Why it is so slow using toplink JPA in applet or webstart

I use jpa in the applet,but it is too slow to initialize the toplink jpa.
It takes about 80 seconds to execute this method:
EntityManagerFactory factory=Persistence.createEntityManagerFactory("unit");
The applet/webstart has the security authorization.
I even modify the java.policy file to give the applet AllPermission.
How could I fix this?
thx for u help.
with regards

To test if it is jpa's problem.
I create a new desktop project and didn't use toplink JPA.
It performace good. But if I use JPA in this project.It became so slow.
as I said before. I have give the programme authorization to run.
Can anyone help.
Even when I change to openJPA.It just performace a little faster.
cause the project is nearly finished,I can't replace JPA in the project.It cost too much time that I can't afford.
I don't know what is the problem.
Please help.
thank you.

Similar Messages

Useing toplink jpa in jdev11 and mysql4,but meet the DatabaseException

Hello everyone,I'm useing toplink jpa in jdev11 and mysql4.I create a class from database success.Then I use "Java Service Facade" to create a class called JavaServiceFacade sucess.Then I add some code:
System.out.println(javaServiceFacade.queryCnationalityFindAll().size())
in main
then I run the program,but I got this error:
xception in thread "main" Local Exception Stack:
Exception [TOPLINK-4002] (Oracle TopLink Essentials - 2.0 (Build b41-beta2 (03/30/2007))): oracle.toplink.essentials.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: [Microsoft][ODBC 驱动程序管理器] 未发现数据源名称并且未指定默认驱动程序
Error Code: 0
     at oracle.toplink.essentials.exceptions.DatabaseException.sqlException(DatabaseException.java:290)
     at oracle.toplink.essentials.sessions.DefaultConnector.connect(DefaultConnector.java:87)
     at oracle.toplink.essentials.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:170)
     at oracle.toplink.essentials.internal.databaseaccess.DatasourceAccessor.connect(DatasourceAccessor.java:218)
     at oracle.toplink.essentials.internal.databaseaccess.DatabaseAccessor.connect(DatabaseAccessor.java:227)
     at oracle.toplink.essentials.internal.databaseaccess.DatasourceAccessor.connect(DatasourceAccessor.java:294)
     at oracle.toplink.essentials.threetier.ConnectionPool.buildConnection(ConnectionPool.java:102)
     at oracle.toplink.essentials.threetier.ConnectionPool.startUp(ConnectionPool.java:324)
     at oracle.toplink.essentials.threetier.ServerSession.connect(ServerSession.java:443)
     at oracle.toplink.essentials.internal.sessions.DatabaseSessionImpl.login(DatabaseSessionImpl.java:571)
     at oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:208)
     at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:212)
     at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:78)
     at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:111)
     at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:105)
     at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:76)
     at project6.JavaServiceFacade.getEntityManager(JavaServiceFacade.java:23)
     at project6.JavaServiceFacade.queryCnationalityFindAll(JavaServiceFacade.java:72)
     at project6.JavaServiceFacade.main(JavaServiceFacade.java:18)
Caused by: java.sql.SQLException: [Microsoft][ODBC 驱动程序管理器] 未发现数据源名称并且未指定默认驱动程序
     at sun.jdbc.odbc.JdbcOdbc.createSQLException(JdbcOdbc.java:6958)
     at sun.jdbc.odbc.JdbcOdbc.standardError(JdbcOdbc.java:7115)
     at sun.jdbc.odbc.JdbcOdbc.SQLDriverConnect(JdbcOdbc.java:3074)
     at sun.jdbc.odbc.JdbcOdbcConnection.initialize(JdbcOdbcConnection.java:323)
     at sun.jdbc.odbc.JdbcOdbcDriver.connect(JdbcOdbcDriver.java:174)
     at java.sql.DriverManager.getConnection(DriverManager.java:525)
     at java.sql.DriverManager.getConnection(DriverManager.java:140)
     at oracle.toplink.essentials.sessions.DefaultConnector.connect(DefaultConnector.java:85)
     ... 17 more
there's some chinese you may not know,that means there's something wrong with
Microsoft odbc.I'm puzzle of that:I'm useing java+mysql,why there's wrong with odbc???
thank you very much
(maybe it's jdev11 technical preview edition so it can't work?)

