ODI in the hybrid database world – Oracle Autonomous Database


Hi all, today I’ll start a series of four post related to the ODI position in a hybrid database world. Everybody knows for quite some time that the cloud is the future. Some companies may delay its adoption, but it will eventually happen in a way or another. However, this adoption will probably not be all at once. Companies, especially the ones that have a large investment on-premises, will need to live in a hybrid mode until things get migrated, built, adapted. And this takes time, a lot of time.

Also, people often start thinking about migrating to the cloud by either:

  • Massively migrating the existing database/data to the cloud, which may sound very promising in the paper, but generally fails miserably when trying to implement, simply because cloud and on-premises are not the same thing (even if the marketing guys tells your boss that its all the same and the migration is a piece of cake).
  • Starting from scratch, which is great for new projects, but most people already have invested and need their on-premises architecture and don’t want to redo all the existing stuff again.

The truth is that companies will end up building something hybrid: whatever is new will be developed thinking on the cloud already but whatever already exists will be integrated (not migrated) into the cloud by stages, until up to some point that the old process either gets converted completely or gets replaced by something else new on the cloud.

For those that had ODI as their ETL tool on-premises, they will find it easy to integrate things to the cloud using whatever they have today. This is because ODI is great to incorporate technologies that does not come out of the box in an easily matter. For this series of four posts, I’ll be talking about the following:

  • Integrating with Oracle Autonomous Database
  • Integrating with Snowflake JDBC
  • Integrating with Snowflake – Files/Stages and SnowSQL
  • Integrating with Google Big Query

For this first post, let’s start with “Integrating with Oracle Autonomous Database” just because its extremally easy to do. Let’s imagine the scenario. You already have a large ETL architecture on-premises and your company started to use Oracle Autonomous Database as their cloud solution. Instead of migrating all at once, they will do it by stages, leveraging everything that they already have build and pushing only essential data to the cloud. Since its a hybrid approach, maybe they even want to get data from the cloud to the on-premises database, to support some existing application.

First thing to do in ODI is to create a new Data Server in the Oracle Technology:

Add the user and password that will be used to connect. Now, instead of adding the JDBC details, as we usually would do, click on “Use Credential File”:

You will need to point to the file that has the connection to your cloud DB. To get this, go to your Oracle DB instance in the cloud, click on DB Connection and download the wallet file.

Add a password to it:

Save the Zip file and go to ODI. On Credential File select the zip file that you just downloaded. If the file is correct, you will be able to select the Connection Details below:

And its done. If you go to JDBC URL, you will see that ODI automatically populate all the info for you:

Click Test Connection to make sure all is correct, and you are good to go:

From this point on, since its Oracle, its all the same. You may do whatever you want with this database because its Oracle. The only difference is that is located somewhere in the cloud and not on-premises. One thing to notice though, is that, since its on the cloud, it will have network constraints. Data volumes will take time depending on several factors that are beyond this post and depends on each companies’ architecture. But the main thing is that you may create ODI mappings and procedures, and push/get data to/from the cloud as needed and in a very simple way.

See you son!

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