How to determine the exact database error in JPA?

For example you are going to add a record in the database which primary already exist
in one of the records in that table in the database. This will cause an error, but how do
I know this error in human readable form just like "Same record with the same PK in the
the table already exist" in JPA.
My current procedure is that I will first check all the records in the database in that table
and compare those PK's in the current record, if there is a conflict then I know the error.
But this procedure is so slow considering there are a lot of records in the database.
Fetch and compare is so slow.
Anyone help me on this.

For example you are going to add a record in the database which primary already existin one of the records in that table in the database. This will cause an error, but how do
I know this error in human readable form just like "Same record with the same PK in the
the table already exist" in JPA>
Why would you do that though? If you're using autogenerated keys it can't occur. If you're using business keys you should be checking for the existence of the key before trying to insert. Any other case is likely to be a bug, so don't do that.

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Hi there,
I am trying track the keyboardevent that triggered by pressing numpad keys as hotkey, but when the numlock is disabled, the same keycode, same keylocation was gotten as pressing in the standard keyboard. how can I determine if the numpad was pressed or the other control keys were pressed?
Thank you!
Andy

Hi there,
I am trying track the keyboardevent that triggered by pressing numpad keys as hotkey, but when the numlock is disabled, the same keycode, same keylocation was gotten as pressing in the standard keyboard. how can I determine if the numpad was pressed or the other control keys were pressed?
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How can a servlet determine the exact requesting URL

This seems like a simple question, but I cannot find a solution. I am wondering how a servlet can determine the exact requesting URL that invoked the servlet. Specifically, I am having trouble making my servlet determine if the port number was specified or not. I am using session tracking, and my web server (by default) produces two separate sessions when hitting https://myserver.com/myservlet and https://myserver.com:443/myservlet.
I have tried to use the HttpUtils.getRequestURL(), but this function seems to assume that if you used https over port 443, that you DID NOT specify 443 in the URL.
SV

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How to determine the mount point for directory /tmp ?

Folks,
Hello. I am installing Oracle 11gR2 RAC using 2 Virtual Machines (rac1 and rac2 whose OS are Oracle Linux 5.6) in VMPlayer and according to the tutorial
http://appsdbaworkshop.blogspot.com/2011/10/11gr2-rac-on-linux-56-using-vmware.html
I am installing Grid infrastructure. I am on step 7 of 10 (verify Grid installation enviroment) and get this error:
"Free Space: Rac2: /tmp"
Cause: Could not determine mount point for location specified.
Action: Ensure location specified is available.
Expected value: n/a
Actual value: n/a
I have checked the free space using the command:
[root@Rac2 /]# df -k /tmp
Output:
Filesystem 1k-blocks used Available Use% Mounted on
/dev/sda1 30470144 7826952 21070432 28% /
As you see above, the free space is enough, but could not determine mount point for /tmp.
Do any folk understand how to determine the mount point for directory /tmp ?
Thanks.

I have just checked "/home/oracle/.bash_profile". But in my computer, there is no "oracle" under /home directory.Is this your first time Linux and Oracle installation? I had a brief look at your referenced link. The reason why you do not find a "oracle" user is because the instructions use "ora11g" instead, which, btw, is not standard. The directories of your installation and your installation source can be somewhat different from known standards and you will have to adjust it to your system.
My best guess is that you have either missed something in the instructions or you need to ask the author of the blog what is wrong. The chance to find someone here who has experience with these custom instructions is probably unlikely.
I suggest you try to locate the cluster verification tool, which should be in the bin directory of your grid installation. Alternatively you might want to check the RAC, ASM & Clusterware Installation forum: RAC, ASM & Clusterware Installation

