JDO (vs.) JDBC

Hi guys,
a simple question: are there big performance differences by using JDO instead of JDBC?
I know most people don't want answer this kinde of questions :)
but before i start with implementing some solutions i will try to choose this technology that is better to me (performance and manageablity).
I'am not familiar with JDBC as much as to JDO.
So if you want advise to me, to make the performance-tests by my self, so I gonna to know:
- Is JDO applicable to an Oracle 8.1.7 database?
- what kinde of tests I have to achieve, to be able to make some decisions?
- where to finde a JDO-Tutorial?

I just spotted this and wanted to give an answer in case you never found the answers elsewhere.
a simple question: are there big performance
differences by using JDO instead of JDBC?
I know most people don't want answer this kinde of
questions :)This is a difficult question to answer because it is an apples to oranges question. With JDO, performance is really a factor of the quality of the implementation. With JDBC, performance is factor of the quality of the JDBC coder and the amount of time spent coding the JDBC.
That said, our implementation of the JDO standard, Kodo JDO, in about 90% of the cases matches the performance of an existing JDBC solution or beats it. In the remaining 10%, Kodo is approximately 0-15% less performant.
but before i start with implementing some solutions i
will try to choose this technology that is better to
me (performance and manageablity).
I'am not familiar with JDBC as much as to JDO.
So if you want advise to me, to make the
performance-tests by my self, so I gonna to know:
- Is JDO applicable to an Oracle 8.1.7 database?Depends on the implementation, but I believe almost all of the implementations support Oracle.
- what kinde of tests I have to achieve, to be able to
make some decisions?The best suggestion that I can provide is try it out. Most of customers tell us that Kodo JDO pays for itself in 1-3 months.
- where to finde a JDO-Tutorial?There are now 4 JDO books available where you can find great materials. All of the JDO vendors also offer a variety of tutorials.
Hope that helps and I wish I had seen this posting earlier.
Neelan Choksi
www.solarmetric.com

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    kodo.WriteLockLevel: write
    Exception in thread "main" java.lang.ClassCastException: kodo.jdo.PersistenceManagerFactoryImpl
         at kodo.runtime.KodoHelper.getPersistenceManagerFactory(KodoHelper.java:66)
         at net.uk.roos.util.SeedDatabase.go(Unknown Source)
         at net.uk.roos.util.SeedDatabase.main(Unknown Source)
         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.intellij.rt.execution.application.AppMain.main(AppMain.java:90)
    Process finished with exit code 1
    Thanks and regards, Robin.
    Robin Roos (robin at roos dot uk dot net)

    I solved my problem by defining a Properties object with the required configuration information and using JDOHelper.getPersistenceManagerFactory(Properties) instead of (File).
    Kind regards, Robin.

  • Contains Queries on Empty Collections

    I'm running into the following problem when attempting a JDO query which
    uses the .contains() operator on multiple collections, where one of the
    collections is empty.
    My class contains two vectors, both of which contain strings. I want to run
    a query that returns all instances of TestClass that contain a certain
    string in one of the two lists. I have done roughly what is outlined below.
    1) The class looks like:
    public class TestClass
    private Vector _collection1;
    private Vector _collection2;
    2) The metadata in system.jdo looks like:
    <class name="TestClass">
    <field name="_collection1">
    <collection element-type="java.lang.String"/>
    </field>
    <field name="_collection2">
    <collection element-type="java.lang.String"/>
    </field>
    </class>
    3) I construct the query as follows:
    // pm is the existing persistence manager
    Query query = pm.newQuery();
    query.setClass( TestClass.class );
    query.setCandidates( pm.getExtent( TestClass.class, true ) );
    query.setFilter( "_collection1.contains( string ) ||
    _collection2.contains( string )" );
    query.declareParameters( "String string" );
    Collection results = (Collection) query.executeWithArray( new Object[]
    { "searchString" } );
    4) The resulting SQL query (for SQL/Server) looks like:
    SELECT DISTINCT
    t0.JDOIDX,
    t0.JDOCLASSX,
    t0.JDOLOCKX
    FROM
    TESTCLASS__COLLECTION2X t2,
    TESTCLASSX t0,
    TESTCLASS__COLLECTION1X t1
    WHERE
    t1.COLLECTION1X = 'searchString'
    OR (t2.COLLECTION2X = 'searchString')
    AND t0.JDOIDX = t1.JDOIDX
    AND t0.JDOIDX = t2.JDOIDX
    Suppose that the target string is located in the first collection of some
    instance of TestClass. Also suppose that there are no strings in the second
    collection. Under these circumstances, the query will not return this
    instance.
    Is there a way to work around this other than running two separate queries?
    Is this a bug or is this the expected behaviour?
    Any help on this is much appreciated.
    Regards,
    Sasha Haghani.

