ルビー-oci8の：ORA-12514：TNS：リスナーは現在、接続記述子に

Question

を要求されたサービスを知っていない私は、最新のでのOracle DBに接続しようとしましたが、Windows 7のx64のPCのルビー-oci8の宝石ををoracle_enhanced以下のように、それは失敗しました：

$ ruby oracle_db_connection.rb 
oci8.c:654:in oci8lib_230.so: ORA-12514: TNS:listener does not currently know of service requested in connect descriptor (OCIError) 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/ruby-oci8-2.2.2-x64-mingw32/lib/oci8/oci8.rb:142:in `initialize' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-oracle_enhanced-adapter-1.6.7/lib/active_record/connection_adapters/oracle_enhanced/oci_connection.rb:333:in `new' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-oracle_enhanced-adapter-1.6.7/lib/active_record/connection_adapters/oracle_enhanced/oci_connection.rb:333:in `new_connection' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-oracle_enhanced-adapter-1.6.7/lib/active_record/connection_adapters/oracle_enhanced/oci_connection.rb:393:in `initialize' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-oracle_enhanced-adapter-1.6.7/lib/active_record/connection_adapters/oracle_enhanced/oci_connection.rb:26:in `new' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-oracle_enhanced-adapter-1.6.7/lib/active_record/connection_adapters/oracle_enhanced/oci_connection.rb:26:in `initialize' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-oracle_enhanced-adapter-1.6.7/lib/active_record/connection_adapters/oracle_enhanced/connection.rb:9:in `new' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-oracle_enhanced-adapter-1.6.7/lib/active_record/connection_adapters/oracle_enhanced/connection.rb:9:in `create' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-oracle_enhanced-adapter-1.6.7/lib/active_record/connection_adapters/oracle_enhanced_adapter.rb:156:in `oracle_enhanced_connection' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:438:in `new_connection' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:448:in `checkout_new_connection' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:422:in `acquire_connection' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:349:in `block in checkout' 
     from C:/Ruby23-x64/lib/ruby/2.3.0/monitor.rb:214:in `mon_synchronize' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:348:in `checkout' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:263:in `block in connection' 
     from C:/Ruby23-x64/lib/ruby/2.3.0/monitor.rb:214:in `mon_synchronize' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:262:in `connection' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:571:in `retrieve_connection' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-4.2.6/lib/active_record/connection_handling.rb:113:in `retrieve_connection' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-4.2.6/lib/active_record/connection_handling.rb:87:in `connection' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-4.2.6/lib/active_record/model_schema.rb:230:in `table_exists?' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-4.2.6/lib/active_record/attribute_methods/primary_key.rb:97:in `get_primary_key' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-4.2.6/lib/active_record/attribute_methods/primary_key.rb:85:in `reset_primary_key' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-4.2.6/lib/active_record/attribute_methods/primary_key.rb:73:in `primary_key' 
     from C:in `primary_key' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-4.2.6/lib/active_record/relation/finder_methods.rb:493:in `find_nth_with_limit' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-4.2.6/lib/active_record/relation/finder_methods.rb:484:in `find_nth' 
     from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/activerecord-4.2.6/lib/active_record/relation/finder_methods.rb:127:in `first' 
     from C:in `first' 
     from oracle_db_connection.rb:30:in `<main>' 

私はダウンロードして、Oracleインスタントクライアントをインストールして

**C:\Program Files\Oracle\instantclient_12_1** 

にそれを解凍し、私は環境変数Tを追加しましたNS_ADMINはを指します。C：¥Program Files¥Oracle¥instantclient_12_1。 パスにTNS_ADMINを追加しました。シンプルなRubyスクリプト実行している場合

：

connection = ActiveRecord::Base.establish_connection(
    adapter: 'oracle_enhanced', 
    database: 'my_db_sid', 
    host: 'my_db_host', 
    port: 1531, 
    username: 'username', 
    password: 'password' 
) 
puts connection.inspect 



#class Customer < ActiveRecord::Base 
# self.table_name = 'CUSTOMER' 
#end 
# 
#puts "First: #{Customer.first}" 

ここで間違っているものを上の任意のアイデア：私はCustomerテーブルへの呼び出しを削除すると

require 'active_record' 

ActiveRecord::Base.establish_connection(
    adapter: 'oracle_enhanced', 
    database: 'my_db_sid', 
    host: 'my_db_host', 
    port: 1531, 
    username: 'username', 
    password: 'password' 
) 


class Customer < ActiveRecord::Base 
    self.table_name = 'CUSTOMER' 
end 

puts "First: #{Customer.first}" 

を、私は、接続オブジェクトを調べることができますか？このスクリプトは他のPCでは正常に動作しましたが、他のDBや環境では正常に動作しました。したがって、使用される設定は問題ありません。 ありがとうございます。

環境：

• のWindows 7×64ビットのRuby 2.3
• のActiveRecord-oracle_enhancedアダプタ（1.6.7）
• ルビーOCI8（2.2.2のx64-MINGW32）

Answer 1

databaseセクションの別の形式を使用する必要があります。私は2つのいずれかのデータベースに接続する方法を考え出し

adapter: "oracle_enhanced" 
    username: "db_user" 
    database: "//my.host/my.sid" 
    password: "passw0rd" 

Answer 2

：ここに私の設定です。少なくともSqldeveloper v 4.1.3.20では設定が異なります。ここで

私のために働い設定されている（注意してください、それは、Railsのコンテキストのうち、ちょうどルビーファイルです）：

require 'active_record' 

ActiveRecord::Base.establish_connection(
    adapter: 'oracle_enhanced', 
    host: 'as specified in the field Host name of SQL developer', 
    port: 'as specified in the field Port of SQL developer', 
    database: 'as specified in the fiels Service name of SQL developer', 
    username: 'username', 
    password: 'userpassword' 
) 
class Department < ActiveRecord::Base 
    self.table_name = 'DEPARTMENTS' 
end 

puts "First found department: #{Department.first.inspect}" 

第二のデータベースは、SQL Developerで異なる設定があります。

HOST = "your host" 
PORT = XXXX #your port number 
SID = 'your SID' 

ActiveRecord::Base.establish_connection(
     adapter: 'oracle_enhanced', 
     database: "(DESCRIPTION= 
      (ADDRESS_LIST=(ADDRESS=(PROTOCOL=tcp)(HOST=#{HOST})(PORT=#{PORT}))) 
      (CONNECT_DATA=(SID=#{SID})) 
     )", 
     username: 'user', 
     password: 'secret' 
    ) 

：

- host: some_host_url 
- port: some port number 
- SID: some SID value 

最後soltionは、以下の設定を追加しました

これが役立つことを願っています。求めたように変更