Backup facility using java

hi,
i want to write a routine to take regular/periodical backup in the server... so i want to take FTP source files as zip or tar to the local system... can anybody suggest how it can be done..? i know jsp, servlets ..

hi vjiay thanks...i just wanted to create some
cronjobs in linux/php like automatic schedule..will
download files from server to my local system..ans : yes
You can schedule your own jobs by using 'crontab -e'.
http://www.4java.ca/faq.html

Similar Messages

Cannot reinstate catalog after returning PC (Windows 7) to factory settings (because of worm infection). Catalog was backed up on external drive but not using PSE backup facility. Cannot find and *.tly file. Is this hopeless?

Cannot reinstate catalog after returning PC (Windows 7) to factory settings (because of worm infection). Catalog was backed up on external drive but not using PSE backup facility. Cannot find and *.tly file. Is this hopeless?

If you made backups of all of your photos and your catalog file using some third-party method (i.e. not using the PSE catalog backup command), then you should be able to restore everything.
Step 1. Put the photos in the EXACT SAME LOCATION as before. For example, if they were in subfolders of C:\Users\<username>\Documents, then they must go into the exact same subfolders of C:\Users\<username>\Documents.
Step 2. Move the catalog file to wherever you want it to be, and then double-click on it.

How do you reference a Formular Object on a Crystal Report using Java

Hi all,
I am trying to reference an object on my report which contains a Formula field.
I have read the following 2 threads, but they refer to textObjects:
[How do you reference a textObject on a Crystal report using Java|Re: How do you reference a textObject on a Crystal report using Java?]
[Changing the text of ITextObject programatically|Re: Changing the text of ITextObject programatically]
But I cannot even get those to work. I can reference a object which refers to a database field but as soon as I try
reference a textObject or reportObject I just get a NULL variable.
Below is the code I am useing
IReportObject dbField = reportClientDocument.getReportDefController().findObjectByName("BOB1");
IReportObject textBob = reportClientDocument.getReportDefController().findObjectByName("BOB2");
"BOB1" is the name of my DB field Object, and "BOB2" can be a Text box or a Formula item and I just get nothing.
I have just tested it with a FieldHeadingObject and that returns a valid object, so clearly I am going about this the wrong way
for objects I place on the reports which are not driven by the database items.
Ultimately what I want to do is reference an object in the Report Footer which will contain the RecordCount of the number of
records contained in the report, which I am them going to use to determine if the report holds data,
if it does I will print it, else ignore it and move on the the next report. I am doing this so that I can at an extra filter to split
a report up into groups and produce a sinlge PDF for each group instead of one massive PDF containing all the groups.
So if someone has a solution to any of my problems I would be very greatful, and I dont mind being told Im an idiot and should
rather do it another way, as long as you supply that other way
Thanks for the help
Darren
Edited by: Darren Jackson on Dec 16, 2009 7:29 PM
Forgot to add am using CR4Ev2 SP3

Right I have made some headway.
Firstly, Im an idiot. I was making changes and setting up test fields on my report, but then when running the app, I had it looking at
the backup report, which would explain why all the new textbox fields were not being found.
The stupiditity did force me to delve deep and work out a fair bit of how the reports work, so cant complain too much. BUT, I am still
not able to return values of Formula fields and formulas extra. Could someone tell me if this is even possible. I get retrieve the formula field
name, and properties but not its value once the report has been populated. Am I wasting my time?
Well I will continue dismantling my reports till I find the answer, or someone points me in the right direction.
If any one is interested this is the code I used to drill down to my text boxes:
IReportObject recCount = reportClientDocument.getReportDefController().findObjectByName("TB1");
ITextObject obj_RecCount = (ITextObject) recCount;
System.out.println(obj_RecCount.getName());
Paragraphs objP = obj_RecCount.getParagraphs();
for (int i = 0; i < objP.size(); i++){
     ParagraphElements pE = objP.getParagraph(i).getParagraphElements();
     for (int j = 0;j < pE.size(); j++){
          IParagraphTextElement pEE = (ParagraphTextElement) pE.getParagraphElement(j);
          System.out.println(pEE.getText());
Cheers

Access mirror site using java, download files and other information?

