Error in primary key generation

Hello,
I am using Postgresql database with jboss. I am using sequence block pattern for generating automatic primary key using source code provided by ejbdesignpattern book. but when i use transaction attribute of RequiresNew for method getValueAfterIncrementingBy I get following exception. excpetion disappear when transaction attribute is changed to Required but book recommends using RequiresNew attribute for the mehtod
can sombody tell y this exception is being raised and workaround.
15:57:23,507 WARN [TxCapsule] Transaction XidImpl [FormatId=257, GlobalId=c40//
1, BranchQual=] timed out. status=STATUS_ACTIVE
15:57:23,707 WARN [TxCapsule] Transaction XidImpl [FormatId=257, GlobalId=c40//
2, BranchQual=] timed out. status=STATUS_ACTIVE
15:57:23,707 WARN [BeanLock] wait() interrupted in txLock, possibly a timeout
15:57:23,707 ERROR [BeanLock] Thread[RMI TCP Connection(2)-192.168.0.46,5,RMI Ru
ntime]Saw rolled back tx=TransactionImpl:XidImpl [FormatId=257, GlobalId=c40//2,
BranchQual=] waiting for txLock
15:57:23,707 WARN [TxCapsule] Lock contention, tx=XidImpl [FormatId=257, Global
Id=c40//2, BranchQual=]
15:57:23,727 ERROR [LogInterceptor] RuntimeException:
java.lang.RuntimeException: Transaction marked for rollback, possibly a timeout
at org.jboss.ejb.plugins.lock.QueuedPessimisticEJBLock.waitForTx(QueuedP
essimisticEJBLock.java:339)
at org.jboss.ejb.plugins.lock.QueuedPessimisticEJBLock.doSchedule(Queued
PessimisticEJBLock.java:211)
at org.jboss.ejb.plugins.lock.QueuedPessimisticEJBLock.schedule(QueuedPe
ssimisticEJBLock.java:159)
at org.jboss.ejb.plugins.EntityLockInterceptor.invoke(EntityLockIntercep
tor.java:103)
at org.jboss.ejb.plugins.EntityCreationInterceptor.invoke(EntityCreation
Interceptor.java:69)
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInte
rceptor.java:107)
at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxIntercep
torCMT.java:291)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:9
8)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.
java:130)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:208)
at org.jboss.ejb.EntityContainer.invoke(EntityContainer.java:493)
at org.jboss.ejb.plugins.local.BaseLocalContainerInvoker.invoke(BaseLoca
lContainerInvoker.java:301)
at org.jboss.ejb.plugins.local.EntityProxy.invoke(EntityProxy.java:38)
at $Proxy34.getValueAfterIncrementingBy(Unknown Source)
at com.gmi.mportal.SequenceSessionBean.getNextSequenceNumber(SequenceSes
sionBean.java:62)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(S
tatelessSessionContainer.java:660)
at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invo
ke(CachedConnectionInterceptor.java:186)
at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(Stat
elessSessionInstanceInterceptor.java:77)
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInte
rceptor.java:107)
at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxIntercep
torCMT.java:237)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:9
8)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.
java:130)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:208)
at org.jboss.ejb.StatelessSessionContainer.invoke(StatelessSessionContai
ner.java:313)
at org.jboss.ejb.Container.invoke(Container.java:738)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:517)
at org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:
383)
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:324)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261)
at sun.rmi.transport.Transport$1.run(Transport.java:148)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:144)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:4
60)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport
.java:701)
at java.lang.Thread.run(Thread.java:536)
15:57:23,747 ERROR [LogInterceptor] EJBException, causedBy:
java.lang.RuntimeException: Transaction marked for rollback, possibly a timeout
at org.jboss.ejb.plugins.lock.QueuedPessimisticEJBLock.waitForTx(QueuedP
essimisticEJBLock.java:339)
at org.jboss.ejb.plugins.lock.QueuedPessimisticEJBLock.doSchedule(Queued
PessimisticEJBLock.java:211)
at org.jboss.ejb.plugins.lock.QueuedPessimisticEJBLock.schedule(QueuedPe
ssimisticEJBLock.java:159)
at org.jboss.ejb.plugins.EntityLockInterceptor.invoke(EntityLockIntercep
tor.java:103)
at org.jboss.ejb.plugins.EntityCreationInterceptor.invoke(EntityCreation
Interceptor.java:69)
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInte
rceptor.java:107)
at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxIntercep
torCMT.java:291)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:9
8)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.
java:130)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:208)
at org.jboss.ejb.EntityContainer.invoke(EntityContainer.java:493)
at org.jboss.ejb.plugins.local.BaseLocalContainerInvoker.invoke(BaseLoca
lContainerInvoker.java:301)
at org.jboss.ejb.plugins.local.EntityProxy.invoke(EntityProxy.java:38)
at $Proxy34.getValueAfterIncrementingBy(Unknown Source)
at com.gmi.mportal.SequenceSessionBean.getNextSequenceNumber(SequenceSes
sionBean.java:62)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)

