Wednesday May 21, 2014

Zero Downtime Consolidation to Oracle Database 12c: Webcast Recap

As companies move to private cloud implementations to increase agility and reduce costs, and start their plans with consolidating their databases, a major question arises: how do we move our systems without causing major disruption to the business. At the end, the most important systems that need to move to this new architecture are the ones that cannot tolerate extensive downtime for any reason. In last week’s webcast “Zero Downtime Consolidation to Oracle Database 12c with Oracle GoldenGate 12c” we tackled this specific dilemma that IT organizations face. The webcast is now available on demand via the link above in case you missed it last week.

In the webcast, we started discussing the benefits companies achieve when they consolidate to a private database cloud, critical database capabilities to deliver database as a service, and a quick overview Oracle Database 12c features that enable private database clouds deployments. Nick Wagner, director of product management for Oracle Database High Availability, talked about the new Global Data Services feature in Oracle Database Maximum Availability Architecture (MAA) as well. Global Data Services helps organizations to handle challenges involved with managing multiple database replicas across different sites. The product manages database replicas of Active Data Guard and Oracle GoldenGate products, and offers workload balancing to maximize performance as well as intelligent handling of outages using all available replicas. Nick also discussed the database features available for upgrading, migrating, and consolidating into Oracle Database 12c and when it makes sense to use Oracle GoldenGate for these efforts.

After Nick, Chai Pydimukkala from senior director of product management for GoldenGate discussed some of the key new features of Oracle GoldenGate 12c for Oracle Database and its expanding heterogeneity that supports consolidation from all major databases. Chai continued his presentation with GoldenGate’s solution architecture for zero downtime consolidation and explained how it minimizes risk with failback option as well as via the phased migration option by running old and new environments concurrently.

Chai also gave an example on how Oracle Active Data Guard customers can seamlessly use GoldenGate for a zero downtime migration without affecting their standby system for high ongoing high availability and disaster recoery. After customer examples we had a long Q&A section. For the full presentation and Q&A with the experts you can watch the on-demand version of the webcast via the following link.

Zero Downtime Consolidation to Oracle Database 12c with Oracle GoldenGate 12c

In the rest of this blog post, I provided  answers to some of the questions we could not take in the live event. 

1) Additional difference in features between GoldenGate 11g and 12c?

Please take a look at our previous blog posts below where we discussed many of the new features of GoldenGate 12c.

· Advanced Replication for The Masses – Oracle GoldenGate 12c for the Oracle Database.

· GoldenGate 12c - What is Coordinated Delivery?

· GoldenGate 12c - Coordinated Delivery Example

· Oracle GoldenGate 12c - Announcing Support for Microsoft and IBM

You can also listen to our podcast: Unveiling Oracle GoldenGate 12c

More comprehensive information can be found in the webcast replay  Introducing Oracle GoldenGate 12c: Extreme Performance Simplified or GoldenGate 12c resource kit.

2) Does GoldenGate have a term license that customer can purchase for migration purposes?

We do offer 1 year license that customer can be used for this purposes.

3) Is there a Oracle Tutorial on configuring and testing Zero downtime upgrade using GoldenGate?

Here is a high level outline/tutorial for the migration. It will require some knowledge of how to setup GoldenGate and configuration.

Oracle GoldenGate Best Practice: Oracle Migrations and Upgrades 9i and up

A more broad discussion of this topic can be found in the following white paper. Zero Downtime Database Upgrades using Oracle GoldenGate 12c

4) If the number of updates to the database is very high, does GoldenGate give some kind of compression to transfer the Trail Files and be up to date with the changes?

Oracle GoldenGate does provide support of compress of change data in the Trail File to better the transfer throughput from source to target with the usage of COMPRESS and COMPRESSTHRESHOLD. 

