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ORACLE DATAWAREHOUSE | oracle-datawarehousing.blogspot.com Reviews
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Oracle Tutorials
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Data Warehouse Architectures ~ ORACLE DATAWAREHOUSE
http://oracle-datawarehousing.blogspot.com/2011/02/data-warehouse-architectures.html
All about Data Warehousing with Oracle. Error Logging and Handling. Data warehouses and their architectures vary depending upon the specifics of an. Organization's situation. Three common architectures are:. 9632; Data Warehouse Architecture (Basic). 9632; Data Warehouse Architecture (with a Staging Area). 9632; Data Warehouse Architecture (with a Staging Area and Data Marts). Data Warehouse Architecture (Basic). Warehouses because they pre-compute long operations in advance. For example, a. Your warehou...
Need for Materialized Views ~ ORACLE DATAWAREHOUSE
http://oracle-datawarehousing.blogspot.com/2011/02/need-for-materialized-views.html
All about Data Warehousing with Oracle. Error Logging and Handling. Need for Materialized Views. You can use materialized views to increase the speed of queries on very large. Databases. Queries to large databases often involve joins between tables, aggregations such as SUM, or both. These operations are expensive in terms of time and processing power. The type of materialized view you create determines how the materialized view is refreshed and used by query rewrite. Aggregations (SUM, COUNT(x), COUNT(*...
Overview of ETL in Data Warehouses ~ ORACLE DATAWAREHOUSE
http://oracle-datawarehousing.blogspot.com/2011/02/overview-of-etl-in-data-warehouses.html
All about Data Warehousing with Oracle. Error Logging and Handling. Overview of ETL in Data Warehouses. You need to load your data warehouse regularly so that it can serve its purpose of. Facilitating business analysis. To do this, data from one or more operational systems. Needs to be extracted and copied into the data warehouse. The challenge in data. Warehouse environments is to integrate, rearrange and consolidate large volumes of. Addressed by mechanisms similar to what we now call ETL. Interact wit...
Compare OLTP and Data Warehousing Environments ~ ORACLE DATAWAREHOUSE
http://oracle-datawarehousing.blogspot.com/2011/02/compare-oltp-and-data-warehousing.html
All about Data Warehousing with Oracle. Error Logging and Handling. Compare OLTP and Data Warehousing Environments. Following figure shows the key differences between OLAP and DataWarehousing Environments. One major difference between the types of system is that data warehouses are not. Usually in third normal form (3NF), a type of data normalization common in OLTP. Data warehouses and OLTP systems have very different requirements. Here are some. 9632; Data modifications. 9632; Schema design. OLTP system...
Materialized View Enabling Query Rewrite ~ ORACLE DATAWAREHOUSE
http://oracle-datawarehousing.blogspot.com/2011/02/materialized-view-enabling-query.html
All about Data Warehousing with Oracle. Error Logging and Handling. Materialized View Enabling Query Rewrite. Before creating a materialized view, you can verify what types of query rewrite are. Possible by calling the procedure DBMS MVIEW.EXPLAIN MVIEW, or use DBMS. ADVISOR.TUNE MVIEW to optimize the materialized view so that many types of. Query rewrite are possible. Once the materialized view has been created, you can use. Considered available for rewriting queries. Reasons why a specific query is not...
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Cognos Tutorials For Beginners - Easy Steps: Integrating with Other IBM Cognos Products
http://cognos-tutorials.blogspot.com/2014/02/integrating-with-other-ibm-cognos.html
Cognos Tutorials For Beginners - Easy Steps. Best online resource for Cognos Tutorials. Using Report Studio, report authors create, edit, and distribute a wide range of professional reports. They can also define corporate-stand. How Cognos Business Intelligence Works. When you view or create a report, you are viewing data stored in your organizations databases. The following diagram explains the step. Cognos 8 Business Intelligence Certifications. Integrating with Other IBM Cognos Products. To download, ...
mapreduce-tutorial.blogspot.com
MapReduce Tutorial: April 2011
http://mapreduce-tutorial.blogspot.com/2011_04_01_archive.html
Using Amazon Web Services. Hadoop's power comes from its ability to perform work on a large number of machines simultaneously. What if you want to experiment with Hadoop, but do not have many machines? While operations on a two or four-node cluster are functionally equivalent to those on a 40 or 100-node cluster, processing larger volumes of data will require a larger number of nodes. After the cluster has been started, you can log in to the head node over ssh with the bin/hadoop-ec2 login script, and pe...