HI
can you reply the feedback of metalink? because I'm having similar problem.
I debug in junit and embebbed at the jdev and it works well, but when I deploy in a standalone oc4j it gives me the same error of Excepção de E/S: The Network Adapter could not establish the connection
And I'm not using 11g, I'm still in 10g but the problem might be the same.
cumps
DnlCY
null

Couldn't persist OneToMany JoinColumn/JoinTable (Unidir) using TopLink JPA

Hi All,
I am having a lot of difficulty deploying a OneToMany Unidirectional (Zipcode) record which consist of multiple Zipnames using TopLink on Glassfish v2r2, JDK1.6.0_06, MySQL 5.0, Netbeans 6.1 and Windows XP platform.
Below are the relevant EJBs snippets:
Zipcode class
@Entity
@Table(name="ZIPCODE")
public class Zipcode implements Serializable {
@OneToMany(cascade={CascadeType.ALL}, fetch=FetchType.EAGER)
@JoinColumn(name="ZIPCODE_ID")
             or
    @JoinTable(name="ZIPCODE_ZIPNAME",
               joinColumns={@JoinColumn(name="ZIPCODE_ID")},
               inverseJoinColumns={@JoinColumn(name="ZIPNAME_ID")})
    private Collection<Zipname> zipnames = new ArrayList<Zipname>();
    public Collection<Zipname> getNames()
     return zipnames;
    public void setZipnames(Collection<Zipname> zipnames)
     this.zipnames = zipnames;
Zipname class does not maintain relationship back to Zipcode.
public class ZipcodeApplicationClient {
@PersistenceContext(unitName="GeographicalDB-PU")
private static EntityManager manager;
    public ZipcodeApplicationClient() {
    public static void main(String[] args) {
        try {
            Zipcode zipcode_1 = new Zipcode();
            zipcode_1.setcode(9001);
            Zipname zipname_1 = new Zipname();
            zipname_1.setName("Harbour Cove");
            zipcode_1.getNames().add(zipname_1);
            // Can add one Zipname record with JoinTable but not JoinColumn
            Zipname zipname_2 = new Zipname();
            zipname_2.setName("Wonderland");
            zipcode_1.getNames().add(zipname_2);
            manager.persist(zipcode_1);   // line 45
The same deployment error message below was generated from both JoinColumn and JoinTable methods:
run-deploy:
run-display-browser:
run-ac:
Copying 1 file to C:\Documents and Settings\Jack\GeographicalBean\dist
Caught an unexpected exception!
java.lang.NullPointerException
        at client.ZipcodeApplicationClient.main(ZipcodeApplicationClient.java:45)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at com.sun.enterprise.util.Utility.invokeApplicationMain(Utility.java:266)
        at com.sun.enterprise.appclient.MainWithModuleSupport.<init>(MainWithModuleSupport.java:449)
        at com.sun.enterprise.appclient.MainWithModuleSupport.<init>(MainWithModuleSupport.java:259)
        at com.sun.enterprise.appclient.Main.main(Main.java:200)
run-InvestmentBean-app-client:The JoinColumn method would not work for one Zipname record. On the other hand, JoinTable approach would allow us to add a single Zipname record without error out.
Q1. Can you confirm whether TopLink JPA 1.0 (Glassfish v2r2) support OneToMany JoinColumn Unidirectional at all?
Q2. Does TopLink JPA 1.0 (Glassfish v2r2) support OneToMany JoinTable Unidirectional? If so, what is the cause of this issue? Otherwise, please make appropriate recommendation steps to take.
This question has been posted on http://forums.sun.com/thread.jspa?threadID=5330670&tstart=0 and http://saloon.javaranch.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic&f=78&t=004489&p=1 earlier in the hope a quicker response.
Your guidance would be very much appreciated.
Many thanks,
Jack