    Hi David,
    I've tried this approach as well and am now getting a different error.
    Using:
    1) query filter: "( _collection1.contains( var ) && var == param ) || (
    _collection2.contains( var ) && var == param )"
    2) parameter string: "String param"
    3) variable string: "String var"
    4) parameters: new Object[] { "value" }
    The following exception raised is:
    com.techtrader.modules.jdo.impl.jdbc.sql.SQLExceptionWrapper: [SQL=SELECT
    t0.JDOIDX, t0.JDOCLASSX, t0.JDOLOCKX FROM TESTCLASSX t0 WHERE variable =
    'value' OR (*variable* = 'value')] Line 1: Incorrect syntax near '*'.
    Severity 15, State 1 <rest of exception message omitted>
    at
    com.techtrader.modules.jdo.impl.jdbc.runtime.JDBCFieldData.load(JDBCFieldDat
    a.java:127)
    at
    com.techtrader.modules.jdo.impl.jdbc.runtime.JDBCQuery.executeQuery(JDBCQuer
    y.java:33)
    at
    com.techtrader.modules.jdo.query.QueryImpl.executeWithMap(QueryImpl.java:330
    at
    com.techtrader.modules.jdo.query.QueryImpl.executeWithArray(QueryImpl.java:3
    93)
    As you can see from above, the generated SQL statement looks like:
    SELECT
    t0.JDOIDX,
    t0.JDOCLASSX,
    t0.JDOLOCKX
    FROM
    TESTCLASSX t0
    WHERE
    variable = 'value'
    OR (*variable* = 'value')
    Additionally, if I change the filter to "( (_collection1.contains( var )) &&
    (var == param) )", I get the following exception:
    com.techtrader.modules.jdo.impl.jdbc.sql.SQLExceptionWrapper: [SQL=SELECT
    t0.JDOIDX, t0.JDOCLASSX, t0.JDOLOCKX FROM TESTCLASSX t0 WHERE variable =
    'value'] Line 1: Incorrect syntax near '*'. Severity 15, State 1, <rest of
    exception message omitted>
    at
    com.techtrader.modules.jdo.impl.jdbc.runtime.JDBCFieldData.load(JDBCFieldDat
    a.java:127)
    at
    com.techtrader.modules.jdo.impl.jdbc.runtime.JDBCQuery.executeQuery(JDBCQuer
    y.java:33)
    at
    com.techtrader.modules.jdo.query.QueryImpl.executeWithMap(QueryImpl.java:330
    at
    com.techtrader.modules.jdo.query.QueryImpl.executeWithArray(QueryImpl.java:3
    93)
    Again, the generated SQL looks like:
    SELECT
    t0.JDOIDX,
    t0.JDOCLASSX,
    t0.JDOLOCKX
    FROM
    TESTCLASSX t0
    WHERE
    variable = 'value'
    We are using multiple queries for now and aggregating the results by hand,
    so this issue isn't blocking us.
    Regards,
    Sasha Haghani.
    "David Ezzio" <[email protected]> wrote in message
    news:[email protected]...
    Hi Sasha,
    One thing that appears "unusual", if you will, about your queries
    is that you are using a parameter in the contains() method rather
    than a variable. The spec mentions a different usage pattern along
    the following lines: "collection.contains(string) && string ==
    strParam" where "strParam" is declared as the parameter, and
    "string" is declared as a variable. You may have already tried this
    as a variation. Your usage appears permitted as far as the spec
    goes, but may not have been tested for Kodo.
    David Ezzio
    Sasha Haghani wrote:
    Hi Patrick,
    I tried your workaround and the following exception was thrown:
    javax.jdo.JDOUserException: The given filter/ordering String "( (
    (_collection1.isEmpty() == false) && (_collection1.contains( string )) )
    ||
    ( (_collection2.isEmpty() == false) && (_collection2.contains(
    string )) ) )" is not valid. Make sure all parentheses are properlymatched
    and that the filter uses proper Java syntax.
    at
    com.techtrader.modules.jdo.query.QueryImpl.getExpression(QueryImpl.java:371)
    at
    com.techtrader.modules.jdo.impl.jdbc.runtime.JDBCQuery.getExpression(JDBCQue
    ry.java:49)
    at
    com.techtrader.modules.jdo.query.QueryImpl.executeWithMap(QueryImpl.java:312
    at
    com.techtrader.modules.jdo.query.QueryImpl.executeWithArray(QueryImpl.java:3
    93)
    I tried three variations on the parentheses used in the filterexpression.
    All yielded the same exception. I couldn't find any glaring errors or
    omissions in the query. The string parameter is also properly declared.Is
    this possibly another bug?
    I'm executing multiple individual queries to acheive my goal for thetime
    being. Let me know if I'm doing anything wrong or if these are bugs,let me
    know when they are fixed. Thanks much.
    Regards,
    Sasha Haghani.
    "Patrick Linskey" <[email protected]> wrote in message
    news:[email protected]...
    Sasha,
    This sounds like a bug. I will enter it into our database and get back
    to you later.
    Meanwhile, you may be able to work around it using something like
    query.setFilter (
    "(_collection1.isEmpty () == false && _collection1.contains(string))"
    + " || (_collection2.isEmpty () == false &&
    _collection2.contains
    (string))" );
    -Patrick Linskey

  • Kodo says classes are not enhanced, but they are!

    Hello,
    I have run into a problem with Kodo and a web-app that I just can't solve.
    I try to access JDO-objects from within a web-application (that uses
    Struts). When I do this, I get an exception from Kodo saying the classes are
    not enhanced. But I am sure they are enhanced. The exception is:
    javax.jdo.JDOFatalUserException: The system could not initialize; the
    following registered persistent types have not been enhanced: [class
    de.mediateam.quizmaster.data.User, class
    de.mediateam.quizmaster.data.Category, class
    de.mediateam.quizmaster.data.Topic, class
    de.mediateam.quizmaster.data.Test].
    at
    com.techtrader.modules.jdo.impl.jdbc.JDBCPersistenceManagerFactory.setup(JDB
    CPersistenceManagerFactory.java:190)
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.privateSetu
    p(PersistenceManagerFactoryImpl.java:496)
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.getPersiste
    nceManager(PersistenceManagerFactoryImpl.java:61)
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.getPersiste
    nceManager(PersistenceManagerFactoryImpl.java:50)
    at
    de.mediateam.quizmaster.persist.jdo.JDOFactory.getPersistenceManager(JDOFact
    ory.java)
    <snip>
    There are two facts about this I don't understand:
    1. It was working before, but then something changed (or I changed something
    but I really don't remember it) and now it won't work anymore. I tried to go
    back to an earlier version of my project but got the same problem.
    2. It is really strange, that when I access the database from outside the
    web-app (I have a small seed programm to insert some data), it works fine.
    No problems.
    I am sure that it is the enhanced classes loaded from within the web-app
    because when I simply delete them Kodo won't find the classes at all. All
    Kodo-jars are in the web-context/WEB-INF/lib directory.
    Could anybody tell me the possible reasons that can cause this exception? Is
    it just a test for "implements PersistenceCapable" that is done in the
    setup-method, or maybe a bit more? I really can't think of anything else I
    could do.
    Thanks
    Martin

    Hello,
    I have run into a problem with Kodo and a web-app that I just can't solve.
    I try to access JDO-objects from within a web-application (that uses
    Struts). When I do this, I get an exception from Kodo saying the classes are
    not enhanced. But I am sure they are enhanced. The exception is:
    javax.jdo.JDOFatalUserException: The system could not initialize; the
    following registered persistent types have not been enhanced: [class
    de.mediateam.quizmaster.data.User, class
    de.mediateam.quizmaster.data.Category, class
    de.mediateam.quizmaster.data.Topic, class
    de.mediateam.quizmaster.data.Test].
    at
    com.techtrader.modules.jdo.impl.jdbc.JDBCPersistenceManagerFactory.setup(JDB
    CPersistenceManagerFactory.java:190)
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.privateSetu
    p(PersistenceManagerFactoryImpl.java:496)
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.getPersiste
    nceManager(PersistenceManagerFactoryImpl.java:61)
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.getPersiste
    nceManager(PersistenceManagerFactoryImpl.java:50)
    at
    de.mediateam.quizmaster.persist.jdo.JDOFactory.getPersistenceManager(JDOFact
    ory.java)
    <snip>
    There are two facts about this I don't understand:
    1. It was working before, but then something changed (or I changed something
    but I really don't remember it) and now it won't work anymore. I tried to go
    back to an earlier version of my project but got the same problem.
    2. It is really strange, that when I access the database from outside the
    web-app (I have a small seed programm to insert some data), it works fine.
    No problems.
    I am sure that it is the enhanced classes loaded from within the web-app
    because when I simply delete them Kodo won't find the classes at all. All
    Kodo-jars are in the web-context/WEB-INF/lib directory.
    Could anybody tell me the possible reasons that can cause this exception? Is
    it just a test for "implements PersistenceCapable" that is done in the
    setup-method, or maybe a bit more? I really can't think of anything else I
    could do.
    Thanks
    Martin