Hi, I have 2 nodes/servers on the system both running webservers and having the same interface, but at a time user will access one node at a time from their browser, but this interface will be able to allow the user to get information from the both the nodes. the information that the user can get is DB stored as well as files on the disk of either node.
i can manage the DB, cuz there is nothing to it, but how do I get files from the other node?
currently any files/web documents are all stored in a application directory of the web root and protected by htaccess i believe, so when a user logs on to node one he can access all plain text/binary files along with web content since the web server authorizes the user to access anything in that dir. but at the same time from the same session I want to be able to access files in a mirror site using the same username and password and not having him to enter it again. the username/pass combo is replicated on both the servers, it this possible?
currently i use the http password protection provided by apache to access one node, but can i use the same session on another machine with the same credentials?
If this is not possible how can i do this programatically using java? can i do can "ls" on the directory i want on another server and display the list to the user and then when he clicks on that file name i fetch it from the backup/mirror server and have him save it using http or ftp?
It would be great if we can get a solution to this.
Thank you very much in advance.
Ankur

If you install the web server on different machines, It is possible to share the informations between them.

How to extract the number from image using java

Hello every one
i want to develope a project which can extract the number from image
that i can use as inter or String or char.
Is there any API in java which provide this type of facility.
right now i m using java 5
thanks in Advance
Jignesh

In my project i have a image in that i have a
co-ordinate (x,y) I am still puzzled as to what you seek. It sounds to me like you have a point (x, y) represented by p. in java it's just p.getX() p.getY()
i want to convert that cordinate to numeric form,
i mena i want to use that cordinate in somewhere else
in project.point.getX() point.getY()
So need to convert it into numeric form u can called
it OCR also.OCR is optical character recognition. If I want out and took a picture of the US Declaration of Independence and then wanted the words on the parchement in the picture in text form, then I would run the picture through a software program and it would try to optically recognise what lettering and number were present in the picture. In the end, I would have a text of what is written on the US Declaration of Independence.
Is that what you want?

Regarding Backup of ABAP+JAVA system

Hi,
We've ECC 5.0(ABAPJAVA) system in which we've configured JDI and NWDS was installed on server's desktop. Now my concern here is how to take the backup of ABAPJAVA system which should include NWDS changes as well.
Please give me some suggestions on this.
Thanks in Advance.
Kind regards,
Mogileeswar

Hello,
Please see Markus Doehr's response
at
Re: Backup/Recovery strategy for SAP netweaver 7.0 SR3 connected to BI JAVA
I suggest you consider those as two different instance even if they run on the same hardware.
Taking a backup of a Java instance to a restorable state (in case of a DR) requires:
- a database backup
- a backup of the \usr\sap\<SID-of-J2EE> at the same time the database backup is running
- a registry backup (including the users and their UUIDs)
This will enable you to install a plain operating system, installing the database software and recover your Java instance. Note: This works only if the hostname and the SID are the same as on the original system. This procedure can not be used to do a system copy of the Java instance.
Taking a backup of ABAP is almost the same:
- a database backup
- a backup of the \usr\sap\<SID-of-ABAP>
- a registry backup
Since it's not possible to restore the registry partially but only completely a restore of it will overwrite the current values which is not a problem since they are basically the same.
The BI-Java instance is not directly dependent on the BI-ABAP backend but depending on where your users are stored the Java instance might not come up if your ABAP is not running.
Regards,
Paul

How to find Free disk space using Java program ?

Hi friends,
I need to find out the Free Hard disk Space to alert the user and send them mail if hard drive is about 85% full.
i am developing databackup program in which i have to check it , if hard drive is fulled with 85% or remain left space is less email sent to user to notify and delete older backups.
give me solution using java program...
please
Help me i need it in recent...

