EJB mapping to database tables

Hi Experts,
I am moving my application from JBoss server to Netweaver server. For this i have to do all the maaping in ejb-jar and ejb-j2ee engine and persistence xml files. I am wondering the way how can i use my existing database tables for mapping to persistence xml.
Every example says i have to create java dictionary project but if i go like this then i have to create hundreds of tables again which are already in my SQL database. Please let me know how i can map my database tables to my application fro deploying to Netweaver server.
Thanks in Advance
Regards,
Chirag

Hello,
Java Dictionary stores its metainformation in xml - files, it meight be possible to create them on basis of existing tables.
But: Java Dictionary only supports the default "system" - database that is unterneath NWAS.
As i understand your problem, you want to connet to an other (existing) database - so you will have to create the mapping in persistence.xml. I would try to use a xml transformation to create persistence.xml
hope it helps
Johannes

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How to generate the java classes of the database tables

Hi,
I am using Sun One 4 update1 CE for generate java classes of tables from an Oracle database. I have got the database schema file. However, when I right clicked on the database schema file, there is no selection for "Generate Java...".
Besides, when I was trying to use database Schema template from the project tab in the explore window by double click on the project, after following all the procedures of inputing the database url, driver, uername, password, and select the table to generate, the following exception came out:
Tue Jan 28 16:22:28 PST 2003: java.lang.NullPointerException: Posted StackTrace
Annotation: Exception occurred in Request Processor
org.openide.util.RequestProcessor$Holder: Posted StackTrace(task org.netbeans.core.ModuleActions$1@e4b7d3 [-31035, 1, -1])
at org.openide.util.RequestProcessor$Holder.fillInStackTrace(RequestProcessor.java:300)
at java.lang.Throwable.<init>(Throwable.java:195)
at java.lang.Exception.<init>(Exception.java:41)
at org.openide.util.RequestProcessor$Holder.<init>(RequestProcessor.java:280)
at org.openide.util.RequestProcessor$Task.createHolder(RequestProcessor.java:333)
at org.openide.util.RequestProcessor.post(RequestProcessor.java:100)
at org.openide.util.RequestProcessor.post(RequestProcessor.java:73)
at org.netbeans.core.ModuleActions.invokeAction(ModuleActions.java:123)
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:324)
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at org.openide.explorer.view.TreeView$PopupSupport.mouseClicked(TreeView.java:958)
at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:208)
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at org.openide.util.Task.run(Task.java:152)
[catch] at org.openide.util.RequestProcessor$ProcessorThread.run(RequestProcessor.java:622)
Any suggestions to the solution of these problems are greatly appreciated. Thanks.
Yi-Xiong