  • SAP JMS Question

    I think I know the answer to this, but I have to check.
    Are there more than one kind of <b>Express</b> messages in SAP?
    Are there more than one kind of <b>Persistent</b> message type in SAP?
    Or are the message types pretty much JMS specifications only ?
    Thanks, John

    Hi,
      The messages which are used in JMS are the specifications of JMS only and not that of SAP.Two ways of sending messages in JMS as u know is "topic" & "subscribe".SAP WAS server which supports J2EE specifications supports JMS there by the msgs are pretty much JMS specifications only.
      If you want to store ur java objects as persistent in DB (not related to this q) then SAP WAS supports JDO,SQLJ,JDBC etc.
       Hope it helps.
    Rdgs,
    Guru

  • 2 Phase Commit Global Transaction resolution question.

    Hi All,
    I hope this is the right place to ask this question.
    I'm trying to figure out what generally happens after the JTA AbandonTimeout occurs.
    Here is the scenario.
    1. Transaction Manager sends Commit to Resource Managers 1 and 2.
    2. Resource Manager 1 receives and processes commit.  Resource Manager 2 doesn't receive commit.
    3. Resource Manager 1 returns acknowledgement.
    4. Transaction Manager times out and starts recovery process.
    5. Resource Manager 2 session times out and is set to in-doubt.
    6. Transaction Manager can never reconnect to Resource Manager 2, and the AbandonTimeout is reached.
    7. Transaction Manager abandons RM2 transaction.
    8. Does Transaction manager return an error for global transaction?
    I'm guessing the application the Transaction Manager is working for has its own timeouts which would most likely be a smaller value than the abandon timeout.  So the transaction would most likely timeout.  I'm just trying to make sure that the Global Transaction is not sent back as complete at a later time if the abandon timeout is reached.
    Any Thoughts?
    Thanks,
    Matt

    Petr-
    In article <avflf9$ccu$[email protected]>, Petr Bulanek wrote:
    Hi Marc,
    Well, what does it really mean that \'Kodo will not respect the
    semantics of the 2-phase-commit protocol\'?Are you saying that Kodo may commit my changes even if the other datastore
    decides to roll the transaction back at the last moment?
    That if Kodo has difficulties to commit, it would not roolback the global
    transaction and as a result the other datastores will commit?You are correct: we currently do not do anything special for 2 phase
    commit at all.
    I mean, this is quite important and would like to know exactly what to
    expect so I can work around it.
    Thank you,
    Petr
    P.S.
    I \'think\' I saw the plan to fix this in 2.5.x. What is the planned
    release date?It is in the milestone for 2.5. We can't make any committments on its
    release date, but it will hopefully be out within 2 months.
    Marc Prud\'hommeaux wrote:
    Petr-
    You can integrate Kodo\'s JDO transactions into the Application Server\'s
    global transaction (which might also commit multiple other
    transactions). The only issue is that Kodo will not respect the
    semantics of the 2-phase-commit protocol.
    We expect to have this issue resolved soon.
    In article <avdri3$f2o$[email protected]>, Petr Bulanek wrote:
    I have noticed that there is open bug (211) that refers to 2 phase commit
    and I just curious what the exact problem is.
    Does that imply that the current version (2.4) does not allow 2 phase
    commit?
    Let\'s say I need to integrate JDO into global transaction (managed by App
    server) and I may need during that transaction update multiple databases.
    It could be implemented via JDO (multiple PMFs) or it could be a
    combination of JDO and JDBC/EJB happening during the same transaction.
    Am I likely to hit a problem if I do that?
    Thank you,
    Petr
    Marc Prud\'hommeaux [email protected]
    SolarMetric Inc. http://www.solarmetric.com
    Marc Prud'hommeaux [email protected]
    SolarMetric Inc. http://www.solarmetric.com

  • NullPointerException in JDBCExpressionFactory

    Hi-
    I'm setting up Kodo for the first time with my own classes using
    a PostgreSQL database. I worked through the tutorial without
    encountering any problems, but I'm stuck on this error when I try to
    run a method in "StateTest" which runs a query on a persistent object
    "State", which in turn runs off a pre-existing database. I've run
    jdoc on them both, and I simplified State so it's:
    public class State {
    private int id;
    private String abbrev;
    ... usual get and set methods
    public class StateTest {
    public void testSelect() throws ClassNotFoundException {
    PersistenceManager pm = JDOFactory.getPersistenceManager ();
    Class cls=Class.forName("com.bridgecanada.dao.State");
    Extent extent = pm.getExtent (cls, false);
    assert (extent!=null);
    assert (pm!=null);
    assert (cls!=null);
    // String filter="id==6";
    // Query query = pm.newQuery (cls, extent, filter);
    Query query = pm.newQuery (cls, extent);
    Collection states = (Collection) query.execute ();
    This gives me an Null pointer exception at the query.execute() line:
    java.lang.NullPointerException
         at com.techtrader.modules.jdo.impl.jdbc.runtime.JDBCExpressionFactory.<init>(JDBCExpressionFactory.java:37)
         at com.techtrader.modules.jdo.impl.jdbc.runtime.JDBCQuery.getExpressionFactory(JDBCQuery.java:40)
         at com.techtrader.modules.jdo.query.QueryImpl.getExpression(QueryImpl.java:367)
         at com.techtrader.modules.jdo.impl.jdbc.runtime.JDBCQuery.getExpression(JDBCQuery.java:49)
         at com.techtrader.modules.jdo.query.QueryImpl.executeWithMap(QueryImpl.java:312)
         at com.techtrader.modules.jdo.query.QueryImpl.execute(QueryImpl.java:279)
         at com.bridgecanada.dao.StateTest.testSelect(StateTest.java:37)
    Any idea what this might be?
    Thanks for any help!
    -Mike
    Mike Bridge
    <[email protected]>

