from your stack trace I can see you manipulate many of the default jdbc settings:
Caused by: org.apache.ojb.broker.accesslayer.LookupException: Could not > borrow connection from pool - > org.apache.ojb.broker.metadata.JdbcConnectionDescriptor: > [EMAIL PROTECTED] > jcd-alias=BETConnection > default-connection=true > dbms=oracle > jdbc-level=2.0 > driver=oracle.jdbc.driver.OracleDriver > protocol=jdbc > sub-protocol=oracle:thin > [EMAIL PROTECTED]:1521:TOOLS > user=bet > password=***** > eager-release=true
only set true in JBoss <3.2.2 (but recommended to use 3.2.2 or higher)
> ConnectionPoolDescriptor={whenExhaustedAction=2, validationQuery=a > query,
OJB try to perform a validation query "a query", this will fail (not SQL compatible ;-)). Maybe this is the problem you have.
> maxIdle=2, maxActive=1, maxWait=3, removeAbandoned=true, > numTestsPerEvictionRun=5, testWhileIdle=true, > minEvictableIdleTimeMillis=4, > testOnReturn=true, logAbandoned=true, removeAbandonedTimeout=8, > timeBetweenEvictionRunsMillis=6, testOnBorrow=true}
again, I recommend to use default settings first and only change settings step by step.
> batchMode=true
I recommend to set batch-mode false to avoid side-effects. You can try to enable it when all stuff is working fine.
> useAutoCommit=AUTO_COMMIT_IGNORE_STATE
Again default is '1', you set '0'. But in managed enviroments you need to set '0'. Do you try to run OJB in a managed environment? This wouldn't be a good starting point for a newbie ;-)
ahh, now I see in your repository_database.xml what you have done. You picked up a jdbc-connection-descriptor used for junit testing and set you DB properties. This will not work, because the used properties don't be valid.
Did you see
http://db.apache.org/ojb/getting-started.html
http://db.apache.org/ojb/platforms.html
As Brian said before, recommended to use this way first to setup your environment. In build.properties you can set your DB. In the profiles directory you can find "templates" for all supported databases. Pick the oracle file and set your properties.
regards, Armin
> ignoreAutoCommitExceptions=true
[EMAIL PROTECTED] wrote:
I have done the 'ant build' and it makes no difference. If in the db.open() I change to the "default" db alias the system appears not to see my parameters at all. It has username and password set to null. There is clearly something terribly obvious that I am just not understanding about setting up OJB.
[org.apache.ojb.odmg.DatabaseImpl] ERROR: Open database failed: Borrow broker from pool failed, using PBKey org.apache.ojb.broker.PBKey: jcdAlias=default, user=null, password=null Borrow broker from pool failed, using PBKey org.apache.ojb.broker.PBKey: jcdAlias=default, user=null, password=null org.apache.ojb.broker.PBFactoryException: Borrow broker from pool failed, using PBKey org.apache.ojb.broker.PBKey: jcdAlias=default, user=null, password=null at org.apache.ojb.broker.core.PersistenceBrokerFactoryDefaultImpl.createPersistenceBroker(Unknown
Source) at org.apache.ojb.broker.PersistenceBrokerFactory.createPersistenceBroker(Unknown
Source) at org.apache.ojb.odmg.DatabaseImpl.open(Unknown Source) at com.gsk.bet.ConnectionTest.setUp(ConnectionTest.java:33)
As a background, I should explain that I am reasonably familiar with Torque. I am in the process of evaluating whether to go with OJB, which seems on paper to have some advantages over Torque, or whether to use Torque also for this project. I really want database independence, so I would prefer to use OJB.
|---------+---------------------------------> | | "Brian McCallister" | | | <[EMAIL PROTECTED]| | | ompany.com> | | | | | | | | | 29-Mar-2004 17:34 | | | Please respond to "OJB| | | Users List" | | | <[EMAIL PROTECTED]| | | g> | | | | |---------+---------------------------------> >-------------------------------------------------------------------------------------------------------------------------| | | | | | | | To: "OJB Users List" <[EMAIL PROTECTED]> | | | | cc: | | Subject: Re: Newbie at a standstill | >-------------------------------------------------------------------------------------------------------------------------|
Are you using the ant build? The ojb-blank project template does a property replace in the build -- the required database information is in the build.properties and is copied into the generated repository_database.xml that goes in build/ when compilation is run.