you also could use this to generate java beans out of database tables:
     * Convert SQL type code to corresponding Java class.
     * @param sqlType One of java.sql.Types.xxx.
     * @return Class that corresponds to the given type.
    public static Class toClass(int sqlType) {
        Class result = null;
        switch (sqlType) {
        case Types.BIGINT :
        case Types.INTEGER :
        case Types.SMALLINT :
        case Types.TINYINT :
            result = Integer.class;
            break;
        case Types.BIT :
        case Types.BOOLEAN :
            result = Boolean.class;
            break;
        case Types.CHAR :
            result = Character.class;
            break;
        case Types.DATE :
        case Types.TIMESTAMP :
            result = java.util.Date.class;
            break;
        case Types.DECIMAL :
        case Types.DOUBLE :
        case Types.FLOAT :
            result = BigDecimal.class;
            break;
        case Types.NULL :
            result = null;
            break;
        case Types.LONGVARCHAR :
        case Types.VARCHAR :
        default :
            result = String.class;
            break;
        return result;
    }//toClass()
     * Create a Java bean (source file) to map a database table. The class name is the table name, the bean
     * properties are the table columns. Each column will result in a property with a corresponding set() and
     * get() method.
     * @param connection Database connection to load table from.
     * @param tableName Name of table to create the bean for.
     * @param packageName Name of package for Java class.
     * @param className Name of Java class to create.
     * @param superClass Optional name of super class.
     * @return Java source of container class.
     * @throws SQLException, IOException
     * @see <a href="http://java.sun.com/blueprints/corej2eepatterns/Patterns/DataAccessObject.html">Data Access Object </a>
    public static String getTableBean(Connection connection, String tableName, String packageName, String className, String superClass)
            throws SQLException, IOException {
        String result = null;
        if (connection != null && tableName != null) {
            //read table columns:
            DatabaseMetaData dmd = connection.getMetaData();
            ResultSet resultSet = dmd.getColumns(null, "%", tableName, null);
            Properties props = new Properties();
            if (resultSet != null) {
                while (resultSet.next()) { //for each table
                    String name = resultSet.getString("COLUMN_NAME");
                    int type = resultSet.getInt("DATA_TYPE");
                    props.setProperty(name, ""+type);
                }//next table
            }//else: resultSet unavailable
            Set imports = new HashSet();
            StringBuffer sb1 = new StringBuffer(); //fields
            StringBuffer sb2 = new StringBuffer(); //methods
            StringBuffer sb3 = new StringBuffer(); //toString()
            Enumeration enum = props.keys();
            while (enum.hasMoreElements()) {
                String columnName = (String) enum.nextElement();
                //change first character of column name to lower case:
                String fieldName = columnName.substring(0, 1).toLowerCase() + columnName.substring(1);
                //datat type:
                String stype = props.getProperty(columnName, ""+Types.VARCHAR);
                int type = (new Integer(stype)).intValue();
                Class javaClass = toClass(type);
                String typeName = "String"; //default
                if (javaClass != null) {
                    String javaClassName = javaClass.getName();
                    int lastDot = javaClassName.lastIndexOf('.');
                    if (lastDot >= 0) {
                        typeName = javaClassName.substring(lastDot + 1);
                    if (!javaClassName.startsWith("java.lang.")) {
                        imports.add(javaClassName);
                //field:
                sb1.append("    /** ");
                sb1.append(columnName);
                sb1.append(" */\n");
                sb1.append("    private ");
                sb1.append(typeName);
                sb1.append(" ");
                sb1.append(fieldName);
                sb1.append(" = null;\n");
                //toString() method:
                sb3.append("        sb.append(\",");
                sb3.append(fieldName);
                sb3.append("=\");\n");
                sb3.append("        sb.append(");
                sb3.append(fieldName);
                sb3.append(");\n");
                //set method:
                sb2.append("    /**\n");
                sb2.append("     * Set ");
                sb2.append(columnName);
                sb2.append(".\n     *\n     * @param value ");
                sb2.append(columnName);
                sb2.append(" to set.\n");
                sb2.append("     */\n");
                sb2.append("    public void set");
                sb2.append(columnName);
                sb2.append("(");
                sb2.append(typeName);
                sb2.append(" value) {\n        ");
                sb2.append(fieldName);
                sb2.append(" = value;\n    }\n\n");
                //get method:
                sb2.append("    /**\n");
                sb2.append("     * Get ");
                sb2.append(columnName);
                sb2.append(".\n     *\n     * @return ");
                sb2.append(columnName);
                sb2.append(".\n     */\n");
                sb2.append("    public ");
                sb2.append(typeName);
                sb2.append(" get");
                sb2.append(columnName);
                sb2.append("() {\n");
                sb2.append("        return ");
                sb2.append(fieldName);
                sb2.append(";\n    }\n\n");
            }//next column
            //build class source code:
            StringBuffer sb = new StringBuffer();
            sb.append("/* $Header: /data/iComps/icf/prg/java/src/de/icomps/sql/JDBCUtils.java 9     24.10.03 14:25 Hilpert $ */\n");
            sb.append("package ");
            sb.append(packageName);
            sb.append(";\n\n");
            //import statements:
            Iterator iterator = imports.iterator();
            while (iterator.hasNext()) {
                String jcn = (String) iterator.next();
                sb.append("import ");
                sb.append(jcn);
                sb.append(";\n");
            if (imports.size() > 0) {
                sb.append("\n");
            //class:
            sb.append("/**\n");
            sb.append(" * Container class to store data of one record (row) of table '"+tableName+"'.\n");
            sb.append(" *\n");
            sb.append(" * @version $Revision: 9 $ ($Date: 24.10.03 14:25 $)\n");
            sb.append(" * @author $Author: Hilpert $\n");
            sb.append(" */\n");
            sb.append("public class ");
            sb.append(className);
            if (superClass != null) {
                sb.append(" extends ");
                sb.append(superClass);
            sb.append(" {\n\n");
            //fields:
            sb.append(sb1.toString());
            //methods:
            sb.append("\n\n");
            sb.append(sb2.toString()); //methods
            //overwrite toString() method:
            sb.append("    /**\n");
            sb.append("     * Overwrite super.\n");
            sb.append("     *\n     * @return String representation of the object.\n");
            sb.append("     */\n");
            sb.append("    public String toString() {\n");
            sb.append("        StringBuffer sb = new StringBuffer(super.toString());\n\n");
            sb.append(sb3.toString());
            sb.append("\n        return sb.toString();\n");
            sb.append("    }\n\n");
            sb.append("}//"+className);
            result = sb.toString();
        }//else: input unavailable
        return result;
    }//getTableBean()

"Economizing" in a list of maps with identical keys (like a database table)

Hi there!:
I've been checking this forum for information about something like what I state in the title of this message, but haven't found such a specific case. I'm commenting my doubt below.
I'm working with a list of maps whose keys are exactly the same in all them (they're of type String). Indeed it could be considered an extrapolation of a database table: The list contains maps which act as rows, and every map contains keys and values which represent column names and values.
However, this means to repeat the same key values on every map and this spends memory. Right, maybe it's not such a big spent, but since the list can contains thousands of maps, I think that it would be better to choose a more "economical" way to achieve the same result.
I had thought about building a class which stored everything as a list of lists and, internally, it mapped that String keys with the corresponding Integer indexes of every list. But then I realized that maybe I was re-inventing the wheel, because it's very probable that someone has already made that. Maybe is there a class on the Core API which allows that?
Thank you very much for your help.