    Hello Mike --
    I just wanted to point out that Kodo was adding extra fields to the
    table because you did not declare the 'id' and other fields to be
    non-persistent in your metadata. Any non-static, non-final field is
    assumed by JDO to be persistent unless you mark it otherwise in the
    metadata with the 'persistence-modifier="none"` attribute setting.
    -- Abe White
    Kodo Product Team
    Mike Bridge wrote:
    Hi Patrick,
    Here's the setup of the simple table I'm using (on postgresql 7.1)
    CREATE TABLE state (
    id INT,
    abbrev CHAR(5)
    CREATE UNIQUE INDEX pk_state ON state(id);
    INSERT INTO state(id, abbrev) VALUES (1, 'ab');
    INSERT INTO state(id, abbrev) VALUES (2, 'bc');
    INSERT INTO state(id, abbrev) VALUES (3, 'sk');
    INSERT INTO state(id, abbrev) VALUES (4, 'mb');
    INSERT INTO state(id, abbrev) VALUES (5, 'on');
    INSERT INTO state(id, abbrev) VALUES (6, 'qc');
    The state class is:
    package com.bridgecanada.dao;
    public class State /*extends MultilingualImpl*/ {
    private int id;
    private String abbrev;
    public State(int id, String abbrev) {
    this.id=id;
    this.abbrev=abbrev;
    public int getId() {
    return id;
    public void setId(int id) {
    this.id=id;
    public String getAbbrev() {
    return this.abbrev;
    public void setAbbrev(String abbrev) {
    this.abbrev=abbrev;
    The calling method is (using the JDOFactory class from the example):
    public void testSelect() throws ClassNotFoundException {
    PersistenceManager pm = JDOFactory.getPersistenceManager ();
    Class cls=Class.forName("com.bridgecanada.dao.State");
    Extent extent = pm.getExtent (cls, false);
    assert (extent!=null);
    assert (pm!=null);
    assert (cls!=null);
    // String filter="id==6";
    Query query = pm.newQuery (cls, extent, "id==6");
    //Query query = pm.newQuery (cls, extent);
    Collection states = (Collection) query.execute ();
    Iterator iter=states.iterator();
    while (iter.hasNext()) {
    System.out.println("found "+iter.next());
    My package.jdo file is:
         <package name="com.bridgecanada.dao">
              <class name="State">
    <extension vendor-name="tt" key="table" value="state"/>
    <extension vendor-name="tt" key="pk-column" value="id"/>
    <extension vendor-name="tt" key="lock-column" value="none"/>
    <extension vendor-name="tt" key="class-column" value="none"/>
    <field name="abbrev">
    <extension vendor-name="tt" key="data-column" value="abbrev"/>
    </field>
    </class>
         </package>
    And the persistent-types definition of my system.prefs is:
    <persistent-types>
    <array>
    <value>com.bridgecanada.dao.State</value>
    </array>
    </persistent-types>
    Thanks!
    -Mike
    On Wed, Aug 15, 2001 at 07:46:21PM +0200, Patrick Linskey wrote:
    Mike,
    Actually, that looks like a bug. What do the other class entries in your
    package.jdo look like, and what is the query that you are performing? Are
    there relations to any other persistence-capable classes in your test?
    Based on that SQL, it looks as though Kodo is trying to perform a join, and
    erroneously using t0.IDX as the primary key column rather than your id
    column.
    Thanks,
    Patrick
    Patrick Linskey
    [email protected]
    ----- Original Message -----
    From: "Mike Bridge" <[email protected]>
    To: "David Ezzio" <[email protected]>
    Cc: "Tech Trader JDO List" <[email protected]>
    Sent: Thursday, August 16, 2001 12:41 AM
    Subject: Re: NullPointerException in JDBCExpressionFactory
    Hi David,
    I realized that this was happening because I didn't have the
    <persistent-types> tag in the system.prefs file.
    However, I now have another problem... I am trying to make
    this work with my legacy database rather than have kodo create
    me a new one. My package.jdo file looks like this:
    <package name="com.bridgecanada.dao">
    <class name="State">
    <extension vendor-name="tt" key="table" value="state"/>
    <extension vendor-name="tt" key="pk-column" value="id"/>
    <extension vendor-name="tt" key="lock-column" value="none"/>
    <extension vendor-name="tt" key="class-column" value="none"/>
    <field name="abbrev">
    <extension vendor-name="tt" key="data-column" value="abbrev"/>
    </field>
    </class>
    </package>
    However, those same queries I tried before produce:
    javax.jdo.JDODataStoreException: [SQL=SELECT t0.id, t0.abbrev, t0.IDX,
    t0.STATE_ENX, t0.STATE_ESX, t0.STATE_FRX FROM state t0 ERROR: No suchattribute or function 'idx'
    It looks like Kodo is still expecting some Kodo-managed fields. Do I need
    to add some other tags to my package.jdo file?
    Thanks!
    -Mike
    On Wed, Aug 15, 2001 at 08:45:45AM -0400, David Ezzio wrote:
    Mike,
    Have you tried setting the filter to the empty string?
    David
    Mike Bridge
    <[email protected]>

  • OutOfMemoryError with many deployed apps

    We have 62 applications (EARs) deployed. 21 of these application contains a single stateless session bean and somewhere between 3 and 40 entity beans each. In total we currently have 466 entity beans. The rest of the applications contain only a single stateful session bean each.
    When all these applications are enabled we can run for a few minutes before getting an OutOfMemoryError. When we disable 20 of the latter kind, the ones with stateful session beans, the server seems to work OK.
    We have not yet, for obvious reasons, rolled the system out to the users so only a few developers are using it. The clients are fat Swing clients that talk IIOP with the server.
    In one of the beans we have a method that does three consecutive System.gc() and then measures the heap usage. With all applications enabled only around 30% of the maximum heap space is used, even right before the server crashes. The heap max is set to 512MB and since the usage rate is so low it doesn't seem meaningful to increase it. Also, if there is a leak then just increasing the heap may give us a longer uptime without really solving the problem. We suspect that there is some other limit somewhere, but since the error message in the log doesn't have a stack trace it is very difficult to narrow it down.
    Has anyone had a similar problem and maybe found a solution?
    TIA,
    /Gunnar

