Dias nummer 1 - DOAG

© dbi services © dbi services

Jérôme Witt

Consultant

Oracle Certified Professional 11g

Yann Neuhaus

Principal Consultant

Region Manager - CEO

dbi services

Dbvisit Standby

www.dbi-services.com 1 18.10.2012


Experts At Your Service

25 specialists in IT infrastructure

Certified, experienced, passionate

Sharing a customer-oriented approach

Based In Switzerland

100% self-financed Swiss company

More than CHF 3 mio. in sales

Offices: BaselArea & Lausanne, German, French, & English spoken

Leading In Infrastructure Services

Over 70 customers in CH, D, & F

25 SLAs dbi FlexService signed

Long-standing expertise, technical leadership, ISO 20000 certified

dbi services

Who We Are



Agenda Agenda

Dbvisit Standby

Agenda

i. Who is Dbvisit?

ii. What is Dbvisit Standby?

iii. Architecture

iv. How to setup?

v. Operate Dbvisit Standby



Who is Dbvisit?

Established in 2006

Headquarter based in New Zealand

Sales offices in US, Netherlands & France

Specialized in replication solutions

Focused on Oracle Standard Edition

dbi services and Dbvisit

dbi is the 1st and only dbvisit Platinum partner is Switzerland

Several successful projects already done and more coming

Hublot

Kantonsspital Bruderholz

Dbvisit Standby

Who is Dbvisit?



Dbvisit Replicate

What are their products ?


Real-time data replication for Oracle to Oracle MySQL (innoDB) MS SQL

Real-time replication for reporting databases Powered by Dbvisit Replicate

Disaster recovery Standby databases for Oracle Standard Edition


Agenda Agenda

Dbvisit Standby

Agenda

i. Who is Dbvisit?

ii. What is Dbvisit Standby?

iii. Architecture

iv. How to setup?

v. Operate Dbvisit Standby



A Data Availability solution

Maintain a standby database

Based on archivelogs transfer and recover on standby side

Provide a hot “backup” available 7x24

Allows switchover in a matter of minutes

Helps to protect against

Hardware failures

Data corruption

Human errors

Site disaster

Dbvisit Standby

What is Dbvisit Standby ?



Oracle released supported

8i to 11g

32 bits and 64 bits

Express to Enterprise Edition, including

Standard Edition One

Real Application Cluster (RAC)

Automatic Storage Management (ASM)

Supported OS

Windows 2000 to 2008, XP & 7

Linux: Intel & Itanium

Unix: Solaris, HP-UX & AIX

Dbvisit Standby




Dbvisit Standby pros

Easy to implement & operate

Command line and Web interface

Efficient Data Availability

Cost efficient solution

Based on Oracle Standard Edition

Dbvisit Standby cons

No Service Availability (RTO)

No automatic failover

Reduced data availability (RPO)

Between 1 and 10 min. data loss

No old primary reinstate

Standby to be recreated after a failover

Dbvisit Standby




Licensing model

Perpetual license – no renewal

Standby server license included

In RAC all sockets in the cluster count

Dbvisit Standby



Single Instance Multiple Instances Max Sockets

Standard One (DS1) $ 4’176 $ 7’101 2

Standard (DS) $ 5’597 $ 9’514 4

Enterprise (DE) $ 7’016 $ 11’928 6

Enterprisex (DX)

$ 8’438 $ 14’342 No limit


Agenda Agenda

Dbvisit Standby

Agenda

i. What is Dbvisit Standby?

ii. Architecture

iii. How to setup?

iv. Operate Dbvisit Standby



Based on archivelogs transfer

Dbvisit Standby

Architecture


Primary Server Standby Server


Dbvisit standby binaries

«dbvisit_setup »

«dbvisit»

«dbv_oraStartStop»

«dbv_functions»