Pig Tutorial: Introduction
http://pig-tutorial.blogspot.com/2011/04/introduction.html
Pig is a platform for analyzing large data sets. Pig's language, Pig Latin, lets you specify a sequence of data transformations such as merging data sets, filtering them, and applying functions to records or groups of records. Users can create their own functions to do special-purpose processing. Pig Latin programs execute in a distributed fashion on a cluster. Our current implementation compiles Pig Latin programs into Map/Reduce jobs, and executes them using Hadoop on Kryptonite. Loading Data Into Pig.
Pig Tutorial: Pig Latin
http://pig-tutorial.blogspot.com/2011/04/pig-latin.html
The programming language used to write Pig queries is called Pig Latin. The MapReduce programming model can be thought of as composed of three distinct phases:. 1 Process input records. 2 Form groups of related records. 3 Process groups into outputs. Subscribe to: Post Comments (Atom). Loading Data Into Pig. Pig Latin Data Types. Simple template. Powered by Blogger.
Pig Tutorial: April 2011
http://pig-tutorial.blogspot.com/2011_04_01_archive.html
The Pig tutorial shows you how to run two Pig scripts in Local mode and Hadoop mode. Local Mode: To run the scripts in local mode, no Hadoop or HDFS installation is required. All files are installed and run from your local host and file system. Hadoop Mode: To run the scripts in hadoop (mapreduce) mode, you need access to a Hadoop cluster and HDFS installation available through Hadoop Virtual Machine provided with this tutorial. Java Installation (Note: already set-up on the Hadoop VM.). 1Go to the /home...
Pig Tutorial: Pig Latin Data Types
http://pig-tutorial.blogspot.com/2011/04/pig-latin-data-types.html
Pig Latin Data Types. Values in Pig Latin can be expressed by four basic data types:. An atom is any atomic value (e.g., "fish"). A tuple is a record of multiple values with fixed arity. e.g., ("dog", "sparky"). A data bag is a collection of an arbitrary number of values. e.g., {("dog", "sparky"), ("fish", "goldie")}. Data bags support a scan operation for iterating through their contents. A data map is a collection with a lookup function translating keys to values. e.g., ["age" : 25].
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ZooKeeper Tutorial: Data Storage
http://zookeeper-tutorial.blogspot.com/2011/04/data-storage.html
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Pig Tutorial: Pig Tutorial
http://pig-tutorial.blogspot.com/2011/04/pig-tutorial.html
The Pig tutorial shows you how to run two Pig scripts in Local mode and Hadoop mode. Local Mode: To run the scripts in local mode, no Hadoop or HDFS installation is required. All files are installed and run from your local host and file system. Hadoop Mode: To run the scripts in hadoop (mapreduce) mode, you need access to a Hadoop cluster and HDFS installation available through Hadoop Virtual Machine provided with this tutorial. Java Installation (Note: already set-up on the Hadoop VM.). 1Go to the /home...
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Oracle Tips
Create table In Oracle. What is Oracle Database. Friday, June 5, 2009. What is Oracle Database. The Oracle Database (commonly referred to as Oracle RDBMS or simply Oracle) consists of a relational database management system (RDBMS) produced and marketed by Oracle Corporation. As of 2009[update], Oracle remains a major presence in database computing.[1]. Labels: What is Oracle Database. Tuesday, May 5, 2009. Subscribe to: Posts (Atom). What is Oracle Database. View my complete profile.