    I've now tried switching off UseTLab, which had no effect. I've tried UseParallelGC earlier, also with no effect. When the server goes down there are only around 80 threads running, and I dont think that qualifies as a "large number of threads".
    Some other info:
    Hardware: Dell PowerEdge 2650, 4 x 2388 MHz CPU's, 4 GB RAM and a 6 GB paging file.
    OS: Windows 2000 Server v 5.0.2195 SP4
    JVM: Java HotSpot(TM) Server VM, Version 1.4.2_04
    Instead of listing the JVM options, here is the complete server.xml:
    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE server PUBLIC "-//Sun Microsystems Inc.//DTD Sun ONE Application Server 7.0//EN" "file:///C:/Sun/AppServer7/lib/dtds/sun-server_1_1.dtd">
    <!--
    Copyright (c) 2002 Sun Microsystems, Inc. All rights reserved.
    Use is subject to license terms.
    -->
    <!-- server_7_0_dtd version: 1.1.2.39 -->
    <server locale="en_US" name="server1" log-root="C:/Sun/AppServer7/domains/domain1/server1/logs" application-root="C:/Sun/AppServer7/domains/domain1/server1/applications" session-store="C:/Sun/AppServer7/domains/domain1/server1/session-store">
    <http-service qos-enabled="false" qos-metrics-interval-in-seconds="30" qos-recompute-time-interval-in-millis="100">
    <http-listener id="http-listener-1" address="0.0.0.0" port="81" acceptor-threads="1" blocking-enabled="false" security-enabled="false" default-virtual-server="server1" server-name="toker" enabled="true"/>
    <mime id="mime1" file="mime.types"/>
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    <jvm-options>-Dcom.sun.aas.configRoot=C:/Sun/AppServer7\config</jvm-options>
    <jvm-options>-Dcom.sun.aas.imqLib=C:\Sun\AppServer7\imq\lib</jvm-options>
    <jvm-options>-Dcom.sun.aas.imqBin=C:\Sun\AppServer7\imq\bin</jvm-options>
    <jvm-options>-Dcom.sun.aas.webServicesLib=C:\Sun\AppServer7\share\lib</jvm-options>
    <jvm-options>-Dorg.xml.sax.parser=org.xml.sax.helpers.XMLReaderAdapter</jvm-options>
    <jvm-options>-Dorg.xml.sax.driver=org.apache.crimson.parser.XMLReaderImpl</jvm-options>
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    <jvm-options>-Dbug.dependant.delete=true</jvm-options>
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    <jvm-options>-Dplis.docroot=D:/Project</jvm-options>
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    <jvm-options>-Xms1024m -Xmx1024m</jvm-options>
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    <jdbc-resource enabled="true" pool-name="PlisPool" jndi-name="jdo/PlisDBPM"/>
    <persistence-manager-factory-resource factory-class="com.sun.jdo.spi.persistence.support.sqlstore.impl.PersistenceManagerFactoryImpl" enabled="true" jndi-name="jdo/PlisDB" jdbc-resource-jndi-name="jdo/PlisDBPM"/>
    <jdbc-connection-pool steady-pool-size="1" max-pool-size="32" max-wait-time-in-millis="60000" pool-resize-quantity="2" idle-timeout-in-seconds="300" is-isolation-level-guaranteed="true" is-connection-validation-required="true" connection-validation-method="table" fail-all-connections="false" datasource-classname="com.informix.jdbcx.IfxDataSource" name="PlisPool" transaction-isolation-level="read-committed" validation-table-name="singleton">
    <description>luna/plisutv/plis_db</description>
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    <property value="plis" name="password"/>
    <property value="true" name="ifxDELIMIDENT"/>
    <property value="1531" name="portNumber"/>
    <property value="plis_db" name="databaseName"/>
    <property value="plisutv" name="serverName"/>
    <property value="luna" name="ifxIFXHOST"/>
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    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\CodeBook_2" name="CodeBook" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\UtbForband_1" name="UtbForband" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\PlisServer_2" name="PlisServer" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\CivKpl_2" name="CivKpl" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\Batch_2" name="Batch" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\Faq_1" name="Faq" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\Infra_4" name="Infra" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\InfraOvrigt_1" name="InfraOvrigt" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\IntPerson_3" name="IntPerson" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\KoderBtkd_1" name="KoderBtkd" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\KoderOrg_1" name="KoderOrg" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\KoderOvrigt_1" name="KoderOvrigt" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\Monstring_1" name="Monstring" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\Person_4" name="Person" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\PArende_1" name="PArende" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\PArendeStod_1" name="PArendeStod" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\Prov_1" name="Prov" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\ProvStod_1" name="ProvStod" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\RegSlagning_1" name="RegSlagning" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\Reseplanering_1" name="Reseplanering" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\Stodtabeller_1" name="Stodtabeller" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\BiBerUtb_1" name="BiBerUtb" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\BiPerson_3" name="BiPerson" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\IvApp_1" name="IvApp" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\IvCode_2" name="IvCode" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\IvEntity_2" name="IvEntity" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\IvFaq_1" name="IvFaq" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\IvMedd_1" name="IvMedd" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\IvRole_1" name="IvRole" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\IvSvc_1" name="IvSvc" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\IvUser_2" name="IvUser" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\IvVar_1" name="IvVar" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\IpPlisNytt_1" name="IpPlisNytt" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\IpServer_1" name="IpServer" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\IpTjanst_2" name="IpTjanst" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\GuPer_1" name="GuPer" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\HvPerson_1" name="HvPerson" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\PkPer_1" name="PkPer" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\PpMed_1" name="PpMed" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\PpNyPerson_3" name="PpNyPerson" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\PpSyom_1" name="PpSyom" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\RkAns_1" name="RkAns" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\RkBsl_1" name="RkBsl" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\RkBtk_3" name="RkBtk" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\RkFar_2" name="RkFar" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\RkHor_2" name="RkHor" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\RkInr_1" name="RkInr" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\RkKom_1" name="RkKom" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\RkLkf_1" name="RkLkf" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\RkPar_1" name="RkPar" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\RkPko_1" name="RkPko" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\RkRer_1" name="RkRer" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\RkSlt_1" name="RkSlt" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\RkTil_1" name="RkTil" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\SaBmi_1" name="SaBmi" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\SaHan_1" name="SaHan" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\SaLnd_1" name="SaLnd" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\SaMas_1" name="SaMas" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\SaMon_1" name="SaMon" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\SaPup_1" name="SaPup" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\PlisRun_2" name="PlisRun" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\IvProj_1" name="IvProj" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\RkOrg_3" name="RkOrg" virtual-servers="server1"/>
    <j2ee-application enabled="true" location="C:\Sun\AppServer7\domains\domain1\server1\applications\j2ee-apps\IbSys_1" name="IbSys" virtual-servers="server1"/>
    </applications>
    </server>
    /Gunnar