I'm experiencing the exact same problem.
I do have a piece of information to add, though.
This problem only occurs when I run the code (generating a PK for a given table) the FIRST time. Once a row exists in the sequence table for a table, the code works.
On the first run, the problem occurs after the row is inserted into the table. If the row already exists, you're all set.
Still a problem, but at least you can work around it by prepopulating your sequence table.
--- Matt

Similar Messages

Primary key generation: Using CounterHome?

I can't find any documentation that talks about automatic primary key generation support on OC4J. I noticed the article on the Orion Support page that mentions their "Counter" bean. Is this the extent of support for automatic primary key generation in OC4J? When I searched for this class in the distribution, I only found it in a demo application in JDeveloper.
Is this something that is handled directly in the Oracle DB, which is why OC4J doesn't bother to support it?

Sorry I wasn't specific. By "going nowhere", I meant it went to an error page on the orion site. I don't know why it couldn't find it, because when I just now searched for the article with the title you just gave, the resulting URL was identical to what you gave me originally.
As to the "counter faq", I think I've seen that before, but I can't get to it right now (server overloaded or something). The one problem I remember with trying to pursue the "counter" solution was somewhat simple. I couldn't find the code. I didn't notice a download for the "Counter" class, and I can't find it in either the jdeveloper or oc4j distributions.
In any case, I ended up implementing the UUID solution, based on Floyd Marinescu's example in "EJB Design Patterns". I think this will work fine for our application.
I'd still like to know more about Orion's "Counter" solution, if there's any real code available to see.

