error « Operation « Java Database Q&A





1. Avoiding CheckStyle magic number errors in JDBC queries    stackoverflow.com

I am working on a group project for class and we are trying out CheckStyle. I am fairly comfortable with Java but have never touched JDBC or done any database work before ...

2. Error while updating in the database    stackoverflow.com

Iam updating the database by executing the SQl queries through executeUpdate() method of PreparedStatement class. How will i come to know if there was an error in the last update query??

3. How to show a error message if the data is already inserted in the database in java?    stackoverflow.com

Please let me know the answer . I want checks duplication and sends back a message.

4. Error in insert into    coderanch.com

5. Why this OverFlow error during updating?    coderanch.com

import db.*; import java.sql.Statement; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.Connection; import java.sql.Timestamp; public class SetAppDate { public SetAppDate() {} public synchronized int setDate() { int ret = 0; Connection conn = null; PreparedStatement p_st = null; try { DBConnection dbc = new DBConnection(); conn = dbc.connect(); Timestamp sdt = new Timestamp(1980,1,1,0,0,0,0); String data_q = "update app_detail set cd=?"; p_st = conn.prepareStatement(data_q); ...

7. Error in Query    coderanch.com

8. update error    coderanch.com

9. insert query working in toad and giving error in jdbc    coderanch.com

thanks srini... but i have tried that also. I printed the query on console and from there copied it back to the toad and it worked. So the query works on toad, i copy it from there into my java code it flops, and from java code or console i copy it back on toad and it works again. This is ...





10. MS Acces Error Could not update; currently locked by user    coderanch.com

Hi All, I am getting the below exception, when I try to update a record in MS-Access database. Its a desktop application that does the update in MS-Access. java.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver] Could not update; currently locked by user 'admin' on machine 'ZCHQ_B2B'. at sun.jdbc.odbc.JdbcOdbc.createSQLException(Unknown Source) at sun.jdbc.odbc.JdbcOdbc.standardError(Unknown Source) at sun.jdbc.odbc.JdbcOdbc.SQLExecDirect(Unknown Source) at sun.jdbc.odbc.JdbcOdbcStatement.execute(Unknown Source) at sun.jdbc.odbc.JdbcOdbcStatement.executeUpdate(Unknown Source) This error ...

11. Error while inserting data    coderanch.com

Hi I can only say one thing, it all with the data ur passing in the insert statement. You have a table in the database whose one of the primary key column is mapped with primary key column of another table which is master table and ur not entering the proper data in the former. Please talk to your dba and ...

12. Alter Query giving an error    coderanch.com

13. Error at Execute Update    coderanch.com

i have some problem... i create application to select, insert, update, delete database... before when i create...it is work..either execute select, insert, update, delete but now, when i try to check it... select, delete - is working insert, update - not working i have been print the command and run it in EMS SQL, it is work, but in application, it ...

14. query error    coderanch.com

this code give sql exception Too Few parameters.expected import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import java.sql.*; import javax.sql.*; public class Hello extends HttpServlet { public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { PrintWriter out = response.getWriter(); try { Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); Connection conn =DriverManager.getConnection("jdbc :o dbc:comp","",""); Statement stmt =conn.createStatement(); String qry = "select book_no,sc_no,meter_name,name,address1,address2 from master"; ResultSet rs = stmt.executeQuery(qry); out.println(""); ...

15. JDBC INSERT error    coderanch.com

16. A query error    coderanch.com

hi Amardeep, let me clear you, in your WHERE clause you are checking emp_id in the same row, in which you going to insert. You cannot check emp_id unless you insert the value. How can you check the value when you havent inserted it? You have to insert the value first then only you can able to update your record.





17. Error inserting data into database after few successfull insert.    coderanch.com

Hello, I'm trying to insert 3000 reocrds into MySQL Database from CSV file using JDBC but after seccessfull insertion of aprox 1300 records, Its giving me the connection refuse to connect. Stack Trace : Updating Database Please Wait... 2775 com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception: ** BEGIN NESTED EXCEPTION ** java.net.SocketException MESSAGE: java.net.ConnectException: Connection refused: connect STACKTRACE: java.net.SocketException: java.net.ConnectException: ...

