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• Named ports in windows!

  - by Jay

  I wonder how stuff like this works in windows (xp and other that have telnet): Start-> Run -> cmd -> telnet <xyz.com> http Start-> Run -> cmd -> telnet <xyz.com> pop3 Start-> Run -> cmd -> telnet <xyz.com> smtp Are these "named" ports? Only windows knows that it has to substitute port numbers coz these are standard ports? Is there way I could create such a named port on windows? I would like something like this : telnet <xyz.com> oracle to translate to telnet <xyz.com> 1521

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• Where do you get ArcGIS development questions answered?

  - by nw

  Where do you have the most success getting your ArcGIS development questions answered? ESRI forums? Stack Overflow? Google? Mailing lists? Blog posts? ESRI documentation? I can usually get answers to my ASP.NET/Oracle/JavaScript/C# questions in short order, but questions about ESRI products and APIs are a different matter. Posts founder in the forums, Google returns void, etc. I'm sure this is not uncommon for niche commercial products, but frustrating nevertheless. What works for you? Please share.

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• String comparison with a collation in javascript

  - by fsb

  I use jquery.autocomplete, which uses a javascript regexp to highlight substrings in the list of suggestions that match the autocomplete key string. So if the use types "Beat" and one of the autocomplete suggestions the server returns is "The Beatles" then plugin displays that suggestion as "The Beatles". I'm trying to think of ways to make this work with string matching that isn't sensitive to accents, diacriticals and the rest. So if the user typed "Huske" and the server suggested "Hüsker Dü" then this would be displayed as "Hüsker Dü". The principle is the same as string comparison with specified collations such as in MySql or ICU, or with Oracle's sorts. In SphinxSearch a charset_table works for this. A collation such as utf8_general_ci would be ideal for my purposes.

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• Postgresql - one database for everyone, or one-database per customer

  - by user337876

  I'm working on a web-based business application where each customer will need to have their own data (think basecamphq.com type model) For scalability and ease-of-upgrades, I'd prefer to have a single database where each customer gets a filtered version of the data. The problem is how to guarantee that they stay sandboxed to their own data. Trying to enforce it in code seems like a disaster waiting to happen. I know Oracle has a way to append a where clause to every query based on a login id, but does Postgresql have anything similar? If not, is there a different design pattern I could use (like creating a view of each table for each customer that filters)? Worse case scenario, what is the performance/memory overhead of having 1000 100M databases vs having a single 1Tb database? I will need to provide backup/restore functionality on a per-customer basis which is dead-simple on a single database but quite a bit trickier if they are sharing the database with other customers.

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• Is there any specific available method in jsp/Servlet API which tell you from which page the request

  - by anubhavjain86

  Hi, I have been working in Oracle iStore from past 4 months and i have been managing the application without any IDE (basically doing all the chores on notepad only because application has been designed poorly and no IDE can support it). Since the coding is done on simple notepad files it is very hard to find out the bugs in the application. I am facing a problem that i have not idea which jsp page redirect the control to which jsp page. For instance, there are two jsp pages A.jsp and other is B.jsp. Now the browser is currently displaying A.jsp. When the user click on submit button (available on A.jsp) the form submits and redirects the control to B.jsp. Now my problem is that i know i am coming on B.jsp but, i don't know that A.jsp is redirecting the control to B.jsp. Is there an method available in Servlet API which tells Which jsp is redirecting the control to B.jsp? Sorry for making you read so much long story :( appreciate ur help in advance Best Regards Anubhav

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• When will NAnt reach version 1.0

  - by sundar venugopal

  I like Nant very much. I do a lot of scripting with NAnt. It is a great little tool. Since NAnt is pre 1.0, when problems occur, I often think if that it is a problem with NAnt itself, but this is not always the case. One funny example: After running the oracle scripts I parsed the log output to make sure there was no problem. I was testing this with a small log file and it was fine. I used the task to load the file contents to a string property and used a regex to search for errors. When I used this script for a large log file, I stopped getting the "build failed" message at the bottom, because I was printing the error messages. Because the "build failed" was hiding at the top, I thought NAnt crashed, but it worked fine. It would be better for NAnt to have a 1.0 release. Any reasons why not?

