Search Results

Search found 30293 results on 1212 pages for 'database insider'.

Page 162/1212 | < Previous Page | 158 159 160 161 162 163 164 165 166 167 168 169  | Next Page >

  • What is the best way to work with large databases in Java depending on context?

    - by user19000
    We are trying to figure out the best practice for working with very large DBs in Java. What we do is a kind of BI (business Intelligence), i.e analyzing very large DBs, and using them to create intermediate DBs that represent intelligent knowledge of the DBs. We are currently using JDBC, and just preforming queries using a ResultSet. As more and more data is being created, we are wondering whether more appropriate ways exist for parsing and manipulating these large DBs: We need to support 'chunk' manipulation and not an entire DB at once(e.g. limit in JDBC, very poor performance) We do not need to be constantly connected since we are just pulling results and creating new tables of our own. We want to understand JDBC alternatives, with respect to advantages and disadvantages. Whether you think JDBC is the way to go or not, what are the best practices to go by depending on context (e.g. for large DBs queried in chunks)?

    Read the article

  • Mission Critical: SQL Server Upgrade

    You're faced with the task of doing a SQL Server Upgrade? Do you know all the steps, and the right order to do them? You do? Even with interruptions and distractions? Maybe, but it is wise to be able to refer to the Mission-Critical Task checklist.

    Read the article

  • Oracle Enterprise Manager 12c - New tools announced at OOW

    - by Cinzia Mascanzoni
    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:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Calibri","sans-serif"; mso-bidi-font-family:"Times New Roman";} Oracle announced enhanced tools and programs for Oracle Enterprise Manager 12c, including a new Enterprise Manager Extensibility Exchange, updated Oracle PartnerNetwork Enterprise Manager Knowledge Zone, and additional Enterprise Manager Extensibility Kit resources, enabling management of all software and hardware assets from a “single pane of glass,” to help partners accelerate their transformation to the public and private cloud.

    Read the article

  • What makes Java so suitable for writing NoSQL Databases

    - by good_computer
    Looking at this page that aggregates the current NoSQL landscape, one can see that the majority of these projects are written in Java. Databases are complex systems software dealing with the file system, and so C/C++ would be a better choice than Java for this. (that's my thinking which might be flawed) Secondly, databases deal with transferring large amounts of data from disk to RAM -- which they call a working set. The JVM takes non-trivial amount of RAM for it's own purpose -- so it would be more efficient to use a platform that leaves lots of memory for data instead of hogging it for its own operations. The major relational databases are ALL written in C/C++ MySQL C, C++ Oracle Assembler, C, C++ SQL Server C++ PostgreSQL C SQLite C So what makes Java so popular in NoSQL world.

    Read the article

  • Introducing Oracle Enterprise Manager 12c Release 4

    - by Roxana Babiciu
    Oracle continues to demonstrate its leadership in delivering innovations for IT Operations Management by introducing accelerated Zero-to-Cloud for Oracle-based private clouds with this latest release. Join a live webcast June 25th 9:00 AM PDT ! 12:00 PM EST by the Oracle Enterprise Manager team to learn more about capabilities that partners and customers can use to rapidly adopt private cloud across an enterprise. Register today!

    Read the article

  • Good choice of languages for making a program that manages and organizes business? [closed]

    - by Ronney P
    I've been reading questions and discussions on this website but haven't made an account to start talking or asking anything I had doubts in so please bare with a newbie here. What are specific languages that have are able to make a program that will record, and organize things such as hours, salaries, payments? Also solve business problems, mostly with payments, how much money there will be after interest, taxes and such. Anyway, I've been looking into COBOL, C++, Java, HTML, JavaScript, VB.NET and a couple more. Which ones should I focus on and look into more? I very much appreciate any answers. Thank you.

    Read the article

  • Learning MySQL Query optimization

    - by recluze
    I've been doing web/desktop/server development for a while and have worked with many databases (mysql mostly). I've come to the point in my career when I need to have someone look at my queries because they're 'kind of slow'. I believe it's now time to start learning query optimization. While I know the basics of index and joins etc., I'm not familiar with how to use, say, the EXPLAIN output to improve performance of my queries. I have not been able to find any online material that starts with the basics and takes me to application. Getting a book is not an option right now so I'm looking for tips about how to proceed with this. I hope this question is general enough not to get closed.

    Read the article

  • Is it good practice to keep 2 related tables (using auto_increment PK) to have the same Max of auto_increment ID when table1 got modified?