Well, after re-reading the Java tutorial which is located in the Sun website I've came to a conclusion which I should have before, when I thought about using StringBuffers as keys of the maps instead of Strings.
I'm so used to build Strings using literals instead of the "new String ()" constructor (just as everyone) that I had forgotten that, as it happens with any kind of object but not the primary data types, Strings are not passed to the methods by value, but by reference. The fact of them being immutable made me think that they were passed by value.
Apart of that, my problem also was that using literals I was creating different String objects every time, despite the fact that they were equal about their content (making 400 different keys called "name" for example)
In other words, I was doing something like this:
// It makes a list of maps which will contain maps of boy's personal data (as if they were "rows" in a table).
List <Map <String, Object>> listData = new ArrayList <Map <String, Object>> (listBoy.size ());
// It loops over a list of Boy objects, obtained using EJB.
for (Boy boy : listBoy) {
     // It makes a new map containing only the information which I'm interested on from the Boy object.
     Map <String, Object> map = new HashMap <String, Object> (2);
     map.put ("name", boy.getName ());
     map.put ("surname", boy.getSurname ());
     // It adds the map to the list of data.
     listData.add (map);
}Well, the "problem" here (being too demanding, but I'm :P ) is that I was adding all the time new Strings objects as keys in every map. The key "name" in the first map was different from "name" in the second one and so on.
I guess that my knowledge got messed at certain point and thought that it was impossible to use exactly the same String object in different maps (the reference, not the same value!). Thus, my idea of using StringBuffers instead.
But thinking about it carefully, Why not to do this?:
List <Map <String, Object>> listData = new ArrayList <Map <String, Object>> (listBoy.size ());
// It makes the necessary String keys previously, instead of using literals on every loop later.
String name = "name";
String surname = "surname";
for (Boy boy : listBoy) {
     // It uses references (pointers) to the same String keys, instead of new ones every time.
     Map <String, Object> map = new HashMap <String, Object> (2);
     map.put (name, boy.getName ());
     map.put (surname, boy.getSurname ());
     listData.add (map);
}Unfortunately, the "hasCode" method on String is overloaded and instead of returning the typical hash code based on the single ID of the object in memory, it returns one based on its content. That way I can't make sure that the "name" key in one map refers to the same object in memory than another one. I know, I know. The common sense and the Java documentation confirm that, but had loved having an empiric way to demonstrate it.
I guess that using "javap" and disassembling the generated bytecode is the only way to make sure that it's that way.
I believe that it's solved now :) (if no one tells me the contrary). I still am mad at myself for thinking that Strings were passed by value. Thinking about it now it had no sense!
dannyyates: It's curious because re-reading every answer I think that you maybe were pointing to this solution already. But the sentence "you put the +same+ string" was a little ambiguous for me and thought that you meant putting the same String as "putting the same text" (which I already was doing), not the same object reference (in other words, using a common variable). I wish we could have continued discussing that in depth. Thanks a lot for your help anyway :) .

How to mapping Entity beans to existing database tables.

dear all
how can i mapping Entity beans to existing database tables and not to create new table in Orion.
thanks for any input.
seabin

* You define the name of the table that an Entity EJB maps to in orion-ejb-jar.xml. For eg:<entity-deployment name="MyEntityEJB" data-source="MyDS" table="MY_DB_TABLE" ...>* If you don't want to let Orion create the tables for your EJBs, have the following entry in either of the files given below:<orion-application autocreate-tables="false" ...>1) <orion-home>/j2ee/home/config/application.xml (global effect)
2) orion-application.xml file of that particular application (application specific)
HTH.

Mapping the CMP Fields with the Database Table using Websphere???

Hi,
How to Map the CMP Fields with the Database Table using Websphere
thru ejb.jar.xml???
Thanks,
JavaCrazyLover

Hi,
How to Map the CMP Fields with the Database Table using Websphere
thru ejb.jar.xml???
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JavaCrazyLover

Problem with mapping the Entity beans onto database tables

Hi,
I got a problem with mapping the Entity beans onto database tables. Here are what I did:
First Step:
asant capture-schema
Second Step:
capture-schema -driver com.pointbase.jdbc.jdbcUniversalDriver -dburl jdbc:pointbase:server://localhost/sun-appserv-samples -username pbPublic -password pbpublic -table APPLICANT -table APPLICANTSKILL -table CUSTOMER -table LOCATION -table job -table JOBSKILL -table SKILL -out build/agency.dbschema
The first step was fine. But, in the second step, I got the error message as follow:
using dburl:jdbc:pointbase:server://localhost/sun-appserv-samples
using username:pbPublic
using password:pbpublic
using driver:com.pointbase.jdbc.jdbcUniversalDriver
using schemaname:null
using output file:build/agency.dbschema
JDO71100: Failed to find a class. Verify that the class is available on your CLASSPATH
java.lang.ClassNotFoundException: com.pointbase.jdbc.jdbcUniversalDriver
at java.net.URLClassLoader$1.run(URLClassLoader.java:199)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:141)
at com.sun.forte4j.modules.dbmodel.jdbcimpl.ConnectionProvider.<init>(Co
nnectionProvider.java:38)
at com.sun.jdo.api.persistence.mapping.ejb.CaptureSchema.main(CaptureSch
ema.java:130)
at com.sun.jdo.spi.persistence.support.ejb.util.CaptureSchemaWrapper.mai
n(CaptureSchemaWrapper.java:29)
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You need to add the pbclient.jar or some similar name like that, in the CalssPath.

Can't drop database table objects on a EJB Diagram.

JDeveloper 10.1.3 EA.
When I drop a database table object on a EJB Diagram the error below occurs. Also dropping components from the Component Palette doesn't work. A wizard opens, but after completing that, nothing is on the EJB Diagram.
However, after dropping a table and a restart of JDeveloper, there is an empty 'tablename EJB' on the EJB Diagram, but a click with the mouse on it generates the same error as the drop did.
Simular errors occur with JDeveloper 10.1.2, so writing this I realize that this might be a database version problem. I'm using 9i! I'll try 10g and see what happens.
Message
BME-99003: An error occurred, so processing could not continue.
Cause
The application has tried to de-reference an invalid pointer. This exception should have been dealt with programmatically. The current activity may fail and the system may have been left in an unstable state. The following is a stack trace.
java.lang.NullPointerException
     at oracle.jdevimpl.xml.DescriptorNode.getWhitespaceHandler(DescriptorNode.java:349)
     at oracle.jdevimpl.xml.DescriptorNodeDomIO.load(DescriptorNodeDomIO.java:164)
     at oracle.jdeveloper.xml.BindingIO.load(BindingIO.java:43)
     at oracle.jdevimpl.xml.DescriptorNode.getNewDescriptorImpl(DescriptorNode.java:506)
     at oracle.jdevimpl.xml.DescriptorNode.getDescriptor(DescriptorNode.java:140)
     at oracle.jdeveloper.xml.oc4j.ejb.OrionEjbJarNode.getOrionEjbJar(OrionEjbJarNode.java:145)
     at oracle.jdeveloper.ejb.BaseEjbModuleContainer.getOrionEjbJar(BaseEjbModuleContainer.java:476)
     at oracle.jdeveloper.ejb.modeler.diagram.dropHandler.TableDropEJB21Handler.isAvailable(Unknown Source)
     at oracle.bm.diagrammer.ui.DropChooserPanel.populateOptions(Unknown Source)
     at oracle.bm.diagrammer.ui.DropChooserPanel.createComponents(Unknown Source)
     at oracle.bm.diagrammer.ui.DropChooserPanel.<init>(Unknown Source)
     at oracle.bm.diagrammer.dropHandler.AbstractChooserDropHandler.createPanel(Unknown Source)
     at oracle.bm.diagrammer.dropHandler.AbstractChooserDropHandler.processObjects(Unknown Source)
     at oracle.bm.addinUtil.IDEAppContext$4.performAction(Unknown Source)
     at oracle.bm.diagrammer.LockMonitor.performLockedAction(Unknown Source)
     at oracle.bm.diagrammer.BaseDiagram.performDiagramLockedAction(Unknown Source)
     at oracle.bm.addinUtil.IDEAppContext.dropNavigatorNodeLater(Unknown Source)
     at oracle.bm.addinUtil.IDEAppContext$5.run(Unknown Source)
     at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
     at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
     at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
     at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
Action
If further errors occur, you should restart the application.
Also, report the problem on the JDeveloper forum on otn.oracle.com, or contact Oracle support, giving the information from this message.
________________________________________________________________________________