  • CAF Attachments error

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         at com.sap.practiceproject.besrv.testattachments.TestAttachmentsServiceBean.update(TestAttachmentsServiceBean.java:135)
         at com.sap.practiceproject.besrv.testattachments.TestAttachmentsServiceLocalLocalObjectImpl0.update(TestAttachmentsServiceLocalLocalObjectImpl0.java:478)
         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    Caused by: com.sap.caf.rt.exception.DataAccessException: Business entity sap.com/practiceproject/TestAttachments is locked by CAF & SAP BW integration
         at com.sap.caf.rt.bol.da.jdo.JDODADataAccessService.store(JDODADataAccessService.java:889)
         ... 58 more
    Caused by: javax.jdo.JDODataStoreException: Object "3333bf70-a6d0-11dc-91e4-000d6140ca38" not found
         at com.sap.jdo.sql.jdbc.request.JDBCRequest.objectNotFoundException(JDBCRequest.java:291)
         at com.sap.jdo.sql.jdbc.request.basic.JDBCFetchRequest.execute(JDBCFetchRequest.java:151)
    Can you plz tell me am i missing anything?
    Thanks & Regards
    Sampath.G

  • JDOFatalDataStoreException

    Hello,
    I have some strange behaviors with KodoJDO, I use the last version.
    1 - Runing error
    =============
    When I start an application that use Kodo, the VM do the following error ;
    A nonfatal internal JIT (3.10.107(x)) error 'Relocation error: NULL
    relocation target' has occurred in :
    'org/apache/crimson/parser/Parser2.maybeComment (Z)Z': Interpreting
    method. Please report this error in detail to
    http://java.sun.com/cgi-bin/bugreport.cgi
    I also use VisualAge as IDE, and it sounds that VA has also some problems
    with Kodo !
    Maybe the jar has some problems ? I cannot use Kodo with VA due to this
    problem.
    2 - I start the schema tool
    =====================
    When I start the schema tool, I have the following error. and no more
    information
    Exception in thread "main" java.lang.ExceptionInInitializerError:
    javax.jdo.JDOFatalDataStoreException
    NestedExceptions:
    java.sql.SQLException
    at
    com.techtrader.modules.jdo.impl.jdbc.JDBCPersistenceManagerFactory.setup(JDBCPersistenceManagerFactory.java,Compiled
    Code)
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.privateSetup(PersistenceManagerFactoryImpl.java:496)
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.getPersiste
    nceManager(PersistenceManagerFactoryImpl.java:61)
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.getPersistenceManager(PersistenceManagerFactoryImpl.java:50)
    at
    lds.osl.jdo.JDOContextFactory.getCurrentPersistenceManager(JDOContextFactory.java:49)
    at lds.ecm.cbo.CBOCode.getInstancesOf(CBOCode.java:56)
    at lds.ecm.cbo.CBOCode.getInstancesOf(CBOCode.java:76)
    at lds.ecm.cbo.CBOCode.getInstanceOf(CBOCode.java:42)
    at lds.ecm.cbo.CBOCurrency.getInstance(CBOCurrency.java:80)
    at lds.ecm.cbo.CBOCurrency.getDefaultInstance(CBOCurrency.java:69)
    at lds.ecm.instruments.Instrument.<init>(Instrument.java:18)
    at lds.ecm.instruments.Instrument.<clinit>(Instrument.java)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java, Compiled Code)
    at
    com.techtrader.modules.jdo.impl.jdbc.schema.SchemaTool.main(SchemaTool.java,
    Compiled Code)
    ( Can we have direct support from techtrader, I have sent severals mails
    without answer )
    Please help me for theses problems
    Regards
    Christophe Demez
    LDS

    testing - please ignore.
    <[email protected]> wrote in message
    news:[email protected]...
    Hello,
    I have some strange behaviors with KodoJDO, I use the last version.
    1 - Runing error
    =============
    When I start an application that use Kodo, the VM do the following error ;
    A nonfatal internal JIT (3.10.107(x)) error 'Relocation error: NULL
    relocation target' has occurred in :
    'org/apache/crimson/parser/Parser2.maybeComment (Z)Z': Interpreting
    method. Please report this error in detail to
    http://java.sun.com/cgi-bin/bugreport.cgi
    I also use VisualAge as IDE, and it sounds that VA has also some problems
    with Kodo !
    Maybe the jar has some problems ? I cannot use Kodo with VA due to this
    problem.
    2 - I start the schema tool
    =====================
    When I start the schema tool, I have the following error. and no more
    information
    Exception in thread "main" java.lang.ExceptionInInitializerError:
    javax.jdo.JDOFatalDataStoreException
    NestedExceptions:
    java.sql.SQLException
    at
    com.techtrader.modules.jdo.impl.jdbc.JDBCPersistenceManagerFactory.setup(JDB
    CPersistenceManagerFactory.java,Compiled
    >
    Code)
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.privateSetu
    p(PersistenceManagerFactoryImpl.java:496)
    >
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.getPersiste
    >
    nceManager(PersistenceManagerFactoryImpl.java:61)
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.getPersiste
    nceManager(PersistenceManagerFactoryImpl.java:50)
    >
    at
    lds.osl.jdo.JDOContextFactory.getCurrentPersistenceManager(JDOContextFactory
    ..java:49)
    >
    at lds.ecm.cbo.CBOCode.getInstancesOf(CBOCode.java:56)
    at lds.ecm.cbo.CBOCode.getInstancesOf(CBOCode.java:76)
    at lds.ecm.cbo.CBOCode.getInstanceOf(CBOCode.java:42)
    at lds.ecm.cbo.CBOCurrency.getInstance(CBOCurrency.java:80)
    at lds.ecm.cbo.CBOCurrency.getDefaultInstance(CBOCurrency.java:69)
    at lds.ecm.instruments.Instrument.<init>(Instrument.java:18)
    at lds.ecm.instruments.Instrument.<clinit>(Instrument.java)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java, Compiled Code)
    at
    com.techtrader.modules.jdo.impl.jdbc.schema.SchemaTool.main(SchemaTool.java,
    >
    Compiled Code)
    ( Can we have direct support from techtrader, I have sent severals mails
    without answer )
    Please help me for theses problems
    Regards
    Christophe Demez
    LDS

