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Java Database Q&A
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25.MS Access
39.stored procedure
Java Database Q&A » SQL » data 

1. Even easier Java/SQL data transfer needed

So, I'm using jdbc to talk to a MySQL DB. For many a table and for many queries/views, I have created one class which encapsulates one row of the table ...

2. Best performing way to guarantee data consistency between concurrent web service calls?

Multiple clients are concurrently accessing a JAX-JWS webservice running on Glassfish or some other application server. Persistence is provided by something like Hibernate or OpenJPA. Database is Microsoft SQL Server 2005. The ...

3. Guaranteed cache hits when retrieving data

Problem setting

  1. Entities arrive for processing and are taken through a series of steps which operate on those entities and possibly on other, related, entities and generate some results;
  2. Some of the entities ...

4. What will happen if records are deleted during the data retrieving process?

Let's say I have 6 records, and I set the fetch size as 2.

[Id] [Name]
 11   A   <-- 1st fetch, start from 1 position
 21   ...

5. Store data(strings) in database

I have a Vector < String >. Now i want to store those Strings in database. But i have one "but"! The program user mustn't install anything else except J2RE, he ...

6. Group Aggregated Data better in SQL or in CODE (in terms of performance)

I would like to ask for opinion on making aggregate data by concatenating strings. If I have a column aggregate but I want to concatenate then in an aggregate column, which ...

7. What are the best practices to separate data from users

For a customer we where developing a big application that where open to all users if you will, meaning, all users could see each others data. Now suddenly the customer is saying ...

8. Why I have to redefine data stucture twice? should I?

Choosing carefuly datatypes, finally a complex Class is created, then using a HashMap, those first Class objects get mapped with a key. and now I can create thousands and access them, add, delete, ...

9. Guidelines for building Data Acces Layer with SQL

There are a lot of information on building DAL with ORM ((N)Hibernate, LINQ to SQL). But I can't find any recomendations on doing it with plain SQL or mixed (ORM + ...

10. What is the best programming language for operationalizing research questions with large data sets?

I have completed my graduate public policy program but it was not at all tech heavy - some economics and econometrics but not requiring any CS knowledge. A good portion of ...

11. Lightweight Java solution for creating views on large data

I need to create a Java (J2EE) application that allows people to generate "views" on large CSV/TSV tabular data. Views might include things like: pagination through the data, sorting, filtering, pivoting ...

12. Java - Retrieving data from database based on user logged in

If say, I logged in to my own website, I want to return data that I have submitted to the database. Problem is, how do I query the database to return ...

13. error on updation of data

when i change the data of some field and click on update button it showing record not found message its a total o/p init: Deleting: F:\sanskar1\build\ deps-jar: Updating property file: F:\sanskar1\build\ compile: run: Driver loaded Hi SeniorPerson: dude RegistrationNo: 36 NativePlace: nasik Kul: balaji Gotra: fg KulSwami: ...

14. How do I generate hierarchical test sql data for a transitive closure?

I've got a transitive closure table that represents my tree, and I want to create a test hierarchy for it. A four node tree would look like this:

Tree: (implied by transitive closure)
A ...

15. in freemarker while reading the data from the controller it is not displaying the exact value it is doing rounging why?

this is my code:-fixed ,variable salary are store in data base like:14.40 and 300.70 while displaying these value in ui it display like fixed ,variable salary 14,301 it is doing round method. ...

16. Java API for SQL Data Definition Language

Before I write one, is there a Java API for manipulating a database. Like an object orientated wrapper around java.sql.DatabaseMetaData, with support for things like Schema.createTable(name, columns)? Obviously correct SQL statements should ...

17. java datechooser

I have two tables made in access. One table (Owner) contains: ownerID, name which owner has. Second table (Cars) contains: CarId, carname, year, ownerID they has relations between carid In ...

18. Commercial Java application data storage

I have been developing small applications and widgets in Java now for some time and have been using XML and binary files to store the data that I am using. Currently, ...

19. Filter data in SQL or in Java?

What is the general guideline/rule for filtering data? I am accustomed to seeing filters in an SQL statement in the WHERE clause, although there are occasions that filters introduce complexity to ...

20. Solr DataImportHandler logs into SQL but never fetches any data

Hi I have copied my Solr config from a working windows server to a new one, and it can't seem to run an import. They're both using win server 2008 and SQL ...

21. Java Setters and Getters Data into the Java Database

I am working on a stand-alone Java project (not Java EE), I am currently learning JDBC, I am creating a database where it contains Employee information, such as Personal information, Contact ...