Dbvisit Standby

Architecture


[oracle@vmdbvtest1 ~]$ cd /u00/app/dbvisit/standby-6.0.34/

[oracle@vmdbvtest1 standby-6.0.34]$ ls

dbvserver dbvserverd README.txt standby

[oracle@vmdbvtest1 standby-6.0.34]$ cd standby/

[oracle@vmdbvtest1 standby]$ ls

dbv_functions dbvisit_setup dbv_oraStartStop README.txt

dbvisit dbv_ORACLE_SID.env online_user_guide_reference.txt


Dbvisit standby configuration

DDC file

Contains all Dbvisit configuration variables

ASCII file, similar format as Oracle Init file

One file per database configuration

Default Name: dbv_<SID>.env

Archivelogs Management Module policy

Allows to manage both primary and standby archivelogs

Based on date and storage usage thresholds

dbi services recommendation

Primary archivelogs management : DEACTIVATED

Standby archivelogs management : ACTIVATED

Dbvisit Standby

Architecture



Dbvisit standby configuration

DDR repository

Dbvisit Database Repository

Dedicated schema in the managed database

Used to manage standby processes

Dbvisit Standby

Architecture


TABLE_NAME

------------------------------

DBV_VERSION DBV_REGISTER

DBV_ADD_DATAFILE DBV_CR_STDBY_INIT_ORA_T

DBV_CR_STDBY_FILE_RENAME_T DBV_CR_STDBY_T

DBV_CR_STDBY_INIT_ORA DBV_CR_STDBY_FILE_RENAME

DBV_CR_STDBY_DATAFILE_OPS DBV_CR_STDBY_THREAD_SEQ

DBV_CR_STDBY_FILE_STAT DBV_CR_STDBY_HIST

DBV_CR_STDBY DBV_SEQUENCE_LOG

DBV_TRANSFER_LOG


Web Interface - optional

«Dbvserverd»

Dbvisit Standby

Architecture



Agenda Agenda

Dbvisit Standby

Agenda


ii. Architecture

iii. How to setup?




Configuring a Dbvisit Standby environment is:

Dbvisit Standby

How to setup?


Install Dbvisit Standby

Create a configuration

Create a Standby database



Software binaries are delivered as a zip file

dbi standards for installation path is

/u00/app/dbvisit/<product>-<version> (DBVISIT_BASE)

/u00/app/dbvisit/standby-6.0.34

Once extracted, install Dbvisit by running

/tmp/dbvisit/dbvisit_install

Must be installed on both primary and standby servers

Dbvisit Standby

How to setup?




Installation pre-requirements

Oracle software installed on both primary and standby server

SSH keys exchanged between both server

Change permission on dbvisit_install

Dbvisit Standby

How to setup?


[oracle@vmdbvtest1 ~]$ cd /tmp/dbvisit/

[oracle@vmdbvtest1 dbvisit]$ chmod 750 ./dbvisit_install

[oracle@vmdbvtest1 dbvisit]$ ll /u00/app/dbvisit/standby-6.0.34

total 19040

-rwxr-x--- 1 oracle oracle 8230514 Jul 25 10:29 dbvisit_install

drwxrwxr-x 5 oracle oracle 4096 Aug 17 08:57 dbvserver

-rw-rw-r-- 1 oracle oracle 11141528 Jul 25 10:29 dbvserverd

-rw-rw-r-- 1 oracle oracle 76275 Jul 25 10:01 README.txt

drwxrwxr-x 2 oracle oracle 4096 Aug 17 08:57 standby



Run installation – dbvisit_install

Dbvisit Standby

How to setup?


[oracle@vmdbvtest1 dbvisit]$ ./dbvisit_install

------------------------------------------------------------------

Welcome. Your Dbvisit Standby product is going to be installed now...

This will install:

- Dbvisit Standby command line version

- Dbvserver (to provide a web interface to Dbvisit Standby)

------------------------------------------------------------------

It is recommended to make a backup of our current Dbvisit

software location for rollback purposes.

> Oracle user name on this server? [default: "oracle"]

Enter a custom value or press ENTER to accept default:



Run installation – dbvisit_install

Dbvisit Standby

How to setup?


> Turn on automatic email to Dbvisit support: Yes/No [default: "Yes"]

Enter a custom value or press ENTER to accept default: No

...

> Start Dbvserver: Yes/No [default: "Yes"]

Enter a custom value or press ENTER to accept default: Yes

...