  • Initializer exception when running on windows

    Hi,
    I've recently tried running one of my applications on windows and was
    surprised to see that I was unable to create a PersistenceManager due to the
    following exception:
    Exception in thread "main" java.lang.ExceptionInInitializerError:
    javax.jdo.JDOFatalDataStoreException: gnu/regexp/REException
    NestedExceptions:
    java.sql.SQLException: gnu/regexp/REException
    at
    com.techtrader.modules.jdo.impl.jdbc.JDBCPersistenceManagerFactory.setup(JDB
    CPersistenceManagerFactory.java:174)
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.privateSetu
    p(PersistenceManagerFactoryImpl.java:496)
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.getPersiste
    nceManager(PersistenceManagerFactoryImpl.java:61)
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.getPersiste
    nceManager(PersistenceManagerFactoryImpl.java:50)
    at com.hcm.tools.jdo.JDOFactory.<clinit>(JDOFactory.java:101)
    at com.hcm.security.SecurityHelper.getStocks(SecurityHelper.java:82)
    I'm using a JDBC factory with these settings: optimistic true, retainValues
    true, nonTransactionalRead true. This program runs correctly when I run it
    on Linux. Could this be some kind of CLASSPATH problem with my windows
    environment, or is this a problem with Kodo? What does this exception
    mean? Thanks for your help.
    -Eric

    Hi Pat,
    The new stack trace looks a lot like the original, but maybe this will give
    you a little more info. Here it is:
    java.sql.SQLException: gnu/regexp/REException
    at
    com.techtrader.modules.jdo.impl.jdbc.schema.DB.getPersistentTypes(DB.java:26
    2)
    at
    com.techtrader.modules.jdo.impl.jdbc.JDBCPersistenceManagerFactory.setup(JDB
    CPersistenceManagerFactory.java:170)
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.privateSetu
    p(PersistenceManagerFactoryImpl.java:496)
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.getPersiste
    nceManager(PersistenceManagerFactoryImpl.java:61
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.getPersiste
    nceManager(PersistenceManagerFactoryImpl.java:50
    at com.hcm.tools.jdo.JDOFactory.<clinit>(JDOFactory.java:102)
    at com.hcm.security.SecurityHelper.getStocks(SecurityHelper.java:82)
    at com.hcm.security.SecurityHelper.getStock(SecurityHelper.java:108)
    at
    com.hcm.security.test.SecurityTest.listStock(SecurityTest.java:198)
    at com.hcm.security.test.SecurityTest.main(SecurityTest.java:44)
    Exception in thread "main" java.lang.ExceptionInInitializerError:
    javax.jdo.JDOFatalDataStoreException: gnu/regexp/REException
    NestedExceptions:
    java.sql.SQLException: gnu/regexp/REException
    at
    com.techtrader.modules.jdo.impl.jdbc.JDBCPersistenceManagerFactory.setup(JDB
    CPersistenceManagerFactory.java:174)
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.privateSetu
    p(PersistenceManagerFactoryImpl.java:496)
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.getPersiste
    nceManager(PersistenceManagerFactoryImpl.java:61
    at
    com.techtrader.modules.jdo.runtime.PersistenceManagerFactoryImpl.getPersiste
    nceManager(PersistenceManagerFactoryImpl.java:50
    at com.hcm.tools.jdo.JDOFactory.<clinit>(JDOFactory.java:102)
    at com.hcm.security.SecurityHelper.getStocks(SecurityHelper.java:82)
    at com.hcm.security.SecurityHelper.getStock(SecurityHelper.java:108)
    at
    com.hcm.security.test.SecurityTest.listStock(SecurityTest.java:198)
    at com.hcm.security.test.SecurityTest.main(SecurityTest.java:44)
    Thanks,
    Eric
    "Patrick Linskey" <[email protected]> wrote in message
    news:[email protected]...
    "Eric Lindauer" <[email protected]> writes:
    Exception in thread "main" java.lang.ExceptionInInitializerError:
    javax.jdo.JDOFatalDataStoreException: gnu/regexp/REException
    NestedExceptions:
    java.sql.SQLException: gnu/regexp/REException
    at
    com.techtrader.modules.jdo.impl.jdbc.JDBCPersistenceManagerFactory.setup(JDB
    CPersistenceManagerFactory.java:174)Eric,
    Can you provide me with a little more information? In JDOFactory,
    please intercept the exception and add the following code:
    catch (JDOFatalDataStoreException jfdse)
    for (int i = 0; i < jfdse.getNestedExceptions ().length; i++)
    jfdse.getNestedExceptions ().printStackTrace ();
    throw jfdse;
    and post the output. This will print out the full stack trace of the
    nested exception.
    I suspect that somehow, gnu.regexp.REException or some other
    gnu.regexp class made its way into your persistent-types array, either
    in the database (if you're using the JDO_SCHEMA_METADATAX table for
    persistent type storage) or in your system.prefs. Run 'schematool
    -action list' and see if there are any mentions of any gnu.regexp
    classes there.
    My hunch is based on the fact that we do not use the gnu.regexp
    package anywhere in our code.
    Additionally, I am sure that you and everyone else will be pleased to
    know that we are in the process of auditing our exception-throwing
    code to ensure that more detailed and useful messages are thrown in
    exceptional circumstances.
    -Patrick
    Patrick Linskey [email protected]
    SolarMetric Inc. http://www.solarmetric.com

  • Cannot bind Referenceable in JNDI?