Hi friends,
I need to find out the Free Hard disk Space to alert
the user and send them mail if hard drive is about
85% full.
i am developing databackup program in which i have to
check it , if hard drive is fulled with 85% or remain
left space is less email sent to user to notify and
delete older backups.
give me solution using java program...
please
Help me i need it in recent...

I am trying to use java file as Model layer and jsf as presentation layer

I am trying to use java file as Model layer and jsf as presentation layer and need some help
I successfully get the value of h:outputText from java file by doing simple binding operation but I am facing problems when I am trying to fill h:dataTable
I create java file
package oracle.model;
import java.sql.;*
import java.util.;*
*public class TableBean {*
Connection con ;
Statement ps;
ResultSet rs;
private List perInfoAll = new ArrayList();
*public List getperInfoAll() {*
perInfoAll.add(0,new perInfo("name","username","blablabla"));
return perInfoAll;
*public class perInfo {*
String uname;
String firstName;
String lastName;
*public perInfo(String firstName,String lastName,String uname) {*
this.uname = uname;
this.firstName = firstName;
this.lastName = lastName;
*public String getUname() {*
return uname;
*public String getFirstName() {*
return firstName;
*public String getLastName() {*
return lastName;
right click on the file and choose 'create data control'
then i wrote the jsf file:
*<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%>*
*<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>*
*<f:view>*
*<h:dataTable id="dt1" value="#{bindings.perInfoAll}"*
var="item" bgcolor="#F1F1F1" border="10"
cellpadding="5" cellspacing="3" rows="4" width="50%"
dir="LTR" frame="hsides" rules="all"
*>*
*<f:facet name="header">*
*<h:outputText value="This is 'dataTable' demo" id="ot6"/>*
*</f:facet>*
*<h:column id="c2">*
*<f:facet name="header">*
*<h:outputText value="First Name" id="ot1"/>*
*</f:facet>*
*<h:outputText style="" value="#{item.firstName}"*
id="ot2"/>
*</h:column>*
*<h:column id="c4">*
*<f:facet name="header">*
*<h:outputText value="Last Name" id="ot9"/>*
*</f:facet>*
*<h:outputText value="#{item.lastName}" id="ot8"/>*
*</h:column>*
*<h:column id="c3">*
*<f:facet name="header">*
*<h:outputText value="Username" id="ot7"/>*
*</f:facet>*
*<h:outputText value="#{item.uname}" id="ot4"/>*
*</h:column>*
*<f:facet name="footer">*
*<h:outputText value="The End" id="ot3"/>*
*</f:facet>*
*</h:dataTable>*
*</center>*
*</af:document>*
*</f:view>*
but nothing is appear in my table
I know that there is something wrong in calling the binding object
I need help pls and where can i find some help to deal with another tag types
thanks

