SEARCHDATABASE.COM | Database Administrator Tips February 11, 2004 IN THIS ISSUE | Table of Contents
1. DATABASE ADMINISTRATOR TIPS - SQL Server: A quick UNION ALL trick - DB2: Using sequence objects - Oracle: First impressions of 10g - More recent tips from members 2. IMPORTANT ANNOUNCEMENTS AND LINKS - Ask the Experts: Your tough DBMS questions answered - Featured Topic: DB2 tips and scripts _____________________________________________________________________ SPONSOR: SearchDatabase.com Product and Vendor Guide Simplify the process of finding specific database products and solutions. SearchDatabase.com's Product and Vendor Guide allows you to search listings alphabetically, and by industry or across such topics as database tuning, data warehousing and more. Visit our easy-to-use guide now! http://searchDatabase.com/r/0,,18969,00.htm?track=NL-94 ___________________________________________________________________ THIS WEEK'S TIPS: =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= A QUICK 'UNION ALL' TRICK | Dipak Padhy Let's say that you have two SQL Server tables that have columns of the datatype TEXT and you need all DISTINCT records that are linked or not linked to child tables. What do you do? >> CLICK for the full tip... http://www.searchDatabase.com/tip/1,289483,sid13_gci827176,00.html?track=NL-94 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= USING SEQUENCE OBJECTS | Craig Mulllins A great new feature of DB2 V8 is sequence objects, a separate structure that generates sequential numbers. Here's how to use it to prevent an online program from updating a serial number table to the same value that a batch program is going to use. >> CLICK for the full tip... http://searchdatabase.techtarget.com/ateQuestionNResponse/0,289625,sid13_cid569117_tax285651,00.html?track=NL-94 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= FIRST IMPRESSIONS OF 10G | Rob Westervelt After getting their hands on the latest Oracle database, DBAs and IT managers are raving about its newest features. >> CLICK for the full tip... http://searchdatabase.techtarget.com/originalContent/0,289142,sid13_gci949726,00.html?track=NL-94 ___________________________________________________________________ MORE RECENT TIPS FROM SEARCHDATABASE MEMBERS: LEVERAGE YOUR SQL SERVER 2000 SKILLS TO LEARN DB2 UDB V8 | R. Chong http://searchdatabase.techtarget.com/tip/1,289483,sid13_gci947038,00.html?track=NL-94 In the IT world today, we are constantly bombarded with new information -- new software products, new versions, new features. Leveraging your current knowledge is one way to keep up with this constant change. The author shows you how you can use your current knowledge of SQL Server 2000 to quickly gain skills in DB2 UDB for Linux, UNIX, and Windows Version 8. TERMINATING 11I CONCURRENT REQUESTS | Bob Schreiber http://searchoracle.techtarget.com/tip/1,289483,sid41_gci945160,00.html?track=NL-94 This script is useful for finding the SID and serial number for a specific Oracle 11i concurrent request that has been terminated in the applications, but has not been cleaned up by PMON. HOW TO WORK WITH DEFERRED CONSTRAINTS | Daniel Clamage http://www.searchOracle.com/tip/1,289483,sid41_gci941869,00.html?track=NL-94 Here is how to defer a unique key constraint in Oracle until the end of a transaction in order to temporarily have two key values the same. LEVERAGING YOUR ORACLE 9I SKILLS TO LEARN DB2 UDB V8 | Suita Gupta http://www.searchDatabase.com/tip/1,289483,sid13_gci945589,00.html?track=NL-94 If you're a database specialist interested in growing your DB2 Universal Database skills, there's a good chance that you've already developed database skills with another relational database product somewhere along the way. This detailed article shows you how to use your current knowledge of Oracle 9i to quickly gain skills in DB2 UDB for Linux, UNIX, and Windows Version 8. WORKING WITH ORACLE10G'S NEW GLOBAL TEMPORARY TABLE FEATURES http://www.searchOracle.com/tip/1,289483,sid41_gci944420,00.html?track=NL-94 Oracle Database 10g extends the features of global temporary tables to permit VARRAY and nested table columns. This tip will explain how to use these new features. Contributed by author Kevin Owens. DROP USER DATABASES WITHOUT USING NORMAL SYNTAX | Rudy Setiadi http://www.searchDatabase.com/tip/1,289483,sid13_gci931561,00.html?track=NL-94 When you restore a SQL Server database to another server or PC, sometimes the sysusers table is not consistent and users can't be dropped from the database. Here's how to drop user databases if they can't