How to determine the field size

I am going to make a multiplatform application that hopefully
will run on linux and windows 2000.If the os is 2000, then I will use
vb.net/aspx else I'll use java servlets. I make the connection
to the web server ( through HTTP) not directly to database server.
So, the resultset will be stored in the String object. The columns
will be separated by delimeter. Our problem is how to determine
the size and type of the fields of mssql,oracle and postgres database
so that we can include it in the String object.
Ex.
String sResultSet=new String();
ResultSet rs=statement.executeQuery(sSQL);
while(rs.next()){
sResultset=sResultSet + rs.getString(field1) + "||" + rs.getString(field2) + "||";
vertical bars acts as delimeter
supposedly this is the code:
sResultset=sResultSet + rs.getString(field1) +"_" + rs.getFieldType() + "_"+
rs.getFieldSize() + "||" + rs.getString(field2) +"_" + rs.getFieldType() + "_"+
rs.getFieldSize() + "||";
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Anyone can give me an idea how to get the field type and field size of the database?
thanks in advance

Yes, but I dont know how to do it.
Can you give me an example of using it.
Thanks in advance

How to determine the type of the jobject... similar to instanceof

hi,
I would like to know how to determine the jobject reference of an instance is of which class.
this is something similar to instanceof we use in java.
is there any thing like 'instanceof' in JNI. if there how to use it?
i got this as objective question for which answers were(i do not remember exactly)
1.instanceof
2.assignedto
i could nt het much help in googling.
thanks in advance

Hi
The JNI provides a native version to the java instanceof operator, this function takes two arguments
an object refrence and a class refrence and reports JNI_TRUE.
jclass myclass = env->FindClass("your class name");
if(env->IsInstanceOf(obj,myclass) == JNI_TRUE)
// obj is of type myclass
}Regards
pradish

How to determine the maximum allowable length of a filename for Window ?

Hi all,
Could I know how to determine the allowable file length (the length of the absolute path) for a file in Window environment?
Due to some reason, I generated a zip file with a very long filename ( > 170) and put in a folder(the length of the folder path around 90). The length of the absolute path is around 260.
I used FileOutputStream with the ZipOutputStream to write out the zip file. Everything is working fine while i generating the zip file.
However, while i try to extract some files from the zip file i just created, i encountered the error
java.util.zip.ZipException The filename is too long.
I am using the class ZipFile to extract the files from the zip file like the following
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ZipFile zipF = new ZipFile(absPath); //<-- here is the root causeIs it possible to pre-determine the maximum allowable filepath length prior i generate the zip file ? This is weird since i got no error while i created the zip file, but have problem in extracting the zip file ......
Thanks

Assuming you could determine the max, what would you do about it? I'd say you should just assume it will be successful, but accommodate (handle) the possible exception gracefully. Either way you're going to have to handle it as an "exception", whether you "catch" an actual "Exception" object and deal with that, or manually deal with the length exceeding the max.

How to determine the u2018equivalent position of the same organizationu2019?

Hi,
"Position change is a transfer from one position to an equivalent position within the same org reporting structure and under the same chief position"
How to determine the u2018equivalent position of the same organizationu2019?
Cheers.

u can identity the position with help of the Holder
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in this case we can use the report RHDESC20 se38
not an exact solution for ur question
will try to find some other way

How can determine the duration of an audio file

Hi,
i'm making speech recognition project using java. i can capture sound by michrophone and playback it. the type of the sound is .wav.
my question is how to determine the recording duration (for example: determine the duration for 0.25 second) because i must recorded syllable,the assumtion is needed less than 0.5 second to say a word. and then.. can this wav file be changed into... binary or integer ?
thanks for your help

FYI I'm newbie in Java,
Yes, I want to limit the audio file lengths to a certain value. What should I do?
I have read wav file using an AudioInputStream, for audio format I'm using sampleRate = 8000.0F and sampleSizeInBits = 8. My friend said if I used 8 bit for sampleSizeInBit (resolution in amplitude) the binary file should be -128 till 127 in range according to the bit. I try this code and the result is binary file which is zero, positive, and negative.
the code
try{
audioInputStream.read(audioBytes);
for (int i=0; i<audioBytes.length;i++){
System.out.println(audioBytes);
catch(IOException ioe){
System.out.println("Error"+ioe);
I'm not sure that the code is right, but it works. Should I change the audioBytes into integer before? I try this code but it doesn't work.
int a = new int[audioBytes.length];
for (int i=0;i<audioBytes.length;i++){
a[i] = new Byte(audioBytes[i]).intValue();
this binary file has been printed in console (Im using texpad). So, how I can write that to file.txt? I'm using FileoutputStream but it doesn't work correctly. Here is the code
FileOutputStream fos = new FileOutputStream(strFilePath);
{audioInputStream.read(audioBytes);
fos.write(audioBytes);
catch (IOException ioe){
System.out.println("Error"+ioe);
When I open file .txt is read as character like this üüüüüüüüüüüüûüüüûüûûû ||||||| ||||||| ||||||||||||||||||||||||||||| ےےےےےےےےےےےے (like using alt plus number)
Edited by: anasfr on Mar 19, 2009 9:02 AM