Cluster DuplicateKeyExecption and primary key generation

Hi
I have 2 applications servers working in a cluster.
I'm using for primary key generation The pattern "sequence blocks" taken from the book ejb design patterns.
However when i have something like 5 threads that are trying to create new entities then i get DuplikateKeyException on the primary key. (with only 1 jboss server not in a cluster everything is fine).
I was wondering if anybody could help me pin out the problem, following is my code:
I estimated it might be an Isolation level problem, however i have updated the isolation level to be serializable in that way in mysql ds and the problem still happend...
Code:
<user-name>root</user-name>
<password></password>
<TransactionIsolation>TRANSACTION_SERIALIZABLE</TransactionIsolation>
Sequence entity bean
Code:
import javax.ejb.*;
abstract public class SequenceBean implements EntityBean {
EntityContext entityContext;
public java.lang.String ejbCreate(java.lang.String name) throws CreateException {
setName(name);
return null;
public void ejbPostCreate(java.lang.String name) throws CreateException {
setSIndex(ConfigContainer.getJMXPropertiesFacade().getSequenceSessionBeanStartIndex());
public void ejbRemove() throws RemoveException {
public abstract void setName(java.lang.String name);
public abstract void setSIndex(int sIndex);
public abstract java.lang.String getName();
public abstract int getSIndex();
public void ejbLoad() {
public void ejbStore() {
public void ejbActivate() {
public void ejbPassivate() {
public void unsetEntityContext() {
this.entityContext = null;
public void setEntityContext(EntityContext entityContext) {
this.entityContext = entityContext;
public int getValueAfterIncrementingBy(int blockSize) {
this.setSIndex(this.getSIndex()+ blockSize);
return this.getSIndex();
sequence session bean
Code:
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.ejb.CreateException;
import javax.ejb.FinderException;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;
import javax.naming.Context;
import javax.naming.NamingException;
import org.apache.log4j.Category;
public class SequenceSessionBean implements SessionBean {
SessionContext sessionContext;
private Category _log;
private class Entry {
Sequence sequence;
int last;
private java.util.HashMap _entries = new java.util.HashMap();
private int _blockSize;
private int _retryCount;
private SequenceHome _sequenceHome;
public void ejbCreate() throws CreateException {
_log = Category.getInstance(getClass());
public void ejbRemove() {
public void ejbActivate() {
public void ejbPassivate() {
public void setSessionContext(SessionContext sessionContext) {
this.sessionContext = sessionContext;
Context namingContext = null;
try {
namingContext = new javax.naming.InitialContext();
_blockSize = JMXPropertiesFacade.getInstance().getSequenceSessionBeanBlockSize();
_retryCount = JMXPropertiesFacade.getInstance().getSequenceSessionBeanRetryCount();
_sequenceHome = (SequenceHome) namingContext.lookup("SequenceLocalHome");
catch (NamingException e) {
_log.error(e.getMessage(), e);
public void synch() throws InternalException {
Connection connection = null;
ResultSet resultSet = null;
Statement statement = null;
int maxObjectID = 0, maxUID = 0, maxShareID = 0;
try {
connection = MASConnectionManager.getInstance().createConnection();
String sql = "select max(" + AlbumElementHome.FIELD_NAME_OBJECT_ID + ") maxObjectID from " + AlbumElementHome.TABLE_NAME;
statement = connection.createStatement();
_log.debug("SQL : " + sql);
statement.execute(sql);
resultSet = statement.getResultSet();
if (resultSet.next()) {
maxObjectID = resultSet.getInt("maxObjectID");
_log.debug(String.valueOf(maxObjectID));
resultSet.close();
statement.close();
((Sequence) sequenceHome.findByPrimaryKey(AlbumElementHome.JNDINAME)).setSIndex(maxObjectID
+ 1);
sql = "select max(" + UserHome.FIELD_UID + ") maxUID from " + UserHome.TABLE_NAME;
statement = connection.createStatement();
_log.debug("SQL : " + sql);
statement.execute(sql);
resultSet = statement.getResultSet();
if (resultSet.next()) {
maxUID = resultSet.getInt("maxUID");
_log.debug(String.valueOf(maxUID));
resultSet.close();
statement.close();
((Sequence) sequenceHome.findByPrimaryKey(UserHome.JNDINAME)).setSIndex(maxUID + 1);
sql = "select max(" + AlbumElementShareHome.FIELD_SHARE_ID + ") maxShareID from " + AlbumElementShareHome.TABLE_NAME;
statement = connection.createStatement();
_log.debug("SQL : " + sql);
statement.execute(sql);
resultSet = statement.getResultSet();
if (resultSet.next()) {
maxShareID = resultSet.getInt("maxShareID");
_log.debug(String.valueOf(maxShareID));
resultSet.close();
statement.close();
((Sequence) sequenceHome.findByPrimaryKey(AlbumElementShareHome.JNDINAME)).setSIndex(maxShar
eID + 1);
} catch (SQLException e1) {
_log.error(e1.getMessage(), e1);
} catch (FinderException e) {
throw new InternalException(e);
} finally {
     try {
     if (connection != null && !connection.isClosed()) connection.close();
     } catch (SQLException e) {
     _log.error(e.getMessage(), e);
public int getNextSequenceNumber(String name) {
try
Entry entry = (Entry) _entries.get(name);
if (entry == null)
// add an entry to the sequence table
entry = new Entry();
try
entry.sequence = _sequenceHome.findByPrimaryKey(name);
catch (javax.ejb.FinderException e)
_log.info("can't find sequence: " + name + " trying to create it");
// if we couldn't find it, then create it...
entry.sequence = _sequenceHome.create(name);
_log.info("sequence: " + name + " created");
_entries.put(name, entry);
if (entry.last % _blockSize == 0)
for (int retry = 0; true; retry++)
try
entry.last = entry.sequence.getValueAfterIncrementingBy(_blockSize);
break;
catch (javax.ejb.TransactionRolledbackLocalException e)
if (retry < _retryCount)
// we hit a concurrency exception, so try again...
_log.info("RETRYING");
continue;
else
// we tried too many times, so fail...
throw new javax.ejb.EJBException(e);
return entry.last++;
catch (javax.ejb.CreateException e)
throw new javax.ejb.EJBException(e);
from ejb-jar.xml
Code:
<container-transaction>
<method>
<description />
<ejb-name>SequenceSession</ejb-name>
<method-name>getNextSequenceNumber</method-name>
<method-params>
<method-param>java.lang.String</method-param>
</method-params>
</method>
<trans-attribute>RequiresNew</trans-attribute>
</container-transaction>
jboss.xml
Code:
<container-configurations>
<container-configuration>
<container-name>Standard CMP 2.x EntityBean with cache invalidation</container-name>
          <commit-option>A</commit-option>
          <cache-invalidation>True</cache-invalidation>
</container-configuration>
</container-configurations>
<entity>
<ejb-name>Sequence</ejb-name>
<local-jndi-name>SequenceLocalHome</local-jndi-name>

</entity>
anybody can help with what the problem might be?
did i update the isolation level correctly?