Stopping all old dbvserverd processes possibly running...

Updating Dbvserver configuration file...

A new Dbvisit Standby installation will be performed...

Creating installation sub-directories...

Installing product files...

==> Dbvisit product installation complete.



Dbvisit Standby

How to setup?






Configure Dbvisit Standby

Run <DBVISIT_BASE>/standby/dbvisit_setup

Go through the command line wizard

Wizard allows to

Configure

Operate

Uninstall

Main menus

Menu 1: Configure dbvisit including DDC & DDR

Menu 2 to 4: Configure individual components

Menu 5 to 6: Manage DDR & Update DDC

Dbvisit Standby

How to setup?



Dbvisit Standby

How to setup?


Dbvisit Database setup

Default values will be shown in []

Options:

1) New Dbvisit Database setup (combines options 2,3,4)

1a) New Dbvisit RAC Instance setup (combines options 2,3,4)

2) New Dbvisit Database configuration (DDC) file setup

3) New Dbvisit Archive Management Module (AMM) setup

4) New Dbvisit Database repository (DDR) setup

5) Manage Dbvisit Database repository (DDR)

6) Update Dbvisit Database configuration (DDC) file

7) Create Standby Database (and template)

8) Synchronize Standby Database

9) Uninstall Dbvisit Database repository (DDR)

E) Exit



Dbvisit Standby

How to setup?


The following Oracle database(s) have been found on this server:

SID ORACLE_HOME

=== ===========

1) rdbms11203 /u00/app/oracle/product/11.2.0/db_3_0

2) MERLIN /u00/app/oracle/product/11.2.0/db_3_0

3) Enter own ORACLE_SID and ORACLE_HOME

Please enter choice : 2

...

Account that will run Dbvisit is [oracle]:

=>Account owner will be: oracle

...



Dbvisit Standby

How to setup?


The following methods have been found on this server:

1) /usr/bin/ssh

2) /usr/bin/rsh

3) Enter own method

Please enter choice [1] : 1

...

The following methods have been found on this server:

1) /usr/bin/scp

2) /usr/bin/rcp

3) /usr/bin/rsync

4) Enter own method

Please enter choice [1] : 1

...


Configure Dbvisit Standby, Archive log Management Module (AMM)

Dbvisit Standby

How to setup?


Should Dbvisit Archive Log Management Module be used on primary

server? [Yes]: No

=>Dbvisit Archive Log Management Module on primary server will used:

No

...

Should Dbvisit Archive Log Management Module be used on standby

server? [Yes]:

=>Dbvisit Archive Log Management Module on standby server will used:

Yes

...

Number of days to keep log files on disk is [7]: 7

=>Number of days to keep log files on disk will be: 7

Number of log files to keep on disk is [0]:

=>Number of log files to keep on disk will be: 0

...


Configure Dbvisit Standby DDR

Dbvisit Standby

How to setup?


Please select the default tablespace to install the Dbvisit Database

repository (DDR).

The following tablespaces are available:

Tablespace

===========

1) USERS

2) CORRUPTED

3) Refresh list


Refreshing list....


Configure Dbvisit Standby DDR

Dbvisit Standby

How to setup?


The following tablespaces are available:

Tablespace

===========

1) USERS

2) CORRUPTED

3) DBVISIT

4) Refresh list


The default tablespace will be: DBVISIT



Dbvisit Standby

How to setup?


Dbvisit will now create the Dbvisit Database repository (DDR).

Continue (Yes) or return to the menu?

<Yes/Return> [Yes]:

User dbvisit created.

Grants to user dbvisit completed.

Dbvisit Database repository (DDR) for dbvisit created.

...

=========================================================

Dbvisit configuration completed.

...

Next steps:

Create standby database using option in main menu:

7) Create Standby Database

=========================================================

Please press <Enter> to return to main menu...


Summary of the configuration

ORATAB location, database concerned?

Where to store the Dbvisit database archive log?

Connection, transfer, compression?

Where to store log files?

