Problem with java stored procs.

Is there a restriction on accessing XML documents from Java stored procs?
I have a Java program to parse XML document and return a string. If I run this program as a stand alone, the program runs fine.
I loaded the oracle xmlparser.jar into ORACLE8i db sucessfully (used -resolve option). Then I loaded my .class file with -verbose and -resolve option and I did not get any erros. I created function which return string. When I ran the function, I did not get any value bacmk.
Can I use System.out.println in java programs in ORACLE8i. If I can where can I see the output when the program runs? I not waht other mehtods I can use to debug the program running in ORACLE8i JVM.
Thank You

Hello again,
I read the documentation of 9i and found some hints about different TCP/IP socket handling of 9i and a standard JVM.
There are some parts that give hints but I couldn't find a sample code to show how to handle the differences.
Could anyone tell me how to handle the differences or give some links to sample code?
Thanks
Detlev

Similar Messages

Performance problem with java stored procedure

hi,
i developped a java class, then I stored it in Oracle 8.1.7.
This class contains several import of other classes stored in the database.
It works, but the execution perfomances are disappointing. It's very long. I guess, that's because of the great number of classes to load that are necessary for my class execution.
I tried to increase the size of the java pool (I parameter 70 Mo in the java_pool_size parameter of the init.ora), but the performance is not much better.
Has anyone an idea to increase the performance of this execution of my class ?
In particular, is there a way to keep permanently in memory the java objects used by my class ?
Thanks in advance
bye
[email protected]
null

before running Java, the database session needs to be Java enabled; this might be the reason why it is taking so long. If this is the case, you should see an improvement in subsequent calls, once a database session is Java enabled, other users can benefit from it.
Kuassi
I have some performance issue with java stored procedure. Hope some one will be able to help me out. I'm using java stored procedures in my application and basically these procedures are used to do some validation and form the XML message of the database tables. I have noticed that when I call the PL/SQL wrapper function, it is taking time to load the java class and once the class is loaded the execution is faster. Most of the time is spent for loading the class rather than executing the function. if I reduce the class load time, I can improve the performance drastically. Do any one of you know how to reduce the class load time. The following are the platform and oracle version.
O/S: IBM AIX
Oracle: 8.1.7

Problems with java stored procedure.

I have a java stored procedure that uses a package called RmiJdbc
which allows calling remote JDBC data sources from any java capable
machine.
I've loaded the RmiJdbc classes into oracle via the loadjava
command and everything seems to come up valid.
The stored procedure does a Class.forName() to get the driver
registered, than attempts to connect to the remote RMI driver.
The particular line it dies on is this (see the error below):
c = DriverManager.getConnection("jdbc:rmi:" + rmiHost + "/" + url);
A mangled version of this (minus the Oracle specific stuff) works
from the command line correctly. Can somebody point me in a
direction to figure out what's going on here?
THanks,
Eric
Oracle9i Enterprise Edition Release 9.0.1.3.0 - 64bit Production
With the Partitioning option
JServer Release 9.0.1.3.0 - Production
ORACLE_HOME = /oracle/v901ee
System name: HP-UX
Node name: athena
Release: B.11.00
Version: A
Machine: 9000/889
Instance name: PASDB2
Redo thread mounted by this instance: 1
Oracle process number: 13
Unix process pid: 7839, image: oracle@athena (TNS V1-V3)
*** SESSION ID:(8.547) 2002-08-15 15:41:27.221
java.rmi.UnmarshalException: Error unmarshaling return; nested exception is:
java.lang.NullPointerException
java.lang.NullPointerException
at sun.rmi.server.LoaderHandler$LoaderKey.<init>(LoaderHandler.java)
at sun.rmi.server.LoaderHandler.lookupLoader(LoaderHandler.java)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java)
at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java)
at java.io.ObjectInputStream.inputClassDescriptor(ObjectInputStream.java)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java)
at java.io.ObjectInputStream.inputArray(ObjectInputStream.java)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java)
at java.io.ObjectInputStream.inputClassFields(ObjectInputStream.java)
at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java)
at java.io.ObjectInputStream.inputObject(ObjectInputStream.java)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java)
at sun.rmi.registry.RegistryImpl_Stub.lookup
at org.objectweb.rmijdbc.RJConnection.<init>(RJConnection:83)
at org.objectweb.rmijdbc.Driver.connect(Driver:135)
at java.sql.DriverManager.getConnection(DriverManager.java)
at java.sql.DriverManager.getConnection(DriverManager.java)
at TurnoverInfoPlusInterface.insertInterfaceRecords(TurnoverInfoPlusInterface:53)
java.sql.SQLException: Error unmarshaling return; nested exception is:
java.lang.NullPointerException
at org.objectweb.rmijdbc.Driver.connect(Driver:140)
at java.sql.DriverManager.getConnection(DriverManager.java)
at java.sql.DriverManager.getConnection(DriverManager.java)
at TurnoverInfoPlusInterface.insertInterfaceRecords(TurnoverInfoPlusInterface:53)

