Appropriate location for a OLAP connection pool?

Greetings.
We are working on a J2EE infrastructure and application. We have
chose JATO for the MVC interface. Currently, we are working on
building a connection pool for an OLAP database. This is actually a
small component of our DataServices layer which will soon include
other data sources beyond OLAP (e.g., RDBMS).
As we are inexperienced with JATO we wonder which of the following is
the most appropriate location for the connection pool:
1. Web layer - Modeled as a JATO application container. The utility
here is that we want to thread off new connection pools and Jato
helps us get this 'for free'.
2. EJB - App server (iPlanet AS) session bean. Possibly more hand-
coding for the threading part of the connection pool, but more
flexible across the enterprise layer.
I appreciate any comments and suggestions.

It's ok I found the answer to connection pooling at http://www.developer.com/db/print.php/10920_2172891_3 if anyone is interested.
Cheers!
James

Similar Messages

When is it appropriate to use DataSource (or Connection pooling)?

Hello all,
I'm having some design issues with my application and I'm starting to think that maybe using Connection pooling is not suited for my application. I'm using Tomcat 5.5.12 if it's any relevant..
The architecture of our application looks like this:
Servlets -> App Helper classes -> DB/Accessor classes
looks like the three-tier architecture described in this document: http://www.subrahmanyam.com/articles/servlets/ServletIssues.html
I have read on the Tomcat docs that said that using DataSource is good practice and improves efficiency since it recycles database connections. However, if the accessor/DB classes are not servlets, how can I use the DataSource facility that interacts with Tomcat?
I would like to know whether it is a good idea to use DataSource in my case and if so, how? (since they are not servlets)
Thanks in advance :)

Hi. Thank you for replying.
In the examples that I've seen that use JNDI for Database access, it seems that DataSource is always used--in other words, JNDI and DataSource always seem to be used together (in Servlets). I have not found a case where JNDI is used by itself to access the Database--perhaps I'm not looking in the right place. Could you point me to some documentation maybe?
Thanks a lot!

Look for a good connection pooler ! HELP !

Hello everybody,
My web application uses a connection pooler that i got from the site www.bitmechanic.com
but it doesn't work well.
I chosed this tool because it was for free.
I tryed other free connection poolers such us PoolMan with the same results.
Please could you advise me a very good free connection pooler to use ?
I asked in other newsgroup but i didn't get an answer !
Cheers.
Stefano

Stefano,
You may be better off by spending a little bit of money to get some
real driver like Connect JDBC Drivers from DataDirect Technologies
(www.datadirect-technologies.com). You get lot of functionality and
exceptional support. In the end you would save lot more in reduced
development time/costs.
Bill
Richard John <[email protected]> wrote in message news:<[email protected]>...
I have used inet JDBC driver: www.inetsoftware.de without any problems. Comes relatively cheap too.

Requirements for JDBC Driver needed for SOA 8 }connection pool

Hi,
I have an AS400 jdbc driver. This driver is JDBC API version 2.x. Also is a Driver Type 4.
What are the requirements of a JDBC Driver needed for connection pool in SOA 8?
Thanks.
Lorenzo Jimenez

You can use pretty much any jdbc driver, including type 2 and type 4.
You need to make sure your shared libraries needed by the driver are available to the appserver when you boot.
Other than that, it is no different than configuring any other driver.

Help in creating the connection pool for Oracle 8i using Jdriver

Hi
Iam pretty new to Weblogic and would be greatfull if some one can help me
out in finding the parameters to be specified in Weblogic console for creating
a Connection pool for Oracle 8i database running on solaris. I have installed
necessary client libraries in weblogic machine.
The details for my database are as follows
database name : mydb
database server : 173.24.24.1
database port : 1521
username : myuser
I would appreciate if you can provide me the following details to be entered in
weblogic console for creating the connection pool
URL
DRIVER CLASS NAME
PROPERTIES
ACL NAME
PASSWORD
Thanks,
S Hari

Hari
Jdbc Connection Pool Configuration
URL= jdbc:weblogic:oracle
DRIVER CLASS NAME=weblogic.jdbc.oci.Driver
PROPERTIES
user=myuser
password=<password in mydb>
server=mydb
After configuring Connection Pool Select Targets tab. Select Server from Available
to Chosen.
Deepak
Hari wrote:
Hi
Iam pretty new to Weblogic and would be greatfull if some one can help me
out in finding the parameters to be specified in Weblogic console for creating
a Connection pool for Oracle 8i database running on solaris. I have installed
necessary client libraries in weblogic machine.
The details for my database are as follows
database name : mydb
database server : 173.24.24.1
database port : 1521
username : myuser
I would appreciate if you can provide me the following details to be entered in
weblogic console for creating the connection pool
URL
DRIVER CLASS NAME
PROPERTIES
ACL NAME
PASSWORD
Thanks,
S Hari

How to Retrieve Server Name for creating connection pool during startup!