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Software Business Internet Technical System Market and Trading Finance. Saturday, January 13, 2007. CASL Adds Support for Janam XP20/30 Series Barcode Scanners. About WAGWARE Systems, Inc and Brainyware, LLC. Turn your device into an iPhone now. Source : www.geek.com/news. Connaught House goes live with retail management system. Exclusive jewellery and gift retailer Connaught House has this week gone live with a complete Microsoft Retail Management System operating simultaneously across its shops. The sy...
oracle-databaseadministration.blogspot.com
Oracle DBA
Thursday, February 28, 2008. All back ups have to be learnt today. Posted by Data Base Adminstration. A Database administrator (DBA) is a person who is responsible for the environmental aspects of a database. In general, these include:. Recoverability - Creating and testing Backups. Integrity - Verifying or helping to verify data integrity. Security - Defining and/or implementing access controls. Availability - Ensuring maximum uptime. Performance - Ensuring maximum performance. Installation of new softw...
oracle-datawarehousing.blogspot.com
ORACLE DATAWAREHOUSE
All about Data Warehousing with Oracle. Error Logging and Handling. You can modify a dimension using the ALTER DIMENSION statement. You can add or. Drop a level, hierarchy, or attribute from the dimension using this command. Referring to the time dimension mentioned earlier, you can remove the. Attribute fis year, drop the hierarchy fis rollup, or remove the level fiscal. Year In addition, you can add a new level called f year as in the following:. ALTER DIMENSION times dim DROP ATTRIBUTE fis year;.
Oracle DBA in the making
Oracle DBA in the making. Knowledge is all about sharing. Wednesday, February 9, 2011. The following methods are valid for backing-up an Oracle database:. Exports are "logical" database backups in that they extract logical definitions and data from the database to a file. It is a set of files needed to recover from any sort of database failure, we can create it (redundancy set) using the User managed/RMAN utility backups. It comprises of the following files:. Golden Rule of Backup. It is recommended that...
Oracle
IMP: ORA-12560 TNS:protocol adapter error. I am trying to import a schema dump on Oracle XE database on my Windows XP machine. Here is the command I am using. Imp myuser file=mydump.dmp fromuser=myuser touser=mynewuser. I didn't get any problem when I use the same command for importing another schema on local database. Not sure why I am getting this error now. IMP: ORA-12560 TNS:protocol adapter error. You need to specify the user and database name when you have more then one. Links to this post. MyTable...
オラクル【Oracle】データベース情報局 | オラクル【Oracle】のことならオラクルデータベース情報局！Oracledeデータベースの初歩から応用までを紹介しています。
オラクル Oracle のことならオラクルデータベース情報局 Oracledeデータベースの初歩から応用までを紹介しています。 Select to char(sysdate,'EEYY/MM/DD','nls calendar=' Japanese Imperial' ') from dual;. Select to date('平成22/03/15','EEYY/MM/DD','nls calendar=' Japanese Imperial' ') from dual;. ALERTファイルを除くトレースファイルの最大サイズはMAX DUMP FILE SIZE 単位 ＯＳのブロック数. サーバー側とクライアント側にインストールされ両者の通信を受け持つネットワークインタフェース これで良い ちゃんと定義せよ ミドルウェアと呼んではいけない. Oracle Netのサーバ側プロセスをリスナーと呼び、リスナー パラメータ (listener.ora) ファイルで構成します。 Windows ORACLE HOME network admin. Quit exit : LSNRCTLのイグジット.
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Oracle dba and database restore recovery coaching resource and programs
FREE Book and Sign-up. Unix for Oracle DBA. Database Restore and Recovery Coaching from Flavia D’Souza who is known for delivering Results. Best Kept Secrets of database restore and recovery. To restore and recover your oracle database faster than the average business. Xa0;Click . Xa0; for more info. Lavia brings AWARENESS of how restoring your database just 30 minutes faster, after an unexpected system downtime or an outage could SAVE thousands of dollars for your company. She has been a full time data...
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