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Administration of Oracle

Oracle Tips by Burleson Consulting

(After the Bloom is off the Rose . . .)

If you have reached this point, one of three things has happened: You successfully installed your Oracle system using the guidelines in Chapter 1 and are anxiously awaiting further enlightenment; you failed to successfully install your Oracle system using the guidelines in Chapter 1 but are big-hearted enough to give this book another chance at proving that itís worth the purchase price; or you donít have Oracle yet or have an existing system and just want to see what system administration tools this book can provide. In any case, the next few chapters are the heart of this book and are really what you paid for.

In this chapter we will look at Oracle database-level administration and management in detail. We will cover the tools available to the DBA and administration of the physical database. In the following chapters we will examine object, space, and user administration; techniques for using the tools; tuning issues and solutions; backup and recovery; and security.

As the title of this chapter implies, Oracle administration isnít always a rose garden; sometimes it is the thorns. Hopefully, by using this book, you can avoid some of the thorns that have gouged Oracle DBAs in the past. In writing this and subsequent chapters, use was made of the Oracle documentation set; articles from Oracle magazine; IOUG (International Oracle Userís Group) presentations; Oracle Internals magazine; DBMS magazine; Oracle Corporation Support Forums (metalink.oracle.com and technet.oracle.com); the RevealNet Web site (www.revealnet.com) with its DBA and PL/SQL pipelines; www.orafans.com; Internet newsgroups (lazyDBA, OAUG); and my own real-life experiences and those of several Oracle database experts.

In order to make full use of this chapter, it is suggested that the DBA either load the scripts from the Wiley Web site, or load each by hand. The account used to run these scripts should have the DBA_UTILITIES package, included with the scripts, installed and have a default and temporary tablespace other than SYSTEM; the account should not be the SYSTEM account. It is also suggested that a small (generally around 10 MB or less) tablespace be created to hold the temporary tables and permanent tables required to run the various utilities. The DBA_ views should be created and available. The install scripts must be run so the V$ views are available. Once the website scripts are downloaded, the file CRE_DBAUTIL_GRANTS.SQL script must be run from the SYS account to provide the needed direct grants. The CREA_DBAUTIL_TABS.SQL script will create the DBA tables and required views. Finally, the DBA_UTILITIES9.SQL (or DBA_UTILITIES8.SQL if you are on 8 or 8i) script should be run to create some needed procedures and functions.

This chapter assumes that the DBA is familiar with basic SQL and SQL*Plus commands. As we move along, PL/SQL will also be used, so familiarity with these tools would be helpful. May I suggest Steve Feuersteinís excellent book on PL/SQL, PL/SQL Programming (OíReilly & Associates, 1995), and the companion volume, PL/SQL Advanced Programming (OíReilly & Associates, 1996), as well as Oracle Provided Packages (OíReilly & Associates, 1996) by Feuerstein, Beresniwiecz, and Dunn; and of course Oracle PL/SQL Tips and Techniques, Joseph Trezzo, (Oracle Press, Osborne-McGraw Hill, 1999.) None of the scripts is overly complex, however, and even if you arenít an SQL virtuoso, you should be able to make some sense of them. Some other good books to have on hand are:

Oracle DBA 101 (Oracle Press Editions, Osborne-McGraw Hill, 2000) by Marlene Theriault, Rachel Carmichael, and James Viscusi.

Oracle Tuning Tips and Techniques (Oracle Press Editions, Osborne-McGraw Hill, 1999) by Rich Niemiec, Joe Trezzo and Brad Brown.

In any case, when proceeding through this chapter, you should have as references the SQL Language Reference Manual, the SQL*Plus Reference Manual, the Oracle Database Administratorís Guide, the PL/SQL Reference Guide, the Oracle RDBMS Performance Tuning Guide, and the appropriate installation and administration guide for your operating system or the equivalent Oracle9i server guides, . The Oracle document set is detailed and provides excellent information--if you know where to find the data you need among all of the material provided. The scripts and procedures presented in this chapter are being used at several sites to manage and administer Oracle databases. Each has been tested under Oracle8, Oracle8i, and Oracle9i, and under VMS, NT, Windows, and UNIX implementations of Oracle databases. It is suggested that the scripts be called from a centralized menu, either an operating system script or Forms application. A sample script for both KORNE and BASH shell are provided on the Web site. By use of shortcuts, which utilize the location of the scripts as a working directory on Windows-based systems, you can achieve the same results. This provides for a single entry of your Oracle username and password instead of having to invoke SQL*Plus each time you want to run a script. Under NT, I suggest creating an SQLPLUS icon that has as its working or start-in directory the script directory under the SQL script storage directory. The scripts are kept simple for ease of understanding and to ensure that those who may not have the transaction-processing option or other advanced Oracle features implemented may still find this book of use. Only a few of the scripts use PL/SQL; every attempt has been made to follow the KISS principle (Keep it simple, stupid!).

Generic Tools Available to All DBAs

 In almost every Oracle database, the DBA will have access to SQL, SQL*Plus, and, until 9i,  SVRMGR. Almost all 7.2 and later installations may also have the Oracle Enterprise Manager toolset. In some runtime versions of Oracle, such as are used with some CAD/CAM packages for drawing tracking, only SVRMGR may be provided. The PL/SQL tool is always provided with all post-7.0 Oracle systems as well.

See Code Depot for Full Scripts

This is an excerpt from Mike Ault, bestselling author of "Oracle 10g Grid and Real Application Clusters".

You can buy it direct from the publisher for 30%-off and get instant access to the code depot of Oracle tuning scripts.

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