Hi lisa, you've said that the problem does not occur in the 10.1.3 build but I have almost the same problem with the BME-99003 error message.
I used the same workaround "changing the regional settings from BE to US" and the BME-99003 problem disappears :-)
Here is the error message that I receive while I add a table into the EJBDiagram. I'm using
windows XP SP2
ADF Business Components     10.1.3.34.12
Java Platform     1.5.0_04
Oracle IDE     10.1.3.34.12
Struts Modeler Version     10.1.3.34.12
UML Modelers Version     10.1.3.34.12
Versioning Support     10.1.3.34.12
Abdelkrim BOUJRAF
Message
BME-99003: An error occurred, so processing could not continue.
Cause
The application has tried to de-reference an invalid pointer. This exception should have been dealt with programmatically. The current activity may fail and the system may have been left in an unstable state. The following is a stack trace.
java.lang.NullPointerException
at oracle.jdevimpl.xml.DescriptorNode.getWhitespaceHandler(DescriptorNode.java:349)
at oracle.jdevimpl.xml.DescriptorNodeDomIO.load(DescriptorNodeDomIO.java:164)
at oracle.jdeveloper.xml.BindingIO.load(BindingIO.java:43)
at oracle.jdevimpl.xml.DescriptorNode.getNewDescriptorImpl(DescriptorNode.java:506)
at oracle.jdevimpl.xml.DescriptorNode.getDescriptor(DescriptorNode.java:140)
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at oracle.jdeveloper.xml.oc4j.ejb.OrionEjbJarHelper.findOrionEjbJar(OrionEjbJarHelper.java:82)
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at oracle.jdeveloper.ejb.modeler.diagram.dropHandler.TableDropEJB21Handler.processTableNodes(Unknown Source)
at oracle.bm.typemodel.dropHandler.TableDropSubHandler.processDBObjectNodes(Unknown Source)
at oracle.bm.typemodel.dropHandler.DBObjectDropSubHandler.processObjects(Unknown Source)
at oracle.bm.diagrammer.dropHandler.AbstractChooserDropHandler.processObjectsImpl(Unknown Source)
at oracle.bm.diagrammer.dropHandler.AbstractChooserDropHandler.processObjects(Unknown Source)
at oracle.bm.addinUtil.IDEAppContext$4.performAction(Unknown Source)
at oracle.bm.diagrammer.LockMonitor.performLockedAction(Unknown Source)
at oracle.bm.diagrammer.BaseDiagram.performDiagramLockedAction(Unknown Source)
at oracle.bm.addinUtil.IDEAppContext.dropNavigatorNodeLater(Unknown Source)
at oracle.bm.addinUtil.IDEAppContext$5.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
Action
If further errors occur, you should restart the application.
Also, report the problem on the JDeveloper forum on otn.oracle.com, or contact Oracle support, giving the information from this message.

If I have an EntityBean that mappes to two tables within one database, when I create that EJB, whoes reponsibilty to generate the primary key in database table? The RDBMS or EJB?

If I have an EntityBean that mappes to two tables within one database, when I create
that EJB, whoes reponsibilty to generate the primary key in database table? The
RDBMS or EJB?
Thanks,
JW

Refer to http://e-docs.bea.com/wls/docs81/faq/ejb.html/#257430
"Jingwei Zhang" <[email protected]> wrote:
>
If I have an EntityBean that mappes to two tables within one database,
when I create
that EJB, whoes reponsibilty to generate the primary key in database
table? The
RDBMS or EJB?
Thanks,
JW

How to keep EJBs and Database Tables in sync ?

Hello dear fellow JDeveloper 11 users,
after i created some EJB 3 entity beans and some offline database table definitions
i would like to get them linked to each other, and to keep them in sync.
where do i do that? cant find it, have i missed it?
thanks for any tips,
thomas
thomas.nagel (at) materna.de

Both questions are not JDev 11 specific and work in JDev 10.1.3.x also.
To keep entities in sync you have tell the underlying orm layer when to refresh its cache. One way for doing this is to use hints in the NamedQueries like this one
                hints =
                { @QueryHint(name = TopLinkQueryHints.REFRESH, value = HintValues.TRUE)Linking EJBs could be easily done (ie automagically during EJB from Tables creation) if the underlying datamodel uses foreign keys relationships.
--olaf

How to map single input value to Two columns of Database table using format file of Bulk Copy Process

