Oracle Corporation is a multinational computer technology company mostly known for its "Oracle" RDBMS and - since the acquisition of Sun Microsystems - for Java and MySQL.

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2
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2answers
104 views

Designing a system to archive databases with referential integrity

I have a very large Oracle database, with many many tables and millions of rows. I need to delete some of the rows end-to-end. By end-to-end, I mean, if I want to delete a row from a table then I must ...
12
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8answers
351 views

500 databases or 1 database with 500 tables or just 1 table with all the records? [duplicate]

I currently have an application that is used by a single end customer. For ease of discussion assume the application only needs a single database table for all records. I now need to support ...
0
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1answer
227 views

Using JDBC to asynchronously read large Oracle table

What strategies can be used to read every row in a large Oracle table, only once, but as fast as possible with JDBC & Java ? Consider that each row has non-trivial amounts of data (30 columns, ...
0
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1answer
212 views

What happens if computer crashes after giving commit command

If we are updating a field in SQL and ALTER the row also. After giving the COMMIT command, the system is crashed. What will happen to the commands given, whether it will UPDATE and ALTER the table ...
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3answers
131 views

Select custom output formats from database with SQL

I am planning to make a simple rest service application, and I am currently deciding the architecture. I have decided that I want to write the middle layer in multiple languages, so that it is easy to ...
1
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1answer
230 views

Who is responsible for updating the Java API and how can other individuals contribute?

I made a search on google to find out who are the people in Oracle responsible for updating the Java API in other words who are those responsible for adding new classes and methods to the API and ...
0
votes
1answer
272 views

How would you create useful tests for Oracle BI Publisher reports?

I'm curious about how to test reports that seem rather straightforward. I'm supposed to create test cases for an Oracle report(XML Publisher/BI Publisher). So for example, a report is supposed to just ...
6
votes
2answers
996 views

In what order are rows fetched absent ORDER BY clause?

One programmer is testing and comparing the same application which uses the same database structure, and the same data, only in two separate databases, one with Oracle 8 and one with Oracle 9. The ...
3
votes
3answers
224 views

Real world analogy for a clustered index

A db index is analogous to a table of contents. This helps me understand db index in an easy way. My question is are tehre any real world analogies for a clustered index?
0
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1answer
237 views

How to justify efforts to make capitalization of class and property names uniform? [closed]

In this thread, an Oracle Product Manager (username "Alex Keh") refused to make Oracle's EF provider to conform with .NET's PascalCase coding standard for class names and property names, saying that ...
2
votes
1answer
248 views

Is this Java Compiler error message incorrect? (byte loss of precision)

The following IMHO valid java program doesn't compile because the Oracle 1.7 javac compiler thinks there's a possible loss of precision in lines 5 and 6. If you uncomment line 3 and comment out line ...
1
vote
1answer
620 views

How does MySQL blob actually work?

This is a question driven by curiosity. I am learning Oracle database and Oracle database handles Blob data in a separate tablespace, which I believe reduces overhead while trying to read large Blob ...
0
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1answer
2k views

Oracle Database Integration with Team Foundation Server?

So my company is using TFS and SQL to Manage their Database (MS SQL Server). It integrates with the nightly build servers to do builds and produce scripts to build the entire Database. Also the ...
1
vote
0answers
716 views

.NET software design and Oracle ODP.NET UDT

I'm working on a new common .NET software design (mainly) for WCF-based web service applications with related client frontends (all written in C#). As far I've chosen some frameworks ...
1
vote
2answers
467 views

What is the equivalent of Entity Framework in the world of Oracle shops? [closed]

Within the world of developers/firms specializing in building/deploying solutions built around software built/sold by Oracle (aka "Oracle houses"), what ORM middleware is considered as the "industry ...
2
votes
1answer
203 views

Sorting rows off an autoincrementing primary key

Is it a bad practice to rely on an auto-incrementing primary key to sort rows in a table? A coworker and I were having an argument about this subject. We need to be able to find the last-inserted row ...
1
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5answers
712 views

Should heavy binary files not be stored in database? [closed]