Hi,
Below are some more error output from the OneToMany JoinTable Unidirectional approach:
pre-run-deploy:
Initial deploying InvestmentBean to C:\Documents and Settings\abc\InvestmentBean\dist\gfdeploy
Completed initial distribution of InvestmentBean
Start registering the project's server resources
Finished registering server resources
moduleID=InvestmentBean
deployment started : 0%
deployment finished : 100%
Deploying application in domain completed successfully
Trying to create reference for application in target server completed successfully
Trying to start application in target server completed successfully
WARNING:
JDO76614: Deployment encountered SQL Exceptions:
JDO76609: Got SQLException executing statement "CREATE TABLE ZIPCODE (ID INTEGER NOT NULL, DIALING_CODE VARCHAR(255), TIME_ZONE VARCHAR(255), CODE INTEGER, NEAREST_AIRPORT VARCHAR(255), LONGITUDE VARCHAR(255), NEAREST_TRAIN_STATION VARCHAR(255), NEAREST_URBAN_CENTRE VARCHAR(255), HOTELS VARCHAR(255), LATITUDE VARCHAR(255), NEARBY_FEATURES VARCHAR(255), COUNCIL VARCHAR(255), LOCALITY VARCHAR(255), PRIMARY KEY (ID))": com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'zipcode' already exists
JDO76609: Got SQLException executing statement "CREATE TABLE ZIPCODE_ZIPNAME (ZIPCODE_ID INTEGER NOT NULL, ZIPNAME_ID INTEGER NOT NULL, PRIMARY KEY (ZIPCODE_ID, ZIPNAME_ID))": com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'zipcode_zipname' already exists
JDO76609: Got SQLException executing statement "CREATE TABLE ZIPNAME (ID INTEGER NOT NULL, NAME VARCHAR(255), PRIMARY KEY (ID))": com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'zipname' already exists
JDO76609: Got SQLException executing statement "ALTER TABLE ZIPCODE_ZIPNAME ADD CONSTRAINT FK_ZIPCODE_ZIPNAME_ZIPCODE_ID FOREIGN KEY (ZIPCODE_ID) REFERENCES ZIPCODE (ID)": java.sql.SQLException: Can't create table '.\geographicaldb\#sql-434_4.frm' (errno: 121)
JDO76609: Got SQLException executing statement "ALTER TABLE ZIPCODE_ZIPNAME ADD CONSTRAINT FK_ZIPCODE_ZIPNAME_ZIPNAME_ID FOREIGN KEY (ZIPNAME_ID) REFERENCES ZIPNAME (ID)": java.sql.SQLException: Can't create table '.\geographicaldb\#sql-434_4.frm' (errno: 121)Enable of InvestmentBean in target server completed successfully
Enable of application in all targets completed successfully
All operations completed successfully
post-run-deploy:
run-deploy:
run-display-browser:
run-ac:
Copying 1 file to C:\Documents and Settings\Jack\GeographicalBean\dist
Caught an unexpected exception!
java.lang.NullPointerException
at client.ZipcodeApplicationClient.main(ZipcodeApplicationClient.java:45)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.sun.enterprise.util.Utility.invokeApplicationMain(Utility.java:266)
at com.sun.enterprise.appclient.MainWithModuleSupport.<init>(MainWithModuleSupport.java:449)
at com.sun.enterprise.appclient.MainWithModuleSupport.<init>(MainWithModuleSupport.java:259)
at com.sun.enterprise.appclient.Main.main(Main.java:200)
run-GeographicalBean-app-client:
run:
I would like to correct an earleir comment where I stated that this method did work when adding a single Zipname record. This is no true.
Thanks,
Jack

Why are MacBooks so slow using Wifi?