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• Providing dynamic data to webpage

  - by Marius

  Hi, I have a web page that displays dynamic data which changes every 2 seconds. Data is selected from various data sources including Oracle. Currently, the page reloads every 10 seconds and runs a PHP script which retrieves the data and displays the page. I have other pages that gives a different view on the same data. This means the same query is run again for them as well. If I have 4 of these pages with 10 concurrent users each, suddenly the data retrieval happens 40 times every 10 seconds, obviously not ideal. I have some ideas on how to improve this situation, but I thought I would ask from some ideas from other experts that might have come across a similar situation. I'm not bound to PHP, and my server is on a Linux platform. Regards Marius

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• Providing dynamic data to webpage

  - by Marius

  Hi, I have a web page that displays dynamic data which changes every 2 seconds. Data is selected from various data sources including Oracle. Currently, the page reloads every 10 seconds and runs a PHP script which retrieves the data and displays the page. I have other pages that gives a different view on the same data. This means the same query is run again for them as well. If I have 4 of these pages with 10 concurrent users each, suddenly the data retrieval happens 40 times every 10 seconds, obviously not ideal. I have some ideas on how to improve this situation, but I thought I would ask from some ideas from other experts that might have come across a similar situation. I'm not bound to PHP, and my server is on a Linux platform. Regards Marius

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• Performance analysis strategies

  - by Bernd

  I am assigned to a performance-tuning-debugging-troubleshooting task. Scenario: a multi-application environment running on several networked machines using databases. OS is Unix, DB is Oracle. Business logic is implemented across applications using synchronous/asynchronous communication. Applications are multi-user with several hundred call center users at peak time. User interfaces are web-based. Applications are third party, I can get access to developers and source code. I only have the production system and a functional test environment, no load test environment. Problem: bad performance! I need fast results. Management is going crazy. I got symptom examples like these: user interface actions taking minutes to complete. Seaching for a customer usually takes 6 seconds but an immediate subsequent search with same parameters may take 6 minutes. What would be your strategy for finding root causes?

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• Good books on Sybase ASE 15?

  - by Ilya Kochetov

  We need to get some good books on Sybase ASE 15 for our developers. The people in the team have previous experience with different SQL flavors (MS SQL, MySQL, Informix and Oracle) but no one worked with Sybase before. Therefore I am looking for two kinds of books: Book for developers on how to use Sybase for queries,sprocs, views etc. Has to be a book for professionals and not something like 'learn SQL in 21 day' Book for the DB administrator on how to maintain the database. This could be on any level and a dummy guide would not go wrong :) Thank you

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• Connecting to SQL Server with Visual Studio Express Editions

  - by tlianza

  I find it odd that in Visual C# 2008 Express edition, when you use the database explorer, your options are: 1) Microsoft Access 2) SQL Server Compact 3.5, and 3) SQL Server Database File. BUT if you use Visual Web Developer 2008 Express, you can connect to a regular SQL Server, Oracle, ODBC, etc. For people developing command-line or other C# apps that need to talk to a SQL Server database, do you really need to build your LINQ/Data Access code with one IDE (Visual Web Developer) and your program in another (Visual C#)? It's not a hard workaround, but it seems weird. If Microsoft wanted to force you to upgrade to Visual Studio to connect to SQL Server, why would they include that feature in one of their free IDEs but not the other? I feel like I might be missing something (like how to do it all in Visual C#). Thanks! Tom

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• Seeking tuturial: introduction to ODBC with Delphi

  - by mawg

  I have a lot of embedded C/C++/Ada experience and an outdated smattering of Delphi plus some database stuff. Now I have to implement an app in Delphi which can manipulate MySql, Oracle, maybe MS Acess. In short, I need ODBC. I need to programatically created a database, define its structure and populate its contents, then later query its existence and programatically search. I would prefer not to use 3rd party components, unless there is a compelling reason to do so (performance ought not to be an issue for the app, it won't have much data or be run often, at least not in v1.0) . Can anyone point me at a tutorial which can get me up to speed? Thanks

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• SQL UPDATE order of evaluation

  - by pilcrow

  What is the order of evaluation in the following query: UPDATE tbl SET q = q + 1, p = q; That is, will "tbl"."p" be set to q or q + 1? Is order of evaluation here governed by SQL standard? Thanks. UPDATE After considering Migs' answer, I ran some tests on all DBs I could find. While I don't know what the standard says, implementations vary. Given CREATE TABLE tbl (p INT NOT NULL, q INT NOT NULL); INSERT INTO tbl VALUES (1, 5); -- p := 1, q := 5 UPDATE tbl SET q = q + 1, p = q; I found the values of "p" and "q" were: database p q -----------------+---+--- Firebird 2.1.3 | 6 | 6 InterBase 2009 | 5 | 6 MySQL 5.0.77 | 6 | 6 Oracle XE (10g) | 5 | 6 PostgreSQL 8.4.2 | 5 | 6

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• How to obtain an scroll_insensitive resultSet from a callableStatement in Java JDBC?

