AMIS, Data Driven Blog – Oracle & Microsoft Azure
Getting value from IoT, Integration and Data Analytics
If you are anything like me you will have multiple virtualboxes running on your system. Sometimes you might want to run a copy of a virtualbox for different purposes. Like running an Oracle 11 Devdays instance as test environment but also running the same vbox for customer testing. If you […]
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0 Maarten wrote a post on Virtual Columns in the oracle database. I read a blogpost on preventing people issuing SELECT * on a table. This was done in a different database, so I decided to try it out in my Oracle Database. First I create a simple table: and I […]
0 0 Some time ago I was asked to assist in fixing or at least finding the cause of a performance problem. The application ran fine until the Virtual Private Database (VPD) policy was applied. Oracle claims there should be near zero impact on your application when you implement VPD, then how […]
0 0 There is a ‘rule’, I think it was created by Tom Kyte, stating: If you can do it in SQL, do it in SQL. I came across some code the other day that makes perfect sense to do then you are running an Oracle 10g (or earlier) instance. I rewrote […]
0 0 Overview of table functions Table functions are functions that produce a collection or rows (either a nested table or a varray) that can be queried like a physical database table. You use a table function like the name of a database table, in the FROM clause of a query. The […]
0 0 After a presentation by Lucas Jellema I decided to try something with types in Oracle. One of the issues posed in this presentation was that the type cannot self-reference. Neither direct nor indirect. A table like the emp table cannot be expressed as an object type. The table has […]
0 0 The long awaited Early Adopter installation is finally available at http://apexea.oracle.com. You can request a workspace here to play around with the new version. I have just been playing around with it for about an hour an from what I’ve seen it’s a big change to what we’re used to […]
0 0 On February 13th I will be giving a webinar on Edition Based Redefinition hosted by Red Gate Software.I will be talking about how EBR can be used. It will not be an in-depth session, rather an overview of how EBR works or actually what you should do so you can […]
0 0 SQL today is the foundation for any successful application. Whether it is a SOA implementation, an ADF or APEX application, a Forms application or any other usage of the Oracle Database (or any other relational database), SQL is key for the success. AMIS has embraced the evolution of SQL through […]
0 0 Afgelopen dinsdag 4 oktober waren Andre van Winssen en ik de aangewezen personen om een presentatie bij de OGh te verzorgen. Andre vertelde in ongeveer een uur het een en ander over Application Contexts en het gebruik van DBMS Crypto. Een deel uit de masterclass die hij bij AMIS verzorgt. […]
0 0 At the KScope conference in Long Beach, CA one of the most interesting sessions I attended was a session called: Five Features You Ought to Know About the Oracle Scheduler by Eddie Awad. It was a nice presentation where I actually learned stuff I didn’t know. At least not in […]
0 0 Last week I attended my very first ODTUG KScope conference in Long Beach, California. I have attended conferences by ODTUG before, but they were never this broad. Sunday On Sunday I attended the APEX symposium. It was nice to see that APEX is being developed by a rather small, but […]
0 0 Have you ever wanted to replace a character in a string just by position? I needed this the other day and IMHO there is no way in Oracle PL/SQL to do this, so I decided to write this my self.
0 0 I have had trouble with a certain view I have to create at the customer site I am currently working at. The view involves 3 SQL queries combined by using a UNION ALL, since the separate queries are mutually exclusive. Using the UNION ALL makes it a bit faster since […]
0 0 After visiting the OPP/APEXPosed conference in Brussels I decided to write a post on how to create a relatively simple dynamic action in APEX. When you are working with password fields your only visual check to see if the entered text in both fields match may be the number of […]
0 0 I have been invited to deliver two talks on performance at the OPP conference, November 10th and 11th in Atlanta. The topics I will address are Pipelined Table Functions and Optimizing SQL with Collections. I will be among some of the best experts in the PL/SQL world, including Steven Feuerstein, […]
0 0 Last Wednesday Quest organized a seminar in Amsterdam on the performance of the Oracle database and the programs you write for it. There were three presentations. Development Application Testing Database maintenance Development The main issue in this presentation was that you should care about performance as early as possible in […]
0 0 Steven Feuerstein wrote an entry on his Toadworld blog where he checks the refactoring capabilities of SQL-Developer. I am trying the same things in PL/SQL Developer to see if this does do the trick.
0 0 When I was in Chicago for the OPP2008 and APEXposed event I talked to someone who seems to have trouble understanding bulk operations in PL/SQL. I helped him out by providing a test/demo script, that shows how it could be done. First of all, one of the most important rules […]
0 0 Op 3,4,10 en 11 december organiseert AMIS weer de 7Up training. In vier dagen worden de deelnemers wegwijs gemaakt in de nieuwe mogelijkheden die Oracle biedt. Veel mensen zijn met Oracle 7 begonnen en werken nu met een recentere versie van de database (9, 10 of 11), maar bouwen nog […]
0 0 Yesterday evening we had a nice, interactive, session about PL/SQL Developer. Theo Tol (BI4U) came by to tell us more about the tool and how it can be used. There was some nice information on the different windows for the different tasks and then there where some tips on how […]
0 0 In het midden van de 90-er jaren waren er heel weinig en vrij beperkte ontwikkeltools beschikbaar voor het ontwikkelen van PL/SQL. Tegenwoordig is dat heel anders en zijn er verschillende leveranciers van IDE’s voor het ontwikkelen van en beheren van databaseobjecten en databasecode. Toad for Oracle van Quest en SQL […]
0 0 When I was presented with the possibilities of Rulegen it made me wonder: How can these rules be tested. Rulegen is a tool to create rules in the database by just typing in some SQL queries. Rulegen will then use this input to generate a couple of triggers and a […]
0 0 I ran into an issue at a customer site where certain triggers were disabled in the database where they should be enabled. It appeared that an update script, that is run every night, first disables all triggers on a couple of tables. Then does what it needs to do, without […]
0 0 At AMIS they are working on teaching a lot of us about the fundamentals of SOA. We just had the first couple of events in which Lucas and Peter taught us stuff about XML and BPEL. To get an idea of what SOA and webservices actually are and how we […]
0 0 On February 21st I did a presentation on CodeGen at AMIS. Just a short presentation on what is possible using this great tool. I have created a couple of questions for the hands-on part of the session. In case you are wondering what CodeGen is exactly, CodeGen is a freeware […]
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