22. SQL View Data

23. Retrieving Decimal data from SQL

24. java.sql.SQLException: Io exception: End of TNS data channel

hi, I am experiencing the same problem, as it seems. Until yesterday, everything worked fine. All queries returned a result in an acceptable amount of time. Then I have added some new queries (which are only slitely modified versions of the others) and these run a long time until they might throw this error. Exactly the same queries return _at once_ ...

26. SQL Data Types

27. java.sql.SQLException: ORA-03115: unsupported network datatype or representation

Hi, I trying to retrieve the results from a cursor in java and am getting the following error. java.sql.SQLException: ORA-03115: unsupported network datatype or representation at oracle.jdbc.dbaccess.DBError.throwSqlException( at oracle.jdbc.ttc7.TTIoer.processError( at oracle.jdbc.ttc7.v8Odscrarr.receive( at oracle.jdbc.ttc7.TTC7Protocol.describe( at oracle.jdbc.driver.OracleStatement.( at oracle.jdbc.driver.OracleStatement.getCursorValue( at oracle.jdbc.driver.OracleStatement.getObjectValue( at oracle.jdbc.driver.OracleStatement.getObjectValue( at oracle.jdbc.driver.OracleCallableStatement.getObject( at server.SessionManager.createSession( at server.MMServer.doPost( at server.MMServer.doGet( at javax.servlet.http.HttpServlet.service( at javax.servlet.http.HttpServlet.service( at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter( at org.apache.catalina.core.ApplicationFilterChain.doFilter( at org.apache.catalina.core.StandardWrapperValve.invoke( at org.apache.catalina.core.StandardValveContext.invokeNext( ...

29. java.sql.DataTruncation: Data truncation

Hi, I've been using jTDS as my JDBC driver for SQLServer 2000. I have SP4 installed. Before, I was having a similar problem when storing pictures in the database, I searched but to no luck... Didn't find an answer. I tried to store only the image name(so I won't be dealing with binary data anymore)... I thought I solved it, but ...

30. java.sql.SQLException: no data found

Thanks Vallidevi. You was completle write. Stu derby, you are write also. On the first version of the application, I was using the native MySQL driver. There was no problem with the posted code. When I changed de driver for sun.jdbc.odbc.JdbcOdbcDriver, this problem started to happen (not because its a bad driver, off course; it simply dosent support what I was ...

32. java.sql.SQLException: ORA-03115: unsupported network datatype or representation

Hi All, I am trying to execute a select * query on a table having a column of type TIMESTAMP. When I am executing this query from Java code using Oracle thin driver (oracle.jdbc.driver.OracleDriver), I am getting this error: java.sql.SQLException: ORA-03115: unsupported network datatype or representation at oracle.jdbc.dbaccess.DBError.throwSqlException( at oracle.jdbc.ttc7.TTIoer.processError( at oracle.jdbc.ttc7.v8Odscrarr.receive( at oracle.jdbc.ttc7.TTC7Protocol.describe( at oracle.jdbc.ttc7.TTC7Protocol.parseExecuteDescribe( at oracle.jdbc.driver.OracleStatement.doExecuteQuery( at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout( at ...

33. excel, sql, and java NO DATA FOUND

So, i found out that the problem is with microsoft excel and not my code. To cut a long story short, excel gets very confused when its fields contain both strings and numbers. There are two soultions to the problem, but neither is practical. (retyping the whole sheet ! for example) There's more at (not hard to find)

34. SQL duplicate data into a new PK

Hi. I'm not sure if I can ask this question here but I guess I'm going to any way. It's basically a procedure I'm doing in MySQL for my program. I'd like to copy rows in a table but I need to change the values in a certain field as they need to be unique. I get the unique keys from ...

35. SQL Error: string data, right truncation

I'm stumped. This (newbie) routine reads data from one database into a RecordSet, and then takes three fields from each record in the set and inserts them into another SQL database. All the fields in the 2nd database are substantially larger than the fields in the source database. It reads 2,290 records into the RecordSet, and then writes the first 359 ...

36. java.sql.SQLException: No data read

38. java.sql.sqlexception data size bigger than max size for this type

Hello ranchers. I'm developing an application using Apache Turbine + Torque and Oracle 10g for my DB and am encountering this error: java.sql.sqlexception data size bigger than max size for this type. I've searched it in Google and everyone says that you should use a BLOB type instead of a LONG RAW, but my problem is that I'm using BLOB to ...

