 5caf077ef..fb4795943 100755
--- a/script/install/database.yml.templ
+++ b/script/install/database.yml.templ
@@ -24,27 +24,6 @@ production:
   timeout: 5000
   url: <%= ENV['DATABASE_URL'] %>
 
-# read only databases, just point to local copies if you have no need
-ro_development:
-  adapter: postgresql
-  database: danbooru2
-  url: <%= ENV['RO_DATABASE_URL'] %>
-
-ro_test:
-  adapter: postgresql
-  database: danbooru2_test
-  url: <%= ENV['RO_DATABASE_URL'] %>
-
-ro_production:
-  adapter: postgresql
-  database: danbooru2
-  url: <%= ENV['RO_DATABASE_URL'] %>
-
-ro_staging:
-  adapter: postgresql
-  database: danbooru2
-  url: <%= ENV['RO_DATABASE_URL'] %>
-
 archive_development:
   adapter: postgresql
   database: archive_development