diff --git a/History.txt b/History.txt
index 496b030..86f2539 100644
--- a/History.txt
+++ b/History.txt
@@ -1,3 +1,7 @@
+== 0.8.1 2023-09-28
+* Improvements
+  * Support Oracle Database 23c [#229]
+
 == 0.8.0 2021-08-10
 * Improvements and fixes
   * Support Rails 6.1 [#193]
@@ -24,7 +28,7 @@
 
 == 0.7.1 2018-09-03
 * Fix
-  * Address incorrect versions in Gemfile 
+  * Address incorrect versions in Gemfile
 
 == 0.7.0 2018-09-03
 * Improvements and fixes
diff --git a/VERSION b/VERSION
index a3df0a6..6f4eebd 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.8.0
+0.8.1
diff --git a/lib/plsql/jdbc_connection.rb b/lib/plsql/jdbc_connection.rb
index 3b9e127..f9d76d9 100644
--- a/lib/plsql/jdbc_connection.rb
+++ b/lib/plsql/jdbc_connection.rb
@@ -52,8 +52,8 @@ def self.create_raw(params)
       url = if ENV["TNS_ADMIN"] && database && !params[:host] && !params[:url]
         "jdbc:oracle:thin:@#{database}"
       else
-        database = ":#{database}" unless database.match(/^(\:|\/)/)
-        params[:url] || "jdbc:oracle:thin:@#{params[:host] || 'localhost'}:#{params[:port] || 1521}#{database}"
+        database = "/#{database}" unless database.match(/^(\:|\/)/)
+        params[:url] || "jdbc:oracle:thin:@//#{params[:host] || 'localhost'}:#{params[:port] || 1521}#{database}"
       end
       new(java.sql.DriverManager.getConnection(url, params[:username], params[:password]))
     end
diff --git a/ruby-plsql.gemspec b/ruby-plsql.gemspec
index 8c140e3..a5e01cc 100644
--- a/ruby-plsql.gemspec
+++ b/ruby-plsql.gemspec
@@ -3,11 +3,11 @@
 # Instead, edit Juwelier::Tasks in Rakefile, and run 'rake gemspec'
 # -*- encoding: utf-8 -*-
 
-# stub: ruby-plsql 0.8.0 ruby lib
+# stub: ruby-plsql 0.8.1 ruby lib
 
 Gem::Specification.new do |s|
   s.name = "ruby-plsql".freeze
-  s.version = "0.8.0"
+  s.version = "0.8.1"
 
   s.required_rubygems_version = Gem::Requirement.new(">= 0".freeze) if s.respond_to? :required_rubygems_version=
   s.require_paths = ["lib".freeze]