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  • Getting Oracle VM VirtualBox Ready for an Oracle Database

    Everyone wants to go virtual, but getting started with Oracle&#146;s VM VirtualBox can be tricky. James Koopmann takes a quick look at installing Oracle VM VirtualBox 3.2.4, covering some of the features you as a database administrator or database developer might run across while trying to install an operating system or Oracle database.

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  • Copy Table to Another Database

    - by Derek Dieter
    There are few methods of copying a table to another database, depending on your situation. Same SQL Server Instance If trying to copy a table to a database that is on the same instance of SQL Server, The easiest solution is to use a SELECT INTO while using the fully qualifed database names.SELECT * INTO Database2.dbo.TargetTable FROM Database1.dbo.SourceTableThis will [...]

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  • Database Partitioning and Multiple Data Source Considerations

    - by Jeffrey McDaniel
    With the release of P6 Reporting Database 3.0 partitioning was added as a feature to help with performance and data management.  Careful investigation of requirements should be conducting prior to installation to help improve overall performance throughout the lifecycle of the data warehouse, preventing future maintenance that would result in data loss. Before installation try to determine how many data sources and partitions will be required along with the ranges.  In P6 Reporting Database 3.0 any adjustments outside of defaults must be made in the scripts and changes will require new ETL runs for each data source.  Considerations: 1. Standard Edition or Enterprise Edition of Oracle Database.   If you aren't using Oracle Enterprise Edition Database; the partitioning feature is not available. Multiple Data sources are only supported on Enterprise Edition of Oracle   Database. 2. Number of Data source Ids for partitioning during configuration.   This setting will specify how many partitions will be allocated for tables containing data source information.  This setting requires some evaluation prior to installation as       there are repercussions if you don't estimate correctly.   For example, if you configured the software for only 2 data sources and the partition setting was set to 2, however along came a 3rd data source.  The necessary steps to  accommodate this change are as follows: a) By default, 3 partitions are configured in the Reporting Database scripts. Edit the create_star_tables_part.sql script located in <installation directory>\star\scripts   and search for partition.  You’ll see P1, P2, P3.  Add additional partitions and sub-partitions for P4 and so on. These will appear in several areas.  (See P6 Reporting Database 3.0 Installation and Configuration guide for more information on this and how to adjust partition ranges). b) Run starETL -r.  This will recreate each table with the new partition key.  The effect of this step is that all tables data will be lost except for history related tables.   c) Run starETL for each of the 3 data sources (with the data source # (starETL.bat "-s2" -as defined in P6 Reporting Database 3.0 Installation and Configuration guide) The best strategy for this setting is to overestimate based on possible growth.  If during implementation it is deemed that there are atleast 2 data sources with possibility for growth, it is a better idea to set this setting to 4 or 5, allowing room for the future and preventing a ‘start over’ scenario. 3. The Number of Partitions and the Number of Months per Partitions are not specific to multi-data source.  These settings work in accordance to a sub partition of larger tables with regard to time related data.  These settings are dataset specific for optimization.  The number of months per partition is self explanatory, optimally the smaller the partition, the better query performance so if the dataset has an extremely large number of spread/history records, a lower number of months is optimal.  Working in accordance with this setting is the number of partitions, this will determine how many "buckets" will be created per the number of months setting.  For example, if you kept the default for # of partitions of 3, and select 2 months for each partitions you would end up with: -1st partition, 2 months -2nd partition, 2 months -3rd partition, all the remaining records Therefore with records to this setting, it is important to analyze your source db spread ranges and history settings when determining the proper number of months per partition and number of partitions to optimize performance.  Also be aware the DBA will need to monitor when these partition ranges will fill up and when additional partitions will need to be added.  If you get to the final range partition and there are no additional range partitions all data will be included into the last partition. 

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  • Database Insider - June 2014 issue now available

    - by Javier Puerta
    The June issue of the Database Insider newsletter is now available. (Full newsletter here) NEWS June 10: Oracle CEO Larry Ellison Live on the Future of Database Performance At a live webcast on June 10 at Oracle’s headquarters, Oracle CEO Larry Ellison is expected to announce the upcoming availability of Oracle Database In-Memory, which dramatically accelerates business decision-making by processing analytical queries in memory without requiring any changes to existing applications.Read More New Study Confirms Capital Expenditure Savings with Oracle Multitenant A new study finds that Oracle Multitenant, an option of Oracle Database 12c, drives significant savings in capital expenditures by enabling the consolidation of a large number of databases on the same number or fewer hardware resources.  Read More Read full newsletter here

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  • SQL Database Management Survey

    Win one of two $50 Amazon vouchers by entering our database management survey. We’re finding out more about how SQL database professionals are doing backup and recovery, using cloud services and more. Answer the short survey for a chance to win. Learn Agile Database Development Best PracticesAgile database development experts Sebastian Meine and Dennis Lloyd are running day-long classes designed to complement Red Gate’s SQL in the City US tour. Classes will be held in San Francisco, Chicago, Boston and Seattle. Register Now.