i dragged the "perInfoAll" from my "Data Controls" and choosed adf table (even I know that new table with adf tags well be generated and i want table with jsf tags)
and this code is generated
*<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"*
*"http://www.w3.org/TR/html4/loose.dtd">*
*<%@ page contentType="text/html;charset=UTF-8"%>*
*<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>*
*<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%>*
*<%@ taglib uri="http://xmlns.oracle.com/adf/faces/rich" prefix="af"%>*
*<f:view>*
*<af:document id="d1">*
*<af:messages id="m1"/>*
*<af:form id="f1">*
*<af:table value="#{bindings.perInfoAll1.collectionModel}" var="row"*
*rows="#{bindings.perInfoAll1.rangeSize}"*
*emptyText="#{bindings.perInfoAll1.viewable ? 'No data to display.' : 'Access Denied.'}"*
*fetchSize="#{bindings.perInfoAll1.rangeSize}"*
*rowBandingInterval="0"*
*selectionListener="#{bindings.perInfoAll1.collectionModel.makeCurrent}"*
*rowSelection="multiple" id="t1">*
*<af:column sortProperty="uname" sortable="false"*
*headerText="#{bindings.perInfoAll1.hints.uname.label}"*
*id="c1">*
*<af:inputText value="#{row.bindings.uname.inputValue}"*
*label="#{bindings.perInfoAll1.hints.uname.label}"*
*required="#{bindings.perInfoAll1.hints.uname.mandatory}"*
*columns="#{bindings.perInfoAll1.hints.uname.displayWidth}"*
*maximumLength="#{bindings.perInfoAll1.hints.uname.precision}"*
*shortDesc="#{bindings.perInfoAll1.hints.uname.tooltip}"*
*id="it3">*
*<f:validator binding="#{row.bindings.uname.validator}"/>*
*</af:inputText>*
*</af:column>*
*<af:column sortProperty="firstName" sortable="false"*
*headerText="#{bindings.perInfoAll1.hints.firstName.label}"*
*id="c2">*
*<af:inputText value="#{row.bindings.firstName.inputValue}"*
*label="#{bindings.perInfoAll1.hints.firstName.label}"*
*required="#{bindings.perInfoAll1.hints.firstName.mandatory}"*
*columns="#{bindings.perInfoAll1.hints.firstName.displayWidth}"*
*maximumLength="#{bindings.perInfoAll1.hints.firstName.precision}"*
*shortDesc="#{bindings.perInfoAll1.hints.firstName.tooltip}"*
*id="it2">*
*<f:validator binding="#{row.bindings.firstName.validator}"/>*
*</af:inputText>*
*</af:column>*
*<af:column sortProperty="lastName" sortable="false"*
*headerText="#{bindings.perInfoAll1.hints.lastName.label}"*
*id="c3">*
*<af:inputText value="#{row.bindings.lastName.inputValue}"*
*label="#{bindings.perInfoAll1.hints.lastName.label}"*
*required="#{bindings.perInfoAll1.hints.lastName.mandatory}"*
*columns="#{bindings.perInfoAll1.hints.lastName.displayWidth}"*
*maximumLength="#{bindings.perInfoAll1.hints.lastName.precision}"*
*shortDesc="#{bindings.perInfoAll1.hints.lastName.tooltip}"*
*id="it1">*
*<f:validator binding="#{row.bindings.lastName.validator}"/>*
*</af:inputText>*
*</af:column>*
*</af:table>*
*</af:form>*
*</af:document>*
*</f:view>*
but when run it i see the following errors
*Class oracle.adf.model.adapter.bean.BeanDataControl can not access a member of class nl.amis.hrm.EmpManager with modifiers "private"*
*Object EmpManager of type DataControl is not found.*
*java.lang.NullPointerException*
*Class oracle.adf.model.adapter.bean.BeanDataControl can not access a member of class nl.amis.hrm.EmpManager with modifiers "private"*
*Object EmpManager of type DataControl is not found.*
*java.lang.NullPointerException*
:(

Using Java, How can I Update, Add, Delete nodes in XML Files.

Hi,
I want to store the student record (like Name, Age, school name, total mark etc.,) as nodes in the XMLfile. Also I should able to Update, Add, Delete any nodes (student record) in the XML file. How can I achieve this...using Java
I am able to read the content of the xml file using xml-parser. But my problem is
updating the xml file.
pls suggest some solutions or links with " example source code"
Thanks :-)

There are 2 kinds of XML parsers : SAX and DOM. DOM seems to suit your need. You can use JAXP APIs to add, delete or change nodes or attributes.
http://java.sun.com/webservices/jaxp/dist/1.1/docs/tutorial/TOC.html provides contents that would satisfy most of the needs.
To save a DOM modified XML file use java IO APIs to write to the same file from which it was read using a Document object ( doc.getNodeValue() ).

