http://dbasupport.com/ The Knowledge Center for Oracle Professionals en-us Copyright 2004 Jupitermedia Corporation 2010-09-01T12:35 lcole@jupitermedia.com http://www.dbasupport.com/oracle/ora11g/SQL-Interview-Questions.shtml Interviewing for a PL/SQL developer position may turn into a quiz, specifically about writing SQL and extracting information from a set of tables. The following questions are actual questions the author has been asked when interviewing for both a DBA position and a PL/SQL developer position. 2010-09-01T12:35 http://www.dbasupport.com/oracle/ora11g/Oracle-Database-11g-Table-Partitioning.shtml Table partitioning can help DBAs key database performance areas including i/o balancing, contention reduction, SQL statement performance improvements and even data availability. New table partitioning methods found in Oracle Database 11g can be implemented to help to achieve some of these goals. 2010-09-01T12:35 http://www.dbasupport.com/oracle/ora11g/OBIEE.shtml Oracle Business Intelligence 11g has been available since August 14 and many people are digging into the new features. Rather than repeating what is readily available elsewhere, this article looks at a history of the product, comparing the 11g version with the 10g version, so that you can better appreciate the changes. 2010-08-26T12:54 http://www.dbasupport.com/oracle/ora11g/Oracle-Database-11gR2-IO-Tuning03.shtml It's important to understand how well the underlying I/O architecture is performing versus its expected I/O rates, before tuning an Oracle Database 11g Release 2 (11gR2) for optimal I/O performance. Jim Czuprynski discusses how to implement a suitable extra-database I/O performance test and then capture the actual I/O performance results. 2010-08-25T12:55 http://www.dbasupport.com/oracle/ora11g/Database-Object-Interview-Questions.shtml Interviewing for a PL/SQL developer position ultimately will turn towards talking about database structures and objects. This article goes beyond the basic table and index questions that you might expect and offers a tip or two designed to impress the interviewer. 2010-08-18T11:54 http://www.dbasupport.com/oracle/ora11g/Oracle-Warehouse-Builder.shtml Oracle Warehouse Builder (OWB) has seen many changes lately. Keeping up with new features in the Oracle RDBMS is challenging enough, and when you add changes to products, well, you may have your work cut out for you. This article looks at some updates in OWB for Oracle Database 11gR2 (plus some of the changes between 10g and 11g). 2010-08-11T11:53 http://www.dbasupport.com/oracle/ora11g/SQL_Plan_Baselines.shtml SQL Plan Baselines are a new feature in Oracle Database 11g that helps to prevent repeatedly used SQL statements from regressing because a newly generated execution plan is less effective than what was originally in the library cache. Read on to learn more... 2010-08-04T16:59 http://www.dbasupport.com/oracle/ora11g/Basic-Concept-Interview-Questions.shtml James Koopman discusses how to give/take/study for an Oracle Database PL/SQL developer position, with a look at the top five questions he would ask potential Oracle Database PL/SQL Developers to help assess his/her basic knowledge. 2010-08-04T11:40 http://www.dbasupport.com/oracle/ora11g/Oracle-10053-Trace-Event-Dump-File.shtml Ever wonder what the Oracle Database Cost Based Optimizer (CBO) was doing behind the scenes or how it comes up with an execution plan? While other tools or settings show us WHAT the CBO comes up with, the 10053 trace event setting tells us HOW the CBO came to its decision (the final execution plan). 2010-07-29T12:36 http://www.dbasupport.com/oracle/ora11g/Oracle-Database-11gR2-IO-Tuning02.shtml Oracle Database 11g Release 2 (11gR2) makes it easier than ever to isolate and identify potential root causes of poor I/O performance. This article focuses on the various Oracle and non-Oracle tools to generate sample workloads to provide sufficient metrics for detection and eventual resolution of performance bottlenecks within the databases underlying input/output (I/O) subsystem. 2010-07-28T12:05 http://www.dbasupport.com/oracle/ora11g/Solve-Database-Performance-Tuning-Problems.shtml Constantly watching CPU utilization is critical to a database administrator's understanding of their database system. The sar utility, while seemingly small and insignificant can and should be used to help initially determine if any high-level CPU resource usage is out of balance, potentially signaling a database performance tuning problem. 2010-07-21T12:31 http://www.dbasupport.com/oracle/ora11g/Purchasing-Oracle-Database-Support.shtml Oracle's software is freely available for personal use but you'll have to pay for access to technical notes, patches, and other specialized content. Plus, there's a technical/legal catch; you can't use My Own Support to find database articles under a different product license. In terms of compliance, you really need a database product. Enter Oracle Database Personal Edition. 2010-07-15T12:34 http://www.dbasupport.com/oracle/ora11g/Oracle-Database-MetaData-DBMS_METADATA_DIFF.shtml Database change control is always difficult even under the best scenarios. Using Oracle's DBMS_METADATA_DIFF becomes a great weapon for DBAs to regain control. 2010-07-07T13:46 http://www.dbasupport.com/oracle/ora11g/Oracle-Database-11gR2-IO-Tuning.shtml Tuning the performance of Oracle Database 11gR2 is still just as much of an art as it is a science. Jim Czuprynski focuses on the detection and analysis of performance bottlenecks within the database's underlying input/output (I/O) subsystem. 2010-06-30T13:22 http://www.dbasupport.com/oracle/ora11g/Installing-Oracle-Database-Sample-Schemas-using-Data-Pump.shtml Having a re-usable dump file for installing Oracle Database Sample Schemas is much more convenient than the current method. Would you rather download a compressed file containing one (or several) dump files, including a parameter file suitable for use during an import session or job or use the Oracle Universal Installer? 2010-06-23T13:00