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  • Multiple database accesses or one massive access?

    - by DudeOnRock
    What is a better approach when it comes to performance and optimal resource utilization: accessing a database multiple times through AJAX to only get the exact information needed when it is needed, or performing one access to retrieve an object that holds all information that might be needed, with a high probability that not all is actually needed? I know how to benchmark the actual queries, but I don't know how to test what is best when it comes to database performance when thousands of users are accessing the database simultaneously and how connection pooling comes into play.

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  • Database Insider - September 2012 issue

    - by Javier Puerta
    The September issue of the Database Insider newsletter is now available. (Full newsletter here) IT ROI CENTER - Oracle Exadata IT ROI Center: Next Steps for Transforming Your BusinessVisit Oracle’s IT ROI Center to discover how customers are using Oracle Exadata to improve efficiency, increase service levels, raise employee productivity, and enable faster time to market—all with lower IT costs CUSTOMER BUZZ 30 Times Performance Improvement at P&G with Oracle Exadata BNP Paribas Runs Global Trading 17 Times Faster with Oracle Exadata Banco Santander (Brasil) S.A. Transforms Data Center with Oracle Exadata FEATURED TRAINING On Demand Training: Oracle Exadata Database Machine Learn about Oracle Exadata Database Machine today using Oracle University’s video streaming training on demand. View a free sample video of the Oracle Exadata Database Machine course. 

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  • Database for Ubuntu

    - by Toby J
    I am trying Ubuntu 12.04 booted from a DVD disk before I install it. I currently havwe windows 8 (which I hate) and I have a couple of Data base programs with my movies, hundreds of movies, in them. Is there a database available for Ubuntu that is compatible with Microsoft Database? There are too much data in the current database file for me to have to rewrite the program. So far, I love the Ubuntu 12.04. I have been able to access my microsoft works spreadsheet files and documents with no problem. And I like the thuderbird email and just about everything else about Ubuntu 12.04. I just need to be able to access my database files and to write lables and envelopes. Thanks. Toby J Paris, TN

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  • Use a SQL Database for a Desktop Game

    - by sharethis
    Developing a Game Engine I am planning a computer game and its engine. There will be a 3 dimensional world with first person view and it will be single player for now. The programming language is C++ and it uses OpenGL. Data Centered Design Decision My design decision is to use a data centered architecture where there is a global event manager and a global data manager. There are many components like physics, input, sound, renderer, ai, ... Each component can trigger and listen to events. Moreover, each component can read, edit, create and remove data. The question is about the data manager. Whether to Use a Relational Database Should I use a SQL Database, e.g. SQLite or MySQL, to store the game data? This contains virtually all game content like items, characters, inventories, ... Except of meshes and textures which are even more performance related, so I will keep them in memory. Is a SQL database fast enough to use it for realtime reading and writing game informations, like the position of a moving character? I also need to care about cross-platform compatibility. Aside from keeping everything in memory, what alternatives do I have? Advantages Would Be The advantages of using a relational database like MySQL would be the data orientated structure which allows fast computation. I would not need objects for representing entities. I could easily query data of objects near the player needed for rendering. And I don't have to take care about data of objects far away. Moreover there would be no need for savegames since the hole game state is saved in the database. Last but not least, expanding the game to an online game would be relative easy because there already is a place where the hole game state is stored.

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  • Database Deployment: The Bits - Copying Data Out

    Occasionally, when deploying a database, you need to copy data out to file from all the tables in a database. Phil Factor shows how to do it, and illustrates its use by copying an entire database from one server to another. SQL Backup Pro wins Gold Community Choice AwardFind out why the SQL Server Community voted SQL Backup Pro 'Best Backup and Recovery Product 2012'. Get faster, smaller, fully verified backups. Download a free trial now.

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  • Renaming a Published SQL Server Database

    I have transactional replication configured in production. I am wondering if we could rename the publication database in transactional replication without having to drop and recreate the replication set up. Also, is it possible to rename the database files of the publication database without affecting the replication configuration. Get Smart with SQL Backup Pro Powerful centralised management, encryption and more.SQL Backup Pro was the smartest kid at school Discover why.