  - by rafa colunga

  Hi, I have a stored procedure in an Oracle 10g database, in my java code, i call it with: CallableStatement cs = bdr.prepareCall("Begin ADMBAS01.pck_basilea_reportes.cargar_reporte(?,?,?,?,?); END;", ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY); cs.setInt(1, this.reportNumber); cs.registerOutParameter(2, OracleTypes.CURSOR); cs.registerOutParameter(3, OracleTypes.INTEGER); cs.registerOutParameter(4, OracleTypes.VARCHAR); cs.setDate(5, new java.sql.Date(this.fecha1.getTime())); cs.execute(); ResultSet rs = (ResultSet)cs.getObject(2); i do obtain an ResultSet with correct records in it, but when i try an "scroll_insensitive - only" operation, (like absolute(1) ). I keep getting an SQLException stating that it doesn't work on FORWARD only resultSet. So how can i obtain this ResultSet with scroll_insensitive capabilites? Thanks in Advance.

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• Accessing the Custom Object Return type from ojdbc6 JDBC Thin Drivers

  - by Andrew Harmel-Law

  I'm writing some JDBC code which calls a Oracle 11g PL/SQL procdedure which has a Custom Object return type. I can get the code to call the procedure, but how do I access the returned Custom Object to obtain it's contained values?. An example of my code calling the procedure is below: PLSQL Code: Procedure GetDataSummary (p_my_key IN KEYS.MY_KEY%TYPE, p_recordset OUT data_summary_tab, p_status OUT VARCHAR2); Java Code: String query = "begin manageroleviewdata.getdatasummary(?, ?, ?); end;"); CallableStatement stmt = conn.prepareCall(query); stmt.setInt(1, 83); stmt.registerOutParameter(2, OracleTypes.ARRAY, "DATA_SUMMARY_TAB"); stmt.registerOutParameter(3, OracleTypes.VARCHAR); stmt.execute(stmt); How do I get the result back fron this?

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• insert many records using ADO

  - by Salvador

  i am looking the fastest way to insert many records at once (+1000) to an table using ADO. option 1) using insert commands and parameters ADODataSet1.CommandText:='INSERT INTO .....'; ADODataSet1.Parameters.CreateParameter('myparam',ftString,pdInput,12,''); ADODataSet1.Open; option 2) using TAdoTable AdoTable1.Insert; AdoTable1.FieldByName('myfield').Value:=myvale; //.. //.. //.. AdoTable1.FieldByName('myfieldN').value:=myvalueN; AdoTable1.Post; option 3) any suggestions? i am using delphi 7, ADO and ORACLE. thanks in advance.

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• Using Spring's KeyHolder with programmatically-generated primary keys

  - by smayers81

  Hello, I am using Spring's NamedParameterJdbcTemplate to perform an insert into a table. The table uses a NEXTVAL on a sequence to obtain the primary key. I then want this generated ID to be passed back to me. I am using Spring's KeyHolder implementation like this: KeyHolder key = new GeneratedKeyHolder(); jdbcTemplate.update(Constants.INSERT_ORDER_STATEMENT, params, key); However, when I run this statement, I am getting: org.springframework.dao.DataRetrievalFailureException: The generated key is not of a supported numeric type. Unable to cast [oracle.sql.ROWID] to [java.lang.Number] at org.springframework.jdbc.support.GeneratedKeyHolder.getKey(GeneratedKeyHolder.java:73) Any ideas what I am missing?

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• Convert BLOB to Jpg using C#

  - by TGuimond

  Hello, I am currently developing a web application that receives data from an on-site oracle database. The database developers have developed some web-services that I am able to call and send/receive data to and from the the database. When I want to display an image the method returns the image in BLOB format. My question is: what is the best way to convert BLOB to .jpg or .bmp so I can display the image correctly? If someone could point me in the right direction that would be great! Cheers, Tristan

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• Extending windows based installer to other Operating Systems

  - by Pia

  I have build an installer using NSIS. And now I want to extend it to Solaris and Linux thorugh WINE. But I wanna know few things here- Is WINE flavour dependent? I mean are there different packages for different Linux versions? Whats if my Installer creates some SQL or Oracle database? Will this feature be also supported by WINE? Is there any tool which can be used to build installer which is platform independent?