I was asked an interesting question: Should a database contains all data? Or heavy binary files should be stored in file system? Example of heavy binary files : videos or heavy pdf files (+200 MB) ...
0
votes
1answer
330 views

For PL/SQL, do large companies prefer ANSI SQL joins or old Oracle joins? [closed]

I am interviewing for a PL/SQL position with a large corporation. I will have to write a multiple choice exam. I am wondering whether the exam will likely use old-style joins (joining happens in the ...
2
votes
1answer
101 views

Reporting and handling asynchronous process errors to a client

I have a product with two separate applications. The core of the product lives in the database (oracle) and runs according to a schedule. The other is a client application (currently ASP.NET MVC3) ...
1
vote
2answers
315 views

DB API for shell scripting (any shell)

I am faced with some legacy shell scripts that run batch data processing jobs in Oracle using SQL+. For the most part, the data tier does not have to communicate back to the script with retrieved ...
2
votes
1answer
2k views

is Oracle ADF Mobile free? and what is it's usage scope? [closed]

I would like to know whether Oracle ADF Mobile is free to use for someone who doesn't have the (expensive) ADF license, and what if I want to talk to a backend (web service), do I need Weblogic? ...
5
votes
4answers
6k views

Is there a recommended order to take the Oracle Java EE certification exams?

I recently passed the Oracle Certified Professional, Java SE 6 Programmer examination. Now, my boss would like me to take "the next step" to broaden my competence. I tried to explain that there is no ...
7
votes
1answer
648 views

Are there tools that do automated validation of database standards?

I'm looking for something akin to FxCop, but for databases. Basically, I want to have a tool where I configure my database standards (naming conventions, field types, or more complex custom rules). ...
1
vote
2answers
256 views

Oracle has some very helpful and free code…I think

I found that some of the code that Oracle uses is very useful so I don't have to re-invent the wheel. Given this is at the top of the file where the code in question is: /* * Copyright (c) 1997, ...
1
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1answer
794 views

Modular Database Structures

I have been examining the code base we use in work and I am worried about the size the packages have grown to. The actual code is modular, procedures have been broken down into small functional (and ...
2
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2answers
2k views

Development environment to manage multiple Oracle databases

I am in an enterprise environment where we have applications that need to run against multiple Oracle databases. Developers may need to manage multiple vintages of these databases to support ...
2
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4answers
197 views

.NET app - Should we use SQL Server and duplicate some reference data from an external Oracle DB? Or use Oracle and have a DB link?

We're looking to migrate some existing Excel/Access processes into a new system which will provide the users with a Silverlight frontend to run and view the reports instead of using MS Access. The ...
5
votes
5answers
378 views

Alternatives for comparing data from different databases

I have two huge tables on separate databases. One of them has the information of all the SMS that passed through the company's servers while the other one has the information of the actual billing of ...
6
votes
3answers
419 views

Materialized View vs POJO View based on Objects representing Oracle tables

I have about 12 Oracle tables that represent data that's being integrated from an external system into my web application. This data is going to be used in an informational and comparative manner for ...
1
vote
1answer
5k views

how to compare two large sets of data using PL/SQL?

I have two different tables in two separate databases with around 1.5 million records each. (BTW: im working on oracle databases) The objective is to check if every record present in table A is ...
5
votes
2answers
521 views

License of current JDK

I am wondering which license the current JDK 7 (NOT the OpenJDK) is using as I know it was once under GNU GPL but with the change of the Distributor License for Java I would like to know whether they ...
5
votes
6answers
2k views

Database Table Prefixes

We're having a few discussions at work around the naming of our database tables. We're working on a large application with approx 100 database tables (ok, so it isn't that large), most of which can be ...
2
votes
2answers
316 views

Concurrent Data Processing by Multiple People

Let's say I have a page, accessible by several people concurrently, that lists information that must be processed in some way by the user, after which it is either marked as "completed" and ...
3
votes
2answers
301 views

two approaches to database modeling - which one to use when

recently I have noticed a new approach to data modeling vs what I have used so far. This seems to be a way to address modeling of an entity that has a very large set of fields and quite often many of ...
7
votes
3answers
473 views

Who is responsible for the development of Java?