39. java.sql.SQLException: No more data to read from socket

Hi All, i am using connection pooling, code is : conn=RMSDatabaseManager.getInstance().getConnection("voms"); requestXml=XMLType.createXML(conn,sessionValidationXml); cstmt = conn.prepareCall("{? = call STORED_PROCEDURE(?)}"); cstmt.registerOutParameter(1, oracle.jdbc.OracleTypes.OPAQUE,"SYS.XMLTYPE"); cstmt.setObject(2, requestXml); System.out.println("START OPERATION"); cstmt.execute(); System.out.println("COMPLETED"); and getting this error.. I DON'T HAVE ANY IDEA OF THIS EXCEPTION PLEASE HELP ME. CAN WE CONTROL IN CONNECTION POOLING, IF YES TELL ME HOW ? java.sql.SQLException: No more data to read from socket ...

41. JDBC:SQL Exception no data found

import*; import*; import java.util.*; import java.sql.*; public class ExcelReader { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub try { Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); String dsnName = "ID"; String str = "jdbcdbc:"+dsnName; Connection con = DriverManager.getConnection(str); Statement stmt = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_READ_ONLY); ResultSet rs = stmt.executeQuery("Select * from [sheet1$]"); ResultSetMetaData rsmd = rs.getMetaData(); rs.last(); int row_count ...

42. Get Data from SQL to my java program

43. Processing large Set of SQL Data and MVC

What is the best way to retrieve large sets of data from a database? One option I tried was to create a Method within the Model Class (MVC) and store the raw data within a Map and pass it to the Controller Class to process it, but this quickly results in OutOfMemory Exception. Another option, is to process the raw data ...

44. Inconsistent datatype - SQL and JAVA

Hi, I am passsing an array of objects to oracle stored proc,, stored proc is declared like this,, CREATE OR REPLACE TYPE v_rec_test AS OBJECT ( name VARCHAR(5)); / CREATE OR REPLACE TYPE v_arr_test IS TABLE OF v_rec_test; / PROCEDURE testForObj(p_arr_test IN v_arr_test) AS BEGIN INSERT INTO TEMP_ACCOUNT VALUES ('SU','MIT'); COMMIT; FOR i IN 1 .. p_arr_test.count LOOP -- DBMS_OUTPUT.PUT_LINE('RECORD NAME: ...

45. SQLException:java.sql.Exception:Data type mismatch in criteria expresion

it seens i should put a short version of the program i'm working on, so here is the code: Java Code: mport java.sql.*; public class conectare_db { public static void main(String args[]) throws SQLException { int i; Connection con = null; System.out.println("Give the number:"); java.util.Scanner in = new java.util.Scanner(; i = in.nextInt(); in.close(); String url = "jdbc:odbc:Facultate"; try { Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); } ...

46. help!comparing input with sql data.

i am doing logging in.i want to check user input password with the password stored by the to i do so?i tried this but keep return success = true public static boolean loginUser(String inUserName, String inPwd){ boolean success = false; ResultSet rs=null; DBController db = new DBController(); db.setUp("userDatabase"); String dbQuery = "SELECT Pwd FROM USER WHERE USERNAME ='" + inUserName ...

47. sql: store data in list or constantly ask the database?

Hello, i got to a point where im intergrating databases in my java application. Im using postgresql, all is fine, i know how it works and what i have todo.. but now im asking myself this: scenario: I will have lots of worker threads (100+) which all have to do simple tasks, but those simple tasks require data, and you guessed ...

49. sql error:data type mismatch

50. java.sql.SQLException: No data found error

51. SQL Data Migration Specialist needed

The SQL Data Migration Specialist plays a crucial role in converting new Client's data onto Brilig's service platforms. We are looking for a talented and energetic full-time freelance programmer to work both remotely and onsite at our midtown Manhattan location. The Specialist will work with our clients' technical teams to determine the optimal formats and requirements to create files for subsequent ...

52. how do i overrride my data in SQL

try { con = getConnection(); ps = con.prepareStatement(sql); ps.setString(1, emp.getName()); ps.setString(2, emp.getAddress()); ps.setString(3, emp.getEmail()); ps.setString(4, emp.getMobilePhone()); ps.setString(5, emp.getPassword()); ps.setInt(5, emp.getId()); ps.executeUpdate(); } catch (SQLException e) { throw new LeaveException(e.getMessage()); } finally { try { con.close(); }catch(Exception ex){ throw new LeaveException(ex.getMessage()); } } } However, I want to create another page whereby user can update their own information. These information will be ...

53. how to cache the sql data  | Contact Us | Privacy Policy
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