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Morgan Patou

Alfresco: some useful database queries

By | Application integration & Middleware, Entreprise content management | 28 Comments

In my previous post, I talked about the Lifecycle of Alfresco Nodes. You may have noticed that I tried to insert in my explanations some elements that are specific to databases (tables, fields, aso…). These elements are quite essential to prepare a post like this one: more database oriented. I already explained what exactly are the consequences on the database side when a node is removed and I will try in this post to share some useful…

 
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Nicolas Jardot

AOUG – Real World Performance Tour

By | Database management | No Comments

This week, Tom Kyte, Graham Wood and Andrew Holdsworth were present in Europe for several dates. One of the events was organised by the Austrian Oracle User Group (AOUG) in collaboration with the German and Swiss User Group (DOAG and SOUG) and I had the chance to be there to attend to one session of the Real Worl Performance tour session in Vienna. I think there is no real need to present the Real World…

 
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David Hueber

ODA 12.1.X.X.X – add a multiplexed control file under ACFS

By | Database management | 5 Comments

Since version 12, ODA stores databases on ACFS volumes instead of ASM directly. This slightly changed the way the files are managed and administer. This articles presents how to multiplex your control files on ACFS. At first database creation, ODA set up 3 ACFS volumes to store all non-CDB databases (CDB are managed on dedicated volumes): /dev/asm/datastore-386 62G 5.2G 57G 9% /u01/app/oracle/oradata/datastore /dev/asm/datastore-286 1.7T 871G 836G 52% /u02/app/oracle/oradata/datastore /dev/asm/datastore-360 2.2T 5.6G 2.2T 1% /u01/app/oracle/fast_recovery_area/datastore These…

 
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Pierre Sicot

PostgreSQL for Oracle DBAs – an introduction

By | Database management | One Comment

Having worked for several years as an Oracle DBA, I decided to have a look at the PostgreSQL database and see how it functions in comparison to the Oracle Database. The “Enterprise DB” graphical installation of PostgreSQL 9.3 is quite easy and rather fast. Under Linux you run the graphical installer, dialog boxes lead you through the installation process. You enter the specific information of your system and at the end of the PostgreSQL installation,…

 
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Stéphane Savorgnano

Microsoft TechEd Madrid: Optimizing T-SQL & SQL Server 2014 Futures and Features

By | Technology Survey | No Comments

Today, I am beginning my second TechDay by a session about Optimizing T-SQL. You need to know about this if you are using SQL Database or Microsoft SQL Server 2012. Tobias Ternström, Lead Program Manager, was the speaker of this session. His team, five hundred persons, works on SQL Server engine and mostly focuses on performance. There are 3 three different ways to run SQL: Physical machine can be scale-up full control roll your own…

 
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Grégory Steulet

Oracle 12c now available for download on OTN and Oracle E-delivery

By | Database management | No Comments

Finally after some months … The Oracle’s long-awaited 12c database (12.1.0.1) is now available for download on OTN and Oracle E-delivery ( http://www.oracle.com/technetwork/database/enterprise-edition/downloads/index.html). Without any surprise the first platforms are Linux and Solaris! Weird, but until now no “official” announcement from Oracle has been made… Have a look on all new features integrated in this release: http://docs.oracle.com/cd/E16655_01/server.121/e17906/chapter1.htm#NEWFTCH1      

 
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Microsoft Team

Three basic points on SQL Server Best Practice

By | Technology Survey | No Comments

A few weeks ago, I went to the Swiss Database Days 2013 and followed the “Practical SQL Server Performance Troubleshooting” workshop. During this workshop, I have seen a different way of troubleshooting, but I was surprised to see that some participants were not aware that some basic SQL Server Best Practice do not depend on the instance settings. This blog posting is a reminder of some of these points. Swiss Database Days 2013: SQL Server…

 
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Grégory Steulet

ORA-03113 caused by Database Vault Rule Sets

By | Database management | No Comments

Database Vault solution allows to create rules that manage access to database. Among these rules there is what is called in Database Vault “Rule Sets”. These logic components are written as PL/SQL functions to return Boolean results.

If rule expressions do not match the user context, the access is refused and a specific message can be configured in order to warn the user that he is not authorized to access this specific object. These expressions can be for instance related to the client IP address, the session username, the time or date and many other things.

 
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Stéphane Haby

Stéph@TechEd 2012: Episode 1 – the Pre-Conf. Seminar

By | Technology Survey | No Comments

This morning, I was very happy to go to my first TechEd. Between the 10 seminars, as I said yesterday, I started with SQL Server 2008R2/2012 performance, tuning and optimization session. The thing is that we had just one session for the whole day. I will not copy the presentation of the 2 speakers (Thomas LaRock and Denny Cherry) who presented remarkably this session despite the failure of air conditioning during the morning. Fortunately, it…

 
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