delphix concepts oracle updated

8/18/2019 Delphix Concepts Oracle Updated

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elphix Concepts

for Oracle

Database Virtualization Overview


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Course Modules

The Need for Agile Data

• Why database virtualization helps

• What is Delphix?

Delphix Overview for Oracle• The Delphix Server

• dSources

• VDBs

Delphix Concepts

• TimeFlow

• Syncing

• Provisioning


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Motivation for Virtualization

• How much storage is allocated to dev, test, and QA databases that are over

90% identical to production and one another?

• How much of the DBA team’s time is spent refreshing pre-production

database environments?

–

How frequently does development want refreshes, and how frequently do theyactually happen?


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Faster, Better, Cheaper: Pick 2

• Faster: create fully functional copies of live databases in minutes

• Better: Allow developers to self-service their requests: create, rewind, and

copy databases on demand

• Cheaper: provision fully functional test/dev/QA/reporting databases using

a tiny fraction of the storage required for one copy of production

3^


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What is elphix?

• Delphix Server is a software appliance

– Delivered as a Virtual Machine

– Not an application

• Delphix Server is a platform for database management

– Manages storage for databases

– Manages process, configuration, and policies for refresh

– Does not run Oracle itself


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Current Refresh (without elphix)

Existing Copy and

Refresh Process*

* http://enterarena.blogspot.com/2011/05/gif-rube-goldberg-machine.html

1 TB Storage 1 TB Storage

Production Development


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elphix Refresh

1 TB Storage


* click *

Delphix Server GUI


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Course Modules




Delphix Overview for Oracle

• The Delphix Server

• dSources

• VDBs

Delphix Concepts

• TimeFlow

• Syncing

• Provisioning


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Key Terms

Terms for Production

Environment

Terms for the Delphix

Appliance

Terms for Pre-Production

Environment

Source host Delphix Server Target host

Source database dSource VDB


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Key Terms: Source Host


The source host is the host on which the instance for the

source database runs. Typically this is the production host.


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Key Terms: Source atabase

1 TB Storage


The source database is copied into the Delphix Server viaRMAN APIs. Delphix Server then stays in sync via

incremental RMAN backups and by collecting redo.


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Key Terms: elphix Server

1 TB Storage


The Delphix Server acts as a backup destination for the sourcedatabases, and as network attached storage for VDBs.

It also hosts the Delphix management GUI.


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Key Terms: dSource

1 TB Storage


The dSource is the Delphix Server’s compressed representation

of the source database. It is the basis for the storage that is

allocated to a VDB.

~256 GB Storage

for dSource


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Key Terms: Target Host

1 TB Storage


The target host is the host on which the instance for the VDB

runs. Typically this is wherever the pre-prod database runs today.

~256 GB Storage

for dSource


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Key Terms: V B

1 TB Storage


The VDB is a fully functional database running on a target host.

The storage for a VDB is managed by Delphix, and provided to the

target host via NFS. Changes are stored in the Delphix Server.

~256 GB Storage

for dSourceNo additional storage

for VDB outside of

Delphix

Only changes

stored for VDB


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elphix Overview

1 TB Storage ~256 GB Storage

for dSource


No additional storage

for VDB outside of

Delphix

Only changes

stored for VDB


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Course Modules




Delphix Overview for Oracle

• The Delphix Server

• dSources

• VDBs

Delphix Concepts

• TimeFlow

• Syncing

• Provisioning


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Key Concepts

TimeFlow

• Create databases copies

from any point in time

Storage Consolidation

• Do not copy redundant

blocks

• Do not store unused blocks

• Compress necessary blocks


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Key Concepts: TimeFlow

Each dSource, and each VDB, has its own TimeFlow, copies can be made as of

any point within the

TimeFlow:


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• TimeFlow uses two mechanisms to provide point in time provisioning:

– Periodic backups of the dSource or VDB

– Redo collection for all time between backups

• The duration of the TimeFlow window depends on how long backups and

redo are retained, and is configured via policy in the Delphix GUI:


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• For dSources:

– Backup snapshots are taken via the Delphix “SnapSync” service

– Redo is collected via the licensed Delphix “LogSync” service

• For VDBs:

–

Backup snapshots are taken via the Delphix “SnapSync” service – Redo is automatically collected, as VDBs are automatically placed in

ARCHIVELOG mode and their log destination is managed by Delphix


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delphix concepts oracle updated

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