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The following is a brief list of excellent sites for Oracle DBAs Of course, any omissions from this list are purely unintentional my sincere apologies to any other great sites that I either don t know about yet or have just plain forgotten about These sites just happen to be some of the ones that I visit often:.

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Hotsos (http://wwwhotsoscom/): The redoubtable Cary Millsap, well-known creator of the Optimal Flexible Architecture (OFA) guidelines and the main author of the best-selling Oracle performance book, Optimizing Oracle Performance, is the person behind the Hotsos site Visit this site for sophisticated, cutting-edge discussions of performance tuning and other issues Oracle-Base (http://oracle-basecom/): This site contains extremely useful and very well written Oracle DBA articles The site provides free help for preparing for the Oracle DBA certification exams Ixora (http://wwwixoracomau): Oracle internals expert Steve Adams is the main force behind this site Ixora offers first-rate discussions about many Oracle and UNIX performance issues, although not much new material has been put up on this web site in recent years OraPub (http://wwworapubcom/): This is another top-notch site led by an ex-Oracle employee It provides consistently high-grade white papers on key database administration topics DBAsupportcom (http://www.

dbasupportcom/): This is another useful site that offers many scripts and a how-to series of articles on a variety of topics Burleson Consulting (http://wwwdba-oraclecom/): Popular Oracle writer and editor Don Burleson runs this web site (and well-known author Mike Ault is a regular contributor) This site is packed with terrific articles covering a broad range of DBA topics The Pipelines (http://wwwquest-pipelinescom/): Quest Software maintains this highly useful site aimed not only at Oracle databases, but also at the DB2 and SQL Server databases The Pipelines has excellent white papers, scripts, and other goodies Well-known authors, including the prolific writer and Oracle PL/SQL expert Steven Feuerstein, contribute great papers on this site Oracle FAQ (http://wwworafaqcom/): The Oracle FAQ site, run by Frank Naude of South Africa, provides a lot of question-and-answer type discussions of relevant topics.

The following code lets you clean the archive directory by removing old reports and backup shadow files more than seven days old.

Like native code, managed code supports two major options for memory allocations: a stack and a heap. The managed stack has a lot of similarities to the native stack. Both stacks contain stack frames (also called activation records) to store data that is bound to a method call, like parameters, local variables, and temporary memory. In fact, the CLR implements the managed stack mainly in terms of the native stack. Due to the similarities between the native and managed stacks, it is often sufficient to see both concepts as one. However, sometimes an explanation of certain internals, like the garbage collection and .NET s security model, requires differentiating them.

There are several other sites that are useful, including dbazinecom (http://dbazinecom/), Mark Rittman s Oracle Weblog (http://rittmannet/), and Database Journal (http://www databasejournalcom) whose authors, Steve Callum, Jim Czuprinski, and James Koopmann, present solid articles on various Oracle features..

iSQL*Plus is a browser-based interface to the Oracle database, and it is very similar to SQL*Plus. It generates its output in the form of HTML tables, and you don t need to install or configure anything for the iSQL*Plus user interface other than a web browser. On the server side, only an Oracle HTTP server with the iSQL*Plus Server is needed. 12 shows how to use the iSQL*Plus interface.

Oracle provides several powerful tools to help with loading and unloading of data and similar activities. The following sections describe the main ones.

The Data Pump Export and Import utilities are the successors to the traditional export and import utilities; they help with fast data loading and unloading operations. The original export and import utilities are still available, but Oracle recommends the use of the newer and more sophisticated tools. 14 discusses the Data Pump utility in detail.

find $ARCHIVE -mtime +7 -exec rm {} \;

The SQL*Loader is a powerful and fast utility that loads data from external files into tables of an Oracle database. 13 discusses SQL*Loader in detail.