ORA-04030: out of process memory when using Java Stored Procedures

Hello,
I have a problem using Java Stored Procedures in Oracle 10g.
My Java application performs http posts to a webservice and the response is parsed in order to populate some DB tables.
There is a scheduled job which calls the Java Stored Procedure every x minutes.
No matter of the 'x minutes' values - after about 160 - 200 calls I get this error:
ORA-04030: out of process memory when trying to allocate 1048620 bytes (joxp heap,f:OldSpace)
ORA-04030: out of process memory when trying to allocate 2097196 bytes (joxp heap,f:OldSpace)
The job stops just while is posting the http request. The weird thing is that almost each time the first http post request I get this error:
java.net.ConnectException: Connection refused
     at java.net.PlainSocketImpl.socketConnect(Native Method)
     at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:305)
     at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:171)
     at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:158)
     at java.net.Socket.connect(Socket.java:426)
     at com.sun.net.ssl.internal.ssl.SSLSocketImpl.connect(DashoA6275)
     at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at org.apache.commons.httpclient.protocol.ReflectionSocketFactory.createSocket(ReflectionSocketFactory.java:140)
     at org.apache.commons.httpclient.protocol.SSLProtocolSocketFactory.createSocket(SSLProtocolSocketFactory.java:130)
     at org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:707)
     at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:387)
     at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
     at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
     at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:323)
and the second try works fine.
So, The out of process memory occured each time just before getting such an error, and I suspect to be a connection between these errors.
Tech details:
1. OS: WinXP
2. Oracle 10.1.0.2.0
3. To perform http post I use HttpClient 3.1 from Apache.
4. I checked the http connection to be closed each time, and this is done.
5. I checked the oracle statement and connection to be closed each time and this is done
6. The JVM error (logged in .trc files of Oracle) is:
java.lang.OutOfMemoryError
     at java.lang.Thread.start(Native Method)
     at sun.security.provider.SeedGenerator$ThreadedSeedGenerator.run(SeedGenerator.java:297)
DB Settings details:
Starting up ORACLE RDBMS Version: 10.1.0.2.0.
System parameters with non-default values:
processes = 200
sessions = 225
shared_pool_size = 159383552
large_pool_size = 8388608
java_pool_size = 104857600
nls_language = AMERICAN
control_files = C:\ORACLE\PRODUCT\10.1.0\ORADATA\XXXXXX\CONTROL01.CTL, C:\ORACLE\PRODUCT\10.1.0\ORADATA\XXXXXX\CONTROL02.CTL, C:\ORACLE\PRODUCT\10.1.0\ORADATA\XXXXXX\CONTROL03.CTL
db_block_size = 8192
db_cache_size = 29360128
compatible = 10.1.0
fal_client = XXXXXX
fal_server = XXXXXXs
log_buffer = 524288
log_checkpoint_interval = 100000
db_files = 70
db_file_multiblock_read_count= 32
db_recovery_file_dest = C:\oracle\product\10.1.0\flash_recovery_area
db_recovery_file_dest_size= 2147483648
standby_file_management = AUTO
undo_management = AUTO
undo_tablespace = undotbs_01
undo_retention = 14400
remote_login_passwordfile= EXCLUSIVE
db_domain =
dispatchers = (PROTOCOL=TCP) (SERVICE=XXXXXXXDB)
remote_dependencies_mode = SIGNATURE
job_queue_processes = 4
parallel_max_servers = 5
background_dump_dest = C:\ORACLE\PRODUCT\10.1.0\ADMIN\XXXXXX\BDUMP
user_dump_dest = C:\ORACLE\PRODUCT\10.1.0\ADMIN\XXXXXX\UDUMP
max_dump_file_size = 10240
core_dump_dest = C:\ORACLE\PRODUCT\10.1.0\ADMIN\XXXXXX\CDUMP
sort_area_size = 1048576
sort_area_retained_size = 1048576
db_name = XXXXXX
open_cursors = 500
optimizer_mode = FIRST_ROWS
pga_aggregate_target = 25165824
Any help would be appreciated. Thanks.
Can be a problem with JVM threading under Oracle ?

The server prcess failed to allocate more memory for large objects ( in Oldspace).
If you Google ORA-04030, you will see several recommendations to work around this.
The Java VM in the database already has HttpClient, i don't know why you are loading the Apache HttpClient but this might not be the surce of the problem.
Kuassi http://db360.blogspot.com

Can we use Java Script in SAP BusinessObjects Web Intelligence 4.1?