The irony is I've had to jump on my Windows PC to troubleshoot. Not a single issue with any device in the house connecting to the Wifi and using internet. Just the MacBook Air. Why hasn't Apple addressed this? I can see by the numerous posts and questions this is a very common issue that has been going on for years and the concerning thing is how many similar posts to mine don't seem to get resolved.
Feel duped by Apple and all the hype about their PCs versus Windows based PCs. Paid double for my laptop and yes it looks pretty and is nice and small, but if it doesn't work, it doesn't work. Isn't the point you don't have to be a computer geek to make these things run.
Too bad the laptops aren't as handy as the phones and IPads.
Dissapointed,

If MacBooks are inherently slow when using Wi-Fi then there is something wrong with all of mine, because they run like blazes.
kellyhasdogs wrote:
... I can see by the numerous posts and questions this is a very common issue that has been going on for years and the concerning thing is how many similar posts to mine don't seem to get resolved.
Your Mac obviously performed well when you bought it, or you would have either immediately returned it for a 100% refund or called AppleCare, who would have fixed it. If AppleCare is no longer an option for you then you have to provide specific details, ask others to help you, and then patiently wait for competent assistance. The only questions that remain unresolved are the ones that lack those requirements. There is an abundance of useful information on this site that will help, if you want to fix your problem and not just rant about it.
Specific guidance requires specific details - until you can provide them read the following:
OS X Mountain Lion: If your Mac runs slowly The article is very cursory, but be sure to read through to the end. Unfortunately the "Repair a disk" link at the end points to nothing useful, so use this one: Disk Utility.
General purpose Mac troubleshooting guide: Isolating issues in Mac OS X
Creating a temporary account to isolate user-specific problems: Isolating an issue by using another user account
Memory limitations: Using Activity Monitor to read System Memory and determine how much RAM is being used
Identifying resource hogs and other tips: Runaway applications can shorten battery runtime, affect performance, and increase heat and fan activity
To identify potential hardware problems: Apple Hardware Test
To resolve startup issues and perform disk maintenance, use Disk Utility.
Safe Mode or "Safe Boot" is a troubleshooting mode that bypasses all third party system extensions and loads only required system components. Read about it: Starting up in Safe Mode
To repair a potentially corrupt hard disk, so that you may recover its data prior to replacing it, and subsequently reinstall Mac OS X: OS X Recovery (applies only to Lion and later versions of OS X)

How to use a third party datasource in java se use toplink jpa?

because i am working on a desktop app, i don't have a container.So i can't use a JNDI provider;
but i want to use proxool or dbcp connection pool instead of toplink's connection pool.
how can i handle this?
thx for your help

Define a SessionCustomizer that assigns your data source::
public class MySessionCustomizer implements oracle.toplink.tools.sessionconfiguration.SessionCustomizer {
public void customize(Session session) throws Exception {
session.getLogin().setConnector(new oracle.toplink.jndi.JNDIConnector(myDataSource));
}Pass it to createEntityManagerFactory method as a property
Map props = new HashMap();
props.put("toplink.session.customizer", "MySessionCustomizer");

Why iphone4 cdma very slow using ios7

Recently I just bought iphone4 cdma then upgrade the os become os7, the problem is everything become slower, the motion isn't smooth, games become very slow and not working smoothly. What should I do? Can I downgrade it become os6?

Apple, please do us all a favor
Who are you talking to? We are not Apple. Apple doesn't read these posts.

Toplink JPA forces database table and column names to UPPERCASE! Why?

