One of our customers decided to modernize their Oracle database to Microsoft SQL Server. However, the thousands of SAP Crystal Reports connected to their existing Oracle database prese...
WHY MIGRATE ORACLE TO SQL SERVER?
Many Oracle customers are concerned about being locked into a single vendor with high licensing costs, a fear that is often realized when it comes time to upgrade or modernize their environment.
Using Microsoft SQL Server, DB Best can help Oracle customers achieve the performance, scale, and security that their applications require while keeping costs under control.
Microsoft SQL Server reduces costs by consolidating databases, virtualizing servers, compressing data, allocating resources more effectively, and managing policies. Utilizing SQL Server’s self-service business intelligence capabilities and the ability for end-users to create their own ad-hoc reporting, organizations can reduce their dependency on IT.
Typical challenges we see
Checking the database performance after migration
Prior to the migration, you should have a good understanding of your database workload including any key performance metrics and frequency of peak loads. The key to a proper comparison is a mechanism to replay a workload. You can achieve this through the SQL Server Distributed Replay feature or your own load harness.
Once under load, you can evaluate your new technology by monitoring pressure on CPU, Memory, IO Operations, and network traffic.
By monitoring when the system is under pressure you can determine if your technology is properly sized or if resources need to be adjusted.
DB Best can help you profile your existing environment and then grade your migration against that profile.
Migrating indexes from Oracle to Microsoft SQL Server
At first glance, an index is just another object in the database that needs to be migrated. However, the manner in which data sits in storage is very different between Oracle and SQL Server. DB Best approaches this circumstance by examining the logical layout of the tables and relationships, paying special consideration to the business needs and use cases of the underlying data to determine an appropriate indexing strategy.
One of the major factors to be considered when we migrate Oracle to SQL is licensing. In most cases, a SQL Server Standard edition may suffice. However, there are some key features of Enterprise Edition that should be considered which may have a big impact on the security, availability, manageability, and performance of your workload.
When it comes to scope there is a choice that must be made around how the conversion will proceed. The team will review all the source Oracle Schemas. Each Schema could either be migrated into its own isolated database or converted into a single database with multiple Schemas. We will work with you to consider the required security for isolation needs between the various Schemas.
Specific migration issues
There are several considerations for migrating an Oracle database. In addition to reviewing the Schemas in each Oracle instance, special attention needs to be paid to data type differences and incompatibilities.
For example, Numeric and date/time values are stored at different levels of precision and scale. Moreover, Oracle and Microsoft implement the SQL ANSI standards differently which may return different results.
Testing the converted code
It’s paramount that a QA team that is familiar with business needs and with the data review the code conversions from Oracle to SQL. Moreover, the QA team will need to verify that the converted code returns the expected data in the format and order that the business is accustomed to.
The leader in Oracle to SQL Server migrations
Our DB Best team has developed a unique methodology to migrate Oracle to SQL Server that has been proven many times over with hundreds of positive customer experiences. Being the architect and original creator of SQL Server Migration Assistant (SSMA) for Oracle, the DB Best team is THE database migration expert you can trust with your project.
See how you can get the most out of SSMA from the company who originally created the tool for Microsoft.
Comparing two production databases for migration or an upgrade? Now you can do this with one powerful and simple tool that every DBA and database developer needs.
Our DBMSys platform collects data from multiple environments to develop a business case for modernization and chart an upgrade path while verifying servers conform to best practices.
OraMigratorTM is an intuitive and effective solution for Oracle to SQL Server data migration. The tool transfers data from Oracle tables to existing SQL Server tables in a few easy steps.
Sometimes you need a helping hand to get you started. Here are some of our offers to help with assessments, using SSMA, or developing a future-state roadmap.
Everyone is talking about the need for a digital transformation, but how do you get there? See how our future-state architecture design can use cutting edge technology to meet your organization’s needs.
Trust the team who built the SQL Server Migration Assistant to provide you with SSMA support in migrating your Oracle, SAP ASE, IBM DB2, MySQL, and Microsoft Access databases to SQL Server or Azure SQL Database.
We will guide you through the basics of SQL Server functionality, and show how it's compared with Oracle database applications.
Save up to $1 million by migrating from Oracle to SQL Server
“Low-performing and costly” – these were major characteristics of the Oracle system for one of our customers, a leading US automotive manufacturer. In this regard, it was quite natural for them to consider migration to another database platform. We suggested changing their Oracle Database to Azure SQL Database and also moving their applications to Azure.
According to the calculations made by our experts, the customer is estimated to save 1 million dollars over the next 5 years based just on reduced licensing!
The video below depicts the migration process in details.
Leveraging your existing investments in migration technologies
Data integration tools play a big part in the successful migration of Oracle databases to SQL Server. Ideally, you want to minimize the changes to your data integration processes. We have extensive experience in the following platforms.
Check out our Oracle Golden Gate technology solutions to facilitate real-time data integration, replication, transformations, and verification in heterogeneous IT environments.
Using Informatica solutions we can integrate your data from existing on-premises systems to the cloud, big data, and IoT systems smoothly and cost-effectively. Our solution architects will migrate the data accelerating time to value for your business goals.
Learn how we can integrate your data from existing on-premises systems to the cloud, big data, and IoT systems leveraging IBM Datastage solutions. With our experience, you can to migrate your data really quickly.
Discover how we can help you use Attunity solutions to integrate your data from existing on-premises systems to the cloud, big data, and IoT systems within a short period of time. DB Best can flawlessly replicate your data between different types of databases and handle any data changes.
We offer a fast and cost-effective way to connect. Clean and share cloud and on-premises data using the architecture that easily scales to respond to growing business requests.
Supporting your SQL Server solutions after the migration
As part of our migration project, we offer training, support, consulting, and managed services for your SQL Server solutions. If you don’t want to go through the hassle of maintaining the day-to-day operations of your databases and applications, be sure to check out our Operational Data Management service.
Are your DBA's stretched thin? Offload your IT needs to a dedicated team with industry-proven processes and world-leading tools and products.
Check out the database consulting services we have used to help customers like you get the most out of their database platform.
Our DevOps services introduce cultural changes, best practices, and new technologies to improve collaboration between business, development, and operations to create an agile application development lifecycle.
We have a great set of blog posts and data sheets to help you better understand our capabilities as the leader in database migration services. Explore your possibilities and experience our expertise in moving Oracle workloads to Microsoft SQL Server technologies.
‘Low-performing and costly’ - these were major characteristics of the Oracle system of one of our customers, a leading US automotive corporations. In this regard, it was quite natu...
When talking about migration from Oracle to SQL Server, we always look for ways to work with our customers to keep costs under control. We recently completed an Oracle to SQL Server mi...
One of the world’s largest information technology companies decided to migrate their Oracle database to SQL Server. They leveraged SQL Server Migration Assistant (SSMA) for Oracle to...
One of the largest transportation companies in the United States needed to migrate their Oracle-based application to SQL Server platform. The customer’s application code had high que...
One of the leading US healthcare organizations needed to upgrade their health record system in an effort to drive down costs while enabling new capabilities. We replaced the customer's...
One of the largest US educational organizations has been running their data handling system in Oracle environment. They wished to reduce maintenance costs due to expensive Oracle licen...
Reference data sheet
Reference white paper
This white paper explores challenges that arise when you migrate from an Oracle 7.3 database or later to SQL Server 2014. It describes the implementation differences of database objec...