Troubles with connection pool onto oc4j 1.0.2.2.1

hi all,
we try migrate our ejb-application to oc4j from weblogic. and I can't understand how can I set connection pooling for oc4j.
our envirionment are Solaris2.8, Oracle 8.1.7, OC4J 1.0.2.2.1.
our datasource I've defined as:
then in code we standard snippet for get pooled connection.

You can add the following parameters:
min-connections="50"
max-connections="100"
to increase pool connections.
(However Ive found the datsource is not very forgiving regarding
sqls withins sqls)
Hope this helps

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Is it possible to retrieve a cursor bound to an out parameter when using the thin
driver to establish the connection pool to the database? I am currently using
the JDriver to connect create the pool and the pool driver to connect from the
app to the connection pool. We'd like to avoid using the Oracle client if possible.
Currently I register the out parameter as java.sql.Types.OTHER, then call getResultSet(1)
on the weblogic.jdbc.pool.CallableStatement object. But it breaks when I change
the connection pool to use the thin driver. The error is at the bottom of this
post.
I think I could possibly get the current pool driver to work if can find some
documentation on these two methods:
void registerOutParameter(int i, int j, int k, int l)
void registerOutParameter(int i, int sqlType, java.lang.String typeName)
I have no idea what to put in for the ints in the first method or for sqlType
or typeName. Can anyone point me to where I can find this documentation?
E-docs mentions this class: weblogic.jdbc.vendor.oracle.OracleCallableStatement.
(http://edocs.bea.com/wls/docs61/jdbc/thirdparty.html#1023867). Should I consider
this? If so where is it?
Thanks a lot,
Matt Savino
<<< error when using thin driver >>>
preparing callable stmt
callable stmt prepared, java.sql.Types.OTHER = 1111
java.sql.SQLException: Invalid column type
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:168)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:210)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:273)
at oracle.jdbc.driver.OracleStatement.get_internal_type(OracleStatement.java:4560)
at oracle.jdbc.driver.OracleCallableStatement.registerOutParameter(OracleCallableStatement.java:225)
at oracle.jdbc.driver.OracleCallableStatement.registerOutParameter(OracleCallableStatement.java:350)
at weblogic.jdbc.pool.Statement.registerOutParameter(Statement.java:617)
at jsp_servlet._reportmanager.__thin_outputresultset._jspService(__thin_outputresultset.java:145)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:263)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:200)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:2390)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:1959)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)