Can we use Java Script or any other Script in BI 4.1 Web Intelligence? If possible please do let me know the method/process

Hi Kranthi,
You have option to read a cell content as html. else you will have to go for SDK. I think you will get better suggestions, if you can explain your requirement in a little detailed manner.
refer below links for more details about SDK.
http://bukhantsov.org/2013/04/how-to-create-a-webi-document-using-java-report-engine-sdk/
Regards,
Nikhil Joy

Using Java Access bridge (Accessibility) with oracle forms 6.0 client

I'm trying to use JAB (java Access bridge ) to capture events in oracle forms 6.0 client .
I've a Jinitiator 1.1.8 and JRE version 1.4x
I've configured JAB as per the installation guide . However the events don't surface in Java Monkey .
Has anybody encountered similar issue ? what is the solution for the issue ??
Also on one of the forums I read Jinitiator 1.3x and above is automatically recognised by Java Access bridge .
For jinitiator version less than 1.3 manual configuration is required . however I haven;'t been able to find any on the oracle forms KB
Also here is the excerpt from the link http://www.oracle.com/us/corporate/accessibility/faqs/index.html
Q: Are there special steps for using Java-based applications with assistive technology?
A: If the Oracle application is written in Java, such as JDeveloper or Oracle Forms (runtime), customers must first install the latest version of Sun's Java Access Bridge. The Java Access Bridge provides the integration with screen readers such as JAWS or SuperNova that support Java. You just download the Access Bridge and install it. Sun's AccessBridge 2.0x recognizes Oracle's JInitiator 1.3x and above so no manual configuration steps are necessary. The Access Bridge is available from: http://java.sun.com/products/accessbridge. At the time this document was written, Access Bridge 2.0.1 is the most current publicly available production release; Oracle recommends upgrading to this version. Sun's AccessBridge is bundled with Oracle Universal Installer (OUI) and can be found in the Java Runtime Engine (JRE). More information for configuring such products is in the respective product documentation, or on http://www.oracle.com/us/corporate/accessibility/products/index.html.
Edited by: 974810 on 4 Dec, 2012 1:10 AM

ODP.NET requires Oracle Client 9.2 or higher.
You can find additional information about ODP.NET from the FAQ:
http://www.oracle.com/technology/tech/windows/odpnet/faq.html
and the ODP.NET homepage:
http://www.oracle.com/technology/tech/windows/odpnet/index.html
Hope that helps,
Mark

Unable to run my application using java web start

i have created one application and use java web start to download the application. all the files are succesfully downloaded but when i try to run the application an expected error occur. this only happen in my machine but not in other machine i'm currently using
-jsdk1.4.2
-windows 2000 professional 5.00.2195 service pack 3
-pentium III 870 Mhz
-x86-based PC
-RAM 256 Mhz
Anyone knows why, plz help me with this puzzle

Please post the information from the Web Start "Exception" and "Wrapped Exception" tabs when the error occurs (I assume the error was in fact unexpected ;-)
A blind stab in the dark would be that you don't have write permission to the cache directory on the second machine. Also worth checking that the proxy settings on the second machine are the same as the first (if they are on the same network).

How to get comparable Oracle JDBC performance using Java 1.4 vs 1.1.7?