I have recently experienced using Toplink JPA while using glassfish ... migrating an existing application to EJB 3.0 persistence. Toplink JPA, as implemented in glassfish, forces tablenames and column names from my code to be uppercase in select statements, etc. as then submitted to the database. Why? I cannot find anything in the EJB 3.0 specs on persistence that even suggests this.
This created a serious problem for me, in my application. For my code to work I had to change the names of the database tables to all uppercase, even though that meant other of my applications, already written using the original mixed case names of the databases, will no longer work unless I revise the code in those applications! (I am using mySQL as my database.)
In both Unix/Linux and Java, which are both case sensitive, If I wanted names of files or other items to be uppercase, I would have written them that way. I do not expect some middleware piece of software to muck around with the case of text I have put into my code.
I am hopeful this 'feature' of the reference implementation of the EJB Persistence API will be corrected in a subsequent version. [Maybe you can tell I am not happy!]
Thanks for listening to my rant.

Robert,
I found that the name I specify in all of my @Table, @Column, ... annotations is used with the case as it is provided.
If TopLink determines the schema information through defaults then the names it comes up with are definitely upper cased by default.
Are you specifying the schema information that you want in annotations or XML?
Doug

TopLink JPA doesn't persist Clob field when useStringBinding

I'm using Toplink JPA on a JSF application deploying on Tomcat.
Everything works fine except the table with Clob field.
When insert data with size larger than 4KB, the error will occur.
I did some searching and I fixed this by using SessionCustomizer.
In my persistence.xml I put this
<property name="toplink.session.customizer" value="com.my.sessions.MySessionCustomizer"/>
and MySessionCustomizer is like this
public class MySessionCustomizer implements SessionCustomizer {
     public void customize(Session session) throws Exception {
          DatabaseLogin login = session.getLogin();
          login.useStringBinding();
          login.setShouldBindAllParameters(false);
          login.dontCacheAllStatements();
Things seem to work fine now but I found that Toplink does not persist the field that useStringBinding in database (Oracle 9i)
eg. when I update an object into a table which has 1 clob field and some other field like VARCHAR2, all the data in non-clob fields are stored perfectly in Oracle but the data in Clob field just gone blank. It just gone blank in the database but in my application, it's still there. I mean as long as my session is still alive, everything seems to work fine from the application side. But when I start a new session, the data in the Clob is lost because it's not in the database.
Why is this happening? Do I need to do anything extra when useStringBinding?
It seems to me that the field with StringBinding just don't get into the database.
Could somebody help me with this?

This is an issue with the Oracle thin JDBC driver in that it has a 4k limit for LOBS. The best workaround is to use the Oracle OCI JDBC driver, which does not have this limitation (I think this limitation was also improved in the Oracle 10.2 thin JDBC driver).
If you are using TopLink 10.1.3 a workaround to the JDBC issue is provided by using the Oracle9Platform and configuring the mapping for the CLOB to have a field-classification of java.sql.Clob.class.
If you are using TopLink Essentials unfortunately this support is not currently available. I believe there is already an issue logged for this in Glassfish. If you cannot use the OCI driver you may need to insert the CLOB data using direct JDBC code.

