Saturday Jun 30, 2012

IBM DB2 AIX RISC to Oracle Linux Sun x86

Mentioned RISC to x86 migrations a couple blogs ago and now there is a new white paper out by Oracle on just this topic. The white paper goes into detail on the Oracle Linux and Database installation. It also shows how to use the free Oracle SQL Developer tool to migrate the data:
Migrating from IBM DB2 AIX to Oracle Linux Sun x86

Friday Jun 29, 2012

Amazon CloudFormations and Oracle Virtual Assembly Builder

Yesterday I blogged about AWS AMIs and Oracle VM templates. These are great mechanisms to stand up an initial cloud environment. However, they don't provide the capability to manage, provision and update an environment once it is up and running. This is where AWS Cloud Formations and Oracle Virtual Assembly Builder comes into play. In a way, these tools/frameworks pick up where AMIs and VM templates leave off.
Once again, there a similar offers from AWS and Oracle that compliant and also overlap with each other. Let's start by looking at the definitions:
AWS CloudFormation gives developers and systems administrators an easy way to create and manage a collection of related AWS resources, provisioning and updating them in an orderly and predictable fashion.
AWS CloudFormations

Oracle Virtual Assembly Builder - Oracle Virtual Assembly Builder makes it possible for administrators to quickly configure and provision entire multi-tier enterprise applications onto virtualized and cloud environments.
Oracle VM Builder

As with the discussion around should you use AMI or VM Templates, there are pros and cons to each:
1. CloudFormation is JSON, Assembly Builder is GUI and CLI
2. VM Templates can be used in any private or public cloud environment. Of course, CloudFormations is tied to AWS public cloud

Thursday Jun 28, 2012

Amazon AMIs and Oracle VM templates

I have worked with Oracle VM templates and most recently with Amazon Machine Images (AMI). The similarities in the functionality and capabilities they provide are striking. Just take a look a the definitions:

An Amazon Machine Image (AMI) is a special type of pre-configured operating system and virtual application software which is used to create a virtual machine within the Amazon Elastic Compute Cloud (EC2). It serves as the basic unit of deployment for services delivered using EC2. AWS AMIs

Oracle VM Templates provide an innovative approach to deploying a fully configured software stack by offering pre-installed and pre-configured software images. Use of Oracle VM Templates eliminates the installation and configuration costs, and reduces the ongoing maintenance costs helping organizations achieve faster time to market and lower cost of operations. Oracle VM Templates

Other things they have in common:
1. Both have 35 Oracle images or templates:
AWS AMI pre-built images Oracle pre-built VM Templates
2. Both allow to build your own images or templates: A. OVM template builder - OVM Template Builder - Oracle VM Template Builder, an open source, graphical utility that makes it easy to use Oracle Enterprise Linux “Just enough OS” (JeOS)–based scripts for developing pre-packaged virtual machines for Oracle VM.
B. AMI 'builder' - AMI builder
However, AWS has the added feature/benefit of adding your own AMI to the AWS AMI catalog: AMI - Adding to the AWS AMI catalog

Another plus with AWS and AMI is there are hundreds of MySQL AMIs (AWS MySQL AMIs ). A benefit of Oracle VM templates is they can run on any public or private cloud environment, not just AWS EC2.
However, with Oracle VM templates they first need to be images as AMIs before they can run in the AWS cloud.

Tuesday Jun 26, 2012

Migrating RISC to x86 - endianess 'issue'

Endianess always comes up when migrating applications and databases from RISC to x86. The issue is often time overblown as if you are running on a relational database the database vendor will provide tools or automated methods to convert the data properly. Oracle RMAN is often the first choice. Oracle imp/exp, data pump, and GoldenGate can also be used.

A bigger issue would be applications that access OS files. These OS files will need to be converted from big endian (RISC) to little endian (CISC) and then the application may be impacted because of the endianess differences.

Monday Jun 25, 2012

Oracle Database on EC2 Cloud white paper link

Some very good information on running Oracle on AWS EC2:
AWS web site regarding Oracle

However, this link is broken: Getting started with Oracle on AWS link broken
Very good FAQ on OTN:
Oracle on AWS FAQ

Friday Jun 22, 2012

Progress 4GL and DB to Oracle and cloud

Getting from client/server based 4GLs and databases where the 4GL is tightly linked to the database to Oracle and the cloud is not easy. The least risky and expensive option (in the short term) is to use the Progress OpenEdge DataServer for Oracle:
Progress OpenEdge DataServer
This eliminates the need to have to migrate the Progress 4GL to Java/J2EE.
The database can be migrated using SQLWays Ispirer:
Ispirer SQLWays ProgressDB migrations tool

The Progress 4GL can remain as is. In order to get the application on the cloud there are a few approaches:
1. VDI - Virtual Desktop is a way to put all of the users desktop in a centralized environment off the desktop. This is great in cases where it is just not one client/server application that the user needs access too. In many cases, users will utilize MS Access, MS Excel, Crystal Reports and other tools to get at the Progress DB and other centralized databases. Vmware's acquistion of Wanova shows how VDI is growing in usage. Citrix is the 800 pound gorilla in the VDI space with Citrix WinFrame (now called XenDesktop). Oracle offers a VDI solution that Oracle picked up when it acquired Sun.
2. Hypervisor Server Virtualization - Of course you can place applications written in client/server languages like Progress 4GL buy using server virtualization from Oracle, VMWare, Microsoft, Citrix and others.
3. Microsoft Remote Desktop Services (aka: Terminal Services Client)
The entire idea is to eliminate all the client/server desktop devices and connections which require desktop software and database drivers. A solution to removing database drivers from the desktop is to use DataDirect SQLLink

Wednesday Jun 20, 2012

CloudCruiser Chargeback in the cloud

Another company that does chargeback has just been pointed out to me:
CloudCruiser
There is interesting quote on this company's web site:
"Accurate and transparent chargeback is a key requirement in this age of cloud computing. By 2015, we forecast more than 50% of the Global 2000 will charge back most IT costs using service-based pricing, up from less than 10% today. New integrated tools will be needed to implement IT service-based chargeback."