Thanks Joe, your answer pointed me in the right direction. Just in case anyone
wants to know, the solution took two changes:
CHANGE
cStat.registerOutParameter(1, java.sql.Types.OTHER);
TO
cStat.registerOutParameter(1, oracle.jdbc.driver.OracleTypes.CURSOR);
(cStat is an instance of weblogic.jdbc.pool.CallableStatement)
AND
rs = cStat.getResultSet(1);
TO
rs = cStat.getCursor(1);
Thanks again,
Matt
Joseph Weinstein <[email protected]> wrote:
Hi Matt.
Look at the Oracle thin driver documentation to determine what type you
should define in the registerOutParameter call. We use 'OTHER', but
their driver may use something else for CURSOR output parameters.
joe
Matt Savino wrote:
Is it possible to retrieve a cursor bound to an out parameter whenusing the thin
driver to establish the connection pool to the database? I am currentlyusing
the JDriver to connect create the pool and the pool driver to connectfrom the
app to the connection pool. We'd like to avoid using the Oracle clientif possible.
Currently I register the out parameter as java.sql.Types.OTHER, thencall getResultSet(1)
on the weblogic.jdbc.pool.CallableStatement object. But it breaks whenI change
the connection pool to use the thin driver. The error is at the bottomof this
post.
I think I could possibly get the current pool driver to work if canfind some
documentation on these two methods:
void registerOutParameter(int i, int j, int k, int l)
void registerOutParameter(int i, int sqlType, java.lang.String typeName)
I have no idea what to put in for the ints in the first method or forsqlType
or typeName. Can anyone point me to where I can find this documentation?
E-docs mentions this class: weblogic.jdbc.vendor.oracle.OracleCallableStatement.
(http://edocs.bea.com/wls/docs61/jdbc/thirdparty.html#1023867). Should
I consider
this? If so where is it?
Thanks a lot,
Matt Savino
<<< error when using thin driver >>>
preparing callable stmt
callable stmt prepared, java.sql.Types.OTHER = 1111
java.sql.SQLException: Invalid column type
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:168)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:210)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:273)
at oracle.jdbc.driver.OracleStatement.get_internal_type(OracleStatement.java:4560)
at oracle.jdbc.driver.OracleCallableStatement.registerOutParameter(OracleCallableStatement.java:225)
at oracle.jdbc.driver.OracleCallableStatement.registerOutParameter(OracleCallableStatement.java:350)
at weblogic.jdbc.pool.Statement.registerOutParameter(Statement.java:617)
at jsp_servlet._reportmanager.__thin_outputresultset._jspService(__thin_outputresultset.java:145)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:263)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:200)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:2390)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:1959)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
PS: Folks: BEA WebLogic is expanding rapidly, with both entry and advanced
positions
for people who want to work with Java, XML, SOAP and E-Commerce infrastructure
products.
We have jobs at Nashua NH, Liberty Corner NJ, San Francisco and San Jose
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Send resumes to [email protected]

Unable to get the expected results with connection pooling

Hi All,
I have been trying to create JDBC connection pooling provided by the Apache Tomcat 4.0 with MySQL 4.0.16-nt at http://jakarta.apache.org/tomcat/tomcat-4.1-doc/jndi-datasource-examples-howto.html and my configuration is as follows
server.xml
<Context path="/DBTest" docBase="DBTest"
debug="5" reloadable="true" crossContext="true">
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="localhost_DBTest_log." suffix=".txt"
timestamp="true"/>
<Resource name="jdbc/TestDB"
auth="Container"
type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/TestDB">
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>

<parameter>
<name>maxActive</name>
<value>100</value>
</parameter>

<parameter>
<name>maxIdle</name>
<value>30</value>
</parameter>

<parameter>
<name>maxWait</name>
<value>10000</value>
</parameter>

<parameter>
<name>username</name>
<value>javauser</value>
</parameter>
<parameter>
<name>password</name>
<value>javadude</value>
</parameter>

<parameter>
<name>driverClassName</name>
<value>org.gjt.mm.mysql.Driver</value>
</parameter>

<parameter>
<name>url</name>
<value>jdbc:mysql://localhost:3306/javatest?autoReconnect=true</value>
</parameter>
</ResourceParams>
</Context>
web.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<description>MySQL Test App</description>
<resource-ref>
<description>DB Connection</description>
<res-ref-name>jdbc/TestDB</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
</web-app>
test.jsp
<jsp:useBean id="foo" class="foo.DBTest" scope="page" />
<html>
<head>
<title>DB Test</title>
</head>
<body>
<%
foo.DBTest tst = new foo.DBTest();
tst.init();
%>
<h2>Results</h2>
Foo <%= tst.getFoo() %>
Bar <%= tst.getBar() %>
</body>
</html>
DBTest.java package
package foo;
import javax.naming.*;
import javax.sql.*;
import java.sql.*;
public class DBTest {
String foo = "Not Connected";
int bar = -1;
public void init() {
try{
Context ctx = new InitialContext();
if(ctx == null )
throw new Exception("Boom - No Context");
DataSource ds =
(DataSource)ctx.lookup(
"java:comp/env/jdbc/TestDB");
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;}
Now when I am trying to run this on browser, everything goes fine except it doesn't show the expected results, instead of that it shows following in the browser:-
Results
Foo Not Connected
Bar -1
Can anybody help me out as to why I am getting such result while everything is right from my side. Is the program unable to connect to the database or it is not supporting the JDBC version that I am using.
Thanks in advance
Regards
Vikas

