[Solved] if(Transaction specified for a non-transactional database) then

Question

I am getting started with BDBXML 2.4.14 transactions and XQuery update functionality and I am having some difficulty with 'node insert ...' and transactions failing with 'Transaction specified for a non-transactional database'
Thanks for helping out.
Setup:
I have coded up a singleton manager for the XmlManger with a ThreadLocal holding the transaction and a query method to execute XQueries. The setup goes like this:
environmentConfig = new EnvironmentConfig();
environmentConfig.setRunRecovery(true);               environmentConfig.setTransactional(true);               environmentConfig.setAllowCreate(true);               environmentConfig.setRunRecovery(true);               environmentConfig.setInitializeCache(true);                environmentConfig.setTxnMaxActive(0);               environmentConfig.setInitializeLocking(true);               environmentConfig.setInitializeLogging(true);               environmentConfig.setErrorStream(System.err);
environmentConfig.setLockDetectMode(LockDetectMode.MINWRITE);               environmentConfig.setJoinEnvironment(true);               environmentConfig.setThreaded(true);
xmlManagerConfig = new XmlManagerConfig();               xmlManagerConfig.setAdoptEnvironment(true);               xmlManagerConfig.setAllowAutoOpen(true);               xmlManagerConfig.setAllowExternalAccess(true);
xmlContainerConfig = new XmlContainerConfig();               xmlContainerConfig.setAllowValidation(false);               xmlContainerConfig.setIndexNodes(true);               xmlContainerConfig.setNodeContainer(true);
// initialize
instance.xmlManager = new XmlManager(instance.getEnvironment(),                    instance.getXmlManagerConfig());
instance.xmlContainer = instance.xmlManager.openContainer(                              containerName, instance.getXmlContainerConfig());
private ThreadLocal<XmlTransaction> transaction = new ThreadLocal<XmlTransaction>();
public XmlTransaction getTransaction() throws Exception {
          if (transaction.get() == null) {
               XmlTransaction t = xmlManager.createTransaction();
               log.info("Transaction created, id: " + t.getTransaction().getId());
               transaction.set(t);
          } else if (log.isDebugEnabled()) {
               log.debug("Reusing transaction, id: "
                         + transaction.get().getTransaction().getId());
          return transaction.get();
     private XmlQueryContext createQueryContext(String docName) throws Exception {
          XmlQueryContext context = xmlManager.createQueryContext(
                    XmlQueryContext.LiveValues, XmlQueryContext.Lazy);
          List<NamespacePrefix> namespacePrefixs = documentPrefixes.get(docName);
          // declare ddi namespaces
          for (NamespacePrefix namespacePrefix : namespacePrefixs) {
               context.setNamespace(namespacePrefix.getPrefix(), namespacePrefix
                         .getNamespace());
          return context;
     public XmlResults xQuery(String query) throws Exception {
          XmlQueryExpression xmlQueryExpression = null;
          XmlQueryContext xmlQueryContext = getQueryContext(docName);
          try {
               xmlQueryExpression = xmlManager.prepare(getTransaction(), query,
                         xmlQueryContext);
               log.info(query.toString());
          } catch (Exception e) {
               if (xmlQueryContext != null) {
                    xmlQueryContext.delete();
               throw new DDIFtpException("Error prepare query: " + query, e);
          XmlResults rs = null;
          try {
               rs = xmlQueryExpression.execute(getTransaction(), xmlQueryContext);
          // catch deadlock and implement retry
          catch (Exception e) {
               throw new DDIFtpException("Error on query execute of: " + query, e);
          } finally {
               if (xmlQueryContext != null) {
                    xmlQueryContext.delete();
               xmlQueryExpression.delete();
          return rs;
<?xml version="1.0" encoding="UTF-8"?>
<Test version="0.1">
<Project id="test-project" agency="dda">
<File id="large-doc.xml" type="ddi"/>
<File id="complex-doc.xml" type="ddi"/>
</Project>
<Project id="2nd-project" agency="test.org"/>
</Test>
Problem:
All the queries are run through the xQuery method and I do delete the XmlResults afterwards. How do I get around the 'Transaction specified for a non-transactional database' what is the transactions doing? How do I get state information out of a transaction? What am I doing wrong here?
1 First I insert a node:
Transaction created, id: -2147483647
Adding document: large-doc.xml to xml container
Reusing transaction, id: -2147483647
Working doc: ddieditor.xml
Root element: Test
Reusing transaction, id: -2147483647
insert nodes <Project id="JUnitTest" agency="test.org"></Project> into doc("dbxml:/ddieditor.dbxml/ddieditor.xml")/Test
Reusing transaction, id: -2147483647
2 Then do a query:
Reusing transaction, id: -2147483647
doc("dbxml:/ddieditor.dbxml/ddieditor.xml")/Test/Project/@id
Reusing transaction, id: -2147483647
3 The same query again:
Reusing transaction, id: -2147483647
doc("dbxml:/ddieditor.dbxml/ddieditor.xml")/Test/Project/@id
Reusing transaction, id: -2147483647
4 Delete a node:
Reusing transaction, id: -2147483647
delete node for $x in doc("dbxml:/ddieditor.dbxml/ddieditor.xml")/Test/Project where $x/@id = '2nd-project' return $x
Reusing transaction, id: -2147483647
5 Then an error on query:
Reusing transaction, id: -2147483647
doc("dbxml:/ddieditor.dbxml/ddieditor.xml")/Test/Project/@id
Reusing transaction, id: -2147483647
Transaction specified for a non-transactional database
com.sleepycat.dbxml.XmlException: Error: Invalid argument, errcode = DATABASE_ERROR
     at com.sleepycat.dbxml.dbxml_javaJNI.XmlResults_hasNext(Native Method)
     at com.sleepycat.dbxml.XmlResults.hasNext(XmlResults.java:136)
Message was edited by:
jannikj

Answer 1

Ok got it solved by increasing the locks lockers and mutex's I allso increased the the log buffer size:
environmentConfig = new EnvironmentConfig();
               // general environment
               environmentConfig.setAllowCreate(true);
               environmentConfig.setRunRecovery(true); // light recovery on startup
               //environmentConfig.setRunFatalRecovery(true); // heavy recovery on startup
               environmentConfig.setJoinEnvironment(true); // reuse of environment: ok
               environmentConfig.setThreaded(true);
               // log subsystem
               environmentConfig.setInitializeLogging(true);
               environmentConfig.setLogAutoRemove(true);
               environmentConfig.setLogBufferSize(128 * 1024); // default 32KB
               environmentConfig.setInitializeCache(true); // shared memory region
               environmentConfig.setCacheSize(2500 * 1024 * 1024); // 250MB cache
               // transaction
               environmentConfig.setTransactional(true);
               environmentConfig.setTxnMaxActive(0); // live forever, no timeout               
               // locking subsystem
               environmentConfig.setInitializeLocking(true);
environmentConfig.setMutexIncrement(22);
environmentConfig.setMaxMutexes(200000);
environmentConfig.setMaxLockers(200000);
environmentConfig.setMaxLockObjects(200000); // default 1000
environmentConfig.setMaxLocks(200000);
// deadlock detection
               environmentConfig.setLockDetectMode(LockDetectMode.MINWRITE);
In the docs by Oracle it is limited information given regarding the impact of these settings and their options. Can you guys point in a direction where I can find some written answers or it hands on?