Toplink JPA with Coherence deployment to Weblogic 10.3

Hi,
I have created an EJB application using Toplink JPA and Coherence. I would like to deploy this application to Weblogic 10.3.
During the startup of Weblogic I have specified the Java option as
-Dtangosol.coherence.cacheconfig=D:/JDEV_11g/jdeveloper/jdev/mywork/CoherenceApp/CoherenceProject/src/META-INF/coherence-cache-config.xml.
Persistence.xml and coherence-cache-config.xml are palced inside the jar file.
When I execute the ejb client program, during the method call, I can see that coherence is started but it uses the cache-config from the coherence.jar file instaed of the value I have set during startup. How can I make weblogic use my cache-config.xml? I have included the log file entries from server:
[EL Finest]: 2009.04.17 05:33:48.625--UnitOfWork(1777337)--Thread(Thread[[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)',5,Pooled Threads])--Execute query ReadObjectQuery(coherenceproject.MetadataType)
2009-04-17 05:33:54.547/258.954 Oracle Coherence 3.4.2/411 <Info> (thread=[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)', member=n/a): Loaded operational configuration from resource "zip:D:/JDEV_11g/jdeveloper/jdev/mywork/CoherenceApp/lib/coherence.jar!/tangosol-coherence.xml"
2009-04-17 05:33:54.562/258.969 Oracle Coherence 3.4.2/411 <Info> (thread=[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)', member=n/a): Loaded operational overrides from resource "zip:D:/JDEV_11g/jdeveloper/jdev/mywork/CoherenceApp/lib/coherence.jar!/tangosol-coherence-override-dev.xml"
2009-04-17 05:33:54.562/258.969 Oracle Coherence 3.4.2/411 <D5> (thread=[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)', member=n/a): Optional configuration override "/tangosol-coherence-override.xml" is not specified
2009-04-17 05:33:54.578/258.985 Oracle Coherence 3.4.2/411 <D5> (thread=[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)', member=n/a): Optional configuration override "/custom-mbeans.xml" is not specified
Oracle Coherence Version 3.4.2/411
Grid Edition: Development mode
Copyright (c) 2000-2009 Oracle. All rights reserved.
*2009-04-17 05:33:55.750/260.157 Oracle Coherence GE 3.4.2/411 <Info> (thread=[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)', member=n/a): Loaded cache configuration from resource "zip:D:/JDEV_11g/jdeveloper/jdev/mywork/CoherenceApp/lib/coherence.jar!/coherence-cache-config.xml"*
2009-04-17 05:34:17.390/281.797 Oracle Coherence GE 3.4.2/411 <D5> (thread=Cluster, member=n/a): Service Cluster joined the cluster with senior service member n/a
2009-04-17 05:34:21.890/286.297 Oracle Coherence GE 3.4.2/411 <Info> (thread=Cluster, member=n/a): Created a new cluster "cluster:0x2FFB" with Member(Id=1, Timestamp=2009-04-17 05:34:09.203, Address=141.144.90.113:8088, MachineId=18289, Location=site:sg.oracle.com,machine:rajerama-sg,process:3816, Role=WeblogicServer, Edition=Grid Edition, Mode=Development, CpuCount=2, SocketCount=1) UID=0x8D905A7100000120B0D9DD3347711F98
2009-04-17 05:34:27.000/291.407 Oracle Coherence GE 3.4.2/411 <D5> (thread=DistributedCache, member=1): Service DistributedCache joined the cluster with senior service member 1
[EL Finer]: 2009.04.17 05:34:28.343--ServerSession(32927169)--Thread(Thread[[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)',5,Pooled Threads])--Coherence(MetadataType)::Get: 2
[EL Fine]: 2009.04.17 05:34:28.703--ServerSession(32927169)--Thread(Thread[[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)',5,Pooled Threads])--Coherence(MetadataType)::Get: 2 result: null
[EL Finer]: 2009.04.17 05:34:28.703--ServerSession(32927169)--Thread(Thread[[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)',5,Pooled Threads])--Coherence(MetadataType)::Get: 2
*[EL Fine]: 2009.04.17 05:34:28.703--ServerSession(32927169)--Thread(Thread[[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)',5,Pooled Threads])--Coherence(MetadataType)::Get: 2 result: null*
null
Eventhough the method is called correctly, it does not return the value. Is there any other setup that has to be done?
Regards
Raji