    When I try to bind the following Referenceable object to the JNDI tree in
    WL 6.0 SP2, I get the following exception:
    public class Foo
    implements javax.naming.Referenceable
    public javax.naming.Reference getReference ()
    // just a test
    return new javax.naming.Reference (Foo.class.getName ());
    javax.naming.ConfigurationException. Root exception is java.rmi.MarshalException:
    failed to marshal public abstract void
    weblogic.jndi.internal.NamingNode.bind(
    java.lang.String,java.lang.Object,java.util.Hashtable)
    throws javax.naming.NamingException,java.rmi.RemoteException; nested exception is:
    java.io.NotSerializableException: com.techtrader.modules.jdo.impl.jdbc.Foo
    java.io.NotSerializableException: com.techtrader.modules.jdo.impl.jdbc.Foo
    at java.lang.Throwable.<init>(Throwable.java:96)
    at java.lang.Exception.<init>(Exception.java:44)
    at java.io.IOException.<init>(IOException.java:49)
    at java.io.ObjectStreamException.<init>(ObjectStreamException.java:31)
    at java.io.NotSerializableException.<init>(NotSerializableException.java:35)
    at java.io.ObjectOutputStream.outputObject(ObjectOutputStream.java:1161)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:372)
    at weblogic.common.internal.ChunkedObjectOutputStream.writeObject(ChunkedObjectOutputStream.java:102)
    at weblogic.common.internal.ChunkedObjectOutputStream.writeObject(ChunkedObjectOutputStream.java:108)
    at weblogic.rmi.internal.ObjectIO.writeObject(ObjectIO.java:19)
    at weblogic.rmi.internal.BasicRemoteRef.marshalArgs(BasicRemoteRef.java:121)
    at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:246)
    at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:225)
    at weblogic.jndi.internal.ServerNamingNode_WLStub.bind(ServerNamingNode_WLStub.java:436)
    at weblogic.jndi.internal.WLContextImpl.bind(WLContextImpl.java:337)
    at javax.naming.InitialContext.bind(InitialContext.java:359)
    at com.techtrader.modules.jdo.impl.jdbc.JNDIJDOFactory.<init>(JNDIJDOFactory.java:36)
    at com.techtrader.modules.jdo.impl.jdbc.JNDIJDOFactory.main(JNDIJDOFactory.java:77)
    Why can't I bind a referenceable object?
    -Marc

    Your class Foo needs to implement java.io.Serializable interface.
    Shiva.
    Marc Prud'hommeaux wrote:
    When I try to bind the following Referenceable object to the JNDI tree in
    WL 6.0 SP2, I get the following exception:
    public class Foo
    implements javax.naming.Referenceable
    public javax.naming.Reference getReference ()
    // just a test
    return new javax.naming.Reference (Foo.class.getName ());
    javax.naming.ConfigurationException. Root exception is java.rmi.MarshalException:
    failed to marshal public abstract void
    weblogic.jndi.internal.NamingNode.bind(
    java.lang.String,java.lang.Object,java.util.Hashtable)
    throws javax.naming.NamingException,java.rmi.RemoteException; nested exception is:
    java.io.NotSerializableException: com.techtrader.modules.jdo.impl.jdbc.Foo
    java.io.NotSerializableException: com.techtrader.modules.jdo.impl.jdbc.Foo
    at java.lang.Throwable.<init>(Throwable.java:96)
    at java.lang.Exception.<init>(Exception.java:44)
    at java.io.IOException.<init>(IOException.java:49)
    at java.io.ObjectStreamException.<init>(ObjectStreamException.java:31)
    at java.io.NotSerializableException.<init>(NotSerializableException.java:35)
    at java.io.ObjectOutputStream.outputObject(ObjectOutputStream.java:1161)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:372)
    at weblogic.common.internal.ChunkedObjectOutputStream.writeObject(ChunkedObjectOutputStream.java:102)
    at weblogic.common.internal.ChunkedObjectOutputStream.writeObject(ChunkedObjectOutputStream.java:108)
    at weblogic.rmi.internal.ObjectIO.writeObject(ObjectIO.java:19)
    at weblogic.rmi.internal.BasicRemoteRef.marshalArgs(BasicRemoteRef.java:121)
    at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:246)
    at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:225)
    at weblogic.jndi.internal.ServerNamingNode_WLStub.bind(ServerNamingNode_WLStub.java:436)
    at weblogic.jndi.internal.WLContextImpl.bind(WLContextImpl.java:337)
    at javax.naming.InitialContext.bind(InitialContext.java:359)
    at com.techtrader.modules.jdo.impl.jdbc.JNDIJDOFactory.<init>(JNDIJDOFactory.java:36)
    at com.techtrader.modules.jdo.impl.jdbc.JNDIJDOFactory.main(JNDIJDOFactory.java:77)
    Why can't I bind a referenceable object?
    -Marc

  • 2 Phase Commit aka XA

    I have noticed that there is open bug (211) that refers to 2 phase commit
    and I just curious what the exact problem is.
    Does that imply that the current version (2.4) does not allow 2 phase
    commit?
    Let's say I need to integrate JDO into global transaction (managed by App
    server) and I may need during that transaction update multiple databases.
    It could be implemented via JDO (multiple PMFs) or it could be a
    combination of JDO and JDBC/EJB happening during the same transaction.
    Am I likely to hit a problem if I do that?
    Thank you,
    Petr

    Petr-
    In article <avflf9$ccu$[email protected]>, Petr Bulanek wrote:
    Hi Marc,
    Well, what does it really mean that \'Kodo will not respect the
    semantics of the 2-phase-commit protocol\'?Are you saying that Kodo may commit my changes even if the other datastore
    decides to roll the transaction back at the last moment?
    That if Kodo has difficulties to commit, it would not roolback the global
    transaction and as a result the other datastores will commit?You are correct: we currently do not do anything special for 2 phase
    commit at all.
    I mean, this is quite important and would like to know exactly what to
    expect so I can work around it.
    Thank you,
    Petr
    P.S.
    I \'think\' I saw the plan to fix this in 2.5.x. What is the planned
    release date?It is in the milestone for 2.5. We can't make any committments on its
    release date, but it will hopefully be out within 2 months.
    Marc Prud\'hommeaux wrote:
    Petr-
    You can integrate Kodo\'s JDO transactions into the Application Server\'s
    global transaction (which might also commit multiple other
    transactions). The only issue is that Kodo will not respect the
    semantics of the 2-phase-commit protocol.
    We expect to have this issue resolved soon.
    In article <avdri3$f2o$[email protected]>, Petr Bulanek wrote:
    I have noticed that there is open bug (211) that refers to 2 phase commit
    and I just curious what the exact problem is.
    Does that imply that the current version (2.4) does not allow 2 phase
    commit?
    Let\'s say I need to integrate JDO into global transaction (managed by App
    server) and I may need during that transaction update multiple databases.
    It could be implemented via JDO (multiple PMFs) or it could be a
    combination of JDO and JDBC/EJB happening during the same transaction.
    Am I likely to hit a problem if I do that?
    Thank you,
    Petr
    Marc Prud\'hommeaux [email protected]
    SolarMetric Inc. http://www.solarmetric.com
    Marc Prud'hommeaux [email protected]
    SolarMetric Inc. http://www.solarmetric.com

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