Insufficient rights - How to determine the correct rights?

All,
Does anyone know how to determine the correct rights if you get the error message "Insufficient rights for operation"?
In SAP backend systems you can start transaction SU53 to check your "missing" authorizations, but is something like that also possible in MDM?
I also don't see any detailed information in the logs or reports.
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p.s. I've read the complete reference guide of the MDM console and sometimes it's really obvious what Functions and Tables/Fields you have to set, but for instance when I want to give authorization to maintain Relationships in the DataManager and have set the Main table and all Relationships to Read/Write and have set all Records and DataManager functions to Execute it still doesn't allow me to maintain the relationships on the records! I only get the message "insufficient rights" and it's unclear what rights are missing!
Regards,
Marcel

hi Marcel,
I doubt if we have anything in MDM to show you what authorizations are missing.However,you can check the following :
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2. Check if authorization are given in the role for that actitvity.
3. Check how many roles are allocated to user and Is authorization given in all roles if more than 1 role is assigned to that user?
Please let us know answer of the queries...
Regards,
Vineet

Cannot connect to the configuration database Error in HTTPS

Hi
We have a SharePoint 2010 farm ,with more then 20 web application running . I am getting "Cannot connect to the configuration database" error in one web application when we browse through https
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Kindly help to resolve the issue
Prabakar

HI Prabakar,Check the below URL that exactly related to the issue.
http://expertsharepoint.blogspot.de/2014/05/cannot-connect-to-configuration-database.html
Anil Avula[MCP,MCSE,MCSA,MCTS,MCITP,MCSM] See Me At: http://expertsharepoint.blogspot.de/

SBS 2008 - How to rebuild the reporting database

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is displayed:
"There was an error while loading data for this page".
When I click "Close" to close the error message, I'm left looking at the console's reports screen but with nothing shown. The top pane simply says:
"There are no reports to display".
So, I then click on "Add a new report" in the right-hand pane. Nothing happens for a couple of minutes - not even an hour glass. Eventaully, a window opens up, headed "New Report Properties". So, I had a go at creating
a new report, e.g.:
- Report Name = Test123
- Content = Summary
- E-Mail Options = I entered my email address
- Schedule = I set it to daily at 9pm
When I clicked "Ok", after a couple more minutes of thinking, it came back with:
"The report properties cannot be saved. Reopen the Report Properties dialog, and then try again."
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If there is a problem with the actual reporting database, I'd be happy to rebuild it, or even reinstall SQL. But I don't know how. My main concern is that WSUS is running beautifully and I don't want to go anywhere near anything that might
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I worked through the article but hit problems.  Any thoughts would be gratefully received.
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1. I checked that SQL Server 2005 is installed and that Windows SBS Manager is installed and started
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=============================================================
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Stop-Service : Cannot find any service with service name 'MSSQL$SBSMONITORING'.
At C:\windows\temp\Create-SBSMonitoringDb.ps1:28 char:13
+ Stop-Service <<<< 'MSSQL$SBSMONITORING'
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+     $key=get-itemproperty <<<< "HKLM:\SOFTWARE\Wow6432Node\Microsoft\Microsoft SQL Server\SBSMONITORING\Setup\"
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Start-Service : Cannot find any service with service name 'MSSQL$SBSMONITORING'.
At C:\windows\temp\Create-SBSMonitoringDb.ps1:54 char:14
+ Start-Service <<<< 'MSSQL$SBSMONITORING'
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Sqlcmd: Error: Microsoft SQL Native Client : An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not  allow
remote connections..
Sqlcmd: Error: Microsoft SQL Native Client : Login timeout expired.
Sqlcmd: Error: Microsoft SQL Native Client : An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote
connections..
Sqlcmd: Error: Microsoft SQL Native Client : Login timeout expired.
WARNING: Waiting for service 'Windows SBS Manager (DataCollectorSvc)' to finish starting...
WARNING: Waiting for service 'Windows SBS Manager (DataCollectorSvc)' to finish starting...
WARNING: Waiting for service 'Windows SBS Manager (DataCollectorSvc)' to finish starting...
WARNING: Waiting for service 'Windows SBS Manager (DataCollectorSvc)' to finish starting...
WARNING: Waiting for service 'Windows SBS Manager (DataCollectorSvc)' to finish starting...
WARNING: Waiting for service 'Windows SBS Manager (DataCollectorSvc)' to finish starting...
WARNING: Waiting for service 'Windows SBS Manager (DataCollectorSvc)' to finish starting...
WARNING: Waiting for service 'Windows SBS Manager (DataCollectorSvc)' to finish starting...
WARNING: Waiting for service 'Windows SBS Manager (DataCollectorSvc)' to finish starting...
<Ctrl-C>
=================================================================
If you have read this far and understand the above, what should I do next?

