2025.5 release notes

September 2025

Continuous Data 2025.5.0.0 introduces Offline replication (air gap) for secure data transfer across isolated environments, AWS Secure Boot support for enhanced EC2 protection, and a preview of Incremental V2P for Oracle to accelerate disaster recovery. This release also adds Windows Server 2025 SQL Server certification, numerous bug fixes, and API enhancements to improve performance, compliance, and manageability.

On this page:

New features

Offline replication

Delphix now enables secure data replication between environments that cannot be directly connected, using an offline replication option. Initially supported via NFS only, this feature allows data from a source engine to be safely transferred and then accessed by a target engine in another segregated zone. This approach ensures compliance with strict isolation requirements while still providing seamless data movement across environments. For more information, read Offline replication (air gap).

AWS Secure Boot instance support for Delphix engines

Secure Boot enhances the existing Amazon EC2 secure boot process by adding an extra layer of protection against threats that can survive reboots. It ensures instances only launch software signed with trusted cryptographic keys stored in the UEFI key database. For more information, read Deployment for AWS EC2.

Incremental V2P for Oracle (preview)

Traditional Delphix V2P exports data from an Oracle virtual database (VDB) to a physical database in one full operation. Incremental V2P takes this further by creating the VDB and physical database in parallel. This means that while the VDB is being actively used to recover applications in a disaster recovery or ransomware scenario, the physical database is being built in the background. When it’s time to restore production, the physical database is already in place, requiring only the latest deltas from the VDB. This release includes a preview of this feature for customers to test, with full general availability expected in November 2025.

Windows SQL Server certification

Delphix certified Windows Server 2025 for SQL Server data sources on Standalone Hosts in this release.

Windows 2025 does not come with PowerShell 2.0 because it deprecated and was removed from Windows. Delphix has not tested the use of PowerShell 2.0 for Windows 2025. If you want to use PowerShell 2.0 for hook operations, you set it up yourself and must be aware of the corresponding risks. Refer to the Microsoft documentation for the removal of PowerShell 2.0 from Windows.

Fixed issues

Release 2025.5.0.2 (October 2025)

Issue number	Description
DLPX-95573	Fixed an issue with connecting the Delphix engine to the hypervisor's graphical console.

Release 2025.5.0.1 (September 2025)

Issue number	Description
DLPX-95479	Fixed an issue where automatic replication fails after upgrading to 2025.5.0.0.

Release 2025.5.0.0 (September 2025)

Issue number	Description
DLPX-91568	Fixed an issue where migrating a VDB created from a replicated snapshot failed with "Internal Server Error" after replication deletes this replicated snapshot because it gets deleted from the source engine.
DLPX-92249	Fixed a bug that caused `ENVIRONMENT_DISCOVER` jobs to fail due to an internal error if you delete environment users with Oracle CDB configs, discovered but not linked, that used this environment user.
DLPX-93743	Removed the Deny Delete permission from database files for Staging Push sources, to provide you with greater flexibility in managing these sources.
DLPX-93758	Fixed an issue where, under rare circumstances, some internal services within the Delphix engine activated during upgrades before the upgrades completed.
DLPX-94245	Enhanced the ZFS object storage interface to restart the object agent when necessary.
DLPX-94504	Fixed an issue where the upgrade screen would provide incorrect guidance for Continuous Compliance and Data Control Tower engine versions.
DLPX-94669	Fixed an issue where Oracle dSource LogSync failed with "Internal Server Error" while looking for a non-existent debug log file on the remote host.
DLPX-94671	Added the timeout in the toolkit creation script on Windows hosts.
DLPX-94821	Improved the performance of deleting log files from the ARCHIVE folder as part of MSSQL Server transaction log retention.
DLPX-94954	Fixed an issue when creating a replication profile in the Continuous Data UI without specifying a bandwidth limit that set a limit of 5MB/s by default.
DLPX-95105	Fixed an issue where Oracle VDB refresh fails with an error `"exception.dhm.push.scripts.failed"` when you mount the toolkit directory on a NFSv3 share.
DLPX-95169	Fixed an issue where OCI Vault provisioning/refresh/rollback failed with "ORA-46653: cannot retrieve master key information".
DLPX-95265	Fixed an issue with the bootloader affecting systems initially installed on 5.3.9.0 or earlier.

Known issues

Key	Summary	Workaround
DLPX-93207	dNFS is not used with NFSV4 if provision is run with a delphix OS user.	Provide `rw` permissions to any user (delphix_os or non-oracle user) running VDB/vPDB operations on `oranfstab` file. Alternatively, a less preferable workaround is to switch engine NFS config to force NFSv3 in which case Oracle does not need these entries in the `oranfstab` file but this will impact every VDB/vPDB on that engine.
DLPX-93860	Migrating a vCDB/vPDB to a host with a different timezone will result in all SnapSyncs failing.	None
DLPX-95146	A failed vPDB provisioning validation (due to a failure to enable NFSv3 service or retrieving the NFS version) may leave an orphaned filesystem under rpool/public on the Delphix engine, potentially causing upgrades to fail.	Restart the mgmt stack and try the upgrade again.
DLPX-95341	OCI image is not available for 2025.5 due to cloud platform integration issues.	For new engine deployments, install 2025.4 and upgrade to 2025.5.
DPLX-95446	IBM cloud image is not available for 2025.5 due to cloud platform integration issues.	For new engine deployments, install 2025.4 and upgrade to 2025.5.
DLPX-95934	VDBs running on Solaris may fail to come online after upgrading to 2025.4.0.* or newer.	Enable dNFS on affected Solaris VDBs.

API changes

In Delphix 2025.5.0.0, the new API version is 1.11.45. This section describes all API changes since API version 1.11.44 which was released with Continuous Data 2025.4.0.0. All URL paths are relative to /resources/json/delphix

Updates

API object	Path	Type	Name	Change
`LdapServer`	`service/ldap/server`	Property	`baseDn searchFilter msadDomain`	New properties added.
`OracleProvisionParameters`	NA	Property	`physicalStandby`	Property removed.
`OracleSnapshot`	NA	Property	`fromPhysicalStandbyVdb`	Property removed.
`ReplicationTargetState`	`replication/targetstate`	Property	`bytesTransferred fileTransferThroughput lastSendTimestamp lastOfflineSerializationPointId lastOfflineReceiveDataDir`	New properties added.
`SerializationPoint`	`replication/serialization`	Property	`streamThroughput fileTransferThroughput`	New properties added.
`SystemInfo`	system	Property	`usingObjectStorage`
`Timeflow`	timeflow	Enum	`INCREMENTAL_V2P`	New `CreationType` enum added.
`TimeZone`	timezone	Enum	`America/Coyhaique`	New property enum added.

Additions

API object	Path	Type	Name	Change
`OfflineReplicationReceiveSpec`	NA	Property	`OfflineReplicationReceiveSpec`	New property added.
`ReplicationOfflineTraffic`	NA	Property	`ReplicationOfflineTraffic`	New property added.