Techblog http://www.somberi.com/techblog/ This blog contains articles and scripts for Oracle and Teradata DBAs and Developers en Copyright 2008 Tue, 22 Jan 2008 19:59:34 -0500 http://www.sixapart.com/movabletype/?v=3.2ysb5-20051201 http://blogs.law.harvard.edu/tech/rss Teradata Announcement I am pleased to announce that Mr.Claybourne Barrineau who is my friend and colleague at Coca-Cola Enterprises Inc. has kindly agreed to share his Teradata knowledge in this forum.

Claybourne Barrineau (or Clay as he is known to his friends), has been working with Teradata technologies since 1998. Clay is very well known in Teradata circles. He is a member of the Teradata Product Advisory Council (PAC) which  is an advisory group that provides input to the Teradata corporation regarding the product direction for Teradata RDBMS along with related products and platforms. Look out for his contributions in the coming days.

Claybourne Barrineau works as a Senior Application DBA with Coca-Cola Enterprises, Inc., where he is responsible for architecting and maintaining a world class Teradata information warehouse.

- Ramakrishna Nemani

]]> http://www.somberi.com/techblog/2008/01/teradata_announcement.php http://www.somberi.com/techblog/2008/01/teradata_announcement.php Announcements Tue, 22 Jan 2008 19:59:34 -0500 Teradata Dignostics commands Diagnostic commands are undocumented features of Teradata. These commands come in handy to DBAs when dignosing performance problems. I use a couple of the Diagnostic commands regularly in troubleshooting  performance issues.

 

]]> http://www.somberi.com/techblog/2007/11/dignostics_commands.php http://www.somberi.com/techblog/2007/11/dignostics_commands.php DBA Sun, 04 Nov 2007 18:25:39 -0500 An Introduction to Teradata components Teradata is a relational database management system. A Teradata system has many components (hardware and software). A Teradata system contains one or more nodes. A node is a term for a general-purpose processing unit under the control of a single operating system. The basic building block for a Teradata system, the node is where the processing occurs for the database.

A node contains a large number of hardware and software components as explained below…

]]> http://www.somberi.com/techblog/2007/11/an_introduction_to_teradata_co.php http://www.somberi.com/techblog/2007/11/an_introduction_to_teradata_co.php General Sun, 04 Nov 2007 17:19:32 -0500 RMAN Disaster Recovery script (rman_dr.ksh) http://www.somberi.com/techblog/2007/07/rman_disaster_recovery_script.php http://www.somberi.com/techblog/2007/07/rman_disaster_recovery_script.php DBA Tue, 03 Jul 2007 15:17:46 -0500 RMAN tape backup script http://www.somberi.com/techblog/2007/07/rman_tape_backup_script.php http://www.somberi.com/techblog/2007/07/rman_tape_backup_script.php DBA Sun, 01 Jul 2007 12:55:01 -0500 RMAN configuration script http://www.somberi.com/techblog/2007/07/rman_configuration_script.php http://www.somberi.com/techblog/2007/07/rman_configuration_script.php DBA Sun, 01 Jul 2007 12:19:25 -0500 RMAN archive logs backup script http://www.somberi.com/techblog/2007/07/rman_archive_logs_script.php http://www.somberi.com/techblog/2007/07/rman_archive_logs_script.php DBA Sun, 01 Jul 2007 12:16:10 -0500 RMAN complete database backup script http://www.somberi.com/techblog/2007/07/rman_backup_script.php http://www.somberi.com/techblog/2007/07/rman_backup_script.php DBA Sun, 01 Jul 2007 12:11:34 -0500 SQL Tutorial for the beginners This tutorial is aimed at giving a beginner a brief introduction to the Structured Query Language or SQL and get you started with using sqlplus to log on to Oracle and access and manipulate data. http://www.somberi.com/techblog/2007/07/sql_tutorial_for_the_beginers.php http://www.somberi.com/techblog/2007/07/sql_tutorial_for_the_beginers.php Developer Sun, 01 Jul 2007 08:42:15 -0500 Writing Efficient SQL Code for Oracle - Part 2
Introduction

In part 2 of this article I cover writing Efficient SQL Code for the OLTP environment.

Following topics are covered
  • Correlated Queries
  • Implicit data type conversions
  • Making sure indexes are considered by the Optimizer
  • Reduce the network traffic
]]> http://www.somberi.com/techblog/2007/06/writing_efficient_sql_code_for_1.php http://www.somberi.com/techblog/2007/06/writing_efficient_sql_code_for_1.php Developer Sat, 30 Jun 2007 20:52:49 -0500 Writing Efficient SQL Code for Oracle - Part 1 Introduction

This article aims to provide you with information and tips that will help you write efficient SQL code for Oracle databases. Part 1 covers batch environment.

Why is writing efficient SQL code important?
If you would like your application to scale well, then you would need to have SQL code that executes efficiently.  

How do you define efficient SQL code?
Any SQL code that does what it does, using minimum resources and in minimum possible time.

]]> http://www.somberi.com/techblog/2007/06/writing_efficient_sql_code_for_2.php http://www.somberi.com/techblog/2007/06/writing_efficient_sql_code_for_2.php Developer Sat, 30 Jun 2007 18:22:54 -0500 Output log of restore_datafile_new.ksh Output log of restore_datafile_new.ksh. read this along with restore_datafile_new.ksh script http://www.somberi.com/techblog/2007/06/output_log_of_restore_datafile_1.php http://www.somberi.com/techblog/2007/06/output_log_of_restore_datafile_1.php DBA Sun, 17 Jun 2007 18:19:22 -0500 restore_datafile_new.ksh This script is for restoring datafile to a new location/name and recovering it. http://www.somberi.com/techblog/2007/06/restore_datafile_newksh.php http://www.somberi.com/techblog/2007/06/restore_datafile_newksh.php DBA Sun, 17 Jun 2007 17:58:40 -0500 Output log of restore_datafile.ksh This is the output log of restore_datafile.ksh. Read this along with restore_datafile.ksh http://www.somberi.com/techblog/2007/06/output_log_of_restore_datafile.php http://www.somberi.com/techblog/2007/06/output_log_of_restore_datafile.php DBA Sat, 16 Jun 2007 22:00:53 -0500 Restore datafile from disk (restore_datafile.ksh) This script restores datafile from disk to the original location. http://www.somberi.com/techblog/2007/06/restore_datafile_from_disk_res.php http://www.somberi.com/techblog/2007/06/restore_datafile_from_disk_res.php DBA Sat, 16 Jun 2007 21:56:49 -0500