Unable to generated a document ID error

Question

We are testing berkeley Dbxml 2.5.13 in Windows xp/Sp2.
We want to design an application that can connect to DB placed in server and modify it by multiple users.
Application open a dbxml database once and keep it until the App closed. Then free resources.
I use following configuration:
EnvironmentConfig:*
pEnvironmentConfig.setLogDirectory(FileLogPath);
pEnvironmentConfig.addDataDir(FileContainerPath);
pEnvironmentConfig.setAllowCreate(true);
pEnvironmentConfig.setInitializeCache(true);
pEnvironmentConfig.setInitializeLogging(true);
pEnvironmentConfig.setTransactional(true);
pEnvironmentConfig.setInitializeLocking(true);
pEnvironmentConfig.setCacheSize(20*1024);
pEnvironmentConfig.setRunRecovery(true);
pEnvironmentConfig.setThreaded(true);
pEnvironmentConfig.setRegister(true);
pEnvironmentConfig.setMutexTestAndSetSpins(50);
pEnvironmentConfig.setMaxLockers(10000);
pEnvironmentConfig.setMaxLockObjects(10000);
pEnvironmentConfig.setMaxLocks(10000);
pEnvironmentConfig.setJoinEnvironment(true);
And for Xmlmanager:*
pXmlManagerConfig.setAdoptEnvironment(true);
pXmlManagerConfig.setAllowExternalAccess(true);
And for XmlContainerConfig:*
pXmlContainerConfig.setTransactional(true);
pXmlContainerConfig.setCreateDir(FileContainerPath);
I place Environment Home Directory in a Directory in Server and for all users give full access to it.
User "A" can open as much as process that he want and connect to db via each process in his own Computer an add/remove data from each process from data base easily.
When a User "B" connect to DB and open another instance of application from his own computer he once he can add data to DB anad User "A" can see those modification immediately. Then user "A" add data and user "B" can see. In the third time when user "B" wants to add data following error arise):
Error in AddDocument:com.sleepycat.db.DatabaseException:Unable to generated a document ID, errorcode=INVALID_VALUE
It is worth mentioning that when I set pEnvironmentConfig.setCacheSize(20*1024*1024);
This error doesn’t appear but users couldn't see other user's modification.

Answer 1

I do not use Snapshot isolation. please take a look at my code(for readability i omit Try/Catch).
using System;
using System.Windows.Forms;
using com.sleepycat.db;
using com.sleepycat.dbxml;
using java.io;
class DBConnection
string _strEnvironmentPath = @"M:\DB";
string _strContainerPath = @"M:\DB";
string _strLogPath = @"M:\DB";
public string _strContainerName = @"DB.dbxml";
string _strContainerAlias = "alias.dbxml";
XmlManager _XmlManager = null;
XmlContainer _XmlContainer = null;
public DBConnection()
InitializeDb();
private void InitializeDb()
XmlManagerConfig pXmlManagerConfig = new XmlManagerConfig();
pXmlManagerConfig.setAdoptEnvironment(true);
XmlManager = new XmlManager(EnvironmentSettings(strEnvironmentPath), pXmlManagerConfig);
XmlContainerConfig pXmlContainerConfig = new XmlContainerConfig();
pXmlContainerConfig.setTransactional(true);
File FileContainerPath = new File(_strContainerPath);
pXmlContainerConfig.setCreateDir(FileContainerPath);
XmlContainer = XmlManager.openContainer(_strContainerName, pXmlContainerConfig);
XmlContainer.addAlias(strContainerAlias);
private com.sleepycat.db.Environment EnvironmentSettings(string strEnvPath)
File FileEnvironmentHome = null;
if (_strEnvironmentPath != null)
FileEnvironmentHome = new File(strEnvPath);
File FileLogPath = new File(_strLogPath);
File FileContainerPath = new File(_strContainerPath);
EnvironmentConfig pEnvironmentConfig = new EnvironmentConfig();
pEnvironmentConfig.setLogDirectory(FileLogPath);
pEnvironmentConfig.addDataDir(FileContainerPath);
pEnvironmentConfig.setAllowCreate(true);
pEnvironmentConfig.setInitializeCache(true);
pEnvironmentConfig.setInitializeLogging(true);
pEnvironmentConfig.setTransactional(true);
pEnvironmentConfig.setInitializeLocking(true);
pEnvironmentConfig.setCacheSize(20 * 1024 * 1024);
pEnvironmentConfig.setRunRecovery(true);
pEnvironmentConfig.setThreaded(true);
pEnvironmentConfig.setRegister(true);
com.sleepycat.db.Environment pEnvironment = new com.sleepycat.db.Environment(FileEnvironmentHome, pEnvironmentConfig);
return pEnvironment;
public XmlValue GetDocument(string DocumentID)
string strQueryString = @"doc('dbxml:/" + _strContainerName + "/" + DocumentID + "')";
return XmlManager.query(strQueryString, XmlManager.createQueryContext()).next();
public bool AddDocument(string XMLContent, string strDocumentID)
XmlTransaction pXmlTransaction = _XmlManager.createTransaction();
XmlDocument pXmlDocument = _XmlManager.createDocument();
pXmlDocument.setName(strDocumentID);
pXmlDocument.setContent(XMLContent);
_XmlContainer.putDocument(pXmlTransaction, pXmlDocument);
pXmlTransaction.commit(); pXmlTransaction = null;
return true;
}