RMTHOST

{host_name | IP_address}

{, MGRPORT port | PORT port}

[, COMPRESS]

[, COMPRESSTHRESHOLD]

[, ENCRYPT algorithm [KEYNAME key_name]]

[, PARAMS collector_parameters]

[, STREAMING | NOSTREAMING]

[, TCPBUFSIZE bytes]

[, TCPFLUSHBYTES bytes]

[, TIMEOUT seconds]

COMPRESS

This option is valid for online or batch Capture processes and any Oracle GoldenGate initial-load method that uses Trails. Compresses outgoing blocks of records to reduce bandwidth requirements. Oracle GoldenGate decompresses the data before writing it to the Trail. COMPRESS typically results in compression ratios of at least 4:1 and sometimes better. However, compressing data can consume CPU resources.

COMPRESSTHRESHOLD

This option is valid for online or batch Capture processes and any Oracle GoldenGate initial-load method that uses trails. Sets the minimum block size for which compression is to occur. Valid values are from 0 and through 28000. The default is 1,000 bytes.

5) Can the Source system utilize 12C GoldenGate for DML/DDL capture and target system utilize GoldenGate 11g?

Yes.  You can replicate from a higher version of GoldenGate to a lower version using FORMAT RELEASE option. 

FORMAT RELEASE <major>.<minor>

In the on demand replay of the webcast you will find more questions answered by our product management experts. So make sure to watch the on demand webcast as well.

Tuesday May 06, 2014

No Way Out, But to Consolidate

IT teams receive pressures on multiple fronts: Business groups demand new application services delivered faster and continuous, high-quality IT service to support highly dynamic and competitive business operations. In the meanwhile IT teams are asked to reduce costs and improve ROI from existing systems in highly complex and siloed environments.

In the midst of this conundrum, the only way out for IT leadership is to consolidate and leverage cloud architecture. Especially consolidation at the database level and implementing a private database-as-a-service (DBaaS) environment is a transformative approach to delivering database functionality to end users in an agile, efficient, and scalable way.  It helps organizations improve resource utilization, and lower both capital and operational expenditures.

Oracle Database 12c is designed to support database consolidation with many new features for deploying shared database environment. The new multitenant architecture, simplified management capabilities, improvements to security and compliance, along with robust and flexible Maximum Availability Architecture, are only a few of the key differentiators.

While this all sounds good and logical for IT teams, when it comes to moving to a private database cloud, they face yet another major challenge: How do we move our critical systems to a new environment without interrupting our operations. In today’s 24/7 world, especially customer-facing systems cannot tolerate hours or days of downtime. For some of them, even few minutes of downtime can bring high costs to the business. As in each major project, risk involved with moving to a new system is a real deterrent factor too.

Oracle GoldenGate 12c offers the core capabilities to enable this major move to a database as a service environment. With its optimized support for Oracle Database 12c multitenant architecture and heterogeneous data replication capabilities, Oracle GoldenGate allows organizations to avoid business disruption while the systems are moving to a consolidated, DBaaS environment. In addition, Oracle GoldenGate offers a failback option to the old environment, or a phased migration option by running old and new systems simultaneously in active-active mode, to minimize risks. Oracle GoldenGate’s heterogeneity includes all major database vendors and operating systems including SQL Server, DB2 (LUW, z/Os, iSeries), Sybase ASE, HP NonStop and more. 

In our webcast Zero Downtime Consolidation to Oracle Database 12c with Oracle GoldenGate 12c on May 13th 10am PT we will present this solution with specific architecture examples and comparison to other database upgrade options.

Zero Downtime Consolidation to Oracle Database 12c with Oracle GoldenGate 12c

May 13th, 10am PT/ 1pm ET

If your organization needs to improve agility, increase innovation, and reduce costs, I invite you to join this webcast to learn how to remove the risk and business interruption barriers to move to an agile and cost-efficient private database cloud.

Wednesday Mar 27, 2013

On Premise and Cloud

Follow-on blog about five key data integration requirements topic, which focuses on data integration for cloud architectures. 

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