Deadlock Detected While Waiting For Resource
Jan 27, 2015In my project i am getting this error, i couldn't investigating this error :
..java.sql.SQLException: ORA-00060: deadlock detected while waiting for resource
In my project i am getting this error, i couldn't investigating this error :
..java.sql.SQLException: ORA-00060: deadlock detected while waiting for resource
how to setup a program that simulates the progression of a line over time.The scenario involves a bank and 5 tellers. There is one line of customers that starts off with an initial length of 20. Every minute, 10 more customers are added to the line. As this is meant to be a FIFO queue the first 11 customers in the line will be distrusted among the 5 bank tellers as follows: Teller #1 will process 1 customer per minute, Teller #2 and #3 can each process 2 customers per minute, and Teller #4 and #5 can each process 3 customers per minute. Therefore, the first 11 customers in line will be processed within the first minute of the programs execution.
Unfortunately, I am not sure how to attack this thing. I am thinking that I need to setup a queue for the initial 20 customers and an array for the 10 customers that will be joining the line every minute. However, I am not sure how I can set this up to work automatically.
i'm trying to construct a deadlock deliberately by coding this scenario:
1) Thread A enters a synchronized method of object foo
2) Thread A goes to sleep (thus still holding the key of foo)
3) Thread B enters a synchronized method of object bar
4) Thread B tries to enter a synchronized method of foo (, but cant)
5) Thread A wakes up and tries to enter a synchronized method of bar => deadlock
I'm trying to keep the code really minimalistic, i.e. just 2 threads and 2 objects.
I also dont want to use this syntax:
synchronized(a){
...
}
but would like to achieve this just by calling synchronized methods of 2 different objects (as stated above).
is it possible to avoid deadlock while coding..
View Replies View RelatedThis is my own coding for understanding deadlock in multithreading . But my doubt is whether this program mirrors the concept of deadlock perfectly or not. If not what should i do to make this code a perfect deadlock.
import java.io.*;
class A
{
B bc;
synchronized void funcA(B b)
{
bc=b;
System.out.println("INSIDE FIRST OBJECTS MONITOR");
[Code] ....
How can we create deadlock condition on our servlet? Does calling doGet() from doPost() and vice versa really cause a deadlock? Or, does it cause a StackOverflowException?
View Replies View RelatedI am unable to open Pogo Poker with out receiving an error message saying "Oops, Java is not detected on your computer" (or something similar). I have reinstalled it several times and get the same results.
View Replies View RelatedSo I need to write a program that reads through a String and counts how many vowels there are and prints them out as it finds them. This is what I have so far:
if (vowel == 'a' || vowel =='e' || vowel =='i' || vowel == 'o' || vowel == 'u'){
numberOfVowels++;
}
The problem is that I can't figure out how to print out the character once it detects it as a vowel.
I've downloaded the Windows version of Java Commnunication API from java.sun.com. I extracted the zip file, placed the comm.jar at c:j2sdk1.4.0jrelibext folder.After that, i wrote a simple program to test whether i can get any serial/parallel port object from CommPortIdentifier.getPortIdentifiers();. It returns an empty enumeration, meaning that none of my ports are detected.
However I have checked that com1 port is exist using hyperterminal. I have RFID card reader and I am trying to read data from rfid card.
While executing my application i came across with this unexpected error which i don't know why?
#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x000007fdcacd79a9, pid=4980, tid=7724
#
# JRE version: Java(TM) SE Runtime Environment (7.0_45-b18) (build 1.7.0_45-b18)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (24.45-b08 mixed mode windows-amd64 compressed oops)
# Problematic frame:
# C [ntdll.dll+0x79a9]
#
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#
# If you would like to submit a bug report, please visit: [URL} .....
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
I've a vertical-bar-delimited file where most elements contain text, some contain whitespace, and some are empty. Examples:
62RG|fe|Pencil Financial Group, LLC||doug@pencil.com|||85637889|Cross, Ben|bcross@godaddy.net|Bernard|Cross|Ben||315 One Tree Hill Terrace|Lafayette|LA
62RG|fe|Pencil Financial Group, LLC||tracy@pencil.com|||13658734|Dustin Cardwright|dcart@motorola.com|Dustin|Cartwright|||| |LA
which I parse and store with
String str_arry = innline.split( "|", 17);
lisst.add( new Contact( str_arry));
and my Contact class has the constructor
public Contact( String[] str_arry) {
for( int ii = 0 ; ii < str_arry.length ; ii++ ) {
if( str_arry[ii].matches("^s+$")) {
str_arry[ii] = null;
System.out.println("hit a null");
[Code]...
I expect the for-loop in the constructor to find any elements containing whitespace characters and set them to null for subsequent assignment.And when the code runs I do see some hit-statements pop up, so the detecting part is working.
But when I then process the list and access a Contact object and test fields for nulls I don't find any ie
if( aContactObj.getfFCity() == null) System.out.println("city is null");
never prints when it should.