    - by Tum
    This question is about good design practice in programming. Let see this example, we have 2 interrelated tables: Table1 textID - text 1 - love.. 2 - men... ... Table2 rID - textID 1 - 1 2 - 2 ... Note: In Table1: textID is auto_increment primary key In Table2: rID is auto_increment primary key & textID is foreign key The relationship is that 1 rID will have 1 and only 1 textID but 1 textID can have a few rID. So, when table1 got modification then table2 should be updated accordingly. Ok, here is a fictitious example. You build a very complicated system. When you modify 1 record in table1, you need to keep track of the related record in table2. To keep track, you can do like this: Option 1: When you modify a record in table1, you will try to modify a related record in table 2. This could be quite hard in term of programming expecially for a very very complicated system. Option 2: instead of modifying a related record in table2, you decided to delete old record in table 2 & insert new one. This is easier for you to program. For example, suppose you are using option2, then when you modify record 1,2,3,....,100 in table1, the table2 will look like this: Table2 rID - textID 101 - 1 102 - 2 ... 200 - 100 This means the Max of auto_increment IDs in table1 is still the same (100) but the Max of auto_increment IDs in table2 already reached 200. what if the user modify many times? if they do then the table2 may run out of records? we can use BigInt but that make the app run slower? Note: If you spend time to program to modify records in table2 when table1 got modified then it will be very hard & thus it will be error prone. But if you just clear the old record & insert new records into table2 then it is much easy to program & thus your program is simpler & less error prone. So, is it good practice to keep 2 related tables (using auto_increment PK) to have the same Max of auto_increment ID when table1 got modified?

    Read the article

  • I want to combine the databases from two different sites under one URL. How is this possible?

    - by Punct Ulica
    I have a small site that I want to merge with a bigger one. How can I merge the second one with the first? I know that one solution would be to make the smaller one a subdomain of the bigger one, but I would like the following thing to happen: when I click on a category or a tag, posts from both sites/databases would appear. Something like Smashing Magazine did when it assimilated designinformer.com. The other solution and the one that I would prefer would be to merge the two databases, but I don't know if this is possible.

    Read the article

  • How To return md5 salted hash? [closed]

    - by user1790627
    Here is the function and this function returns value for sessionGuid. Example, User1 login and join chat then the value of User1 for sessionGuid is. 1 User2 value for sessionGuid is. 2 User3 . value .3 i want this function return md5 salted hash to avoid hacks. function get_current_online_session_login() { $oSrvSec = &App::getModuleService('Account', 'Security'); $login = $oSrvSec->getCurrentUserLogin(); $aReq = getRow(App::getT('online_session'), 'online_session_user = "' . $login . '"'); // return $aReq['online_session_login']; return $aReq['online_session_id']; }

    Read the article

  • Oracle 11g R2 1???????~????????(Exadata??)?????