_blocksize may be returning 0

Primary key generation

How do use primary keys generated by database within entity bean?

DBMS primary key generation uses a set of deployment descriptors that
are specified at compile time to generate container code which is used
in conjunction with a supported database to provide key generation
support. Specify the name of the supported DBMS and the generator name,
if required by the database. Generated primary key support for Oracle
databases use Oracle's SEQUENCE. Once the SEQUENCE already exists in the
database, you specify automatic key generation in the XML deployment
descriptors. In the weblogic-cmp-rdbms-jar.xml file
<automatic-key-generation>
<generator-type>ORACLE</generator-type>
<generator_name>test_sequence</generator-name>
<key-cache-size>10</key-cache-size>
</automatic-key-generator>
You need to specify the name of the ORACLE SEQUENCE to be used in the
generator-name element. If the ORACLE SEQUENCE was created with an
INCREMENT value, then you must specify a key-cache-size. This value must
match the Oracle SEQUENCE INCREMENT value.
Owen wrote:
How do use primary keys generated by database within entity bean?

ADF BC Primary key generation with SQL Server DB

Hi,
I am using ADF 11.1.1.6 to develop a small application that will do some very basic CRUD operations on a SQL Server DB.
I read through http://www.oracle.com/technetwork/developer-tools/jdev/multidatabaseapp-085183.html before I'm starting to implement the Entity objects.
This document describes a way to do primary key generation using a table created in the DB and instructs to create an application connection to the Database :
+2. Create a Connection to the Table+
In your application, create a database connection named ROWIDAM_DB that points to the database containing your S_ROW_ID table. Alternatively, edit your BC project's properties and add the following Java option to the project's run configuration:
-Djbo.rowid_am_conn_name= appconnection
where appconnection is the name of a database connection that points to the S_ROW_ID table.
My question is how do we do this when we mve to a production environment ?
Also I'll be interested to hear if anyone has any pointers for developing ADF apps with SQL Server. (gotchas, performance pitfalls etc. )
-Jeevan
Upadte : This is SQL Server 2005
Edited by: Jeevan Joseph on May 2, 2012 9:04 AM

my apologies to everyone ... This should have been very simple. I just need to provide the config in my AM configuration(bc4j.xml)
jbo.rowid_am_conn_name* should be set to the connection name you create. For production deployments, theres a similar
jbo.rowid_am_datasource_name* that should work just fine (though I havent tried if it has any hiccups).
I'd like to point out one thing though, for whoever might stumble upon this thread and find it useful later on...
After I did the steps above, everything seemed to work when I tested the app from the AM tester. But when I built a UI for it in ADF Faces, I started getting an exception on Create/CreateInsert :
java.lang.ClassCastException: com.microsoft.sqlserver.jdbc.SQLServerConnection cannot be cast to oracle.jdbc.OracleConnection
     at oracle.jbo.server.OracleSQLBuilderImpl.setSessionTimeZone(OracleSQLBuilderImpl.java:5533)
     at oracle.jbo.server.DBTransactionImpl.refreshConnectionMetadata(DBTransactionImpl.java:5311)
     at oracle.jbo.server.DBTransactionImpl.initTransaction(DBTransactionImpl.java:1194)
     at oracle.jbo.server.DBTransactionImpl.initTxn(DBTransactionImpl.java:6826)
     at oracle.jbo.server.DBTransactionImpl2.connect(DBTransactionImpl2.java:136)
     at oracle.jbo.common.ampool.DefaultConnectionStrategy.connect(DefaultConnectionStrategy.java:213)The trouble is that the ADF Faces adf-config.xml overrides the AM configuration. Oracle is the default, and it overrides the SQL flavor I set when initializing the Model project.
This was not mentioned in the original document probably because ADF faces was out of scope for that document.
I also found this thread extremely useful, and its what reminded me of the ADF Faces AM config overrides : Re: Locking mode 'optupdate' with SQL92
Cheers !
Jeevan