Oh, I think this is not the right place to post this message. I have placed the same in other place of this forum. please ignore this post here!!
MJ, by the way the link that you suggested is not useful to me.
Thank you

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Hi
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import com.ba.cdwebservice.schema.cdLookupPacket.LookupFailureReasons;
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import java.util.Vector;
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import javax.naming.directory.DirContext;
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//      this.initialConnections = 1;
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     busyConnections = new Vector(maxConnections);
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         * You can't just make a new connection in the foreground when none are
         * available, since this can take several seconds with a slow network
         * connection. Instead, start a thread that establishes a new
         * connection, then wait. You get woken up either when the new
         * connection is established or if someone finishes with an existing
         * connection.
    private void makeBackgroundConnection() {
     connectionPending = true;
     try {
         Thread connectThread = new Thread(this);
         log.debug("background thread created");
         connectThread.start();
     } catch (OutOfMemoryError oome) {
         log.error("makeBackgroundConnection ="+ oome.getStackTrace());
         * Thread run method
    public void run() {
     String methodIdentifier = "run";
     try {
         Context connection = makeNewConnection();
         synchronized (this) {
          availableConnections.add(connection);
          connectionPending = false;
          notifyAll();
     } catch (Exception e) { // SQLException or OutOfMemory
         // Give up on new connection and wait for existing one
         // to free up.
         String errMsg = "Exception raised =" + e.getStackTrace();
         log.error(errMsg);
         * This explicitly makes a new connection. Called in the foreground when
         * initializing the ConnectionPool, and called in the background when
         * running.
         * @return Context
         * @throws CDLookupException
    private Context makeNewConnection() throws CDLookupException {
     String methodIdentifier = "makeNewConnection";
     Context context = null;
     env = new Properties();
     log.debug("inside " + methodIdentifier);
     try {
         env.put(Context.INITIAL_CONTEXT_FACTORY,
              getVendorContextFactoryClass());
         env.put(Context.PROVIDER_URL, getLdapServerUrl());
         env.put("com.sun.jndi.ldap.connect.pool", "true");
         context = new InitialDirContext(env);
     } catch (NamingException e) {
         String errMsg = "CDLdapBuilder connect() - failure while attempting to contact "
              + ldapServerUrl + " Exception is " + e.toString();
         throw new CDLookupException(classIdentifier, methodIdentifier,
              errMsg, e, LookupFailureReasons.serviceUnavailable);
     } catch (Exception e) {
         String errMsg = "CDLdapBuilder connect() - failure while attempting to contact "
              + ldapServerUrl + " Exception is " + e.toString();
         throw new CDLookupException(classIdentifier, methodIdentifier,
              errMsg, e, LookupFailureReasons.serviceUnavailable);
     log.info("new connection :" + (threadCount++) + " name =" + context);
     log.debug("exit " + methodIdentifier);
     return context;
         * releases connection to the free pool
         * @param context
    public synchronized void free(Context context) {
     busyConnections.remove(context);
     availableConnections.add(context);
     // Wake up threads that are waiting for a connection
     notifyAll();
         * @return int give total no of avail connections.
    public synchronized int totalConnections() {
     return (availableConnections.size() + busyConnections.size());
         * Close all the connections. Use with caution: be sure no connections
         * are in use before calling. Note that you are not <I>required</I> to
         * call this when done with a ConnectionPool, since connections are
         * guaranteed to be closed when garbage collected. But this method gives
         * more control regarding when the connections are closed.
    public synchronized void closeAllConnections() {
     closeConnections(availableConnections);
     availableConnections = new Vector();
     closeConnections(busyConnections);
     busyConnections = new Vector();
         * Close all connections existing.
         * @param connections
         *                void
    private void closeConnections(Vector connections) {
     String methodIdentifier = "closeConnections";
     try {
         for (int i = 0; i < connections.size(); i++) {
          Context context = (Context) connections.get(i);
          if (context != null) {
              log.info(" connection name:" + context
                   + " removed. Threadcount =" + (threadCount++));
              context.close();
              context = null;
     } catch (NamingException e) {
         String errMsg = "CDLdapBuilder connect() - failure while attempting to contact "
              + ldapServerUrl + " Exception is " + e.toString();
         log.error(errMsg);
    public synchronized String toString() {
     String info = "ConnectionPool(" + getLdapServerUrl() + ","
          + getVendorContextFactoryClass() + ")" + ", available="
          + availableConnections.size() + ", busy="
          + busyConnections.size() + ", max=" + maxConnections;
     return (info);
         * @return the defaultSearchBase
    public final String getDefaultSearchBase() {
     return defaultSearchBase;
         * @param defaultSearchBase
         *                the defaultSearchBase to set
    public final void setDefaultSearchBase(String defaultSearchBase) {
     this.defaultSearchBase = defaultSearchBase;
         * @return the ldapServerUrl
    public final String getLdapServerUrl() {
     return ldapServerUrl;
         * @param ldapServerUrl
         *                the ldapServerUrl to set
    public final void setLdapServerUrl(String ldapServerUrl) {
     this.ldapServerUrl = ldapServerUrl;
         * @return the vendorContextFactoryClass
    public final String getVendorContextFactoryClass() {
     return vendorContextFactoryClass;
         * @param vendorContextFactoryClass
         *                the vendorContextFactoryClass to set
    public final void setVendorContextFactoryClass(
         String vendorContextFactoryClass) {
     this.vendorContextFactoryClass = vendorContextFactoryClass;
     * @return the availableConnections
    public final Vector getAvailableConnections() {
        return availableConnections;
}