Hi All,
Am using OPENROWSET to load the file data into table, here the problem is i need to map same input value to two different columns of table, As format file doesn't allow the duplicate numbers am unable to insert same value to two columns, please help me to
find a solution for this.
i can use only OPENROWSET because i need to insert some default values also which come based on file. only the problem is how to map same input value to two different columns of table. please give me the suggestions.
Thanks,
Sudhakar

From what you say:
INSERT tbl(col1, col2)
SELECT col1, col1
FROM OPENROWSET(....)
But I guess it is more difficult. You need to give more details. What sort of data source do you have? What does your query look like? The target table?
Erland Sommarskog, SQL Server MVP, [email protected]
Hi Erland,
Thanks for your response
my source file is text file with | symbol separate for ex:
1002|eTab |V101|eTablet|V100|Logic|LT-7|Laptops|SCM
Database table have columns like
column1,column2,column3...etc, now i need to insert same value from input file into two columns for ex:
the eTab value from text file has to be insert into column2 and column3 of
table
we cannot change format file like below one
for the above situation how can we insert eTab into column2 and column3
Thanks,
Sudhakar.

Database table 'e' is not accessible

Hi all,
like many others in the web I'm having problems deploying CMP Beans on BEA. I'm using Weblogic 8.1 and
get the following error message:
"[EJB:011076]Unable to deploy the EJB 'B' because the database table 'b' is not accessible. Please ensure that this table exists and is accessible."
After a lot of research I understand the problem now. Weblogic is checking the cmp-fields at deployment time using something like "SELECT xx1, xx2, xxx3 FROM ttt1 WHERE 1 = 0". Some databases have no problem with such a select. My Solid database unfortunately does a full table scan on it. Having only some rows in the table b there is no problem at all, but I have more than 500.000 entries. :-(
My question: Is there a workaround? Can I somewhere specify the SQL - command for checking mapped cmp-fields? Or can I disable the check somehow?
I think it is a very annoying problem, many users out there have.
Thanx in advance
Robert

Robert Jung wrote:
Hi all,
like many others in the web I'm having problems deploying CMP Beans on BEA. I'm using Weblogic 8.1 and
get the following error message:
"[EJB:011076]Unable to deploy the EJB 'B' because the database table 'b' is not accessible.Please ensure that this table exists and is accessible."
>
After a lot of research I understand the problem now. Weblogic is checking the cmp-fieldsat deployment time using something like "SELECT xx1, xx2, xxx3 FROM ttt1 WHERE 1 = 0".
Some databases have no problem with such a select. My Solid database unfortunately does
a full table scan on it. Having only some rows in the table b there is no problem at all,
but I have more than 500.000 entries. :-(
>
My question: Is there a workaround? Can I somewhere specify the SQL - command for checkingmapped cmp-fields? Or can I disable the check somehow?
I think it is a very annoying problem, many users out there have.Hi. All commercial quality DBMSes I know, are smart enough to evaluate constant search
criteria, and not to access all the rows if it's a-priori known that no rows will
qualify. I would ask 'Solid' for a fix.
However, you can generate our EJBs with the option of retaining the generated
JDBC code, which you could alter and recompile for your use. You might be able to
substitute some DatabaseMetaData call to getTableColumns() to get the same info...
Joe
Thanx in advance
Robert