    - by Yusuke.Yamamoto
    ??2010?11?17???Oracle Database 11g Release2(R2) ???????1???? ????Oracle Database 11g R2 ?????????????????????????? ???? 2010/11/17:????? 2011/01/07:???????(Exadata/??) 2011/01/18:???????(Exadata/?????????????) 2011/02/22:???????(Exadata/?????:IT Leaders ????????) 2011/04/21:?????? 2011/04/21:???????(????????????) 2011/04/21:???????(Exadata/???????????????????????????????????) 2011/06/27:Oracle Exadata Database Machine ????1,000??? ?? Oracle Database 11g R2 ??????? Oracle Database 11g ?????????(????) ??????? Oracle Database 11g R2(???/????) Oracle Database 11g R2 ??????? ?? ??? 2009?11?11? Oracle Exadata Database Machine Version 2 ???? 2009?11?17? Oracle Database 11g R2 ???? 2010?02?01? ?????????????????????????????? 2010?03?31? SAP ? Oracle Database 11g R2 ??????????ISV????????·??????????? 2010?05?18? Windows Server 2008 R2 / Windows 7 ?????????Oracle Database 10g R2 ??? 2010?06?23? Oracle Application Express 4.0 ???? 2010?07?09? ?? Windows RDBMS ?????(2009?)????????? 2010?08?17? TPC-C Benchmark Price/Performance ???????? 2010?09?13? Patch Set 11.2.0.2 for Linux ????(??) 2010?10?20? Oracle Exadata Database Machine X2 ???? 2010?11?17? Oracle Database 11g R2 ????1?? 2010?11?19? ?? Windows RDBMS ?????(2010????)????????????? 2011?03?29? Oracle SQL Developer 3.0 ???? 2011?06?27? Oracle Exadata Database Machine ????1,000????????????????·?????????????? Oracle Database 11g ?????????(????) ????????????????????????????????(????)? ????(??????????) ??????????(???) ????? ????(???) ?????·???????·??? ????? ????·??????·?? ???? ???????(??????????????)|???99.999%???????500???????????? - ITpro ??????????? ????(????) ???(???) ????????(???) ??????(???????????) Oracle Exadata Database Machine ????? Oracle Database 11g ??(????)? ??????????????????????????????????? ????(??????) ????????????? ?????·???????·??? ??(??????????????) ?????(??????????) ?????????(????????) ?????????? ????(???????) ?????? ????/????·???????? ???????????(???????/NTT??????????) ????????????? ???? ???????????? ?????? ??? ?????|DWH?????????????? - IT Leaders(????????)|DWH?????????????? - IT Leaders ????(???????????) Customer Voice ????:????IT?????24??365????????????????????? ?Oracle9i Database ?????????????????????Oracle Database 11g ???????????????????????? Oracle9i Database ???????????????? Customer Voice ??????:Oracle Database 11g????????????????????? ?Oracle ASM ???????????????????I/O????????????????????????????????????? ??????? Oracle Database 11g R2(???/????) ???????????????? Oracle 11g R2 ????????? - IT Leaders ??????????11g R2?5???? - ??SE????Oracle??? - Think IT ????????????????????????~Oracle Database 11g Release2 ????????? - oracletech.jp ??????????? Oracle Database 11g Release 2(11gR2)|??????????? ???????|???????????

    Read the article

  • Oracle Days ???????????????????????????!!

    - by OTN-J Master
    ???????????????????????2????Oracle Days 2012 Tokyo??????????????? Oracle Days???????????????????Oracle OpenWorld 2012???·???????????????????????????????????????????????????OpenWorld?????????????????????????????????????????????????????????????????????????????????????(10/24??)??????????????????????????????????????·????????????????????????????????????????????????????? -------------------------------------------10?30?(?)???????????????D1-E-1?13:00-13:45 (1) ??????·????????D1-E-2?14:00-14:45(2) Oracle Real Application Clusters?D1-E-3? 15:00-15:45 (3) ????????/???????D1-E-4? 16:00-16:45 (4) ????-------------------------------------------??????????????????????????????????????????????????????????????????????????????????????????? >>  ??????????(??????????????????) >> ???????????????????!

    Read the article

  • ???·20??!?? ??????????!??????????????????

    - by OTN-J Master
    2011??1??????????????????????????????????????????????????20?????????????????????1????????????????????????20?????????????????????????????????????????????????????????????????!??????????????????????????????????????????????? 20????????????????????????????--------------------------------------------------------------------------???1?????????????????20?????????????? ????????????????????????????? ????????????????????????????????????? ??????(?????????????????????????? ???????????????????????)? ???????????????Oracle???????????????????? ?????????????????????????????????????? ??????????????????????????????????????? ??????????????????????????????????? ?????????????????? ????--------------------------------------------------------------------------??????????????????????????????????????????????????(1??????????)???????????????????????? ?1? ????????????????? ?2? RAC(Real Application Clusters)???????????? ?3? Statspack????????????????????? ?4? ???????FAQ:???????????????? ?5? ???????????????????????? ?6? ??????????????????? ?7? ????????? ?8? ??????? ?9? ??SQL???? ?10? ??????????? ?11? ??SQL????(2????? ?12? I/O?????? ?13? ??????????? ?14? ???·?????????? ?15? ????????? ?16? ?????????? ?17? ?????????? ?18? ??????? ?19??UNDO????REDO??????? ?20????????????? ??????????OTN Newsletter?OTN Twitter???????????????????????????????????????????????????????????????????????????????????????????????OTN??????????????????????????????????????????????????”???????????”?????????????????URL?????????? (????????????????????????????????????)???????????????????

    Read the article

  • ????????????????????????&?????????????!