Automatic primary key generation for pointbase

Hello friends,
I was wondering whether it is possible to automatically generate primary keys for a pointbase database. Just like the SQL Server pointbase also has a indentity property. I have used weblogic builder to specify automatic key generation. Through the pointbase console I can see that all the columns for all the tables are marked as nullable except the primary key columns. However when I try to insert data into the database using ejb. I get the exception :
javax.ejb.EJBException: EJB Exception:: java.sql.SQLException: Data exception -- null value not allowed. .
     at com.pointbase.net.netJDBCPrimitives.handleResponse(Unknown Source)
     at com.pointbase.net.netJDBCPrimitives.handlePrimitiveResponse(Unknown Source)
     at com.pointbase.net.netJDBCPreparedStatement.executeUpdate(Unknown Source)
     at weblogic.jdbc.wrapper.PreparedStatement.executeUpdate(PreparedStatement.java:94)
     at yellowpages.ejb.DirectoryItem.DirectoryItem_lh4yf1__WebLogic_CMP_RDBMS.__WL_create(DirectoryItem_lh4yf1__WebLogic_CMP_RDBMS.java:3177)
     at yellowpages.ejb.DirectoryItem.DirectoryItem_lh4yf1__WebLogic_CMP_RDBMS.ejbPostCreate(DirectoryItem_lh4yf1__WebLogic_CMP_RDBMS.java:3094)
     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)
     at weblogic.ejb20.manager.DBManager.create(DBManager.java:1151)
     at weblogic.ejb20.manager.DBManager.localCreate(DBManager.java:1100)
     at weblogic.ejb20.internal.EntityEJBLocalHome.create(EntityEJBLocalHome.java:171)
     at yellowpages.ejb.DirectoryItem.DirectoryItem_lh4yf1_LocalHomeImpl.create(DirectoryItem_lh4yf1_LocalHomeImpl.java:94)
     at yellowpages.web.controller.AddEntryAction.execute(Unknown Source)
     at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
     at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:971)
     at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:402)
     at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:305)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6350)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:317)
     at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118)
     at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3635)
     at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2585)
     at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
     at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
; nested exception is: java.sql.SQLException: Data exception -- null value not allowed. .
java.sql.SQLException: Data exception -- null value not allowed. .
     at com.pointbase.net.netJDBCPrimitives.handleResponse(Unknown Source)
     at com.pointbase.net.netJDBCPrimitives.handlePrimitiveResponse(Unknown Source)
     at com.pointbase.net.netJDBCPreparedStatement.executeUpdate(Unknown Source)
     at weblogic.jdbc.wrapper.PreparedStatement.executeUpdate(PreparedStatement.java:94)
     at yellowpages.ejb.DirectoryItem.DirectoryItem_lh4yf1__WebLogic_CMP_RDBMS.__WL_create(DirectoryItem_lh4yf1__WebLogic_CMP_RDBMS.java:3177)
     at yellowpages.ejb.DirectoryItem.DirectoryItem_lh4yf1__WebLogic_CMP_RDBMS.ejbPostCreate(DirectoryItem_lh4yf1__WebLogic_CMP_RDBMS.java:3094)
     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)
     at weblogic.ejb20.manager.DBManager.create(DBManager.java:1151)
     at weblogic.ejb20.manager.DBManager.localCreate(DBManager.java:1100)
     at weblogic.ejb20.internal.EntityEJBLocalHome.create(EntityEJBLocalHome.java:171)
     at yellowpages.ejb.DirectoryItem.DirectoryItem_lh4yf1_LocalHomeImpl.create(DirectoryItem_lh4yf1_LocalHomeImpl.java:94)
     at yellowpages.web.controller.AddEntryAction.execute(Unknown Source)
     at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
     at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:971)
     at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:402)
     at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:305)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6350)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:317)
     at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118)
     at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3635)
     at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2585)
     at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
     at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)

I am not sure whether I understand your question.
The 'NamedSequenceTable' method is independent of data base type.
<from-docs>
Create a table named SEQUENCE to hold the current primary key value. The
table consists of a single row with a single column, as defined by the
following statement:
CREATE table_name (SEQUENCE int)
INSERT into table_name VALUES (0)
</from-docs>
Then, you can add the following in the DD -
<automatic-key-generation>
<generator-type>NamedSequenceTable</generator-type>
<generator_name>table_name</generator-name>
<key-cache-size>100</key-cache-size>
</automatic-key-generation>
The PK type should be set to java.lang.Integer or java.lang.Long
--Sathish
<Panduranga Swamy> wrote in message news:[email protected]..
Hi,
With named sequecne table,I am able to develop the application. What I
wanted is Say Table 1 having Identity column as Primary key in the table
Pointbase database.
With Automatic primary key generation in Deployment descriptor, We
generally specify SQL_SERVER or Named Sequencetable for Primary key
generation.
For pointbase database, I dont know how to configure this?
Could you help me in this regard,
Thanks,
Pandu

