Welcome to the latest release of the Delphix Engine database virtualization system.

New Features

No new features included in PostgreSQL plugin version 1.4.2. This release consists of only bug fixes(listed in this document towards the end).

Plugin Installation

Plugins to support PostgreSQL virtualization are not automatically included in the Virtualization Engine deployment and are installed by Delphix Professional Services or Technical Support. A Support case can be opened requesting installation by following this link.

Migration and Compatibility

Supported Versions

PostgreSQL Standard Versions:

  • PostgreSQL 9.4.x
  • PostgreSQL 9.5.x
  • PostgreSQL 9.6.x
  • PostgreSQL 10.x
  • PostgreSQL 11.x
  • PostgreSQL 12.x

PostgreSQL EDB Versions:

  • PostgreSQL 9.4.x
  • PostgreSQL 9.5.x
  • PostgreSQL 9.6.x
  • PostgreSQL 10.x
  • PostgreSQL 11.x
  • PostgreSQL 12.x

Supported Operating Systems

RHEL/CentOS/SLES - PostgreSQL Open Source & EDB

Supported DBMS Version

9.4.x (Open Source & EDB)

9.5.x (Open Source & EDB)

9.6.x (Open Source & EDB)

10.x (Open Source & EDB)

11.x (Open Source & EDB)

12.x (Open Source & EDB)

Supported OS Version

RHEL/CentOS 7.3SupportedSupportedSupportedSupportedSupportedSupported
RHEL/CentOS 7.4SupportedSupportedSupportedSupportedSupportedSupported
RHEL/CentOS 7.5SupportedSupportedSupportedSupportedSupportedSupported
RHEL/CentOS 7.6SupportedSupportedSupportedSupportedSupportedSupported
RHEL/CentOS 7.8Not SupportedNot SupportedNot SupportedNot SupportedNot SupportedSupported
SLES 11SupportedNot SupportedNot SupportedNot SupportedNot SupportedNot Supported
SLES 12SupportedSupportedSupportedSupportedSupportedNot Supported

where x is the minor version of the PostgreSQL Database.

Plugin/Delphix Engine Compatibility

Plugins should be installed on compatible Delphix Engines per the table below:

Delphix Engine

PostgreSQL 1.0.1

PostgreSQL 1.0.2

PostgreSQL 1.1.0

PostgreSQL 1.2.0

PostgreSQL 1.3.0

PostgreSQL 1.3.1

PostgreSQL 1.3.2PostgreSQL 1.4.0PostgreSQL 1.4.1PostgreSQL 1.4.2

Plugin Upgrade Path

Path A - New Plugin installation for PostgreSQL customers:

  • Upload 1.4.2 Plugin for PostgreSQL 9.4.x, 9.5.x, 9.6.x,10.x, 11.x, and 12.x customers

Path B - Existing PostgreSQL customers with different Plugin version:

Your Version

Recommended Upgrade Path to 1.4.2



Upgrade to 1.1.0 and follow the upgrade path below.


Upgrade to 1.2.0 and follow the upgrade path below.


Upgrade to 1.3.0 and follow the upgrade path below.


Upgrade to 1.4.1 or 1.4.2 the latest plugin for PostgreSQL.

For PostgreSQL customers with plugin version 1.0.1 or 1.0.2 interested in the External Backups feature:

Plugin upgrade path: 1.0.1 → 1.1.0 → 1.2.0 → 1.3.0 → 1.4.1/1.4.2

Plugin upgrade path 1.0.2 → 1.1.0 → 1.2.0 → 1.3.0 → 1.4.1/1.4.2 

For PostgreSQL customers with Plugin version 1.1.0

Plugin upgrade path: 1.1.0 → 1.2.0 → 1.3.0 → 1.4.1/1.4.2 

For PostgreSQL customer with Plugin version 1.2.0

Plugin upgrade path: 1.2.0 → 1.3.0 → 1.4.1/1.4.2

Upgrading Existing Objects

In order to upgrade the existing objects with 1.1.0 (i.e 1.0.1 → 1.1.0 or 1.0.2 → 1.1.0), just after the upgrade, it is mandatory to update below two parameters of dSource using the "custom Configuration" option on the UI :

  • Source IP Address
  • Source Port

A critical fault will show up on dSource just after the upgrade. It is because the engine is not able to find the source config from which dSource was created. As we have moved to manual discovery in this release, we need to mark this fault as resolve on the status tab of dSource.

Unsupported PostgreSQL Versions and Features

  • PostgreSQL versions below 9.4 i.e 9.2, 9.3  (including the minor versions) are not supported.
  • It is not possible to access the staging server with PostgreSQL 9.4 and PostgreSQL 9.5 versions.
  • Broadly there are two features that are not supported by the plugin:
    • Unlogged Tables: All the tables which are not logged (unlogged) will not be supported by the Plugin.
    • Point In Time recovery: Currently, the plugin doesn’t support Point in Time recovery of the PostgreSQL database.

Fixed Issues

PostgreSQL version 1.4.2 contains the following bug fixes:




`data_directory` parameter in the postgresql.conf file is causing failure in dSource and VDB flow


Linking Fails if the parameter which needs to be configured is commented through multiple `#`

POST-276Linking Fails if the mandatory parameter required to setup replication is commented in config file