Tuesday May 01, 2012

What makes a DB2 migration easy ?

The four key elements are:
1. COTS application - This means no application database access or database schema to migrate (assuming no database customizations)
2. No integration interfaces - There are no web service, FTP/file, COTS API or other input, output or input/output interfaces.
3. No ETL / batch processing - The is no batch processing or ETL jobs (Oracle Data Integrator, Informatica, IBM DataStage etc.) that are outside the COTS application.
4. No data to migrate - Really ? Yes, all the data is transient. It is part of a print server, real time data capture or caching system.
This may seem like it does not happen. However, I just encountered a set of applications run by a major corporation that has all four elements!

Wednesday Sep 07, 2011

Cloud 2.0 migrations versus Cloud 1.0 migrations

In the early 1960s when companies started migrating to the Cloud 1.0 (mainframe-based cloud), existing computerized systems to migrate from did not exist. The manual systems, that sometimes the computerized application replaced, were rudimentary and easily replaced by a computer-based system. This made moving to Cloud 1.0 much easier than Cloud 2.0 migrations as you where implementing a new system clear of any legacy ‘baggage’. Today, companies are shackled with hundreds of business applications based upon mainframes, mid-range, and client/server systems deployed using mostly custom developed applications or Commercial Off-The-Self (COTS) products. Migrating existing IT systems to the Cloud 2.0 involves migrating everything from the data to the application, application deployment solutions or procedures, management and monitoring software, integration, data warehouse, business intelligence, replications solutions and backup and recovery, and perhaps even hardware infrastructure.
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Migrating legacy client/server and mainframe technologies to the Oracle cloud.

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