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Mapping In-memory Column Store to datafile Row Store extents

By Franck Pachot . Oracle In-Memory is an hybrid solution: an In-Memory Column Store in addition to the traditional Row Store. In the IMCS, data is stored in IMCU (In-memory compression units) and metadata is in SMU (Snapshot Metadata Units)(…)

In-memory trickle repopulation

By Franck Pachot . In the 'traditional' row store, the indexes are maintained at the same time as rows are changed. It's different with the In-memory Column Store. Changes are maintained by background processes. When rows are changed, the Snapshot(…)

MongoDB Days Paris

Tuesday, October 6th 2015, I attended to MongoDB Days France in Paris. The presentation was directly organized by MongoDB (10gen). Several presentations have be done to show how to use and deploy MongoDB in real cases. MongoDB is a(…)

How to use sqldeveloper’cart for loading data into DBaaS

Here we will show you how to unload data from a database on premise Oracle Database 12c PDB and how to load it into the table on the DBaaS Oracle Database 12c PDB. We will use a SQL Developer to(…)

How to connect DbaaS in your Cloud Control 12c

Oracle provides a monitoring console in the cloud but this console gives not all the information that we need. For example, it is not possible to send an email when a problem appear. However it is possible to use a(…)

SSISDB is too big and it is not every time the retention period’s fault!

In all blogs that I read, the solution is just to change the retention period to a reasonable value. Yes, it is true but in some case you need to go deeper in the analysis… Like you, I(…)

Want to benchmark your storage? It’s time to switch to DiskSpd tool!

As you certainly know, the well-known tool SQLIO is officially deprecated since few months. From my part, I had the opportunity (maybe the last) to use SQLIO for a customer project in order to benchmark the storage for SQL Server(…)

Dbvisit replicate CDC without old values

By Franck Pachot . In a previous post I presented how Dbvisit replicate can capture changes and write them in an audit table with old and new values. Here is how to do it wen you want only the(…)

Oracle In-Memory Column Store for Business Intelligence at #swissbiday

By Franck Pachot . I'm currently presenting at Swiss BI Day in Geneva about Oracle In-Memory option to improve analytic queries. Here are the slides, uploaded to SlideShare.

Oracle and Analytic Queries before In-Memory option

By Franck Pachot . Next Tuesday in Geneva I'm presenting Oracle In-Memory Column Store to Business Intelligence people at the Swiss BI Day After defining what is an analytic query, I show the different approaches to optimize that in(…)