More info...I'm also seeing "ORA-03113: end-of-file on communication channel". I checked the user trace file and didn't get much help...it indicated an "exception signal: 11" and core-dump type stuff that had no meaning to me.

Perfomance problem with java stored procedure

hi,
i developped a java class, then I stored it in Oracle 8.1.7.
This class contains several import of other classes stored in the database.
It works, but the execution perfomances are disappointing. It's very long. I guess, that's because of the great number of classes to load that are necessary for my class execution.
I tried to increase the size of the java pool (I parameter 70 Mo in the java_pool_size parameter of the init.ora), but the performance is not much better.
Has anyone an idea to increase the performance of this execution of my class ?
In particular, is there a way to keep permanently in memory the java objects used by my class ?
Thanks in advance
bye
[email protected]
null

Hello again,
I read the documentation of 9i and found some hints about different TCP/IP socket handling of 9i and a standard JVM.
There are some parts that give hints but I couldn't find a sample code to show how to handle the differences.
Could anyone tell me how to handle the differences or give some links to sample code?
Thanks
Detlev

Java stored proc deploy problem

I get follow error,when I deploy Java stored proc with JDeveloper3.2.
Errors:
*** Errors occurred while loading the archive into 8i JVM ***
How can i do?
Thanks a lot!!

The problem is with the OUT parameters. If you read the documentation you will see that OUT parameters
need to be declared as one element arrays. Hence this should compile:
CREATE OR REPLACE PROCEDURE TEST ( id IN NUMBER,
i IN NUMBER,
j IN VARCHAR2,
ret1 OUT NUMBER,
ret2 OUT VARCHAR2,
k IN NUMBER) AS
LANGUAGE JAVA NAME 'com.fn.oracle.proc.trading.TestProcedure.testIt(int, double, java.lang.String, int[], java.lang.String[], int)';Cheers, APC

Parse XML in a java stored proc

I am trying to parse an xml document in a java stored procedure. Just following my nose, I have developed a stored proc that works fine in development (outside the database using JRE 1.4.1) using the Xerces 2.5 parser. But, after having transferred the xerces xercesImpl.jar, xmlapis.jar, and my implementation class into oracle using loadjava when I call my stored proc the code throws an exception trying to build the document with an error like:
NoClassDef exception org.apache.xerces.jaxp.DocumentFactoryBuilderImpl
My Code looks like this:
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.FactoryConfigurationError;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.xml.sax.SAXException;
InputStream is = getXMLAsInputStream(xml);
try {
DocumentBuilderFactory factory =
DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.parse( is );
... parse the document ....
catch (FactoryConfigurationError e) {
// unable to get a document builder factory
The exception caught is a FactoryConfigurtionError.
I'm not particularly attached to xerces, I'm really just looking for a way to parse XML inside my java stored proc, so any help to solve my problem, or an alternative suggestion will be greatly appreciated.
thanks
Dale