How to access the sql database in applet?

How to access the sql database in applet?
Please help me.

import java.applet.*;
import java.awl.*;
import java.sql.*;
//other packages
public class jdb extends Applet
Connection con;
Statement stmt;
String name="drvijay";
String phoneno="9842088860";
public void init(){}
pubilc void stop(){}
public void destroy(){}
public void start()
call();
public void call()
try{
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          stmt=conn.createStatement();
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               System.out.println("error"+e);
               System.exit(0);
//<applet code="jdb" height="200" width="200"> </applet>
u this jdbc statement in any of the method..
*/

How to get the exact time when condition records has been created?

Hello All,
Can anyone thorw some light on - how to find the exact time on which a particular condition record has been created?
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Dear Hrishi,
Try with this
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I hope this will help you,
Regards,
Murali.

How to share the same Database Connection when using several Task Flows ?

Hi All,
I’m using JDev 11.1.1.3.0.
I’m developing ADF Fusion Applications (ABC BC, ADF Faces…)
These applications are deployed on a Weblogic server.
Each application has only one Application Module.
All Application Modules have the same connection type defined: JDBC DataSource : jdbc/GCCDS
It is working fine.
I’ve also developed Task Flow Applications for small thinks that are reused in multiple main applications.
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All these task flows are deployed to JAR file (ADF Library JAR File) and are reused on my main applications. (drag and drop from the Resource Palette to ADF Regions….).
There are some parameters passed to Task Flows, so that they can filter data depending on which main applications they are called from.
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All my main applications are using more and more task flows. Which is nice for the reusability etc…?
Only ONE PROBLEM: DATABASE CONNECTIONS.
Every Task Flows service made a database connection. So one user may have 10 database connections for the same adf page. And when there are 100 users that are working at the same time, it becomes a problem.
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Best Regards
Nicolas

Hi John,
When I open a ADF Library JAR file of one of my task flow. (gcc_tf_recentSites.jar)
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bc4j.xcfg details are
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+<AppModuleConfigBag ApplicationName="mu.gcc.tf.recentSites.model.service.TF_RecentSitesService">+
+<AppModuleConfig DeployPlatform="LOCAL" jbo.project="mu.gcc.tf.recentSites.model.TF_RecentSites_Model" name="TF_RecentSitesServiceLocal" ApplicationName="mu.gcc.tf.recentSites.model.service.TF_RecentSitesService">+
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+<AM-Pooling jbo.ampool.maxpoolsize="1" jbo.ampool.isuseexclusive="false"/>+
+<Security AppModuleJndiName="mu.gcc.tf.recentSites.model.service.TF_RecentSitesService"/>+
+</AppModuleConfig>+
+</AppModuleConfigBag>+
+</BC4JConfig>+
So, it seems that the Application Module is packaged with the task flow....
Is it normal ?
Regards
Nicolas

How to determine the exact database error in JPA?

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