Primary and standby server information

Monitoring

Archive log management module (AMM)

DDR information

Review and modifications are possible at any time

Dbvisit Standby

How to setup?


6) Update Dbvisit Database configuration (DDC) file



Dbvisit Standby

How to setup?






Create Standby database

Dbvisit Standby

How to setup?


Is this the primary server? <Yes/No> [Yes]:

=========================================================

Dbvisit Standby Database Technology (6.0.34.9322)

http://www.dbvisit.com

...

Options:

1) New Dbvisit Database setup (combines options 2,3,4)

...

7) Create Standby Database (and template)


9) Uninstall Dbvisit Database repository (DDR)

E) Exit

=========================================================




Dbvisit Standby

How to setup?


=>Creating Standby Database.

Primary database will NOT be shutdown.

Choose database:

The following Oracle database(s) have a Dbvisit Database

configuration (DDC)

file on this server:

DDC

===

1) MERLIN

2) Return to menu


Is this correct? <Yes/No> [Yes]:

Database MERLIN is up.


Summary of the standby database creation

Select a configured database

Dbvisit Standby starts to transfer the Dbvisit DDC

Installation health check on the standby server

Standby database init parameter configuration

Standby database creation method (backup, compression)

1. direct transfer

2. using a temporary location

3. using a portable medium

Possibility to save the setup as template

Dbvisit Standby

How to setup?




Dbvisit Standby

How to setup?


Restoring standby control files... Standby control files restored.

Starting Standby Database MERLIN...Standby Database MERLIN started.

Standby database MERLIN on vmdbvtest2 mounted.

Performing Oracle Checkpoint.

Waiting 3 seconds for log switch completion...

Standby database created.

To complete creating standby database, run dbvisit on the primary

server, then on the standby, to ensure the standby database is in

sync with primary.

Please press <Enter> to continue...

=========================================================

Standby Database creation on vmdbvtest2 completed.


Manage application access

OS dependent (Management of virtual IP)

Linux

Pacemaker – Corosync

Microsoft

Microsoft Cluster

Requires quorum through shared disks

Included in Datacenter edition

Do not configure automatic switchover

Switchover/failover shall be managed by the administrator depending on the database role

dbi services recommend the use of a Virtual IP (keep alive problematic)

Dbvisit Standby

How to setup?



Agenda Agenda

Dbvisit Standby

Agenda


ii. Architecture

iii. How to setup?




Synchronize the standby database

Runs on primary database to transfer files

Runs on standby server to apply transferred logs

Command: dbvisit <DDC>

Shall be scheduled in oracle’s crontab

Recommended frequency: 10 min.

Mail sent in case of synchronization failure

Success mail may be sent according configuration

Parameters: SUCCESSMAIL & SUCCESSMAIL_DR

Dbvisit Standby

Operate Dbvisit Standby


*/7 * * * * /u00/app/dbvisit/standby-6.0.34/standby/dbvisit MERLIN



Dbvisit Standby



[oracle@vmdbvtest1 standby]$ ./dbvisit MERLIN

=======================================================

...

Log file(s) for MERLIN will be transferred from vmdbvtest1 to

vmdbvtest2...

Transferring o1_mf_1_47_83nnnfbv_.arc to host

vmdbvtest2:o1_mf_1_47_83nnnfbv_.arc

201208262005 - 1 Log transfer to vmdbvtest2 for MERLIN completed.

Last sequence was 47.

=======================================================

dbvisit ended on vmdbvtest1: Sun Aug 26 20:05:35 2012

=======================================================



Dbvisit Standby




...

Log file(s) for MERLIN from vmdbvtest1 will be applied to

vmdbvtest2...

...

201208262008 - Log seq 47 thread 1 applied to standby database

MERLIN.

Dbvisit Archive Management Module (AMM)

(Number to keep: 0) (Days to keep: 7) (Diskspace full threshold: 85%)

...

/u00/app/oracle/admin/MERLIN/dbvisit_arc

Total number of archive files : 1

Number of files deleted : 0

Current Disk percent full : 14%

...