be dropped using normal syntax like sp_dropuser. SQL SERVER SIZE MAINTENANCE | Baya Pavliashvili http://www.searchDatabase.com/tip/1,289483,sid13_gci944134,00.html?track=NL-94 Database size maintenance is among the "boring" tasks that DBAs have to perform. However, if you allow your databases to grow without ever managing their size you're very likely to get in trouble. Here's a quick introduction to the topic. CREATE PROCEDURES AND COMPILE DDL SCRIPTS ON THE FLY | M. Huffine http://www.searchOracle.com/tip/1,289483,sid41_gci940477,00.html?track=NL-94 This Oracle procedure creates views, procedures, functions, and packages, and update, delete, and insert statements and compiles them. This provides developers with a means to call a procedure to create and compile all DDL scripts on the fly and see the output errors when executing stored DDL. WHY OLAP DESERVES MORE ATTENTION | Alexey Reznichenko http://www.searchDatabase.com/tip/1,289483,sid13_gci940713,00.html?track=NL-94 According to one survey, only thirty percent of companies use OLAP technology. Why? The author makes the case for OLAP and describes the various types and implementations. ALTERNATE WAY TO FIND DATABASE SIZE | Robert Oliver http://www.searchDatabase.com/tip/1,289483,sid13_gci935717,00.html?track=NL-94 Here's a quick SQL Server script that finds the size of the database and separates the log and data file sizes. USING 'INSTEAD OF' TRIGGERS | Alexander Kuznetsov http://www.searchDatabase.com/tip/1,289483,sid13_gci941941,00.html?track=NL-94 First introduced in DB2 UDB V8.1, INSTEAD OF triggers are very useful when you need to modify the database structure without changing the applications running against the changed database. Here's an introduction. Hundreds more free tech tips submitted by members: http://searchdatabase.techtarget.com/tips/0,289484,sid13_tax281808,00.html?track=NL-94 Share your knowledge, submit a tip, win a prize: http://searchdatabase.techtarget.com/tipsSubmit/1,289485,sid13,00.html?track=NL-94 ___________________________________________________________________ IMPORTANT LINKS: =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= YOUR TOUGH DATABASE QUESTIONS ANSWERED | Ask the Experts DB2: Why is text for SQL function in SYSIBM.SYSVIEW table? http://searchdatabase.techtarget.com/ateQuestionNResponse/0,289625,sid13_cid570616_tax285651,00.html?track=NL-94 DB2: Column check constraints versus trigger to check input values http://searchdatabase.techtarget.com/ateQuestionNResponse/0,289625,sid13_cid570619_tax285651,00.html?track=NL-94 SQL: Gaps in sequences http://searchdatabase.techtarget.com/ateQuestionNResponse/0,289625,sid13_cid571364_tax285649,00.html?track=NL-94 SQL: Scalar subselects http://searchdatabase.techtarget.com/ateQuestionNResponse/0,289625,sid13_cid571365_tax285649,00.html?track=NL-94 SQL: Customers with orders for the last N years http://searchdatabase.techtarget.com/ateQuestionNResponse/0,289625,sid13_cid570208_tax285649,00.html?track=NL-94 Sybase: Sybase on Linux http://searchdatabase.techtarget.com/ateQuestionNResponse/0,289625,sid13_cid570114_tax294910,00.html?track=NL-94 Sybase: Changing the IP address http://searchdatabase.techtarget.com/ateQuestionNResponse/0,289625,sid13_cid570120_tax294910,00.html?track=NL-94 >> CLICK for other database expert answers... http://searchdatabase.techtarget.com/ateExperts/0,289622,sid13,00.html?track=NL-94 >> CLICK for Oracle-related expert answers... http://searchoracle.techtarget.com/ateExperts/0,289622,sid41,00.html?track=NL-94 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= DB2 TIPS AND SCRIPTS | Featured Topic DB2 newbies and gurus alike will benefit from our collection of tech tips, scripts, news analyses, webcasts, and expert advice inside... http://searchdatabase.techtarget.com/featuredTopic/0,290042,sid13_gci772962,00.html?track=NL-94 ___________________________________________________________________ *********************SEARCHDATABASE CONTACTS*********************** TIM DICHIARA, Senior Site Editor (mailto:[EMAIL PROTECTED]) ROBYN LORUSSO, Site Editor (mailto:[EMAIL PROTECTED]) SARA CUSHMAN, Assistant Editor (mailto:[EMAIL PROTECTED]) ELLEN O'BRIEN, News Editor (mailto:[EMAIL PROTECTED]) ROB WESTERVELT, News Writer (mailto:[EMAIL PROTECTED]) GABRIELLE DERUSSY, Sales (mailto:[EMAIL PROTECTED]) ::::::::::::::::::::: ABOUT THIS NEWSLETTER :::::::::::::::::::::: This e-newsletter is published by SearchDatabase.com, a targeted Web site from TechTarget, the most targeted IT media and events company. 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