- Jay Pultz, Vice President and Distinguished Analyst, Gartner

Monday Jun 18, 2012

Mainframe modernization - Getting it to work

Interesting read on a very old (1950s) Medicaid system that the State of NC is struggling to modernize. The new language for the modern system is COBOL. This is causing some 'heads to turn':
State of NC modernization to COBOL

Thursday Jun 14, 2012

Chargeback and billing across public and private clouds

Had a great conversation today regarding the need for metering, chargeback, and billing of cloud computing resources. The person I spoken with at a Fortune 1000 company increased the scope and magnitude of the issue of billing for cloud computing resources beyond what I had previously considered. I believed that doing any type of chargeback and billing for one public, private or hybrid installation was difficult. This person pointed out that the problem is even bigger in scope. The reality is many companies are using multiple public cloud vendors and have many different private cloud data centers. A customer may use AWS for some smaller public cloud applications, Salesforce.com (SaaS), Rackspace for IaaS, Savvis for colocation and a variety of Iaas and PaaS implementations for the private cloud. How does a company get a consolidated bill for all these different cloud environments? I am not sure their is an answer right now.

Wednesday Jun 13, 2012

Migrating C/C++ embedded SQL code

When moving from Sybase C Embedded SQL to Oracle C Embedded SQL, there are no tools are process. Since Embedded SQL is a standard it should be pretty straight forward. The biggest challenge is going to be SQL that is Sybase specific. I would map the process out as follows:
1. Change include files from Sybase Embedded SQL libraries to Oracle Pro*C in each module.
2. Make sure the C code does not test for Sybase specific error messages. Fix where needed.
3. Run all modules through the Pro*C pre-compiler. Fix any embedded static SQL that does not make it through the pre-compiler using the SQL Developer scratch pad editor.
4. Compile using C compiler.
5. Test run the application fixing any dynamic SQL that does not work against Oracle using SQL Developer scratch pad editor.
SQL Developer can be downloaded here:

SaaS usage billing software

Just found out about this SaaS billing company that can be used for software usage billing in the cloud:
Metratech Metanga

Monday Jun 11, 2012

Unidata and RDB migrations to Oracle

Have a couple of unique migrations that don't come along to often. They are Unidata and RDB migrations. The top three things that make these migration more challenging are:
1. No automated data migration tools - Because these migration don't happen that often, there are no tools in the market place to automated the data migration.
2. Application is tied to database - The application needs to be re-architected/re-engineered. Unidata Basic and COBOL for RDB. TSRI can migrate Basic to Java and PL/SQL. Transoft can migrate DEC COBOL to Java.
3. New client hardware potentially involved - Many Unidata and RDB based systems use 'green screens' as the front end. These are character based screens that will run on very old dumb terminals such as: Wyse and DEC 5250 terminals. The user interface can be replicated in a web browser but many times these old terminals do not support web browsers.

Thursday Jun 07, 2012

AWS EC2 Oracle RDB connection to Oracle Database Instance

Provisioning my Oracle database instance to AWS EC2 RDB was easy. Just a few clicks! However, getting my connection to my Oracle cloud database was not as easy. A couple things that are not obvious (using Oracle SQL Developer):
1. Need to set up a database security group.
2. Need to use end point for the host name.
This video is the best one on the internet to explain both points:
Youtube video on Oracle AWS RDB

Oracle Cloud offering - What makes it unique ?

Three things that make Oracle cloud offering unique:
1. SaaS, PaaS and IaaS offerings
2. Private and Public cloud offerings
3. Ability to seamlessly move between private and public cloud

Advantages of relational databases over VSAM, ISAM and hierarchical data stores

When migrating companies from legacy environments to the cloud, invariably you run into older hierarchical, flat file, VSAM, ISAM and other legacy data stores. There are many advantages to moving these databases into a relational database structure. The most important which is that most cloud providers run on relational database models. AWS, for example, supports Oracle, SQL Server, and MySQL. The top three 'other reasons' for moving to a relational database are:
1. Data Access – Thousands of database access tools from query creation to business intelligence.
2. Management and monitoring – Hundreds of tools for management and monitoring of the database.
3. Leverage all the free tools from relational database vendors. Free Oracle database tools include:
-Application Express – WYSIWIG browse based application development and deployment.
-SQL Developer – SQL and PL/SQL development. Database object maintenance.
Adding number four based upon feedback:
4. Data quality, integrity, referential integrity and even business logic is embedded in the database.
What is interesting is that Big Data NoSQL databases and XML databases are taking us back to the days of VSAM (key value databases) with NoSQL and IMS (hierarchical) with XML databases?
About

Migrating legacy client/server and mainframe technologies to the Oracle cloud.

Search

Categories
Archives
« June 2012 »
SunMonTueWedThuFriSat
     
1
2
3
4
5
6
8
9
10
12
15
16
17
19
21
23
24
27
       
Today