-Brian
On Mar 29, 2004, at 11:24 AM, [EMAIL PROTECTED] wrote:
I am trying to get OJB working and am getting absolutely nowhere, so I appeal to the list for some help.
The environment is OJB rc5, Eclipse IDE, Sun JDK1.4.2, Oracle 9, NT4.0. The running of the code is controlled by JUnit.
I can connect to the DB both with sqlplus and jdbc. I cannot actually get OJB to connect. Clearly I am missing something, but I cannot discover what. By fiddling around with the XML I can generate various sorts of errors. In all cases the url that the system is using appears to be entirely palusible.
Here are the code, the repository_database.xml and the output:
Code:
/* * Created on 26-Mar-2004 * CVS version $Header:$ */ package com.gsk.bet;
import java.util.*; import java.sql.*; import junit.framework.*; import org.apache.ojb.broker.*; import org.apache.ojb.broker.query.*; import org.odmg.*; import org.apache.ojb.odmg.*; import com.gsk.bet.Entity; /** * @author rxm1676 * @company GSK */ public class ConnectionTest extends TestCase { PersistenceBroker broker; Database db = null; Implementation odmg = null;
public void setUp() {
try { Class c = Class.forName("oracle.jdbc.driver.OracleDriver" ); broker = PersistenceBrokerFactory.defaultPersistenceBroker(); odmg = OJB.getInstance(); db = odmg.newDatabase(); db.open("BETConnection", Database.OPEN_READ_WRITE); } catch (Exception ex) { System.out.println(ex); }
}
public void tearDown() { if (broker != null) { broker.close(); } if (db != null) { try { db.close(); } catch (ODMGException ex2) { } }
}
/** * Null test. Just checks that OJB is properly installed, that it can see both the * XML and the bean classes, and that we can get a Broker and an ODMG instance. * */ public void testConnection() { }
/** * Ensure that we can actually talk to the DB from this machine * */ public void testRawJDBC() { try { Connection con = DriverManager.getConnection ("jdbc:oracle:thin:@ukt01368.ggr.co.uk:1521:TOOLS", "bet", "xxxx"); PreparedStatement sth = con.prepareStatement("select * from entity where betid<10"); ResultSet res = sth.executeQuery(); System.out.println("Excuted raw query"); while (res.next()) { Entity ent = new Entity(); ent.setBetid(res.getInt("BETID")); ent.setEntityType(res.getString("ENTITYTYPE")); ent.setDescriptor(res.getString("DESCRIPTOR")); System.out.println("raw retrieval of "+ent); } res.close(); con.close(); } catch (Exception e) { System.out.println("Caught raw exception " + e); } } /** * * @author rxm1676 * @company GSK */ public void testODMGFetchSingle() { Transaction tx = odmg.newTransaction(); try {
OQLQuery query = odmg.newOQLQuery(); query.create( "select betid, entityType, descriptor from " + Entity.class.getName() + " where betid = 1"); DList results = (DList)query.execute(); for (Iterator iter = results.iterator(); iter.hasNext();) { tx.begin(); Entity res = (Entity)iter.next(); System.out.println("Retrieved " + res); tx.commit(); } } catch (QueryInvalidException qie) { System.out.println(qie); tx.abort(); } catch (QueryException qe) { System.out.println(qe); tx.abort(); }
}
/** * Retrieve a single object using the PersistenceBroker * @author rxm1676 * @company GSK */ public void testPBFetchSingle() { Entity example = new Entity(); example.setBetid(1); Query q = QueryFactory.newQueryByExample(example); Entity res = (Entity)broker.getObjectByQuery(q); System.out.println("PB fetched "+res); } }
Database_repopsitory.xml
<!-- @version $Id: repository_database.xml,v 1.17 2003/11/27 16:42:12
arminw Exp $ -->
<!-- Define here all used connections. One defined connection should be defined as the default one, by set default-connection="true" - this could be done at runtime too.
It is possible to set user/password at runtime or let login different users at runtime using the same database. Use different PBKey with same jcdAlias name but different user/password.