Reconciilation from database table

Hi I have to reconcile data from database table. I am using OIM 10g and Oracle 11g R2.
I have created one GTC for Database Tables. And able to run th scheduled task for it.
Table name: recondb
there is one record present in table.but i saw on OIM server log it says no records.
Not able to figure out what is the problem.
log:
DEBUG,07 Mar 2011 13:51:02,678,[OIMCP.DATC],Class/Method: DBReconTransportProvi
er/initialize entered.
DEBUG,07 Mar 2011 13:51:02,695,[OIMCP.DATC],Class/Method: DBReconTransportProvi
er/initialize - Data: driver - Value: oracle.jdbc.driver.OracleDriver
DEBUG,07 Mar 2011 13:51:02,696,[OIMCP.DATC],Class/Method: DBReconTransportProvi
er/initialize - Data: url - Value: jdbc:oracle:thin:@10.88.176.155:1521:TRAININ
DEBUG,07 Mar 2011 13:51:02,697,[OIMCP.DATC],Class/Method: DBReconTransportProvi
er/initialize - Data: username - Value: oimuserpc
DEBUG,07 Mar 2011 13:51:02,699,[OIMCP.DATC],Class/Method: DBReconTransportProvi
er/initialize - Data: password - Value: *******
DEBUG,07 Mar 2011 13:51:02,700,[OIMCP.DATC],Class/Method: DBReconTransportProvi
er/initialize - Data: customizedQueries - Value:
DEBUG,07 Mar 2011 13:51:02,702,[OIMCP.DATC],Class/Method: DBReconTransportProvi
er/initialize - Data: useNativeQuery - Value: false
DEBUG,07 Mar 2011 13:51:02,704,[OIMCP.DATC],Class/Method: DBReconTransportProvi
er/initialize - Data: parentContainerName - Value: recondb
DEBUG,07 Mar 2011 13:51:02,705,[OIMCP.DATC],Class/Method: DBReconTransportProvi
er/convertCSVToArraylist entered.
DEBUG,07 Mar 2011 13:51:02,707,[OIMCP.DATC],Class/Method: DBReconTransportProvi
er/convertCSVToArraylist: providerParams:
DEBUG,07 Mar 2011 13:51:02,709,[OIMCP.DATC],Class/Method: DBReconTransportProvi
er/convertCSVToArraylist left.
DEBUG,07 Mar 2011 13:51:02,712,[OIMCP.DATC],Class/Method: DBReconTransportProvi
er/initialize - Data: childContainerTableNames - Value: []
DEBUG,07 Mar 2011 13:51:02,713,[OIMCP.DATC],Class/Method: DBReconTransportProvi
er/initialize - Data: parentContainerUniqueKey - Value: userid
DEBUG,07 Mar 2011 13:51:02,715,[OIMCP.DATC],Class/Method: DBReconTransportProvi
er/initialize - Data: incrementalReconAttribute - Value:
DEBUG,07 Mar 2011 13:51:02,756,[OIMCP.DATC],Class/Method: DBReconTransportProvi
er/initialize - Data: dbDateFormat - Value: yyyy/MM/dd hh:mm:ss z
DEBUG,07 Mar 2011 13:51:02,756,[OIMCP.DATC],Class/Method: DBReconTransportProvi
er/initialize left.
DEBUG,07 Mar 2011 13:51:02,769,[OIMCP.DATC],Class/Method: DBFacade/getConnectio
Prop entered.
DEBUG,07 Mar 2011 13:51:02,837,[OIMCP.DATC],Class/Method: DBFacade/getClumns -
ata: Columns: - Value: [com.thortech.xl.gc.impl.common.Column@1a15f06, com.tho
tech.xl.gc.impl.common.Column@1658cfb, com.thortech.xl.gc.impl.common.Column@ad
5b, com.thortech.xl.gc.impl.common.Column@1c0c692, com.thortech.xl.gc.impl.comm
n.Column@12cc218, com.thortech.xl.gc.impl.common.Column@17ae572, com.thortech.x
.gc.impl.common.Column@16db297, com.thortech.xl.gc.impl.common.Column@e7ebba]
DEBUG,07 Mar 2011 13:51:02,849,[OIMCP.DATC],Class/Method: DBFacade/getPrimaryKe
s - Data: Primary Keys - Value: []
DEBUG,07 Mar 2011 13:51:02,850,[OIMCP.DATC],Class/Method: DBFacade/getSchema -
ata: Parent Unique Key: - Value: [USERID]
DEBUG,07 Mar 2011 13:51:02,851,[OIMCP.DATC],Class/Method: DBReconTransportProvi
er/getFirstPage - Data: Filter Query - Value:
DEBUG,07 Mar 2011 13:51:02,861,[OIMCP.DATC],Class/Method: DBFacade/getRecord -
ata: SQL - Value: select * from oimuserpc.recondb
DEBUG,07 Mar 2011 13:51:02,881,[OIMCP.DATC],Class/Method: DBFacade/getRecord -
ata: startpage - Value: -1
DEBUG,07 Mar 2011 13:51:02,882,[OIMCP.DATC],Class/Method: DBFacade/getRecord -
ata: endpage - Value: -1
DEBUG,07 Mar 2011 13:51:02,883,[OIMCP.DATC],Class/Method: DBFacade/getRecord -
ata: Number of records - Value: 0