Monitoring

Daily heartbeat

default in DDC configuration: 07:00 am

Status mail

Mail status

Command dbvisit –i <DDC>

To be run on primary server only

Web interface

One interface per database server

Dbvisit Standby



[oracle@vmdbvtest1 standby]$ ./dbvisit -i MERLIN


Monitoring

Dbvisit Standby




Archivelogs Gap management

Archivelogs can be retransferred to standby server

New feature (dbvisit_setup wizard)

Dbvisit Standby



[oracle@vmdbvtest1 standby]$ ./dbvisit -r 56 MERLIN

...

No Dbvisit Standby configuration differences found between vmdbvtest1

and vmdbvtest2.

...

Transferring o1_mf_1_57_83ntyj3h_.arc to host

vmdbvtest2:o1_mf_1_57_83ntyj3h_.arc

201208262032 - 3 Log transfers to vmdbvtest2 for MERLIN completed.

Last sequence was 57.

...



Dbvisit Standby switchover

Command: dbv_oraStartStop switchover <DDC>

Must be started simultaneously on primary & standby servers

Use a unique key to identify processes between servers

String provided by user

Goes through 18 steps to complete

Synchronization schedules shall be deactivated

Can drive to complete configuration corruption

Pre-requirements

No archivelogs gap between primary and standby database

Run manual synchronization first

Dbvisit Standby




Dbvisit Standby failover

Command: dbv_oraStartStop activate<DDC>

Run on standby server

Pre-requirements

Run manual synchronization first on standby server

Synchronization schedules shall be deactivated

Failover performs

RECOVER until CANCEL

Post-operation

Backup the new primary database

Re-create the standby database

Add a TEMPFILE if required

Dbvisit Standby





Dbvisit Standby




...

No new logs to apply.

...

[oracle@vmdbvtest1 standby]$ ./dbv_oraStartStop activate MERLIN

=============================================================

Dbvisit Standby Database Technology (6.0.34.9307) (pid 6218)

…

Activating means this database will become a Primary Database.

It will no longer be a Standby Database for MERLIN on vmdbvtest2.

Activation cannot be reversed.

=>Activate Standby Database on vmdbvtest1? <Yes/No> [No]: Yes

Are you sure? <Yes/No> [No]: Yes

Activating now...



Dbvisit Standby



Activate Standby Database MERLIN...

Standby Database MERLIN activated.

Shutting down standby Database MERLIN...

Standby Database MERLIN shutdown successfully.

Starting Activated Standby Database MERLIN...

Activated Standby Database MERLIN started .

File dbv_MERLIN.env copied to dbv_MERLIN.env.201208271116.

..

SOURCE=vmdbvtest1 DESTINATION=vmdbvtest2.

Activation complete. Please ensure a backup of this Database is made.

Old archives from before the activation should be removed to avoid

mix-up between new and old archive logs.

..

If the Dbvisit Standby process is to be reversed, then

Database on vmdbvtest2 will need to be rebuilt as a Standby Database.


Comparison

Dbvisit Standby



Dbvisit Standby

Oracle Data Guard

Oracle RAC

Oracle Clusterware

Service Availability

Data Availability

Complexity

Costs Scalability

(Active Guard)


Healthcare: Kantonspital Bruderholz

Oracle Linux, Pacemaker – Corosync (VIP)

Budget cleared

Luxury industry: Hublot Windows Server 2003, Windows Cluster (VIP)

High Availability

Public sector: Kanton Jura - IT IBM AIX, Partial Active-Active cluster (Bull ARF)

Higher availability (data availability)

Dbvisit Standby - Fixed Price Services http://www.dbi-services.com/index.php/products/fixed-price-

services/dbvisit-data-guard-light

Dbvisit Standby

Successful projects


http://www.dbi-services.com/index.php/products/fixed-price-services/dbvisit-data-guard-light















Dbvisit Standby test drive @AWS

Dvisit Standby

Amazon cloud



dbi services

Any Questions? Please Do Ask!


„We look forward to working with you!“

Jérôme Witt

Consultant

Oracle Certified Professional 11g

Yann Neuhaus

Principal Consultant

Region Manager - CEO

Dias nummer 1 - DOAG

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