hi ejp
Thx for the reply.
// Enable connection pooling
env.put("com.sun.jndi.ldap.connect.pool", "true");
Is this suffice to get the connection pool working,
Should i merely have a thread to maintain the connection with the ldap that uses sun's connection pool; or allow requestes to create new object for the connection and still this pool will hold.
for example in the above code instead to housekeep the thread merely maintain connection with the pool
or
should I directly connect each object with the ldap?
I am unable to understand how exactly sun's connection pool is working and how it should be used. I have gone thru the following example but picture is still hazy and undigestable to me.
java.sun.com/products/jndi/tutorial/ldap/connect/pool.html
Rgds

Hi Guys, can you please help me with Connection Pooling.

I have:-
Tomcat 5.0.27
MySQL 4
Apache 2.0.
JSP web pages.
I have been trying to get connection pooling working but i havent been successful yet. Please do help me make it happen.
I have posted my server.xml and web.xml from /conf/. They are not edited. I have also included the pages that I am currently ussing to connect to the database.
I need you to assist me with how I should edit the above.
1.     SERVER.XML
Where and how should I edit this file?
2.     WEB.XML
Where and how should I edit this file?
3.     DATABASE_INFO.JSP
<%
Class.forName("com.mysql.jdbc.Driver").newInstance();
%>
<%!
public java.sql.Connection dataconnect() throws SQLException {
Connection database_connector;
database_connector = DriverManager.getConnection("jdbc:mysql://localhost/publications?user=hello&password=hello");
return database_connector;
%>
<%!
public java.sql.Connection adminconnect(javax.servlet.http.HttpSession session) throws SQLException {
Connection database_connector;
if (session.getAttribute("s_conn")!=null) {
database_connector = (Connection) session.getAttribute("s_conn");
if (database_connector.isClosed()) {
database_connector = DriverManager.getConnection("jdbc:mysql://localhost/publications?user=hello&password=hello");
} else {
database_connector = DriverManager.getConnection("jdbc:mysql://localhost/publications?user=hello&password=hello");
session.setAttribute("s_conn", database_connector);
return database_connector;
%>
<%!
public String filedir() {
String directory = "C:/Tomcat/webapps/ROOT/publications/";
return directory;
%>
etc
Database Name : publications