Help Primary Key generation

According to article "Generating Primary Key Values in CMP Beans" (http://www.netbeans.org/kb/41/generated-primary-keys.html) you can specifiy automatic primary key generation.
The following fragment describes a key issue when you have a existing database schema.
If the database schema is not created during deployment, the primary key column in the mapped table must be of type NUMERIC with a precision of 19 or more, and must not be mapped to any CMP field. The Sun Java System Application Server generates unique values for the primary key column at runtime.
In the used sample for how to set up a MySql database the creation of the customer table must be as follows:
CREATE TABLE customer (
id BIGINT(19) NOT NULL auto_increment, -- this column will be automat. generated
lastName varchar(25) NOT NULL,
firstName varchar(30) default NULL,
PRIMARY KEY (id));
My question is:
Is it nescesary to have the field id to be decleared auto incremented?
The first fragment says that the AS will create new values for the primary key. Or does the generation of primary keys only work if the pk field in the database table is auto incremented by the database?
Please help. Thanks!
Johan.

Hello Johan,
no, as i remember it does not work if you specify the id column as auto_increment. The J2EE bean container does manage the generation of the primary key, so the database must have a column type int(19) or bigint and primary key, not more.
Hope this helps, more information is in the J2EE documentation from Sun, page 1012.
Kind regards,
marc.

Marinescu Primary Key Generation

Hi
i'm using Marinescus Primary Key Generation schema, but i'm having a problem
As i see it in EJB Design Patterns (Marinescus Book), he uses a Hashtable to store the values so that the Bean doesn't have to access the database everytime
My problem is that this Hashtable is not working, because each client when access the Bean, this creates a new bean (just like in the pattern) and thus there is never info on the Hashtable, thus the application has to go to the Database.
If i put the Hashtable as static, i will have Concurrency Problems
But my real problem is that i've seen various implementations of this pattern, and no one seems to talk about this problem
Am i missing something ?
I've thought maybe Marinescus uses only one static SessionBean (resolving the problem), but he create one Bean for each request also
Thanks

So, i found the problem
I had the SessionBean configured as a Stateful Session Bean
But if i change it to Stateless it starts working
I still didn't figured out why (as no Load, Store, Passivation or Activation code exists to keep or get the Hashtable)
So if any one could explain it to me, it would be nice :)
Thanks

Task-flow for inserting a record in a popup: error on primary key.

Hi all,
I am using Jdeveloper 11.1.1.2.
I am trying to display a bounded task flow in a popup launched from a page. I am following the steps in: http://www.oracle.com/technology/products/jdev/tips/fnimphius/popupinuishell/declarative_popup_in_uishell.html
I have a view object (myVO) and I have a page (page1), where I can edit the records of myVO. In this page I have a button that launches (in a window) a task-flow (insertTF, that uses existing transaction if possible, composed by page2 and page3) where I can insert a new record in two step (using a train).
At the end of the train I can save or cancel (task flow return activity) the inserting record.
The button cancel work well, but the button save does not. When I click on it, I return in page1 but I have this error: Error: another user modified row with primary key oracle.jbo.Key [[+numberOfKey+]].
If I see the database navigator or I refresh the page, I can see the record just inserted.
How can I do to remove this error?
Thank you
Andrea
Edited by: Andrea9 on 10-dic-2009 06:39

There are default values coming from the DB. There are also default values that I have setted in myModel on myEO.
I am the only user manages the database, there are no other users.
So, how can I solve this problem? Have I to remove the default value on inserting? From DB or from myEO?
thanks in advance
Andrea

SQLLDR error 418 - primary key REF

Has anyone successfully used primary key REF's in SQL*Loader?
I'm trying to load only the data from a file where it matches a user ID in another table.
Even running the example from the Oracle documentation gives me the same error.
Documentation: http://download-west.oracle.com/otndoc/oracle9i/901_doc/server.901/a90192/ch10.htm#1008188
Error: "SQL*Loader-418: Bad datafile datatype for column CUST"
I've guessed the structure of the CUSTOMERS and ORDERS tables, as they're not mentioned anywhere that I can see, certainly not in the "Tables Used in the Case Studies" section:
http://download-west.oracle.com/otndoc/oracle9i/901_doc/server.901/a90192/ch10.htm#1006666
Any ideas?
Dan

