OCI Java SDK 2.66.0 Stream Uploads Buffer Data Unnecessarily and May Cause OutOfMemoryError

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Upgrade to OCI Java SDK version 2.72.0 if you are currently using 2.66.0.

The OCI Java SDK version 2.66.0 contains a bug that causes it to buffer streams unnecessarily. For example, if you upload a stream of size 1 GiB, this will cause the OCI Java SDK to buffer an additional 1 GiB in the heap. This additional memory demand may cause an OutOfMemoryError.

The latest safe version is 2.65.1.

OCI Java SDK 3.x is not affected.

You are affected if:

• you use version 2.66.0
• and you use the Apache Connector (which is the default connector in the OCI Java SDK)
• and you upload streams (e.g. using Object Storage's putObject or uploadPart operations)

Fix:

• Upgrade to version 2.72.0: https://github.com/oracle/oci-java-sdk/releases/tag/v2.72.0

Other possible work-arounds (not recommended anymore):

• downgrade to 2.65.1
• disable the Apache Connector and use the Jersey Default HttpUrlConnectorProvider instead (see https://github.com/oracle/oci-java-sdk/blob/v2.65.1/ApacheConnector-README.md )