Hi Raji,
You mentioned:
>
-Dtangosol.coherence.cacheconfig=D:/JDEV_11g/jdeveloper/jdev/mywork/CoherenceApp/CoherenceProject/src/META-INF/coherence-cache-config.xml
>
and
>
Persistence.xml and coherence-cache-config.xml are palced inside the jar file.
>
It appears that these are conflicting; as the system property indicates that the config should be read from a file, whereas the file is actually deployed in a jar.
That being said, I would suggest double checking that the system property is actually being set in the JVM. In my testing, if I specify a cache config that does not exist, an exception will be thrown:
java -Dtangosol.coherence.cacheconfig=foo.xml com.tangosol.net.CacheFactory
Oracle Coherence Version 3.4.2/411p3
Grid Edition: Development mode
Copyright (c) 2000-2009 Oracle. All rights reserved.
Map (?): cache test
2009-04-22 15:33:15.310/6.917 Oracle Coherence GE 3.4.2/411p3 <Error> (thread=main, member=1):
(Wrapped: Failed to load the factory) java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
        at com.tangosol.util.ClassHelper.newInstance(ClassHelper.java:662)
        at com.tangosol.net.CacheFactory.getConfigurableCacheFactory(CacheFactory.java:602)
        at com.tangosol.coherence.component.application.console.Coherence.doCache(Coherence.CDB:9)
        at com.tangosol.coherence.component.application.console.Coherence.processCommand(Coherence.CDB:209)
        at com.tangosol.coherence.component.application.console.Coherence.run(Coherence.CDB:39)
        at com.tangosol.coherence.component.application.console.Coherence.main(Coherence.CDB:3)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at com.tangosol.net.CacheFactory.main(CacheFactory.java:1308)
Caused by: (Wrapped: Failed to load configuration resource: foo.xml) java.io.IOException: Configuration is missing: "foo.xml", loader=null
        at com.tangosol.net.DefaultConfigurableCacheFactory.loadConfigAsResource(DefaultConfigurableCacheFactory.java:386)
        at com.tangosol.net.DefaultConfigurableCacheFactory.loadConfig(DefaultConfigurableCacheFactory.java:337)
        at com.tangosol.net.DefaultConfigurableCacheFactory.loadConfig(DefaultConfigurableCacheFactory.java:309)
        at com.tangosol.net.DefaultConfigurableCacheFactory.<init>(DefaultConfigurableCacheFactory.java:137)
        ... 15 moreThanks,
Patrick

TopLink JPA coherence

we are using Toplink, JPA and coherence.
can anyone point me to java code that depicts "How to warm up the coherence cache and then run queries against the cache. and then what happens if the at some point object is not in cache " ?
thx
D

Warming the cache for a TopLink Grid enabled entity can be done by issuing a query for the objects you want to load into the cache along with the hint:
query.setHint(QueryHints.QUERY_REDIRECTOR, new IgnoreDefaultRedirector());
Which is discussed here: http://download.oracle.com/docs/cd/E14571_01/doc.1111/e16596/tlcgd003.htm#CHDGFCAI.
You can also use JOIN and BATCH hints on the query if you want to load a graph of objects into the grid.
With Grid Read and Grid Entity configurations all queries will be executed on the grid. Primary key queries on the grid for objects not present in the grid will result in a primary key select on the database if you've configured a CacheStore for a given entity's cache.
Non-PK queries will only return what is in the grid. With Grid Read and Grid Entity is it your responsibility to ensure the grid is warmed up.
--Shaun

Toplink JPA 2.0 migration in JDeveloper 11.1.1.2.0

I would like to used Toplink JPA 2.0 in JDeveloper 11g, how to update toplink_111120_en.zip in JDeveloper IDE.? Even I added eclipselink and JPA 2.0 spec lib into classpath, I am still getting compile time error on orphanRemoval attribute in OneToMany annotation.

Hi,
I am not clear on the requirement.Let me know if my understanding is correct.
You have a created a JPA project in Toplink Workbench and want to reuse the work in JDeveloper.
If the above is correct,open the JDeveloper(PS3 release) and use the File-import-TopLinkworkbenchProject and select the application workspce created in TWB.
Regards,
Vinay

Automatic connection "ping" / health check in TopLink JPA ?