When I google about Java, the companies most mentioned are Sun, Oracle and IBM. I know that Oracle bought Sun, and the Java official website is Oracle domain, so I can assume that Oracle is the ...
4
votes
3answers
741 views

Middle tier language for interfacing C/C++ with db and web app [closed]

I have a web application requiring a middle-tier language to communicate between an oracle database and math routines on a Linux server and a flex-based application on a client. I'm not a software ...
4
votes
2answers
152 views

What is the equivalent of functions and methods in SQL?

In language like C or Java, there are things like functions/methods to modularize and abstract stuff. What is there in SQL, specifically for Oracle? I've seen people talking about using views to ...
3
votes
5answers
306 views

Should we rewrite it from scratch

At work, we have a software written in PL/SQL - Oracle Forms 10g, which runs the software as a Java Applet. My Company bought the software and we have to develop the software, but we feel that ...
5
votes
5answers
355 views

What is a good way to reset the Primary Key?

We've hit an application issue with an Oracle table Primary Key exceeding the limits used by a Java Integer (2 ^ 32) and one of the suggestions is to reset this to 1000 and let it start again. OR ...
3
votes
4answers
129 views

DB centric iPhone app question

The iPhone app i have an idea for deals with processing of the data stored as part of Oracle database at work. It'll be an interface to a dynamic set of data that is updated tens of thousands of time ...
14
votes
1answer
790 views

What is Oracle's commitment to Java? [closed]

We are investing heavily in Java, but after recent experiences and reading Joonas' response on that question: Had you used those flags in Java 6, you could have experienced not only crashes, ...
7
votes
3answers
634 views

How safe it is to do minor JVM upgrades?

I have been working on the JVM for years and I have very rarely experienced a JVM crash ... that is until approx 6 months ago. Since that I have experienced approximately 5 JVM crashes resulting ...
0
votes
3answers
726 views

Oracle Java SE Certification [closed]

Which exam(s) should be given for Java certification from Oracle. is Oracle 1Z0-851 exam old SCJP ? Recommend book which covers Oracle 1Z0-851 exam?
3
votes
2answers
3k views

Java stored procedures in Oracle, a good idea?

I'm considering using a Java stored procedure as a very small shim to allow UDP communication from a PL/SQL package. Oracle does not provide a UTL_UDP to match its UTL_TCP. There is a 3rd party ...
5
votes
9answers
7k views

Is there a large bank using Mysql or PostgreSQL? [closed]

I always thought the largest scale of banks use Oracle. However, there is no proof they really use Oracle instead of Mysql or PostgreSQL, nobody knows the secret. Any idea what they really use? Can ...
8
votes
2answers
6k views

Why are Oracle directories named /u01 /u02 etc…?

I've been working with the Oracle RDBMS for a few years and today, after installing one for the n-th time, I was left wondering, why do we install it in /u01, /u02, etc.? Of course you could install ...
5
votes
1answer
2k views

Is “VS Lightswitch” the “Oracle APEX” from Microsoft?

What do you think? Is "Visual Studio Lightswitch" becoming the "Oracle APEX" for SQL Server in the futrure? Are these two technologies comparable?
6
votes
3answers
4k views

Oracle owns Java but Google is using Java?

Ok, I don't get it. What does "Oracle owns Java" mean? Google is definitely using Java in Google App Engine, does that mean that Google have to pay Oracle for doing so?
2
votes
3answers
311 views

Free/low-cost online resources to study for certifications [closed]

So I am interested in working towards are few specific certs. Namely Oracle 11g, MySQL, and Java. I know there are tons of books out there, and I do plan to hit up my local library on these subjects ...
3
votes
2answers
576 views

What are the licensing issues involved in the Oracle/Apache java dispute?

I've just started following with interest the soap opera involving Oracle's acquisition of Java and the detriment of goodwill it seems to have generated in the open source community. Specifically, ...