    - by OTN-J Master
    ??????????????????????????????????? ????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????!!??????????????????????????????????????????????????????????????    ?????????????!DBA??? ?11? ?????????????? ~????????????????~ ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????DBA???????????????????????????????????????????DBA????????????????????????????????????????????????????????????????????????????? >> ?????????????? ??     ???????????????22? ????????????(2)? ??????????????????????????????????? ??????????????????????????????????????????????????????????10???????????????????????????????????????????OTN Webmaster?????: ????????????????????????????????????(?????????????????)???????????????????????(*^^*)>> ??????????? ??

    Read the article

  • ???????/??????????!? ????????

    - by Yusuke.Yamamoto
    ????? ??:2010/12/21 ??:??????/?? ?????????????·???????????????????????????????????????????????????????????????????????????1???????????????! ???????????????/ ???·?????:E-R?/???????/ ????????????????????·????????? ????????? ????????????????? http://otndnld.oracle.co.jp/ondemand/otn-seminar/movie/DBDesign_02241730.wmv http://www.oracle.com/technology/global/jp/ondemand/otn-seminar/pdf/DBdesign.pdf

    Read the article

  • Unable to attach "AdventureWorks2008" Sample Database to a named Instance in SQL Server 2008

    - by uzorick
    First of all "Northwind" and "AdventureWorksDW2008" databases attached without problem, but "AdventureWorks2008" fails with the following error. // Msg 5120, Level 16, State 105, Line 1 Unable to open the physical file "C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\Documents". Operating system error 2: "2(The system cannot find the file specified.)". Msg 5105, Level 16, State 14, Line 1 A file activation error occurred. The physical file name 'C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\Documents' may be incorrect. Diagnose and correct additional errors, and retry the operation. Msg 1813, Level 16, State 2, Line 1 Could not open new database 'AdventureWorks2008'. CREATE DATABASE is aborted. // PS: I did not use the default database instance "MSSQLSERVER" during install, so Where is it finding this path "C:...\MSSQL10.MSSQLSERVER...\Documents"?

    Read the article

  • java.sql.SQLException: SQL logic error or missing database

    - by Sunil Kumar Sahoo
    Hi All, I ahve created database connection with SQLite using JDBC in java. My sql statements execute properly. But sometimes I get the following error while i use conn.commit() java.sql.SQLException: SQL logic error or missing database Can anyone please help me how to avoid this type of problem. Can anyone give me better approach of calling JDBC programs Class.forName("org.sqlite.JDBC"); conn = DriverManager.getConnection("jdbc:sqlite:/home/Data/database.db3"); conn.setAutoCommit(false); String query = "Update Chits set BlockedForChit = 0 where ServerChitID = '" + serverChitId + "' AND ChitGatewayID = '" + chitGatewayId + "'"; Statement stmt = null; try { stmt.execute(query); conn.commit(); stmt.close(); stmt = null; } Thanks Sunil Kumar Sahoo

    Read the article

  • java.sql.SQLException: SQL logic error or missing database, SQLite, JDBC

    - by Sunil Kumar Sahoo
    Hi All, I ahve created database connection with SQLite using JDBC in java. My sql statements execute properly. But sometimes I get the following error while i use conn.commit() java.sql.SQLException: SQL logic error or missing database Can anyone please help me how to avoid this type of problem. Can anyone give me better approach of calling JDBC programs Class.forName("org.sqlite.JDBC"); conn = DriverManager.getConnection("jdbc:sqlite:/home/Data/database.db3"); conn.setAutoCommit(false); String query = "Update Chits set BlockedForChit = 0 where ServerChitID = '" + serverChitId + "' AND ChitGatewayID = '" + chitGatewayId + "'"; Statement stmt = conn.createStatement(); try { stmt.execute(query); conn.commit(); stmt.close(); stmt = null; } Thanks Sunil Kumar Sahoo

    Read the article

  • Android: How to copy a SQLite database from one application to another

    - by mahdaeng
    I have a lite version of an application that uses a SQLite database. I want to copy that database over to the full version of the application when the user installs the full version. I have written some code to perform the file copy, but the lite database file always comes up as unreadable. The file is there and I can point to it, but I can't read it to perform the copy. In the Android documentation, we read: You can save files directly on the device's internal storage. By default, files saved to the internal storage are private to your application and other applications cannot access them (nor can the user). Note the words, "by default". Is there a way that I can override that default and make the SQLite file readable by my other application? Thank you.

