In a previous article we saw why a query can run with a different plan and how to force one in SQL Server. In this article we will see how to force a plan in an Oracle database with... read more
SQL Server in the Cloud Era. Time for Azure SQL Databases?
Microsoft in the era of the Cloud with Azure decided to give as many options as possible so that everyone is satisfied. Whether you are fans of on-premise or hybrid cloud. With SQL Server in Virtual Machine services… read more
How to bulk data into database using Oracle Data Pump (impdp)
Many times we will need to keep the table data and their metadata (packages, procedures, functions, etc.) so that we can then import them into the same or a different system. In a previous article we saw the use of Oracle Data… read more
The Great Database Battle – SQL Server vs Oracle Database
The two best-known RDBMS (Relational Database Management Systems) with the largest market shares are Microsoft SQL Server and Oracle Database. They have a lot in common but also a lot of differences between them. Let's see in detail: Filegroups: They are… read more
How we collect blocking queries via Extended Event and how we read its data
In an earlier article we saw how we create an Extended Event to see queries with a long duration. In this article we will create an Extended Event that records blockings. All we need to do is create it… read more
How do we find how much more it takes to complete the query and which is delayed (SQL Server Query Profiling)
Many times we will encounter queries that take too long to complete or never complete at all. To find what exactly is at fault the most useful information is the actual execution plan. As the actual execution plan requires the completion of the query, with… read more
How can we see historical image of a table in Oracle Database with Flashback Query
Many times we will need to see what entries the table had some time ago. We may still have to restore it from a wrong update or even drop. In Oracle this is easily done using flashback query… read more
How can we calculate our car insurance premiums in SQL Server using Python (no API)
Let's say we have in SQL Server a table of cars and drivers and we want to find their cheapest premium. This will certainly be possible with an API / Web Service. But this solution would require the… read more
How do we return an Oracle database to the previous state of a restore point (Flashback Database to guaranteed restore point)
In the article we will analyze how we can use the flashback database function in a guaranteed restore point in an Oracle database. The flashback database belongs to the category of data protection and provides the possibility to freeze the… read more