I looked again and sure enough the xerces implementation classes were missing. I had run a .cmd file containing these two lines, but it looks like only the first one ran...
loadjava -u ncc/xyz@usd -v -r M:\Database\JavaGeocode\Xerces2_5_0\xml-apis.jar
loadjava -u ncc/xyz@usd -v -r M:\Database\JavaGeocode\Xerces2_5_0\xercesImpl.jar
Now I've got everything working fine with Xerces!
Dale

Java stored proc status

hello.
What would trigger the change of "STATUS" from valid to invalid
for a java stored procedure (status of the PROCEDURE, not the
java class/source)?
E.g.
- loaded a java source/class
- published it with CREATE PROCEDURE ...
- the procedure inserts a row into some table X
- select* from user_objects where object_type = 'PROCEDURE'; shows that
the proc is valid
- call the proc, fine
- delete a column from the table X
- select* from user_objects where object_type = 'PROCEDURE'; shows that
the proc is still VALID
- call the proc, the call actually completed without error! (but the new row didn't get inserted into the table)
When the schema of a table that a java stored proc refers
to changes, will the java stored proc automatically marked
as "INVALID"? If not, when will this status changed from
VALID to INVALID?
Thanks.
Min

Min:
A java stored procedure is marked as VALID or INVALID depending on whether Oracle had any problems loading the class file into the database. Since you had no problems loading the class file it will always be valid.
Now, after you deleted the column in the table I would assume that the java stored procedure would have a problem when it tried to do an insert and it would throw an exception. Your java stored procedure is VALID, it just isn't executing properly and is more than likely throwing an exception.
Sometimes an exception thrown from a jsp is written to a log file instead of to the console. I suspect that this is the case in your situation. You think that the call to the jsp executed with no errors, but I bet it didn't. You will probably find the errors somewhere in the oracle\ora90\admin\mydatabase directory. Look at the latest .trc file. (Note: the path I gave to the .trc files may be different depending on what version of oracle you are using).

Java Stored Proc, passing BLOB, not stored in a table.

I have checked this article, and found it will not suit my needs.
http://otn.oracle.com/sample_code/tech/java/codesnippet/jdbc/lob/LobToSP.html
I have even looked at the 4 articles on the "JSP How-To Documents" page.
I need to pass in a BLOB to my Java Stored proc, but not store it in the DB - My java code manipulates the LOB and it should never go into the DB. I know I could do the normal store, get an id and pass to my JSP... but that is a poor way to implement this. Are there any code samples on how to do this please ?
D

WOW! That seems like a very bad design.
Is it just the compiler that has the problem or is the PL/SQL code inside the stored procedure also affected? For example, if I'm doing an
EXECUTE IMMEDIATE 'insert ... INTO OtherSchema.tblTest';
Is this going to be a problem?
The problem with granting the access explicitly is the Archive Schema, which has the stored procedure that is failing, might not exist at the time when the other schemas are created. Therefore, there is no user to grant permissions to. I solved this by granting permissions to the role and when the archive user is created it is assigned that role.
This seems like the proper way to solve this problem.