Ditto it is possible to add jdbc-connection-descriptor at runtime using the MetadataManager. -->
<!-- this connection was used as the default one within OJB --> <jdbc-connection-descriptor jcd-alias="@JCD_ALIAS@" default-connection="false" platform="@DBMS_NAME@" jdbc-level="@JDBC_LEVEL@" driver="@DRIVER_NAME@" protocol="@URL_PROTOCOL@" subprotocol="@URL_SUBPROTOCOL@" dbalias="@URL_DBALIAS@" username="@USER_NAME@" password="@USER_PASSWD@" eager-release="false" batch-mode="false" useAutoCommit="1" ignoreAutoCommitExceptions="false"
<connection-pool maxActive="21" validationQuery="" />
<sequence-manager className ="org.apache.ojb.broker.util.sequence.SequenceManagerHighLowImpl"> <attribute attribute-name="grabSize" attribute-value="20"/> <attribute attribute-name="autoNaming" attribute-value="true"/> <attribute attribute-name="globalSequenceId" attribute-value ="false"/> <attribute attribute-name="globalSequenceStart" attribute-value ="10000"/> </sequence-manager> </jdbc-connection-descriptor>
<!-- Datasource example --> <!-- jdbc-connection-descriptor jcd-alias="default"
default-connection="false"
platform="Hsqldb"
jdbc-level="2.0"
jndi-datasource-name="java:DefaultDS"
username="sa"
password="" eager-release="false" batch-mode="false" useAutoCommit="0"
ignoreAutoCommitExceptions="false"
<attribute attribute-name="autoNaming"<sequence-manager className ="org.apache.ojb.broker.util.sequence.SequenceManagerNextValImpl">
attribute-value="true"/></sequence-manager>
</jdbc-connection-descriptor -->
<!-- NOTE: This is a test descriptor used within the junit test suite, do not change any value. A test db connections used for junit tests. This connection matches a hsql database called 'OJB_FarAway' If you do not use the test suite, you could delete this descriptor. This descriptor was used to check multiple database use. --> <jdbc-connection-descriptor jcd-alias="farAway" platform="Hsqldb" jdbc-level="2.0" driver="org.hsqldb.jdbcDriver" protocol="jdbc" subprotocol="hsqldb" dbalias="../OJB_FarAway" username="sa" password="" batch-mode="false"
<connection-pool maxActive="6" whenExhaustedAction="0" validationQuery="select count(*) from OJB_HL_SEQ" />
<sequence-manager className ="org.apache.ojb.broker.util.sequence.SequenceManagerHighLowImpl"> <attribute attribute-name="grabSize" attribute-value="5"/> </sequence-manager> </jdbc-connection-descriptor>
<!-- NOTE: This is a test descriptor used within the junit test suite, do not change any value. If you do not use the test suite, you could delete this descriptor. In the the test directory under
org.apache.ojb.broker.metadata.MetadataTest#testReadConnectionDescripto r this descriptor will be evaluated. --> <jdbc-connection-descriptor jcd-alias="BETConnection" default-connection="true" platform="oracle" jdbc-level="2.0" driver="oracle.jdbc.driver.OracleDriver" protocol="jdbc" subprotocol="oracle:thin" dbalias="@ukt01368.ggr.co.uk:1521:TOOLS" username="bet" password="xxxx" eager-release="true" batch-mode="true" useAutoCommit="0" ignoreAutoCommitExceptions="true"
<object-cache class ="org.apache.ojb.broker.cache.ObjectCacheEmptyImpl"> <attribute attribute-name="cacheKey1" attribute-value ="cacheValue1"/> <attribute attribute-name="cacheKey2" attribute-value ="cacheValue2"/> </object-cache>
<connection-pool maxActive="1" maxIdle="2" maxWait="3" minEvictableIdleTimeMillis="4" numTestsPerEvictionRun="5" testOnBorrow="true" testOnReturn="true" testWhileIdle="true" timeBetweenEvictionRunsMillis="6" whenExhaustedAction="2" validationQuery="a query" logAbandoned="true" removeAbandoned="true" removeAbandonedTimeout="8" />
<sequence-manager className ="org.apache.ojb.broker.util.sequence.SequenceManagerHighLowImpl"> <attribute attribute-name="key1" attribute-value="value1"/> <attribute attribute-name="key2" attribute-value="value2"/> </sequence-manager> </jdbc-connection-descriptor>
Output:
Excuted raw query raw retrieval of BET ID: 1 EntityType: Protein Descriptor;null raw retrieval of BET ID: 2 EntityType: Protein Descriptor;null raw retrieval of BET ID: 3 EntityType: Protein Descriptor;null raw retrieval of BET ID: 4 EntityType: Protein Descriptor;null raw retrieval of BET ID: 5 EntityType: Protein Descriptor;null raw retrieval of BET ID: 6 EntityType: Protein Descriptor;null raw retrieval of BET ID: 7 EntityType: Protein Descriptor;null raw retrieval of BET ID: 8 EntityType: Protein Descriptor;null raw retrieval of BET ID: 9 EntityType: Protein Descriptor;null [org.apache.ojb.broker.accesslayer.JdbcAccessImpl] ERROR: PersistenceBrokerException during the execution of the query: Used ConnectionManager instance could not obtain a connection Used ConnectionManager instance could not obtain a connection org.apache.ojb.broker.PersistenceBrokerException: Used ConnectionManager instance could not obtain a connection at org.apache.ojb.broker.accesslayer.StatementManager.getPreparedStatement (Unknown
Source) at org.apache.ojb.broker.accesslayer.JdbcAccessImpl.executeQuery(Unknown Source) at org.apache.ojb.broker.accesslayer.RsQueryObject.performQuery(Unknown Source) at org.apache.ojb.broker.accesslayer.RsIterator.<init>(Unknown Source) at org.apache.ojb.broker.core.RsIteratorFactoryImpl.createRsIterator(Unkno wn Source) at org.apache.ojb.broker.core.PersistenceBrokerImpl.getRsIteratorFromQuery (Unknown
Source) at org.apache.ojb.broker.core.PersistenceBrokerImpl.getIteratorFromQuery(U nknown
Source) at org.apache.ojb.broker.core.PersistenceBrokerImpl.getObjectByQuery(Unkno wn Source) at org.apache.ojb.broker.core.DelegatingPersistenceBroker.getObjectByQuery (Unknown
Source) at org.apache.ojb.broker.core.DelegatingPersistenceBroker.getObjectByQuery (Unknown
Source) at com.gsk.bet.ConnectionTest.testPBFetchSingle(ConnectionTest.java:127) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.ja va:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccesso rImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at junit.framework.TestCase.runTest(TestCase.java:154) at junit.framework.TestCase.runBare(TestCase.java:127) at junit.framework.TestResult$1.protect(TestResult.java:106) at junit.framework.TestResult.runProtected(TestResult.java:124) at junit.framework.TestResult.run(TestResult.java:109) at junit.framework.TestCase.run(TestCase.java:118) at junit.framework.TestSuite.runTest(TestSuite.java:208) at junit.framework.TestSuite.run(TestSuite.java:203) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteT estRunner.java:392) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRu nner.java:276) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestR unner.java:167) Caused by: org.apache.ojb.broker.accesslayer.LookupException: Could not borrow connection from pool - org.apache.ojb.broker.metadata.JdbcConnectionDescriptor: [EMAIL PROTECTED] jcd-alias=BETConnection default-connection=true dbms=oracle jdbc-level=2.0 driver=oracle.jdbc.driver.OracleDriver protocol=jdbc sub-protocol=oracle:thin [EMAIL PROTECTED]:1521:TOOLS user=bet password=***** eager-release=true ConnectionPoolDescriptor={whenExhaustedAction=2, validationQuery=a query, maxIdle=2, maxActive=1, maxWait=3, removeAbandoned=true, numTestsPerEvictionRun=5, testWhileIdle=true, minEvictableIdleTimeMillis=4, testOnReturn=true, logAbandoned=true, removeAbandonedTimeout=8, timeBetweenEvictionRunsMillis=6, testOnBorrow=true} batchMode=true useAutoCommit=AUTO_COMMIT_IGNORE_STATE ignoreAutoCommitExceptions=true
[EMAIL PROTECTED] 3118a
sequenceManagerClass=class org.apache.ojb.broker.util.sequence.SequenceManagerHighLowImpl Properties={key2=value2, key1=value1} ] ] at org.apache.ojb.broker.accesslayer.ConnectionFactoryPooledImpl.getConnec tionFromPool(Unknown
Source) at org.apache.ojb.broker.accesslayer.ConnectionFactoryAbstractImpl.lookupC onnection(Unknown
Source) at org.apache.ojb.broker.accesslayer.ConnectionManagerImpl.getConnection(U nknown
Source) ... 26 more Caused by: java.util.NoSuchElementException: Could not create a validated object at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObje ctPool.java:851) ... 29 more
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