What's the trick? Or is my approach wrong and if so what should it be?
I have inherited some code that is supposed to work just fine. The trouble is that when everything is rebuilt on my desktop, the projects crash. They all seem to crash at one particular part of code. I pass it a string and the "getResource" or "getContentClassLoader" is failing.
[URL] ....
I guess one way to tackle this is to break it apart into segments.
I have a entry in application.properties file
caption_bubble_value.title={0} is a caption for the element box
JSP File
<fmt:message key="caption_bubble_value.title" />
in the java file I am setting a parameter to session
request.getSession().setAttribute("replaceVal", "Value headline");
How can I get the text "Value headline is a caption for the element box" on the page?
The replacement should happen on an event.
Im debugging a code that has the following setting:
<application>
<message-bundle>com.web.resources</message-bundle>
<locale-config>
<default-locale>en_US</default-locale>
<supported-locale>fr_FR</supported-locale>
</locale-config>
<resource-bundle>
<base-name>com.web.resources.message</base-name>
<var>message</var>
</resource-bundle>
</application>
Just want to ask, for example I have message_en_US.properties and message_en_SG.properties.And the web is currently using the SG property but one property is not exist on it, can I just redirect to use the US property?
I have inherited some code that is supposed to work just fine. The trouble is that when everything is rebuilt on my desktop, the projects crash. They all seem to crash at one particular part of code.
I pass it a string and the "getResource" or "getContentClassLoader" is failing.
[URL] ....
I guess one way to tackle this is to break it apart into segments.
My application suppose to work with different languages. I have created different messageResource bundle file for each language. However, as we are adding more features, the resource files for each language becoming very long, which makes it difficult to manage (edit) for non-techy person. Therefore, I would like to know, how can I redesign or remodularize in such a way that it will be easy to manage for Content Writers? Can I redesign my bundle resources based on application pages?
View Replies View RelatedI have inherited some code that is supposed to work just fine.
The trouble is that when everything is rebuilt on my desktop, the projects crash.
They all seem to crash at one particular part of code.
I pass it a string and the "getResource" or "getContentClassLoader" is failing.
[URL] ....
I guess one way to tackle this is to break it apart into segments.
I have inherited some code that is supposed to work just fine. The trouble is that when everything is rebuilt on my desktop, the projects crash. They all seem to crash at one particular part of code. I pass it a string and the "getResource" or "getContentClassLoader" is failing.
View Replies View RelatedWhen I run my code that's appear :
/catalogomercado/comum/ExibeMensagem.jsp
the request resource is not available.
But I don't have ExiBeMensagem.jsp in web pages....
I don't seem to be hitting my RESTful webservices. I am using Hibernate and checked and all my entity classes are working. I've even retrieved data from the database but I cannot hit the web service. I am using Tomcat 7 and Eclipse IDE.
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>HibEx1</groupId>
<artifactId>HibEx1</artifactId>
[Code] .....
I have a web xml but there is really nothing in it. The url i am wanting to hit is [URL] ..... Is this a correct URL?
I also tried changing my Path to "/service" and that did not work either. I am getting a Http Status 404 "The requested resource is not available.
i have one html page through which i want to go to servlet page but after submit it give the http 404 error.
i am using tomcat apache server.
In my application i'm using java.util.ResourceBundle class. This is not serialized. My application works perfectly in a single node. But if i moved it to clustered mode resource bundle object will not be replicated to other server becasue it's not serializable.
View Replies View Relatedi was i a program for Execute JSP Page.Inside Tomcat Conf Server File i add following path:
<Context path = "JSPTEST"
docBase="D:Tomcat 8.0webappsJSPTEST">
</Context>
</Host>
</Engine>
</Service>
</Server>
and this is my Jsp page program:
<html>
<head>
<title>Hello World Example in Jsp</title>
</head>
<body>
<h1>
[code]....
but same error is repeting:The request resourse is not available.
In our product, we have many different of "roles". Some of these roles are defined in our dataload JSON and others are defined in our bootstrap SQL.
Throughout our code, we refer to specific roles by name. We want to provide some sort of documentation for these roles when we mention them in documentation, but we don't want to maintain multiple definitions/descriptions for these roles (ie: we don't want one for documentation and a separate one for execution).
Any way we can "expose" the role definitions to the documentation? The best thing I've got is adding some sort of "export script" to each generation of the javadocs, but I don't have a clue how, or if, that can even be done...
"citizen":{"name":"John", "gender":"M","age":32}
Now, I only want to change age to 35, which method should I use and how should the payload/URL look like to be RESTful?
Should I read a .txt file saved as a resource but JavaFX 2.2 doesn' t find the resource " myfile.txt " with the following statement:
new BufferedReader(new FileReader(ReadTextFile.class.getResource("prova.css").toExternalForm()));
How can I solve it?