diff --git a/builder/oracle/classic/config.go b/builder/oracle/classic/config.go
index 4cd7c42a7..52a08cbe9 100644
--- a/builder/oracle/classic/config.go
+++ b/builder/oracle/classic/config.go
@@ -3,6 +3,7 @@ package classic
 import (
 	"fmt"
 	"net/url"
+	"os"
 
 	"github.com/hashicorp/packer/common"
 	"github.com/hashicorp/packer/helper/communicator"
@@ -27,6 +28,9 @@ type Config struct {
 	Shape           string `mapstructure:"shape"`
 	SourceImageList string `mapstructure:"source_image_list"`
 	DestImageList   string `mapstructure:"dest_image_list"`
+	// Attributes and Atributes file are both optional and mutually exclusive.
+	Attributes     string `mapstructure:"attributes"`
+	AttributesFile string `mapstructure:"attributes_file"`
 	// Optional; if you don't enter anything, the image list description
 	// will read "Packer-built image list"
 	DestImageListDescription string `mapstructure:"image_description"`
@@ -81,9 +85,21 @@ func NewConfig(raws ...interface{}) (*Config, error) {
 		}
 	}
 
+	if c.Attributes != "" && c.AttributesFile != "" {
+		errs = packer.MultiErrorAppend(errs, fmt.Errorf("Only one of user_data or user_data_file can be specified."))
+	} else if c.AttributesFile != "" {
+		if _, err := os.Stat(c.AttributesFile); err != nil {
+			errs = packer.MultiErrorAppend(errs, fmt.Errorf("attributes_file not found: %s", c.AttributesFile))
+		}
+	}
+
 	if es := c.Comm.Prepare(&c.ctx); len(es) > 0 {
 		errs = packer.MultiErrorAppend(errs, es...)
 	}
+	if c.Comm.Type == "winrm" {
+		err = fmt.Errorf("winRM is not supported with the oracle-classic builder yet.")
+		errs = packer.MultiErrorAppend(errs, err)
+	}
 
 	if errs != nil && len(errs.Errors) > 0 {
 		return nil, errs
diff --git a/builder/oracle/classic/step_create_instance.go b/builder/oracle/classic/step_create_instance.go
index 041889ab1..cf4b043fe 100644
--- a/builder/oracle/classic/step_create_instance.go
+++ b/builder/oracle/classic/step_create_instance.go
@@ -2,7 +2,9 @@ package classic
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
+	"io/ioutil"
 
 	"github.com/hashicorp/go-oracle-terraform/compute"
 	"github.com/hashicorp/packer/helper/multistep"
@@ -30,6 +32,33 @@ func (s *stepCreateInstance) Run(_ context.Context, state multistep.StateBag) mu
 	// get instances client
 	instanceClient := client.Instances()
 
+	var data map[string]interface{}
+
+	if config.Attributes != "" {
+		err := json.Unmarshal([]byte(config.Attributes), &data)
+		if err != nil {
+			err = fmt.Errorf("Problem parsing json from attributes: %s", err)
+			ui.Error(err.Error())
+			state.Put("error", err)
+			return multistep.ActionHalt
+		}
+	} else if config.AttributesFile != "" {
+		fidata, err := ioutil.ReadFile(config.AttributesFile)
+		if err != nil {
+			err = fmt.Errorf("Problem reading attributes_file: %s", err)
+			ui.Error(err.Error())
+			state.Put("error", err)
+			return multistep.ActionHalt
+		}
+		err = json.Unmarshal(fidata, &data)
+		if err != nil {
+			err = fmt.Errorf("Problem parsing json from attrinutes_file: %s", err)
+			ui.Error(err.Error())
+			state.Put("error", err)
+			return multistep.ActionHalt
+		}
+	}
+
 	// Instances Input
 	input := &compute.CreateInstanceInput{
 		Name:       config.ImageName,
@@ -37,6 +66,7 @@ func (s *stepCreateInstance) Run(_ context.Context, state multistep.StateBag) mu
 		ImageList:  config.SourceImageList,
 		SSHKeys:    []string{keyName},
 		Networking: map[string]compute.NetworkingInfo{"eth0": netInfo},
+		Attributes: data,
 	}
 
