Tuesday, July 17, 2018

Migrating Data from Oracle to SQL Server

We were indulged in an another challenge during our cover of Azure. We had used the App Service (A platform as service) to host our Apps and Database, then we used the Logic Apps to automate process now we are laid with another challenge of  migrating our archive data, from an Obsolete Oracle 9i to the cloud.

Challenges
  1. Database was more than 12Gigs and had Big Tables (Some went to extent of having more than 10 million records)
  2. Ensure what Source had is what the destination got
  3. Network interruptions

What did we use

Microsoft came to assist us and they offered us to use the SQL Server Migration Assistant 7.8 for this task.

Observation

Although its not a successful task, but we were able to fix issues manually and migrated the data. Manual task went to the extent of even removing constraints, then resolve the issue and finally recreate them. This issue did haunt us the most. For integrity we had to ensure the Row count is equal in Source and Destination.



1 comment:

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