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  • Normal Redundancy (Double Mirroring) Option Available

    - by TammyBednar
    Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Calibri","sans-serif";} The Oracle Database Appliance 2.4 Patch was released last week and provides you an option of ASM normal redundancy (double mirroring) during the initial deployment of the Database Appliance. The default deployment of the Oracle Database Appliance is high redundancy for the +DATA and +RECO disk groups. While there is 12TB of raw shared storage available, the Database Backup Location and Disk Group Redundancy govern how much usable storage is presented after the initial deployment is completed. The Database Backup Location options are Local or External. When the Local Backup Option is selected, this means that 60% of the available shared storage will be allocated for the Fast Recovery Area that contains database backups and archive logs. The External Backup Option will allocate 20% of the available shared storage to the Fast Recovery Area. So, let’s look at an example of High Redundancy and External Backups. Disk Group Redundancy – High --> Triple Mirroring to provide ~4TB of available storage Database Backup Location – External --> 20% of available shared storage allocated to +RECO +DATA = 3.2TB of usable storage, +RECO = 0.8TB of usable storage What about Normal Redundancy with External Backups? Disk Group Redundancy – Normal --> Double Mirroring to provide ~6TB of available storage Database Backup Location – External --> 20% of available shared storage allocated to +RECO +DATA = 4.8TB of usable storage, +RECO = 1.2TB of usable storage As a best practice, we would recommend using Normal Redundancy for your test and/or development Oracle Database Appliances and High Redundancy for production.

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  • Database Insider - December 2012 issue

    - by Javier Puerta
    The December issue of the Database Insider newsletter is now available. (Full newsletter here) Big Data: From Acquisition to Analysis 2012 will likely be remembered as the year of big data, as a new generation of technologies enables organizations to acquire, organize, and analyze the exponentially growing and typically less-structured data generated from a variety of new sources. Oracle has produced a series of five short videos that offer a quick and compelling high-level introduction to big data. Read More Total Cost of Ownership Comparison: Oracle Exadata vs. IBM P-Series Read the research that found that over three years, the IBM hardware running Oracle Database cost 31 percent more in total cost of ownership than Oracle Exadata. Webcast - Oracle Exadata Database Machine X3 Learn about Oracle’s next-generation database machine, Oracle Exadata X3, that combines massive memory and low-cost disks to deliver the highest performance at the lowest cost. Available in an eight-rack configuration, it allows you to start small and grow.    Maximum Availability with Oracle GoldenGate Discover how to eliminate not only unplanned downtime but also planned downtime resulting from database upgrades, migrations, and consolidation.Thursday, December 1319:00 CET / 6 pm. UK   

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  • Restoring a Publisher Database in SQL Server

    Introduction Restoring any database is a critical task which will be  complicated by the database to be  restored being a publisher database. For the purposes of this article, I will assume familiarity with the different types ... [Read Full Article]

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  • Oracle Database 12c ?????(??10?29?)

    - by user763299
    ?????/??: ????????? Oracle Database 12c ?????,??????????????????????????????????,?????????? Oracle ????,???? Oracle ???????????????,???? Database 12c ??????????,??????????????????????????? ????????,???????????? Database 12c ???????????????: ? Oracle SQL Developer ?????????? ? Oracle SQL Developer ??????? ?? Oracle Enterprise Manager ?????????? ??? 2013?10?29? ??? ???????: ?? 13391606778 010-64418595-6056 Email:[email protected] ???? 09:00-09:15 ?? 09:15-10:15 ????:Oracle Database 12c ?? ???? Oracle Database 12c ???????????,???????????????????????????? 10:15-11:15 Oracle????????? 11:15-11:30 ?? 11:30-12:15 ????????? Oracle Database 12c ?? Oracle ?????????????????????????????? 12:15-12:30 ?? 12:30-13:30 ?? 13:30-14:15 ????:? Oracle SQL Developer ????????? ????????????????? - ?????????????? - ??????????? - ???????? 14:15-15:15 ????:? Oracle SQL Developer ???Data Redaction Data Redaction?????????????????: - ??Redaction?? - ??Redaction?? - ????Redaction?? - ??Redaction??????? - ??Redaction?? - ??Redaction?? 15:15-16:00 ????:?? Oracle Enterprise Manager Express ?????????? ??????: - ?? Oracle Enterprise Manager Express - ?? Oracle Enterprise Manager Express ??????? 16:00 ?? ??????????????,??????????????????????? ???? © 2013,??????/????????????? ???? | ????????? | ????

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