Object Storage Multipart Uploads

Learn how to use multipart uploads to move objects larger than 100 MB more efficiently and with greater resiliance.

The Oracle Cloud Infrastructure Object Storage service supports multipart uploads for more efficient and resilient uploads, especially for large objects. You can perform multipart uploads using the API, the Software and Development Kits (SDKs), or the Command Line Interface (CLI). The Console uses multipart uploads to upload objects larger than 64 MiB.

With multipart uploads, individual parts of an object can be uploaded in parallel to reduce the amount of time you spend uploading. Multipart uploads performed through the API can also minimize the impact of network failures by letting you retry a failed part upload instead of requiring you to retry an entire object upload.

Multipart uploads accommodate objects that are too large for a single upload operation. We recommend that you use multipart uploads to upload objects larger than 100 MiB. The maximum size for an uploaded object is 10 TiB. Object parts must be no larger than 50 GiB. Using multipart uploads, you have the flexibility of pausing between the uploads of individual parts, and resuming the upload when your schedule and resources allow.

You can use object lifecycle policy rules to automatically delete any uncommitted or failed multipart uploads after a specified number of days. See Object Lifecycle Management for details.

You can perform the following multipart upload tasks:

Required IAM Policy

To use Oracle Cloud Infrastructure, you must be granted security access in a policy  by an administrator. This access is required whether you're using the Console or the REST API with an SDK, CLI, or other tool. If you get a message that you don't have permission or are unauthorized, verify with your administrator what type of access you have and which compartment  to work in.

If you are new to policies, see Getting Started with Policies and Common Policies.

For administrators:

  • You can create a policy that lets the specified IAM group manage Object Storage namespaces, buckets, and their associated objects in all compartments in the tenancy:

    Allow group <IAM_group_name> to manage object-family in tenancy
  • You can also create policies that reduce the scope of access. For example, to let the specified group manage only buckets and objects in a particular compartment in the tenancy:

    Allow group <IAM_group_name> to manage buckets in compartment <compartment_name>

If you write more restrictive policies, ensure that you include the permissions required for multipart uploads. The user needs a policy that grants both OBJECT_CREATE and OBJECT_OVERWRITE permissions.

For more information about other alternatives for writing policies, see Details for Object Storage, Archive Storage, and Data Transfer.

Monitoring Resources

You can monitor the health, capacity, and performance of your Oracle Cloud Infrastructure resources by using metrics, alarms, and notifications. For more information, see Monitoring and Notifications.

For more information about monitoring multipart uploads, see Object Storage Metrics.