 	instanceInfo, err := instanceClient.CreateInstance(input)
diff --git a/builder/oracle/classic/step_list_images.go b/builder/oracle/classic/step_list_images.go
index a99612c14..247b96146 100644
--- a/builder/oracle/classic/step_list_images.go
+++ b/builder/oracle/classic/step_list_images.go
@@ -11,11 +11,10 @@ import (
 
 type stepListImages struct{}
 
-func (s *stepListImages) Run(_ context.Context, state multistep.StateBag) multistep.StepAction {
-	// get variables from state
-	ui := state.Get("ui").(packer.Ui)
-	config := state.Get("config").(*Config)
+func (s *stepListImages) listForSSH(state multistep.StateBag) multistep.StepAction {
 	client := state.Get("client").(*compute.ComputeClient)
+	config := state.Get("config").(*Config)
+	ui := state.Get("ui").(packer.Ui)
 	ui.Say("Adding image to image list...")
 
 	imageListClient := client.ImageList()
@@ -98,6 +97,29 @@ func (s *stepListImages) Run(_ context.Context, state multistep.StateBag) multis
 	return multistep.ActionContinue
 }
 
+func (s *stepListImages) listForWinRM(state multistep.StateBag) multistep.StepAction {
+	// This is a placeholder function; we will never reach this because we already
+	// return an error when winRM is set when validating the Packer config.
+	ui := state.Get("ui").(packer.Ui)
+	err := fmt.Errorf("The Oracle Classic builder does not currently support winRM.")
+	ui.Error(err.Error())
+	state.Put("error", err)
+	return multistep.ActionHalt
+}
+
+func (s *stepListImages) Run(_ context.Context, state multistep.StateBag) multistep.StepAction {
+	// get variables from state
+	config := state.Get("config").(*Config)
+
+	var action multistep.StepAction
+	if config.Comm.Type == "winrm" {
+		action = s.listForWinRM(state)
+	} else if config.Comm.Type == "ssh" {
+		action = s.listForSSH(state)
+	}
+	return action
+}
+
 func (s *stepListImages) Cleanup(state multistep.StateBag) {
 	// Nothing to do
 	return
diff --git a/website/source/docs/builders/oracle-classic.html.md b/website/source/docs/builders/oracle-classic.html.md
index f8991b968..98db5f2aa 100644
--- a/website/source/docs/builders/oracle-classic.html.md
+++ b/website/source/docs/builders/oracle-classic.html.md
@@ -63,6 +63,16 @@ This builder currently only works with the SSH communicator.
 
 ### Optional
 
+ -  `attributes` (string) - (string) - Attributes to apply when launching the 
+    instance. Note that you need to be careful about escaping characters due to 
+    the templates being JSON. It is often more convenient to use 
+    `attributes_file`, instead. You may only define either `attributes`  or 
+    `attributes_file`, not both.
+
+ -  `attributes_file` (string) - Path to a json file that will be used for the 
+    attributes when launching the instance. You may only define either 
+    `attributes` or `attributes_file`, not both.
+
  -  `image_description` (string) - a description for your destination
     image list. If you don't provide one, Packer will provide a generic description.
 
@@ -91,7 +101,8 @@ obfuscated; you will need to add a working `username`, `password`,
             "api_endpoint": "https://api-###.compute.###.oraclecloud.com/",
             "source_image_list": "/oracle/public/OL_7.2_UEKR4_x86_64",
             "shape": "oc3",
-            "image_name": "Packer_Builder_Test_{{timestamp}}"
+            "image_name": "Packer_Builder_Test_{{timestamp}}",
+            "attributes": "{\"userdata\": {\"pre-bootstrap\": {\"script\": [\"...\"]}}}",
             "dest_image_list": "Packer_Builder_Test_List"
         }
     ],