18. error while inserting data using poi    coderanch.com

hi to all iam working on jdbc iam using poi (HSSF ) excel sheet to insert data. whenver iam inserting 10 rows of data, the data is entered without error but again when iam inserting only 2 rows of data using same sheet iam getting error. the error i found is, its reading all the previously entered physical data of 10 ...

19. error in update query    coderanch.com

java.sql.SQLException: Syntax error or access violation message from server: "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Dialing''' at line 1" at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2001) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1168) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1279) at com.mysql.jdbc.MysqlIO.sqlQuery(MysqlIO.java:1225) at com.mysql.jdbc.Connection.execSQL(Connection.java:2278) at com.mysql.jdbc.Connection.execSQL(Connection.java:2225) at com.mysql.jdbc.Statement.executeUpdate(Statement.java:1259) at com.mysql.jdbc.Statement.executeUpdate(Statement.java:1205) at com.example.servlets.Call2.doGet(Call2.java:239) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at ...

20. Expected token error while running this query    coderanch.com

Hi All, When I run the below query in DB2 I get the expected results. But when I try to run the same query from java I get the error as expected token error. Below is my query. SELECT appTrans.application_id, appTrans.trans_ts, appTrans.trans_status FROM APPLICATIONS_TRANS_DETAILS appTrans INNER JOIN (SELECT appTrans2.application_id, max(appTrans2.trans_ts) AS Column2 FROM APPLICATIONS_TRANS_DETAILS appTrans2 GROUP BY appTrans2.application_id) AS appTrans3 ON ...

21. Error in updating    coderanch.com

22. error in Insert Query using Perpared statments    coderanch.com

public static void insert(final String PS, final double Acon,final double Anon) { Connection conn = null; PreparedStatement pstmt = null; try{ conn = getConnection(); String insert="insert into PS(PS,Acon,Anon) values(?,?,?)"; pstmt = conn.prepareStatement(insert); pstmt.setString(1,PS); pstmt.setDouble(3,Acon); pstmt.setDouble(4,Anon); int row=pstmt.executeUpdate(); System.out.println(row+" rows was effected"); System.out.println("Good was inserted into PS: "+PS +", Acon: "+Acon+", "+", Anon:"+Anon); pstmt.close(); conn.close(); } catch(SQLException ex) { System.out.println("SQLException: " + ...

24. updating database cause error    coderanch.com

hi, when i try to edit my table and call the metod to update my database, i got an error and the table is filled with a strange value ( B@fiou or similar ) and start to go crazy package desktopapplication1; import java.util.*; import java.sql.*; import javax.swing.JOptionPane; import javax.swing.table.*; public class Datab extends DefaultTableModel { private Connection conn; private Statement st; ...

25. How to Resolve Network Error (tcp_error) for queries taking a long time    coderanch.com

Hi, There is a jsp from which a user submits a request for some data using Submit button. Internally we fire a sql query, as the data is so large that the query takes almost 12mins to execute. Now the prob is in this mean time we get Network Error (tcp_error) indicating the server is busy or an internal server error. ...

26. Syntax Error in Query expression    java-forums.org

27. Error while INserting into DB.    forums.oracle.com

28. java.lang.NullPointerException Error when updating Database    forums.oracle.com

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at editData.updateTable(editData.java:112) at editData.addNew(editData.java:125) at editData$8.actionPerformed(editData.java:335) at javax.swing.AbstractButton.fireActionPerformed(Unknown Source) at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.setPressed(Unknown Source) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source) at java.awt.Component.processMouseEvent(Unknown Source) at javax.swing.JComponent.processMouseEvent(Unknown Source) at java.awt.Component.processEvent(Unknown Source) at java.awt.Container.processEvent(Unknown Source) at java.awt.Component.dispatchEventImpl(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Window.dispatchEventImpl(Unknown ...