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Hello –
I have been working with a J2EE developer for a couple of years as he’s built a relatively large financial application in JBoss (4.0.4). I have J2EE and Java experience from a few years ago, but find myself rusty at the current time. To move the project forward, I’m bringing the application into Eclipse (3.1.0). I working on MS Windows XP professional Version 2002 SP 2 and JDK version j2sdk1.4.2. My Eclipse is up to date, and I’ve gone through three or four tutorials at this point concerning J2EE database connectivity.
I know that with the correct configuration, all should be OK, but I’m having trouble with my Oracle database connectivity. I know that I’m missing something obvious here, but have not been able to locate the problem.
I have loaded an Oracle database 10g Express Edition onto my PC, and all is well with this. I have created a new user and a new table with data, and can connect to it both with the Web UI and with my IDE (Eclipse/myEclipse).
I am working to connect my J2EE application to the database. To begin, I’m using a very simple JSP and class to test my connection.
JSP:
This is: {WORKSPACE}/Test1Web/WebRoot/jsp/TestDB.jsp<html>
<head>
<title>DB Test</title>
</head>
<body><%
foo.DBTest tst = new foo.DBTest();
tst.init();
%><h2>Results</h2>
Foo <%= tst.getFoo() %><br/>
Bar <%= tst.getBar() %>
Status <%= tst.getStatus() %>
</body>
</html>Java Class:
This is: {WORKSPACE}/Test1Web/src/foo/DBTest.java
package foo;
import javax.naming.*;
import javax.sql.*;
import java.sql.*;public class DBTest {
String foo = “Not Connected”;
int bar = -1;
String status = ” “;public void init() {
try{Context initContext = new InitialContext();
if(initContext == null )
throw new Exception(“Boom – No Context”);status = status.concat(“\n after initContext2 \n”);
Context envContext = (Context)initContext.lookup(
“java:/comp/env”);status = status.concat(“initContext:”);
status = status.concat(initContext.getEnvironment().toString());
status = status.concat(“envContext:”);
status = status.concat(envContext.getEnvironment().toString());DataSource ds = (DataSource)envContext.lookup
(“jdbc/myOracle”);status = status.concat(“after DataSource \n”);
if (ds != null) {
Connection conn = ds.getConnection();if(conn != null) {
foo = “Got Connection “+conn.toString();
Statement stmt = conn.createStatement();
ResultSet rst =
stmt.executeQuery(
“select id, foo, bar from testdata”);
if(rst.next()) {
foo=rst.getString(2);
bar=rst.getInt(3);
}
conn.close();
}
}
}catch(Exception e) {
e.printStackTrace();
}
}public String getFoo() { return foo; }
public int getBar() { return bar;}
public String getStatus() { return status; }
}Here are the changes that I’ve made:
1. I put ojdbc14.jar file into: {JBOSS_HOME}/server/default/lib
2. I added the following resource code into: {JBOSS_HOME}/server/default/deploy/jbossweb-tomcat55.sar/server.xml
<Resource name=”jdbc/myOracle” auth=”Container”
type=”javax.sql.DataSource”/><ResourceParams name=”jdbc/myOracle”>
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>
<parameter>
<name>driverClassName</name>
<value>oracle.jdbc.OracleDriver</value>
</parameter>
<parameter>
<name>url</name>
<value>jdbc:oracle:thin:@127.0.0.1:1521:xe</value>
</parameter>
<parameter>
<name>username</name>
<value>pcion</value>
</parameter>
<parameter>
<name>password</name>
<value>myPassword</value>
</parameter>
<parameter>
<name>maxActive</name>
<value>20</value>
</parameter>
<parameter>
<name>maxIdle</name>
<value>10</value>
</parameter>
<parameter>
<name>maxWait</name>
<value>-1</value>
</parameter>
</ResourceParams>3. I added the following into: {WORKSPACE}/Test1Web/WebRoot/WEB-INF/web.xml
<resource-ref>
<description>Oracle Datasource</description>
<res-ref-name>jdbc/myOracle</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>Here is the problem I get when deploying:
org.jboss.deployment.DeploymentException: Error during deploy; – nested throwable: (javax.naming.NamingException: resource-ref: jdbc/myOracle has no valid JNDI binding. Check the jboss-web/resource-ref.)