    Read the article

  • Studying MySQL, SQLite source code to learn about RDBMS implementation

    - by Yang
    I know implementing database is a huge topic, but I want to have a basic understanding of how database systems work (e.g. memory management, binary tree, transaction, sql parsing, multi-threading, partitions, etc) by investigating the source code of the database. Since there are a few already proven very robust open source databases like mysql, sqlite and so on. However, the code are very complicated and I have no clue where to start. Also I find that the old school database textbooks are only explaining the theory, not the implementation details. Can anyone suggest how I should get started and if there are any books that emphasis on the technology and techniques of building dbms used in modern database industry?

    Read the article

  • How do you fix TSD02016 error in Database

    - by Keith Sirmons
    Howdy, I have a database I am using the Visual Studio 2010 Database Project tool vsdbcmd.exe to create a schema from. vsdbcmd /a:Import /dsp:Sql /model:"Database" /cs:"Server=SqlServer; Initial Catalog=DatabaseName; Integrated Security=SSPI;" The tool is reporting an error: Error TSD02016, Gen-259 (12,50) The column name is not valid. No table name was specified. How would I go about pinpointing where this error is originating? I have found one resource on the internet (http://social.msdn.microsoft.com....) that points to a possibility of a keyword used incorrectly, but the error messages are not the same. What is Gen-259? Thank you, Keith

    Read the article

  • sql database connection on remote server

    - by arti pathak
    i create my web site on asp.net and i create database in sql using inbuilt it in visual studio i use step to create database 1.right click on solution explorer then add newSqldatabase then ok then if i connect it by coding then it will work on my local PC but actuall i am making website so i want to store it on my web server then if i load databse file (.mdf) file in my web server where my all files are loaded then it is showing it error "A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)" so please help me and send me all step how i create database and what coding i use to connect on remote server....... Thank You......

    Read the article

  • Convert a Mysql database from latin to UTF-8

    - by Matthieu
    I am converting a website from ISO to UTF-8, so I need to convert the Mysql database too. On internet, I read various solutions, I don't know wich one to choose. Do I really need to convert my varchar columns to binary, then to utf8 like that : ALTER TABLE t MODIFY col BINARY(150); ALTER TABLE t MODIFY col CHAR(150) CHARACTER SET utf8; This is long to do that for each column, of each table, of each database. I have 10 database, wich 20 tables each, wich around 2 - 3 varchar colums (2 queries each column), this gives me around 1000 queries to write ! How come ? How to do ?

    Read the article

  • Handling database failover for Rails applications on FreeBSD

    - by bianster
    I'm working on implementing database (Postgresql) failover for a Rails app that runs with Passenger/FreeBSD. Due to certain constraints regarding the server OS, it's necessary to continue using FreeBSD (as opposed to say, Ubuntu). I'm finding it to be quite a challenge to have failover handled within the Rails application, by way of a customised database adapter due to the fact that this application will be load-balanced between several webservers, and the multiple Rails processes that Passenger spawned in each webserver. I previously looked at setting up Pacemaker/Corosync to manage database server failover on a common IP but unfortunately I wasn't able to get past building the packages on FreeBSD. It does work rather well on Ubuntu 10.04 but I'm not likely to be able to use Ubuntu due to the OS constraints. I'm considering a custom witness daemon that simply pings the primary DB server, and this witness daemon switches all the webservers to the standby DB server when the primary becomes uncontactable (permanently/temporarily), to avoid split-brain. Though I would really like to know if there is a way to get Pacemaker(or something similar) to do the switch on FreeBSD.

    Read the article

  • Godaddy ASPNET membership database woes -- PLEASE HELP

    - by The_AlienCoder
    Ok heres the deal I purchased a windows shared hosting account on godaddy that came with 2 MSSQL databases. I setup one to hold my site data and the other installed aspnet membership schema to store site members. The site works perfectly even displaying data from the 1st database. However when I try to login or register I get this nasty error Exception Details: System.Configuration.Provider.ProviderException: The SSE Provider did not find the database file specified in the connection string. At the configured trust level (below High trust level), the SSE provider can not automatically create the database file. Ive gone through my web.config and theres nothing wrong with my 2 connection strings. It seems godaddy has a problem with using 2 mssql databases simultaneously when 1 is for membership. Googling just finds a whole lot of people with the same problem -- but no solutions! Does anyone know a solution or a workaround?...or has anyone ever successfully used 2 databases(1 for membership) on godaddy?

    Read the article

< Previous Page | 158 159 160 161 162 163 164 165 166 167 168 169  | Next Page >