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• How does Alpha Five Version 10 Rate for Web App Development

  - by Gary B2312321321

  I came across this RDMS via the advert on stackoverflow. Seems to be in the vein of MS Access / Filemaker / Apex database development tools but focused on web based applications. It quotes rave reviews from EWeek and a favourable mention from Dr Dobbs regarding its ability to create AJAX web applications without coding. The Eweek review, apparently written by an ASP.NET programmer, goes on to proclaim the ease at which apps can be extended using the inbuilt XBasic language and how custom javascript can easily be added without wading through code. Has anyone here built a web app with Alpha 5? Does anyone have comments on the development process, the speed of it or limitations they encountered along the way? To me it seems Oracle APEX comes closest to the feature set, has anyone programmed in both and have any comments?

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• Access to Apache::DBI from DBI

  - by hpavc

  Is it possible to access a Apache::DBI database handle from a perl script (that isn't running under mod_perl). What I am looking for is database pooling for my perl scripts, I have a fair number of database sources (oracle/mysql) and a growing number of scripts. Some ideas like SQLRelay, using Oracle10XE with database links and pooling, and or convert all scripts to SOAP calls, etc are becoming more and more viable. But if there was a mechanism for reusing Apache::DBI I could fight this a bit. I have no non-perl requirements, so we don't have a php/jdbc implementation or similar to deal with. Thanks

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• Data import wizard library for .Net?

  - by Phil

  Does anyone know of a 3rd party data import wizard that can be embedded into applications? It should import from Excel, Access, SQLServer, csv, tab-separated flat file, XML, Oracle etc. We have a fixed data structure within our application and the user should be able to configure the wizard to match his/her import fields to our own data structure. The wizard should be a library of sorts – preferably a .Net type library. We may want to have it both web-based and desktop based (hence we may need an ASP.Net controls version and a Winforms version). We may also want integration with WPF and Silverlight. If there’s no UI wizard available, does anyone know of a non-UI library that supports easily configurable import from many, many different datasources?

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• Installing JavaFX 2.0 in Eclipse Juno for Mac

  - by Josh

  I'm running Mac OS X 10.6.x (Snow Leopard) right now, so I'm pretty sure that there could be some issues with supported systems, but I'm trying to install JavaFX 2.0 (or 2.1.x) in Eclipse Juno for Java EE (version 3.8). I have already installed the e(fx)clipse plugin, but I'm not sure if I'm downloading the right JavaFX .zip file from the Oracle website. I downloaded the JavaFX 2.2 beta release because it seemed to be the only release available for OS X, but I could be wrong. Once I download this archive, I'm not exactly what to do with it/where to place it so that Eclipse recognizes it as the JavaFX 2.2 SDK. I know that I have to go into preferences and set the location of the SDK file, but there doesn't seem to be any selectable .jar file or folder to set it to. Am I doing something wrong here? Any help is appreciated. Edit: I worked around the issue by setting the SDK location to the location of the downloaded JavaFX 2.2 SDK in the JavaFX section in the preferences tree.

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• How to ignore/prevent javadoc folder from validation during Eclipse Build?

  - by h2g2java

  In my war is a huge javadoc folder. There is no point in validating it since javadocs are produced by Sun(Oracle) javadoc utility. I have forgotten how I did it the last time. I need to tell Eclipse build not to validate that particular folder. Reasons why I need it: 1. the html produced by Sun javadoc generation utility does not meet the requirement that Eclipse uses - there is a bug report in Eclipse but Eclipse responds that Sun javadoc generator non-compliance is not their fault and that Eclipse intends to stick to their strict compliance. Which results in lots of html errors listed in the problems tab. 2. the javadoc folder is a remote link and high activity on that link is using up my cpu resource, and because it is a link to a remote location, that cpu high activity is sustained for long time until it finishes scanning the whole 35MB javadocs. Thanks - need help.

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• Adjust SQL query to DB2

  - by Guy Roth

  Part of a complex query that our app is running contains the lines: ...(inner query) SELECT ... NULL as column_A, NULL as column_B, ... FROM ... This syntax of creating columns with null values is not allowed in DB2 altough it is totally OK in MSSQL and Oracle DBs. Technically I can change it to: '' as column_A, '' as column_B, But this doesn't have exactly the same meaning and can damage our calculation results. How can I create columns with null values in DB2 using other syntax??

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