Hi
The problem is that the PK is based on a UDT.
If you really want to have such a primary key (on my opinion surrogate PK should always be used) you have to specify something like:
CREATE TABLE Aircraft_tab OF Aircraft_obj (
PRIMARY KEY(flightID.airline, flightID.num),
FOREIGN KEY(aircomname) REFERENCES Aircom_tab)
OBJECT ID PRIMARY KEY;
Chris

UML to DB Diagram Transformation: Error with primary key in MySQL

Hi,
I am new in JDeveloper and I am following an Oracle tutorial to transform an UML class Diagram into a DB diagram http://docs.oracle.com/cd/E18941_01/tutorials/jdtut_11r2_81/jdtut_11r2_81_2.html.
My idea is to create a real DB form this DB diagram.
I am now trying to transform a simple UML class into a DB class. I want to use a MYSql transformation and I want to define my self primary key, so I done the following steps:
- Create a UML class diagram
- Create a class "Person" with an attribute "ID:String"
- Define a Database profile
- Define a stereotype in my primary key attribute where:
+ I have checked box "Is Primary Key?"
+ I set in property "Data Type MySql Database Server) to "Varchar(20) NOT NULL"
Now when I try to do the transfromation:
- I set option "UML to Offline Database Objects"
- I create a new Offline DB which emulates a "MySQL Dataserver 5.x"
- When I click "Finish" I become a popup error which says: "*Invalid name PERSON_PK. Must use `PRIMARY`for MYSQL Primary Key*"
I don't really now how to solve this problem...I have tried all I have read and google but nothing works...I think I am forgotting something basic but I do not know what!
I am working with JDeveloper 11.1.2.1.0 and with MySql Server 5.5.
Thanks in advance!

Result of that table issue fix is that migration went ahead, finished both uptime and downtime run. Now i am trying to login to SAP and system is unable to log me in as DOKTL doesnt exist at all
But i see another table called DTELDOKTL in HANA, which same as DOKTL but no entries in it.
I have created a message to SAP , But what should i be doing now ?
Can i create this table in HANA ?
Can i do export/import of table ? Table structure should be there in system already for this option i guess.
Would i be able to replicate this table if i setup SLT ?
Please advise
C Mon Sep 8 11:02:30 2014
C *** ERROR =>   prepare() of C_0341, rc=1, rcSQL=259
[dbsdbsql.cpp 1397]
C {root-id=00505680721D1EE48DE09241702FF193}_{conn-id=00000000000000000000000000000000}_0
C *** ERROR => PREPARE C_0341 on connection 0, rc=259
[dbslsdb.cpp 9138]
C SQLCODE    : 259
C SQLERRTEXT : invalid table name: Could not find table/view DOKTL in schema SAPECS: line 1 col 97 (at pos 96)
C sc_p=7f28f48cfac8,no=341,idc_p=7f28f3f87388,con=0,act=0,slen=254,smax=256,#vars=5,stmt=7a45980,table=DOKTL
C stmtid = <0/SAPMSYST                                /50334994/20140907170329>
C SELECT "ID" , "OBJECT" , "LANGU" , "TYP" , "DOKVERSION" , "LINE" , "DOKFORMAT" , "DOKTEXT" FROM "DOK\
C TL" WHERE "LANGU" = ? AND "ID" = ? AND "OBJECT" = ? AND "TYP" = ? AND "DOKVERSION" = ? ORDER BY "ID"\
C   , "OBJECT" , "LANGU" , "TYP" , "DOKVERSION" , "LINE" ;
B ***LOG BZA=> table DOKTL does not exist on database R/3 [dbdbslst     3580]
M ThPerformDeleteThisSession: switch of statistics
D GuiStatus clear generate inline ts >20140908030105,195<
M ***LOG R47=> ThResFreeSession, delete () [thxxmode.c   1078]
M *** WARNING => ThrtGuiDeleteScreen: rscpGetUserLoginLang failed (128), use system language [thrtGuiHandl 469]
Thanks,
GR