4. I looked for jboss-web.xml, and found a number of these files within {JBOSS_HOME}/server/default/deploy. I went into one ({JBOSS_WEB}/server/default/deploy/jmx-console.war/WEB-INF/jboss-web.xml) and added the following code:
<resource-ref>
<description>Oracle DS example</description>
<res-ref-name>jdbc/myOracle</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>I continue to get this error:
org.jboss.deployment.DeploymentException: Error during deploy; – nested throwable: (javax.naming.NamingException: resource-ref: jdbc/myOracle has no valid JNDI binding. Check the jboss-web/resource-ref.)
Thanks so much for your help here. I like to push as far as I can, but I’ve reached my wit’s end at this point.
Take care,
Pete
One more thing:
With this configuration, when JBoss starts up, I do get the following confirmation:11:30:24,591 INFO [ConnectionFactoryBindingService] Bound ConnectionManager ‘jboss.jca:name=myOracle,service=DataSourceBinding’ to JNDI name ‘java:myOracle’
And another – here is one more file that was added:
{JBOSS_HOME}/server/default/deploy/oracle-ds.xml:<?xml version=”1.0″ encoding=”UTF-8″?>
<!– ===================================================================== –>
<!– –>
<!– JBoss Server Configuration –>
<!– –>
<!– ===================================================================== –><!– $Id: oracle-ds.xml,v 1.6 2004/09/15 14:37:40 loubyansky Exp $ –>
<!– ==================================================================== –>
<!– Datasource config for Oracle originally from Steven Coy –>
<!– ==================================================================== –><datasources>
<local-tx-datasource>
<jndi-name>myOracle</jndi-name>
<connection-url>jdbc:oracle:thin:@127.0.0.1:1521:xe</connection-url>
<!–Here are a couple of the possible OCI configurations.
For more information, see http://otn.oracle.com/docs/products/oracle9i/doc_library/release2/java.920/a96654/toc.htm<connection-url>jdbc:oracle:oci:@youroracle-tns-name</connection-url>
or
<connection-url>jdbc:oracle:oci:@(description=(address=(host=youroraclehost)(protocol=tcp)(port=1521))(connect_data=(SERVICE_NAME=yourservicename)))</connection-url>Clearly, its better to have TNS set up properly.
–><driver-class>oracle.jdbc.driver.OracleDriver</driver-class>
<user-name>pcion</user-name>
<password>xmasbaby</password><min-pool-size>5</min-pool-size>
<max-pool-size>100</max-pool-size><!– Uses the pingDatabase method to check a connection is still valid before handing it out from the pool –>
<!–valid-connection-checker-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleValidConnectionChecker</valid-connection-checker-class-name–>
<!– Checks the Oracle error codes and messages for fatal errors –>
<exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleExceptionSorter</exception-sorter-class-name>
<!– sql to call when connection is created
<new-connection-sql>some arbitrary sql</new-connection-sql>
–><!– sql to call on an existing pooled connection when it is obtained from pool – the OracleValidConnectionChecker is prefered
<check-valid-connection-sql>some arbitrary sql</check-valid-connection-sql>
–><!– corresponding type-mapping in the standardjbosscmp-jdbc.xml (optional) –>
<metadata>
<type-mapping>Oracle9i</type-mapping>
</metadata>
</local-tx-datasource></datasources>
Pete,
SID for oracle Express is XE no xe – oracle SID is case sensitive.
Check if your database network start correct with simple connection application like this :
public class TestDriver { private static String driverName = "oracle.jdbc.driver.OracleDriver"; private static String url = "jdbc:oracle:thin:@localhost:1521:XE"; private static String username = "YOUR_USERNAME"; private static String password = "YOUR_PASSWORD"; public static void main(String[] args) { try { Class.forName(driverName); Connection connection = DriverManager.getConnection(url,username,password); } catch (Exception e) { e.printStackTrace(); System.exit(1); } System.out.println("connection is ok"); } }for driver Class name you can use oracle.jdbc.driver.OracleDriver or oracle.driver.OracleDriver (oracle.jdbc.driver.OracleDriver is newer name)
Best regards
Peco