Can't execute OS-level command from java stored proc

I've written a couple simple java stored procs, the first of which writes an file and the second attempts a chown on it. I can write the file (which is written as the oracle user) just fine. I need to chown it, but can't. Here's the first proc:
public static String writefile()
String fileName = "/joetest/test.xml";
try {
File f = new File(fileName);
FileOutputStream out = new FileOutputStream(f);
PrintStream p = new PrintStream(out);
p.println("this is only a test");
p.close();
return "create file successful!!!";
} catch (Exception e) {
return "Exception occurred writing file:"+e;
Here's the proc I've been stuggling with:
public static String chown(String inString)
String[] command = {"/bin/sh", "-c", "/usr/bin/chown notjoe /joetest/test.xml"};
if (inString != null) {
command[2] = inString;
try {
Process p = Runtime.getRuntime().exec(command);
return "Ownership change success!! "+p;
} catch (Exception e) {
return "Ownership change failure?? err="+e;
The package is created with:
CREATE OR REPLACE PACKAGE JOE.THISISATEST AS
FUNCTION writefile
return VARCHAR2
AS
LANGUAGE java
NAME 'thisisatest.writefile() return java.lang.String';
FUNCTION chown(Param1 VARCHAR2)
return VARCHAR2
AS
LANGUAGE java
NAME 'thisisatest.chown(java.lang.String) return java.lang.String';
end;
And I've granted the following privileges:
begin
dbms_java.grant_permission('JOE', 'java.io.FilePermission', '/joetest/test.xml', 'read, write, execute, delete');
end;
begin
dbms_java.grant_permission('JOE', 'java.io.FilePermission', '/usr/bin/chown', 'execute');
end;
begin
dbms_java.grant_permission('JOE', 'SYS:java.lang.RuntimePermission', 'writeFileDescriptor', '');
end;
begin
dbms_java.grant_permission('JOE', 'SYS:java.lang.RuntimePermission', 'readFileDescriptor', '');
end;
Here's the error that I'm getting:
ORA-06502: PL/SQL: numeric or value error: character string buffer too small
Coincidentally, this is the same error that I used to get when I wrote the file without having been granted write privileges. Once I granted myself the proper 'write' permissions I could perform file IO just fine. Is there some runtime permission that I need to grant myself to run chown? I'm just guessing, as I can't find any permission like that in the java documentation. I have 'execute' permission on /usr/bin/chown and the oracle user can execute the command I'm attempting from the command line. ARRRRRGH.
I am at my wits end with this. I've tried what seems like a thousand different syntaxes for the OS command and ran it from many different directories. Anyone have any thoughts at all as to why this is happening? I'm just clutching at straws now...

Hmmmm. Granting 'execute' on '<<ALL FILES>>' to user JOE fixes this problem:
begin
dbms_java.grant_permission('JOE', 'java.io.FilePermission', '<<ALL FILES>>', 'execute');
end;
My security folks will not allow this when I port to production, but at least it is something.
Message was edited by:
user603023

