Skip to content

Author Archives Lasse Jenssen

Java and JDBC for Oracle DBAs – Part 5: Spring-Boot, JdbcTemplate & DB migration (Using FlywayDB)

Today we’ll be looking at Spring-boot and a tools which developers use to migrate databases, FlywayDB. We’ll also look at how you can automate grants towards our two roles (which we created in part 3) whenever new tables are created. Part 1: Install/setup Oracle database (in docker) Part 2: Installing Java (JDK), Eclipse and Maven […]

Posted 25 July 2018 § Java § Oracle ‡ Comments (0) °

Java and JDBC for Oracle DBAs – Part 4: Your first JDBC Application

This is the fourth blog in this blog series which I have called “Java & JDBC for Oracle DBAs”. Now we are finally ready to start to develop towards the Oracle database we created in part 1, and schemas we created in part 3. Part 1: Install/setup Oracle database (in docker) Part 2: Installing Java […]

Posted 21 July 2018 § Java § Oracle ‡ Comments (0) °

Java and JDBC for Oracle DBAs – Part 3: Git, Oracle schemas and your first Java application

Finally we have come to the point where we start to create some Java code. First we’ll install Git, the most widely used modern version control system. We’ll continue to download some code from GitHub to create our Oracle schemas, and then we’ll create a very simple – but our first – Java application. We’ll […]

Posted 18 July 2018 § Java § Oracle ‡ Comments (0) °

Java and JDBC for Oracle DBAs – Part 2: Java, Eclipse, Maven & JDBC

Today I’ll continue with my series on creating an Java and JDBC test application for Oracle DBAs. Part 1: Install/setup Oracle database (in docker) Part 2: Installing Java (JDK), Eclipse and Maven (this) Part 3: Git, Oracle schemas and your first Java application Part 4: Your first JDBC Application Part 5: Spring-boot, JdbcTemplate & DB migration […]

Posted 17 July 2018 § Java § Oracle ‡ Comments (0) °

Java and JDBC for Oracle DBAs – Part 1: Oracle Database in Docker

Working together with Java developers I sometimes have to test aspects of the JDBC programming. When cooperating with the Java developers it is also very convenient to know some Java. In this blog series I’ll describe how you can build your own Java test application, and how you can get a little more acquainted with […]

Posted 14 July 2018 § Java § Oracle ‡ Comments (0) °

OUGN Bergen Spring Seminar 2018

Now you can download the slides from the OUGN Bergen spring seminar at Bergen Media City the 31st of May 2018. “Databasen i skyen – eksterne tabeller: Hvordan løser vi dette da?” m/Lars Johan Ulveseth, EVRY “The cost of idling” m/Espen Vinnes, RightGroup “Kafka & KSQL” m/Bjarte Brandt, TV2 “Kubernetes” m/Bjarte Brandt, TV2

Posted 18 June 2018 § Oracle ‡ Comments (0) °

PLSQL: Anonymous block to reset out-of-sync (too low) sequence

I wrote a short little PLSQL to fix an out-of-sync sequence issue. For some unknown reasons, there was stored primary key values in the database which was way larger than the currval for the dedicated sequence.

Posted 13 June 2018 § PL/SQL ‡ Comments (0) °

PLSQL: Using pipelined function to overcome config issue in Apache Solr

Recently I was facing an issue with an SQL coming from Apache Solr. The query was working on delta updates (since last check), and was fired from three different Solr instances keeping 3 cpus pretty busy . The query was one of the top SQLs regarding LIO, and was doing 9 FULL TABLE SCANs (where […]

Posted 31 May 2018 § Oracle ‡ Comments (0) °