I got Null Pointer Exception after User Password. I have checked mapping of Pasword field its correct.
Here is log:
DEBUG,08 Mar 2011 10:20:03,097,[OIMCP.DATC],Class/Method: DBReconTransportProvid
er/initialize entered.
DEBUG,08 Mar 2011 10:20:03,103,[OIMCP.DATC],Class/Method: DBReconTransportProvid
er/initialize - Data: driver - Value: oracle.jdbc.driver.OracleDriver
DEBUG,08 Mar 2011 10:20:03,103,[OIMCP.DATC],Class/Method: DBReconTransportProvid
er/initialize - Data: url - Value: jdbc:oracle:thin:@10.88.176.155:1521:TRAINING
DEBUG,08 Mar 2011 10:20:03,104,[OIMCP.DATC],Class/Method: DBReconTransportProvid
er/initialize - Data: username - Value: oimuserpc
DEBUG,08 Mar 2011 10:20:03,106,[OIMCP.DATC],Class/Method: DBReconTransportProvid
er/initialize - Data: password - Value: *******
DEBUG,08 Mar 2011 10:20:03,107,[OIMCP.DATC],Class/Method: DBReconTransportProvid
er/initialize - Data: customizedQueries - Value:
DEBUG,08 Mar 2011 10:20:03,109,[OIMCP.DATC],Class/Method: DBReconTransportProvid
er/initialize - Data: useNativeQuery - Value: false
DEBUG,08 Mar 2011 10:20:03,109,[OIMCP.DATC],Class/Method: DBReconTransportProvid
er/initialize - Data: parentContainerName - Value: recondb
DEBUG,08 Mar 2011 10:20:03,110,[OIMCP.DATC],Class/Method: DBReconTransportProvid
er/convertCSVToArraylist entered.
DEBUG,08 Mar 2011 10:20:03,111,[OIMCP.DATC],Class/Method: DBReconTransportProvid
er/convertCSVToArraylist: providerParams:
DEBUG,08 Mar 2011 10:20:03,112,[OIMCP.DATC],Class/Method: DBReconTransportProvid
er/convertCSVToArraylist left.
DEBUG,08 Mar 2011 10:20:03,114,[OIMCP.DATC],Class/Method: DBReconTransportProvid
er/initialize - Data: childContainerTableNames - Value: []
DEBUG,08 Mar 2011 10:20:03,115,[OIMCP.DATC],Class/Method: DBReconTransportProvid
er/initialize - Data: parentContainerUniqueKey - Value: userid
DEBUG,08 Mar 2011 10:20:03,116,[OIMCP.DATC],Class/Method: DBReconTransportProvid
er/initialize - Data: incrementalReconAttribute - Value:
DEBUG,08 Mar 2011 10:20:03,154,[OIMCP.DATC],Class/Method: DBReconTransportProvid
er/initialize - Data: dbDateFormat - Value: yyyy/MM/dd hh:mm:ss z
DEBUG,08 Mar 2011 10:20:03,154,[OIMCP.DATC],Class/Method: DBReconTransportProvid
er/initialize left.
DEBUG,08 Mar 2011 10:20:03,164,[OIMCP.DATC],Class/Method: DBFacade/getConnection
Prop entered.
DEBUG,08 Mar 2011 10:20:03,425,[OIMCP.DATC],Class/Method: DBFacade/getClumns - D
ata: Columns: - Value: [com.thortech.xl.gc.impl.common.Column@126232b, com.thor
tech.xl.gc.impl.common.Column@cef542, com.thortech.xl.gc.impl.common.Column@147e
045, com.thortech.xl.gc.impl.common.Column@1d4d4b8, com.thortech.xl.gc.impl.comm
on.Column@1d99597, com.thortech.xl.gc.impl.common.Column@1ebf294, com.thortech.x
l.gc.impl.common.Column@1831114, com.thortech.xl.gc.impl.common.Column@1d67244]
DEBUG,08 Mar 2011 10:20:03,460,[OIMCP.DATC],Class/Method: DBFacade/getPrimaryKey
s - Data: Primary Keys - Value: []
DEBUG,08 Mar 2011 10:20:03,461,[OIMCP.DATC],Class/Method: DBFacade/getSchema - D
ata: Parent Unique Key: - Value: [USERID]
DEBUG,08 Mar 2011 10:20:03,463,[OIMCP.DATC],Class/Method: DBReconTransportProvid
er/getFirstPage - Data: Filter Query - Value:
DEBUG,08 Mar 2011 10:20:03,473,[OIMCP.DATC],Class/Method: DBFacade/getRecord - D
ata: SQL - Value: select * from oimuserpc.recondb
DEBUG,08 Mar 2011 10:20:03,541,[OIMCP.DATC],Class/Method: DBFacade/getRecord - D
ata: startpage - Value: -1
DEBUG,08 Mar 2011 10:20:03,542,[OIMCP.DATC],Class/Method: DBFacade/getRecord - D
ata: endpage - Value: -1
DEBUG,08 Mar 2011 10:20:03,543,[OIMCP.DATC],Class/Method: DBFacade/getRecord - D
ata: Number of records - Value: 1
DEBUG,08 Mar 2011 10:20:03,721,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName entered.
DEBUG,08 Mar 2011 10:20:03,722,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName - Data: attr src - Value: User Profile Data
DEBUG,08 Mar 2011 10:20:03,723,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName - Data: display name - Value: Email
DEBUG,08 Mar 2011 10:20:03,724,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName left.
DEBUG,08 Mar 2011 10:20:03,730,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName entered.
DEBUG,08 Mar 2011 10:20:03,730,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName - Data: attr src - Value: User Profile Data
DEBUG,08 Mar 2011 10:20:03,732,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName - Data: display name - Value: First Name
DEBUG,08 Mar 2011 10:20:03,733,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName left.
DEBUG,08 Mar 2011 10:20:03,737,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName entered.
DEBUG,08 Mar 2011 10:20:03,738,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName - Data: attr src - Value: User Profile Data
DEBUG,08 Mar 2011 10:20:03,740,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName - Data: display name - Value: User Login
DEBUG,08 Mar 2011 10:20:03,741,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName left.
DEBUG,08 Mar 2011 10:20:03,745,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName entered.
DEBUG,08 Mar 2011 10:20:03,745,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName - Data: attr src - Value: User Profile Data
DEBUG,08 Mar 2011 10:20:03,746,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName - Data: display name - Value: Xellerate Type
DEBUG,08 Mar 2011 10:20:03,747,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName left.
DEBUG,08 Mar 2011 10:20:03,751,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName entered.
DEBUG,08 Mar 2011 10:20:03,751,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName - Data: attr src - Value: User Profile Data
DEBUG,08 Mar 2011 10:20:03,753,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName - Data: display name - Value: Role
DEBUG,08 Mar 2011 10:20:03,754,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName left.
DEBUG,08 Mar 2011 10:20:03,758,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName entered.
DEBUG,08 Mar 2011 10:20:03,759,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName - Data: attr src - Value: User Profile Data
DEBUG,08 Mar 2011 10:20:03,760,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName - Data: display name - Value: Organization Name
DEBUG,08 Mar 2011 10:20:03,761,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName left.
DEBUG,08 Mar 2011 10:20:03,765,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName entered.
DEBUG,08 Mar 2011 10:20:03,765,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName - Data: attr src - Value: User Profile Data
DEBUG,08 Mar 2011 10:20:03,766,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName - Data: display name - Value: User Password
DEBUG,08 Mar 2011 10:20:03,767,[XELLERATE.JAVACLIENT],Class/Method: tcAttributeS
ource/getAttrColumnName left.
ERROR,08 Mar 2011 10:20:03,770,[XELLERATE.APIS],Class/Method: tcReconciliationOp
erationsBean/ignoreEventData encounter some problems: {1}
java.lang.NullPointerException
at com.thortech.xl.dataobj.util.tcAttributeSource.getAttrColumnName(Unkn
own Source)
at com.thortech.xl.dataobj.util.tcReconciliationUtil.getRuleElementWhere
(Unknown Source)
at com.thortech.xl.dataobj.util.tcReconciliationUtil.getRuleWhere(Unknow
n Source)
at com.thortech.xl.dataobj.util.tcReconciliationUtil.getMatchedUserList(
Unknown Source)
at com.thortech.xl.dataobj.util.tcReconciliationUtil.getMatchedUserList(
Unknown Source)
at com.thortech.xl.dataobj.util.tcReconciliationUtil.ignoreEvent(Unknown
Source)
at com.thortech.xl.ejb.beansimpl.tcReconciliationOperationsBean.ignoreEv
entData(Unknown Source)
at com.thortech.xl.ejb.beansimpl.tcReconciliationOperationsBean.ignoreEv
ent(Unknown Source)
at com.thortech.xl.ejb.beans.tcReconciliationOperationsSession.ignoreEve
nt(Unknown Source)
at com.thortech.xl.ejb.beans.tcReconciliationOperations_gmh3ba_EOImpl.ig
noreEvent(tcReconciliationOperations_gmh3ba_EOImpl.java:546)
at Thor.API.Operations.tcReconciliationOperationsClient.ignoreEvent(Unkn
own Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at Thor.API.Base.SecurityInvocationHandler$1.run(Unknown Source)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Authenticate
dSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:
121)
at weblogic.security.Security.runAs(Security.java:41)
at Thor.API.Security.LoginHandler.weblogicLoginSession.runAs(Unknown Sou
rce)
at Thor.API.Base.SecurityInvocationHandler.invoke(Unknown Source)
at $Proxy69.ignoreEvent(Unknown Source)
at com.thortech.xl.gc.runtime.GCScheduleTask.execute(Unknown Source)
at com.thortech.xl.scheduler.tasks.SchedulerBaseTask.run(Unknown Source)
at com.thortech.xl.scheduler.core.quartz.QuartzWrapper$TaskExecutionActi
on.run(Unknown Source)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Authenticate
dSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:
121)
at weblogic.security.Security.runAs(Security.java:41)
at Thor.API.Security.LoginHandler.weblogicLoginSession.runAs(Unknown Sou
rce)
at com.thortech.xl.scheduler.core.quartz.QuartzWrapper.execute(Unknown S
ource)
at org.quartz.core.JobRunShell.run(JobRunShell.java:178)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.j
ava:477)
ERROR,08 Mar 2011 10:20:03,808,[XELLERATE.GC.FRAMEWORKRECONCILIATION],Reconcilia
tion Encountered error:
Thor.API.Exceptions.tcAPIException: java.lang.NullPointerException
at com.thortech.xl.ejb.beansimpl.tcReconciliationOperationsBean.ignoreEv
entData(Unknown Source)
at com.thortech.xl.ejb.beansimpl.tcReconciliationOperationsBean.ignoreEv
ent(Unknown Source)
at com.thortech.xl.ejb.beans.tcReconciliationOperationsSession.ignoreEve
nt(Unknown Source)
at com.thortech.xl.ejb.beans.tcReconciliationOperations_gmh3ba_EOImpl.ig
noreEvent(tcReconciliationOperations_gmh3ba_EOImpl.java:546)
at Thor.API.Operations.tcReconciliationOperationsClient.ignoreEvent(Unkn
own Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at Thor.API.Base.SecurityInvocationHandler$1.run(Unknown Source)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Authenticate
dSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:
121)
at weblogic.security.Security.runAs(Security.java:41)
at Thor.API.Security.LoginHandler.weblogicLoginSession.runAs(Unknown Sou
rce)
at Thor.API.Base.SecurityInvocationHandler.invoke(Unknown Source)
at $Proxy69.ignoreEvent(Unknown Source)
at com.thortech.xl.gc.runtime.GCScheduleTask.execute(Unknown Source)
at com.thortech.xl.scheduler.tasks.SchedulerBaseTask.run(Unknown Source)
at com.thortech.xl.scheduler.core.quartz.QuartzWrapper$TaskExecutionActi
on.run(Unknown Source)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Authenticate
dSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:
121)
at weblogic.security.Security.runAs(Security.java:41)
at Thor.API.Security.LoginHandler.weblogicLoginSession.runAs(Unknown Sou
rce)
at com.thortech.xl.scheduler.core.quartz.QuartzWrapper.execute(Unknown S
ource)
at org.quartz.core.JobRunShell.run(JobRunShell.java:178)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.j
ava:477)
WARN,08 Mar 2011 10:20:03,813,[XELLERATE.GC.FRAMEWORKRECONCILIATION],Though Rec
onciliation Scheduled task has encountered an error, Reconciliation Transport pr
oviders have been "ended" smoothly. Any provider operation that occurs during th
at "end" or "clean-up" phase would have been executed e.g. Data archival. In cas
e you want that data to be a part of next Reconciliation execution, restore it f
rom Staging. Provider logs must be containing details about storage entities tha
t would have been archived