Calling an EJB deployed in OC4J from Java Stored Proc in Oracle

Hello!
Trying to make a call to an EJB deployed in OCJ4 from a oracle java stored proc. After loaded orion.jar and crimson.jar lib into SCOTT schema, I can't get the JNDI Context working because of this error:
============================================
javax.naming.NoInitialContextException: Cannot instantiate class:
com.evermind.server.ApplicationClientInitialContextFactory. Root exception is
java.lang.ClassNotFoundException:
com/evermind/server/ApplicationClientInitialContextFactory
at java.lang.Class.forName0(Class.java)
at java.lang.Class.forName(Class.java)
at com.sun.naming.internal.VersionHelper12.loadClass(VersionHelper12.java:45)
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java)
at javax.naming.InitialContext.init(InitialContext.java)
at javax.naming.InitialContext.<init>(InitialContext.java)
===============================
I did load the java with "loadjava" with on time with the "resolve" option and time time no option and still no working.
Here is the EJB client code:
=======================================
import java.sql.*;
import java.util.*;
import javax.naming.*;
import com.evermind.server.ApplicationClientInitialContextFactory;
class EmpRemoteCall {
public static void main(String[] args) {
System.out.println(getEmpName());
public static String getEmpName() {
String ejbUrl = "java:comp/env/ejb/Emp";
String username = "admin";
String password = "admin";
Hashtable environment = new Hashtable();
environment.put(Context.INITIAL_CONTEXT_FACTORY, "com.evermind.server.ApplicationClientInitialContextFactory");
environment.put(Context.PROVIDER_URL, "ormi://127.0.0.1/testemp");
environment.put(Context.SECURITY_PRINCIPAL, username);
environment.put(Context.SECURITY_CREDENTIALS, password);
//environment.put(Context.SECURITY_AUTHENTICATION, ServiceCtx.NON_SSL_LOGIN);
//environment.put(javax.naming.Context.URL_PKG_PREFIXES, "oracle.aurora.jndi");
com.kboum.sertir.essais.EmpHome homeInterface = null;
try {
Class.forName("com.evermind.server.ApplicationClientInitialContextFactory", true, ClassLoader.getSystemClassLoader());
System.out.println("Creating an initial context");
Context ic = new InitialContext(environment);
System.out.println("Looking for the EJB published as 'java:comp/env/ejb/Emp'");
homeInterface = (com.kboum.sertir.essais.EmpHome) ic.lookup(ejbUrl);
catch (CommunicationException e) {
System.out.println("Unable to connect: " + ejbUrl);
e.printStackTrace();
//System.exit(1);
catch (NamingException e) {
System.out.println("Exception occurred!");
System.out.println("Cause: This may be an unknown URL, or some" +
" classes required by the EJB are missing from your classpath.");
System.out.println("Suggestion: Check the components of the URL," +
" and make sure your project includes a library containing the" +
" EJB .jar files generated by the deployment utility.");
e.printStackTrace();
//System.exit(1);
catch (ClassNotFoundException e) {
System.out.println("Unable to connect: " + ejbUrl);
e.printStackTrace();
//System.exit(1);
try {
System.out.println("Creating a new EJB instance");
com.kboum.sertir.essais.Emp remoteInterface = homeInterface.findByPrimaryKey(Integer.valueOf("7369"));
System.out.println(remoteInterface.getENAME());
System.out.println(remoteInterface.getSAL());
remoteInterface.setSAL(2);
System.out.println(remoteInterface.getSAL());
return remoteInterface.getENAME();
catch (Exception e) {
System.out.println(e.getMessage());
e.printStackTrace();
return "error";
null

What I did to solve this problem was to
create a simple RMI remote object that
resides outside the database JVM and that
serves as a proxy EJB client for your java
stored procedure. The stored procedure can
invoke a method on the remote RMI object
which then looks up the EJBean's home
interface and invokes the relevant method on
the bean's remote interface, and relays any
return values back to the java stored
procedure.
Hope this helps,
Avi.
null

XML Parsing in Java Stored Proc--Oracle XML Support Installation?

I am working with a third party product that is having difficulty running a java stored proc that is parsing a supplied XML file. The proc basically looks like:
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.FactoryConfigurationError;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.xml.sax.SAXException;
InputStream is = getXMLAsInputStream(xml);
try {
DocumentBuilderFactory factory =
DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.parse( is );
... parse the document ....
catch (FactoryConfigurationError e) {
// unable to get a document builder factory
We are running on 9.2.0.6, HP-UX 64-bit. At first, when we would attempt to run the proc, a database hang would occur; now after attempting to install using loadjava jars for xerces2.6: ORA-29532: Java call terminated by uncaught Java exception:
javax.xml.parsers.FactoryConfigurationError: Provider
org.apache.xerces.jaxp.DocumentBuilderFactoryImpl not found)
The vendor says that the errors we are getting when running are not due to any dependency on xerces or jre1.4, and that we need to "install Oracle XML support", but I'm not certain what this means (I cannot find any documentation on what to install). I believe that there are jars that need to be loaded into the database to support the XML parsing, as jre1.3 does not include built-in XML support, and Oracle 9.2.0.6 uses jre1.3.
So...does anyone have any thoughts as to how to resolve the missing references? Is there a way to "install Oracle XML support", or is it to install the necessary jars?
Thanks,
Candi

Candi,
The following resources should be of help:
Oracle9i Database Release 2 (9.2) Documentation Library
In particular, check out the following:
Java Developer's Guide
Java Stored Procedures Developer's Guide
XML API Reference - XDK and Oracle XML DB
XML Database Developer's Guide - Oracle XML DB
XML Developer's Kits Guide - XDK
If that doesn't help, then try the following:
OracleJVM and Java Stored Procedures
XML Technology Center
Good Luck,
Avi.