Some days ago we experienced problems with our underlying Oracle database, so the DB server hat to be shut down and rebootet. The application server machine (running Apache Tomcat 5.5 on a Linux OS) which provides several web-applications that are using Toplink JPA were not restarted after the DB was up again.
We encountered several subsequent "connection reset" errors within the webapps which where produced by TopLink JPA. I'd assume that this comes from the underlying restart of the DB, which invalidated/closed TopLink's JPA connection.
is there any option e.g. to be set in persistence.xml to enable a Connection-"ping" or "health check" before TopLink JPA is using the connection?
e.g.
toplink.jpa.connection.ping = "select 1 from dual";
regards,
Hans

Hans,
There is nothing built in but you can use an ExceptionHandler to handle failures and re-connect connection. This is typically only an issue when using TopLink's internal connection pooling. It is more common in a container to use its data sources and rely on them to handle connection management.
Doug

TopLink JPA - trailing spaces on Char column

Gurus,
In JDBC you use the following to ignore trailing spaces when querying on Char column:
OracleConnection conn = (OracleConnection) c;
conn.setDefaultFixedString(true);
How to achieve this using TopLink JPA?
Thanks much,
Nicky

Nicky,
I believe you would need to do this in API. Ideally setting these configurations on the properties of the JDBC connection pool is easier but if you wish to do it with TopLink Essentials I would use a session event listener's postAcquireConnection to customize it.
In the persistence.xml you will need to configure your persistence unit to use a session customer like:
        <property name="toplink.session.customizer" value = "mypackage.JDBCConnectionConfig"/>Then you will need to implement this customizer and include it on the classpath of your application:
public class JDBCConnectionConfig implements SessionCustomizer {
    public void customize(Session session) {
        session.getEventManager().addListener(new JDBCConfigEventListener());
    class JDBCConfigEventListener extends SessionEventAdapter {
        public void postAcquireConnection(SessionEvent event) {
            Connection conn = ((DatabaseAccessor) event.getResult()).getConnection();
            OracleConnection oconn = (OracleConnection) conn;
            oconn.setDefaultFixedString(true);
Note: I did not see setDefaultFixedString in the most recent version of the Oracle JDBC driver
I would definitely look into configuring your data source's connection pool with this property enabled before adding this event listener.
Doug

Where can get the adftutoial or adfdevguide for TopLink JPA with JSF/ADF ?

Hello...
Can anyone suggest me where on OTN I can find the adftutorial and adfdevguide describing developement using Toplink JPA ( EJB 3.0) with JSF/ADF faces ?
Thanking you in advance,
Samba

Hi Samba,
- Build a Web Application(JSF) using JPA
- Oracle ADF Developer Guide
- ADF Learning Center
Hope it helps!
Koen

Need help with Java SE TopLink JPA project

I'd like to ultimately run an Oracle stored procedure (connecting to Oracle 10g DB) in my Java SE program. I want to use TopLink JPA (11g) and if possible, use sessions to manage things - i.e. I want to run a stored procedure (that doesn't return anything), then run a native query. Does anyone have a good example of this type of configuration?
I've been able to get it working with plain ol' JPA via TopLink - i.e. my persistence.xml is fine. Obviously, JPA doesn't define stored procedures, so I need to set it up to use stored procedures. I tried setting up my sessions.xml file - I think it's OK. However, I think my project.xml file is incorrect - and I don't think I even really understand it. But I want a project.xml that is very simple - does anyone have a simple, bare-bones project.xml example. All I plan to do is run the occasional stored procedure and run native queries (for now).

If all you want to do is create extra stored procedure queries then you might want to consider just creating a customizer and adding some queries there. Then you won't actually need to create a project at all.
Use the toplink.session.customizer property described at:
http://www.oracle.com/technology/products/ias/toplink/JPA/essentials/toplink-jpa-extensions.html
and then add some queries to your session. To make it even easier, then just define your queries in JPA, and override the call in your customizer. For example, if you defined a JPA named query called "Employee.executeStoredProc" then in your customizer method you could have something like:
public void customize(Session session) {
DatabaseQuery query = session.getQuery(“Employee.executeStoredProc”);
StoredProcedureCall call = new StoredProcedureCall();
call.setProcedureName("employee_stored_proc");
query.setCall(call);
Then when you call your JPA query the stored proc will run.

Why it is so slow using toplink JPA in applet or webstart

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