Keeping Entity EJBs synchronized with Database

Is it possible that container managed persistance takes care of synchronizing entity beans' states with database record even if there is some external non-Java application that changes the state of the records straigth at database?
For example:
1. I map CMP entity bean to a database table's row and query it's state from J2EE client
2. I modify some data releted to that particular bean in the database: change some values by command line (SQL+ at the case of Oracle) on the row in the table in the database
3. I query again the same bean's state
Now, is the state I will get at the section 3 the same I got at section 1? If so, then CMP hasn't synchronized the bean's state and I get wrong value when reading it at second time.
Can I automatize this synchronization task some how? This is very important issue when trying to take J2EE architecture in use on old legacy database systems which still have their own non-J2EE clients running.

So if the entity bean is not used in a transaction it's state will not be re-read from the database, correct?There is no such thing.... if you invoke an entity bean in an unspecified transaction context I believe the spec defines it as a non-deterministic situation but in general the state will be re-read(but why would you want to do that?).
Has the container do a database query for each read of B bean state?This is a vendor specific issue.... it depends on your EJB container provider, I know some vendors have all kinds of configurations to optimize these situations.
Which are all the situations when an entity bean's state is (re-)read from the database?In general the state will be re-read at the first time a bean is invoked in a single transaction, but vendors offer a lot of mechanisms to configure all kinds of "sunchronization strategies".
Do you really mean that every time I read a bean's state it will be the same with the database?
Is there any exceptions? The important thing to notice is that we have to assume that state of the database
changes all the time by non-J2EE legacy clients. You should be able to control this with the locking mechanisms(as mentioned before) that your container and RDBMS provides. in your situation, it sounds like pessimistic concurrency control would be appropriate.

EJB mapping to database tables

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