# File lib/sequel/adapters/oracle.rb, line 21
21:       def initialize(opts={})
22:         super
23:         @autosequence = opts[:autosequence]
24:         @primary_key_sequences = {}
25:         @conversion_procs = ORACLE_TYPES.dup
26:       end

    # File lib/sequel/adapters/oracle.rb, line 28
28:       def connect(server)
29:         opts = server_opts(server)
30:         if opts[:database]
31:           dbname = opts[:host] ? \
32:             "//#{opts[:host]}#{":#{opts[:port]}" if opts[:port]}/#{opts[:database]}" : opts[:database]
33:         else
34:           dbname = opts[:host]
35:         end
36:         conn = OCI8.new(opts[:user], opts[:password], dbname, opts[:privilege])
37:         conn.prefetch_rows = typecast_value_integer(opts[:prefetch_rows]) if opts[:prefetch_rows]
38:         conn.autocommit = true
39:         conn.non_blocking = true
40:         
41:         # The ruby-oci8 gem which retrieves oracle columns with a type of
42:         # DATE, TIMESTAMP, TIMESTAMP WITH TIME ZONE is complex based on the
43:         # ruby version (1.9.2 or later) and Oracle version (9 or later)
44:         # In the now standard case of 1.9.2 and Oracle 9 or later, the timezone
45:         # is determined by the Oracle session timezone. Thus if the user
46:         # requests Sequel provide UTC timezone to the application,
47:         # we need to alter the session timezone to be UTC
48:         if Sequel.application_timezone == :utc
49:           conn.exec("ALTER SESSION SET TIME_ZONE='-00:00'")
50:         end
51:         
52:         class << conn
53:           attr_reader :prepared_statements
54:         end
55:         conn.instance_variable_set(:@prepared_statements, {})
56:         
57:         conn
58:       end

    # File lib/sequel/adapters/oracle.rb, line 60
60:       def execute(sql, opts={}, &block)
61:         _execute(nil, sql, opts, &block)
62:       end

    # File lib/sequel/adapters/oracle.rb, line 65
65:       def execute_insert(sql, opts={})
66:         _execute(:insert, sql, opts)
67:       end