Hi,
1- put your jdbc driver jar file in $CATALINA_HOME/common/lib (ex: C:\tomcat\common\lib )
2- Next, modify the web application deployment descriptor (/WEB-INF/web.xml) to declare the JNDI name under which you will look up preconfigured data source
take care of the ordering as below so resourc-ref tag is after taglib
<resource-ref>
<description>
Resource reference to a factory for java.sql.Connection
instances that may be used for talking to a particular
database that is configured in the server.xml file.
</description>
<res-ref-name>
jdbc/EmployeeDB
</res-ref-name>
<res-type>
javax.sql.DataSource
</res-type>
<res-auth>
Container
</res-auth>
</resource-ref>
3- add an element like this to the /META-INF/context.xml file in the web application. ( under ../webapps/mywebapplication/WEB-INF
<Context ...>
<Resource name="jdbc/EmployeeDB" auth="Container"
type="javax.sql.DataSource" username="hello" password="hello"
driverClassName="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost/publications"
maxActive="8" maxIdle="4"/>
</Context>
4- code sample
Context initCtx = new InitialContext();
Context envCtx = (Context) initCtx.lookup("java:comp/env");
DataSource ds = (DataSource)
envCtx.lookup("jdbc/EmployeeDB");
Connection conn = ds.getConnection();
... use this connection to access the database ...
conn.close();
The default data source support in Tomcat is based on the DBCP connection pool from the jakarta commons
Regards,
Alan Mehio
London,UK

Trouble with connecting to an App and restoring In App Purchases

I am having trouble with restoring my in app purchases. I had purchased the full season for crazy night out a while back but when I got the app again after restoring the app the full season wasn't on and it is trying to charge me for it. I had also bought the fantasy date app and the multipacks and unlike crazy night out it recognizes I made the purchase but when I click restore purchases or buy pack it won't download and it says can not connect to server and for me to check my settings and try again also for the ones I do have that were free when I click play or download all videos it says it can't connect to servers and the videos don't play. Is there anything I can do to retrieve these purchases back and get the videos to play.
It's not the Internet everything else works.

ftp doesn't work well in modern network environments, and the design of the protocol itself is basically incompatible with the inclusion of firewalls in modern networks. And it transmits the authentication credentials in cleartext.
Put another way, see if ssh and particularly sftp works here (either directly via the sftp command, or via a sftp GUI tool) works for your requirements.
Failing that, [here is ftp set-up information|http://labs.hoffmanlabs.com/node/942].
If it's the DNS set-up, then here is some [DNS server set-up information|http://labs.hoffmanlabs.com/node/1436]. And your Mac OS X client will need to have access to the same DNS information your server is using.

Weblogic 9.2 - Problem with Connection Pool not releasing resources

We have a third party application that is running Weblogic 9.2 and has a connection pool to a SQL 2005 db for queries within it's batch process. What I have noticed is that it does not seem to be releasing SQL cpu back after the batch and this is causing issues with processes for other dB's within the instance. Has anyone encountered this issue and if so what is the solution (short of isolating it within it's own instance). Can the connection be reset to release resources?

Yes it is a weblogic connection pool. What I mean is that when a batch run I can see the CPU for the SQL process associated with the connection increase but when the batch is completed the CPU remains high when I would expect it to move back down to an 'idle' level as after that as all it would be doing is the occasional "select 1' ping to keep the connection active.
What i do see is that the cpu in activity monitor shows high cpu and it never goes down unless the connection is killed and re-established. As this is a shared instance other apps are complaining of slow running procs.

Troubles with connection pool onto oc4j 1.0.2.2.1

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