Database Deferred Primary Key generation

Does anyone know how to configure 9iAS J2EE/OC4J to defer the creation of the Primary to the Database? For example, I have a table that is mapped to a CMP bean and the primary key is generated by a trigger in the database. I want the bean to use this database generated value but I can't figure out how to make it happen. I have tried setting the <prim-key-class> to java.lang.Object but that doesn't appear to be enough to get 9iAS to figure out that the primary key field is to come from the database.
Regards,
Nigel

you should set in your entity object the attribute as DBSequence and then create a before insert trigger in the db table to get the pk from a sequence or so, something like:
CREATE OR REPLACE TRIGGER trigger_name
BEFORE INSERT
ON table_name
FOR EACH ROW
begin
select seq_name.nextval into :new.pk_id from dual;
end;

CMP with Primary key generation in Oracle

I need to know how can I from my Entity Beans use Oracle sequences to automatically create my primary key.
I know that Weblogic lets to define with sequence to use in the deployment descriptor, but the problem is that I am using Websphere Application Server.
Does anyone have any suggestion doing this.
Very Thanks!!

See if this link helps - http://theserverside.com/patterns/thread.jsp?thread_id=220

A challenging primary key generation problem..

Hi !
I have the following problem (this is in theory, not (yet) in practice):
I have this set of entities with its respective primary keys in the database.. 0,1,2,3,4,5,...............,N
In a certain moment in the future X, a transaction deletes record (for example) n < N.
In a certain moment in the future Y after X, a transaction persists new entity Q.
What primary key does it get ?
Is it Q=n or is it Q=N+1 ?
In case the latter, how can I achieve the former ? Is there JPA specified way to do it, or I shall use the "stupid" way.
I.e. In general I want the gaps in the sequence (caused by deletion of entities), to be filled with the newly persisted ones.
All suggestions are welcome :)
P.S. If someone knows the actual difference between the PrimaryKeyGenerationTypes in JPA (SEQUENTIAL, IDENTITY, etc...) please, tell me :P
Edited by: javaUserMuser on Aug 7, 2008 5:37 PM

javaUserMuser wrote:
Well 2^63 = 9 billion billion.. well, thats a lot really. but anyway using the gaps is preferable for me ;]You've still said nothing to support this view except "because I said so". I don't think you need it. Here's why:
Assume there are 2^63 = 9 billion billion keys available to you. If your application consumes them at the rate of 1 key per millisecond, it'll take you ~36 billion years to exhaust all those keys. Since science estimates the age of the universe as 13-14 billion years, and creationists say it's 6000 years, I'd say you're safe if you throw away a key or two.
You know your app. Adjust accordingly. Calculate how fast you'd have to consume keys to exhaust them all in 100 years for fun and compare it to your real requirements.
Well there can be involved more than one db... In general how does a rdbms scale horizontally ? Can N-count physical nodes serve one logical DB ?Depends on the product. Consult the database you're using. Which product will you use?
What kind of them ?See the calculation above.
>
I got what those IDENTITY etc. things mean, but.... anyway how do those differ not in the perspective of the database, rather of that of the developer <-- that is my question :PAs a developer, it means that I'd have to use a different id generator scheme in my configuration.
In general, I like your posts :) Discussion is the mother of progressThank you, I'm glad you find them to be helpful.
%

Primary key generation by insert trigger.

I have a table and wish to automatically create a unique sequence number for use as the primary key.
In PL/SQL I do something like this:
create sequence personnel_seq;
create or replace trigger personnel_insert
before insert on personnel
for each row
declare seqNo NUMBER;
begin
select personnel_seq.NextVal into seqNo from dual;
:new.vc_personnel_reference := seqNo;
end personnel_insert;
column personnel.vc_personnel_reference is the primary key of table personnel, and not null.
What's the recommended way to do something similar in BC4J?
At present I'm using the trigger but BC4J doesn't know it exists, and insists on a value for vc_personnel_reference being provided. It also insists on adding the primary key to the ViewObject's attributes.
I can provide a dummy value in ViewObjectRowImpl.insertRow() but this seems cumbersome.
Is there a better way?
In fact can I do this kind of thing entirely in BC4J without the trigger?
Tony.

But be carefull with DBSequences.
There's a "problem" because the DBSequencs is a Domain and a "domained" field is not equal to any other field.
In that case if have an Entity with Id = 1 (where d comes out from a DbSequence) and You look for Id = n where n is a Number containing 1, You will not find Your record !!!
As 9.0.2.; I don't know in 9.0.3.
Bye
Tullio

Error in primary key generation

Similar Messages

Maybe you are looking for