Our application makes extensive use of JDBC to access an Oracle database. We wrote it a number of years ago using java 1.1.7 and we have been unable to move to new versions of java because of the performance degradation.
I traced the problem to JDBC calls. I can reproduce the problem using a simple program that simply connects to the database, executes a simple query and then reads the data. The same program running under java 1.4 is about 60% slower than under java 1.1.7. The query is about 80% slower and getting the data is about 150% slower!
The program is attached below. Note, I run the steps twice as the first time the times are much larger which I attribute to java doing some initializations. So the second set of values I think are more representative of the actual performance in our application where there are numerous accesses to the database. Specifically, I focus on step 4 which is the execute query command and step 5 which is the data retrieval step. The table being read has 4 columns with 170 tuples in it.
Here are the timings I get when I run this on a Sparc Ultra 5 running
SunOs 5.8 using an Oracle database running 8.1.7:
                 java 1.1.7 java 1.4
        overall:    2.1s         3.5s
        step 1:     30           200
        step 2:    886          2009
        step 3:      2             2
        step 4:      9            17
        step 5:    122           187
        step 6:      1             1
        step 1:      0             0
        step 2:    203           161
        step 3:      0             1
        step 4:      8            15   <-   87% slower
        step 5:     48           117   <- 143% slower
        step 6:      1             2I find the same poor performance from java versions 1.2 and 1.3.
I tried using DataDirect's type 4 JDBC driver which gives a little better performance but overall it is still much slower than using java 1.1.7.
Why do the newer versions of java have such poor performance when using JDBC?
What can be done so that we can have performance similar to java 1.1.7
using java 1.4?
========================================================================
import java.util.*;
import java.io.*;
import java.sql.*;
public class test12 {
    public static void main(String args[]) {
        try {
                long time1 = System.currentTimeMillis();
/* step 1 */ DriverManager.registerDriver(
                    new oracle.jdbc.driver.OracleDriver());
                long time2 = System.currentTimeMillis();
/* step 2 */ Connection conn = DriverManager.getConnection (
              "jdbc:oracle:thin:@dbserver1:1521:db1","user1","passwd1");
                long time3 = System.currentTimeMillis();
/* step 3 */ Statement stmt = conn.createStatement();
                long time4 = System.currentTimeMillis();
/* step 4 */ ResultSet rs = stmt.executeQuery("select * from table1");
                long time5 = System.currentTimeMillis();
/* step 5 */ while( rs.next() ) {
                  int message_num = rs.getInt(1);
                  String message = rs.getString(2);
                long time6 = System.currentTimeMillis();
/* step 6 */ rs.close(); stmt.close();
                long time7 = System.currentTimeMillis();
            System.out.println("step 1: " + (time2 - time1) );
            System.out.println("step 2: " + (time3 - time2) );
            System.out.println("step 3: " + (time4 - time3) );
            System.out.println("step 4: " + (time5 - time4) );
            System.out.println("step 5: " + (time6 - time5) );
            System.out.println("step 6: " + (time7 - time6) );
            System.out.flush();
        } catch ( Exception e ) {
            System.out.println( "got exception: " + e.getMessage() );
        ... repeat the same 6 steps again...
}

If I run my sample program with the -server option, it
takes a lot longer (6.8s vs 3.5s).Which has to be expected, as the -server option optimizes for long running programs - so it shoudl go with my second suggestion, more below...
I am not certain what you mean by "just let the jvm
running". Our users issue a command (in Unix) which
invokes one of our java programs to access or update
data in a database. I think what you are suggesting
would require that I rewrite our application to have a
java program always running on the users workstation
and to also rewrite our
commands (over a hundred) to some how pass data and
receive data with this new server java program. That
does not seem a very reasonable just to move to a new
version of java. Or are you suggesting something
else?No I was just suggestion what you descript. But if this is not an option, then maybe you should merge your java-programs to C or another native language. Or you could try the IBM-JDK with the -faststart (or similar) option. If thew Unix you mention is AIX, then there would be the option of a resetable-vm. But I cannot say if this VM would solve your problem. Java is definitly not good for applications which only issue some unqiue commands because the hotspot-compiler can not be efficiently used there. You can only try to get 1.1.7 performance by experimenting with vm-parameters (execute java -X).

Help needed while exporting crystal reports to HTML file format using java

Help needed while exporting crystal reports to HTML file format using java api(not using crystalviewer).i want to download the
html file of the report
thanks

the ReportExportFormat class does not have HTML format, it has got to be XML. Export to HTML is available from CR Designer only.
Edited by: Aasavari Bhave on Jan 24, 2012 11:37 AM

Backup facility using java

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