Java stored proc from proxy Java classes generated from a web service?

Hi gurus,
I have searched "Java Stored Procedure" on this forum but could not find what I am looking for, so I have to post again.
I need to use a web service and my client app is written in PowerBuilder 11 (Sybase), which claims that it will create a datawindow from a web service. Well, it turned out that PB can only handle simple stuff (it works with a very simple wsdl from the internet) but can't handle more complex ones that we need to use. So I am thinking about using Oracle JDeveloper(JDev) to create the web service proxy for the web service and then load it into Oracle as a Java stored procedure so that PowerBuilder can call the procedure. JDev succsfully generated the proxy and a few Java classes. My question is, do I need to load all the classes into the database? If yes, will the reference to the package work? For example, in a JDev generated class (the soap client class), it has package MyJdev.proxy; at the top. Or, will it work if I load all the classes included in package /MyJdev/proxy into the database?
Thank you very much for any help.
Ben

For the java stored proc called from pl/sql, the example above that uses dynamic sql should word :
CREATE OR REPLACE PACKAGE MyPackage AS
TYPE Ref_Cursor_t IS REF CURSOR;
FUNCTION get_good_ids RETURN VARCHAR2 ;
FUNCTION get_plsql_table_A RETURN Ref_Cursor_t;
END MyPackage;
CREATE OR REPLACE PACKAGE BODY MyPackage AS
FUNCTION get_good_ids RETURN VARCHAR2
AS LANGUAGE JAVA
NAME 'MyServer.getGoodIds() return java.lang.String';
FUNCTION get_plsql_table_A RETURN Ref_Cursor_t
IS table_cursor Ref_Cursor_t;
good_ids VARCHAR2(100);
BEGIN
good_ids := get_good_ids();
OPEN table_cursor FOR 'SELECT id, name FROM TableA WHERE id IN ( ' | | good_ids | | ')';
RETURN table_cursor;
END;
END MyPackage;
public class MyServer{
public static String getGoodIds() throws SQLException {
return "1, 3, 6 ";
null

ORA-03113 error when running the Java stored proc demos

Hi there,
Has anyone else run into this issue. When attempting to transfer an object type from Java to Oracle - through a Java stored proc - the session crashes with:
ORA-03113: end-of-file on communication channelLooking in the trace file generated the error message looks something like:
ksedmp: internal or fatal error
ORA-07445: exception encountered: core dump [0x8fe04468] [SIGTRAP] [unknown code] [0x8FE59034] [] []
Current SQL statement for this session:
select pointruntime.jdistance(point(1, 2), point(2, 3)) from dual
----- Call Stack Trace -----
calling              call     entry                argument values in hex
location             type     point                (? means dubious value)
ksedmp+764           call     ksedst               0 ? 2C4F4A ? 2C ? 98968000 ?
                                                   DB02C ? 27A50000 ?
ssexhd+956           call     ksedmp               3 ? 0 ? 8FE5E790 ? 5905870 ?
                                                   8FE0434C ? 40895E4 ?
0x9012c860           call     ssexhd               5 ? BFFEEF70 ? BFFEEFB0 ? 0 ?
                                                   0 ? 0 ?As you can see from the trace snippet above, I was attempting to run one of the Oracle Java stored procedure demos. Has anyone successfully run those demos? Specifically the ones where complex types (table objects or the Point object) are passed back to Oracle from the JVM.
I would appreciate some help with this. The code works fine in a Windows or Solaris environment but barfs on Apple. Truly annoying....
Anyone?
Thanks in advance,
Alex

