abcloudz

Press Release: ABCloudz's Oracle Workload Migration Solution Now Available in the Microsoft Azure Marketplace

Microsoft Azure customers worldwide now gain access to ABCloudz’s Oracle Workload Migration services to take advantage of the scalability, reliability, and agility of Azure to drive application development and shape business strategies. ABCloudz, a global leader in data migration and modernization, today announced the availability of its Oracle Workload Migration offerings in the Microsoft Azure […]
Adam Robertson

Analyzing Migration Project Efforts and Crafting the Project Plan — Part 3

Welcome to the third blog post in the overview series dedicated to our 12-step Migration and Modernization Methodology that was adopted by AWS. In our first and second blog posts, we explored the critical role of defining workloads in migration projects and laid out the process of capturing the current architecture and designing the future […]
Adam Robertson

Database migration with SSMA: Handling typical conversion issues

Migrating databases from Oracle to Microsoft SQL Server can be a complex endeavor, especially when it comes to dealing with differences in schema structures, data types, and specific SQL clauses. The SQL Server Migration Assistant (SSMA) is a robust tool designed to automate these migrations and minimize manual effort. However, SSMA might not always produce […]
Oleksii Svitlychnyi

Expand capacity with an IBM DB2 SQL Azure SQL Database migration

One of the world’s largest distributors of non-food consumable products wanted to rationalize their data platform and business intelligence strategy. Their current IBM DB2 database system lacked a repository to host historical audit-related data, so they could hardly retrieve data from past years. Then we came up with an Azure cloud database solution that could […]
Andrii Koval

Quick and easy automatic approach to database conversion

One of the largest educational organizations in the United States had been running their data handling system in the Oracle environment. They wanted to reduce maintenance costs due to the expensive Oracle licensing model, which includes an additional fee for the partitioning feature. The ABCloudz team provided a solution for migrating the customer’s database to […]
Andrey Khudyakov, Roman Muzyka

Conversion of Oracle schemas with hierarchical queries to SQL Server

One of our clients, prominent information technology company, needed to migrate its Oracle database to SQL Server so they called ABCloudz. They knew they wanted to automate the major part of the migration with SQL Server Migration Assistant (SSMA) but there were some challenges associated with this process. First, the company’s source database code contained […]
Andrey Khudyakov (DB architect), Roman Muzyka (writer)

Oracle to SQL Server migration with SSMA: Converting materialized view with float type

A materialized view is an important property of Oracle. SQL Server recreates the same behavior as this materialized view in several ways. Unfortunately, SSMA may have issues with converting this object to SQL Server. It flags certain conditions as an error. In this blog post, we will overview the error O2SS0522. It goes about cases in […]
Andrey Khudyakov

Database migration with SSMA: Handling typical conversion errors

ABCloudz tech experts possess outstanding experience in migrating databases. For this purpose, we frequently use SQL Server Migration Assistant (SSMA). SSMA utilization may cause various types of errors, so we have created a blog post series which focused on typical database conversion errors. Each post in this series is dedicated to a separate problem statement and […]
Andrey Khudyakov, Roman Muzyka

Oracle to SQL Server migration with SSMA: Converting interval literals

Oracle enables you to use specific interval literals for indicating a certain period of time. Unfortunately, there is no direct analog for such literals in SQL Server. As a result, when you apply SQL Server Migration Assistant (SSMA) for converting Oracle code with interval literals, you receive an error O2SS0086. The term ‘interval literals’ refers to a fixed data value, […]
Andrey Khudyakov, Roman Muzyka

Oracle to SQL Server migration with SSMA: Converting unsupported table expressions

With Oracle table functions, you can define a set of PL/SQL statements in such a way that, when queried, should behave just as a regular query to the table. The table function enables you to manipulate individual collection elements (user-defined object types) in your SQL database code. However, this may create a database migration challenge […]
Andrey Khudyakov (DB architect), Roman Muzyka (writer)

Oracle to SQL Server migration with SSMA: Converting foreign keys with different types of columns and referenced columns

In Oracle, you can create a foreign key for a table using columns with various data types. Unfortunately, SQL Server Migration Assistant (SSMA) fails to convert them to SQL Server correctly since it does not support such elements. As a result, when you try to convert the Oracle code including the foreign key with the columns of different data types, you will see the […]
Andrey Khudyakov (DB architect), Roman Muzyka (writer)

Oracle to SQL Server migration with SSMA: Converting unparsed SQL — Pivot Operator

The pivot clause is an integral part of the Oracle database. In particular, the pivot_clause of the SELECT statement allows you to write crosstabulation queries. Here you can rotate rows into columns and aggregate data in the rotation process. As an important data warehousing element, pivot rotates a table-value expression. To be more specific, it turns the […]
Andrey Khudyakov (DB architect), Roman Muzyka (writer)

Oracle to SQL Server migration with SSMA: Converting database links

In Oracle, database links are important features that enable you to access objects on another database. SQL Server has a direct alternative to this function. It provides a linked server or an OPENQUERY feature that allows you to emulate the database links’ functionality. Unfortunately, SQL Server Migration Assistant (SSMA) fails to convert these links automatically. […]
Andrey Khudyakov, Roman Muzyka

Cost-efficient Oracle database migration project with SQL Server Linked Servers

Preventing clients from overspending is one of our top priorities. Hence, we pay close attention to the cost of Oracle to SQL server migration in order to provide the most economical solutions while keeping the highest level of quality. Over years, we have served many clients and helped them to keep costs under control. For […]
Viacheslav Kim (DevOps lead), Roman Muzyka (writer)

Oracle to SQL Server migration with SSMA: Converting interval expressions

Oracle databases have many specific functions and features. For example, it stores a period of time with specific interval expressions. This may cause issues during the database migration from Oracle to SQL Server. When you use SQL Server Migration Assistant (SSMA) for converting Oracle with interval expressions, you will observe the O2SS0006 error message. This may happen because that SSMA does not […]
Andrey Khudyakov, Roman Muzyka
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