Yes,
Apologies for not stating that information, Steve. Was a bit naughty of me! I guess the reason I didn't was because I just wanted to hear if anyone else running Oracle on Mac received such errors when executing the Java stored proc demos (specifically, the execution of PointRuntime.jDistance). Nevertheless, here's the relevant info from the trace file:
Dump file /Users/oracle/admin/sandbox/udump/sandbox_ora_1861.trc
Oracle Database 10g Enterprise Edition Release 10.1.0.3.0 - Production
With the Partitioning, Oracle Label Security, OLAP and Data Mining Scoring Engine options
ORACLE_HOME = /Users/oracle/product/10.1.0/db
System name:     Darwin
Node name:     maczilla.local
Release:     8.3.0
Version:     Darwin Kernel Version 8.3.0: Mon Oct 3 20:04:04 PDT 2005; root:xnu-792.6.22.obj~2/RELEASE_PPC
Machine:     Power Macintosh
Instance name: sandbox
Redo thread mounted by this instance: 1
Oracle process number: 10
Unix process pid: 1861, image: [email protected] for the Java version, according to the readme file in the javavm directory, I am running 1.4.1:
1.5 Java Compatibility
This release has been thoroughly tested with Sun's Java Compatibility
Kit for the JDK 1.4.1. Oracle is committed to OracleJVM keeping pace
with Java and other Internet standards.

Problem with Java and Windows (Mainly Vista and UAC)

Hi all,
I am having a problem with a program that I've devoloped. The program itself is packaged as a jar and I plan to deploy it across multiple platforms eventually however right now i am only concerned about windows based systems. I have made an installer for a windows baised systems using NSIS to install the software files. I made the installer as I need several java packages to be installed so the program would work (JAI, J3D, JAI ImageIO) and I also require the program to have fileassociations on windows.
I know that this is not what java is about, however the majority of the users will be on windows baised systems so I've decided that OS specific installers is the best option.
During the process I have noticed that there are several key problem with java for this type of application!
The first issue that I have come across is getting file associations to work on java. As a .jar is not an excutable it is not possible to directly associate a filetype with it in java so to overcome this I currently run the program from a .bat files and also the program requires large memory so this also allows me to run the program with -xmx. The batch file that I use is :
<code>
cd PATH TO PROGRAM
start javaw -Dsun.java2d.noddraw=true -Xmn100M -Xms500M -Xmx1000M -jar "PATH TO PROGRAM\program.jar" %1 -vram 134217728
pause;
</code>
Ok so all this appears to work fine and allows windows to have file associations and start the program and thats all works perfectly but this is a non-ideal solution. Has anyone got any advice on improving this?
The next problem that I have appears to be a problem with Vista and UAC (user access control). When a user installs the program and installs the program into the program files directory I found that the program did not work and kept saying that I did not have access to the files in the current directory. This is a problem as I read and write settings files during program execution.
On a Vista system UAC prevents file write operations into the Program Files directory unless the program has requested elevated status even if the user is a full administrator. The probem is that there appears to be no real way to achieve this under java that I'm aware of...
Has anyone else had this probem and has a suitable solution?
Any advice on these issues would realy be appricated.
Regards
Joey

Ok so i've kinda found a solution, its not ideal but its very good. I found this program called Elevate
A link to the site I got it was
http://www.wintellect.com/cs/blogs/jrobbins/archive/2007/03/27/elevate-a-process-at-the-command-line-in-vista.aspx
This program allows you start java with a UAC dialog for high access using
Elevate java -jar myjar.jar
This then allows you to have full access using java... I guess it could be dangerous but it does the job.

Problem with java and pogo games

i use mozilla and now with the problems with java and hackers cannot play my pogo games,what can i do? i disabled my java i tried java 6 doesnt work or is not safe,what is a safe way to play games on pogo that use java?

Oracle has released a Java 7 Update 11 to address security vulnerabilities and you should update to that version.
*https://support.mozilla.org/kb/how-to-use-java-if-its-been-blocked
See also:
*http://kb.mozillazine.org/Java#Windows_installation_issues
You can find the latest Java version on the Oracle website.
See Java Platform > Java SE 7U11 and Java 6U38 (Download JRE)
*http://www.oracle.com/technetwork/java/javase/downloads/index.html

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