Hi All,
I am going thru the edocs documentation of weblogic for creating the connection pool and the datasource dynamically. The URL I referred to was as under
http://edocs.bea.com/wls/docs81/jdbc/programming.html
There is a sample given in the above-mentioned URL. The Server MBean is created by passing the server name.
The code below mentioned was have placed in my dblib.java
svrAdminMBean = (ServerMBean)adminMBeanHome.getAdminMBean("myserver", "Server");
I am creating the connection pool from the servlet by invoking the dblib.java
I cannot hard-code the server name in the dblib.java since the same code was shared across multiple servlets.
Each Servlet will create its own connection pool during application server startup.
Is there a way to retrieve the server name in which the dblib.java is invoked.
Any pointers to info source will be REALLY appreciated.
Many Thanks in Advance,
C R Baradwaj

You can get it from the Java system property weblogic.Name, i.e. System.getProperty("weblogic.Name");
Cheers
Feargal

Monitoring Connection Pools

Hello All,
Environment details: OBIEE - 10.1.3.4.1 on 10gAS , Solaris 10. Single Node
We are implementing OBIEE in our organization and every quarter we add more number of data sources, dashboards and users. Recently we have started observing slowness while logging in. After crosschecking we have observed that not having separate connection pools for session variables might be one of the issue.
Before defining any new connection pools, we would like to take a proper step to design our connection pools. But we are unable to locate proper resources for monitoring the connection pool usage at a give point of time. Ideally we would to automate a job which will collect statistics of all available connection pools, users at a decent level of detail. This can help us in identifying the pattern of usage and further help us in defining an optimal connection pool strategy.
Could someone please guide me to a proper resource ? Can UDML help me here ? Any tips?
Thanks a lot for your help.
~Ravi.M

As far as I know there isn't any way of checking the connection pool usage from the OBIEE layer. But your DBA should able to queries to monitor the OBIEE connection usage from the database side. As for your question about designing connections pools the documentation is very extensive on this subject, have you reviewed the relevant section in the server Administration Guide?
After crosschecking we have observed that not having separate connection pools for session variables might be one of the issue.This is specifically mentioned in the documentation, you should separate connections for your Init Blocks. Also you should try to consolidate Init Blocks to reduce the database call overhead. In addition to this I can mention that most login problems relate to Init Blocks taking long to run rather than connection pool issues. Make sure your Init Blocks return data quickly. Also if you have a lot of session init blocks you may want to set some depencies between them. Suppose you have 10 session init blocks. If two users login at the same time OBIEE will try to run all those queries at the same time, should the max connections be set that high (20). By setting some execution depencies in your Init Blocks you can control the execution to reduce the parallelism and make them to run a bit more serial reducing the connection pool usage.

WebLogic 6.1 losing connection pools and deployments on restart

Hi,
Has anyone else seen a problem where it appears that processing of
config.xml is incomplete, without any error message? For example, a
connection pool that is deployed fine through the console, shows as
undeployed (available) when the server is restarted, regardless of how the
server is shut down.
Most recently, this happened with a connection pool and tx data source I've
been using for weeks, when I added a RDBMSRealm going to the same database.
The EJB deployment that needs the tx data source fails on startup, but if I
redeploy the connection pool and tx data source through the console and then
deploy the EJBs everything works. Until I restart the server, when the
problem recurs.
If I go back to my backed up config.xml, without the RDBMSRealm, everything
works fine at startup.
I see no error message in any log file: it's as though config.xml entries
are being ignored.
I attach my config.xml file. The multiple targets are the result of
redeploying through the console: editing them out does't fix the problem.
Regards,
Rod Johnson
[config.xml]

hi.
Please post this question in weblogic.developer.interest.jdbc.
Thanks,
Michael
Rod Johnson wrote:
Hi,
Has anyone else seen a problem where it appears that processing of
config.xml is incomplete, without any error message? For example, a
connection pool that is deployed fine through the console, shows as
undeployed (available) when the server is restarted, regardless of how the
server is shut down.
Most recently, this happened with a connection pool and tx data source I've
been using for weeks, when I added a RDBMSRealm going to the same database.
The EJB deployment that needs the tx data source fails on startup, but if I
redeploy the connection pool and tx data source through the console and then
deploy the EJBs everything works. Until I restart the server, when the
problem recurs.
If I go back to my backed up config.xml, without the RDBMSRealm, everything
works fine at startup.
I see no error message in any log file: it's as though config.xml entries
are being ignored.
I attach my config.xml file. The multiple targets are the result of
redeploying through the console: editing them out does't fix the problem.
Regards,
Rod Johnson
<?xml version="1.0" encoding="UTF-8"?>

<Domain Name="rj">
<Log FileName="config/rj/logs/wl-domain.log" Name="rj"/>
<Application Deployed="true" Name="ticket-app" Path=".\config\rj\applications\ticket-app">
<EJBComponent Name="ticket-ejb/ticket-ejb"
Targets="rj,rj,rj,rj,rj,rj" URI="ticket-ejb/ticket-ejb.jar"/>
<WebAppComponent Name="ticket-war" Targets="rj,rj" URI="ticket-war"/>
</Application>
<Security GuestDisabled="false" Name="rj"
PasswordPolicy="wl_default_password_policy" Realm="wl_default_realm"/>
<CustomRealm
ConfigurationData="server.host=ldapserver.example.com;membership.scope.depth=1;microsoft.membership.scope=sub;membership.filter=(|(&(memberobject=%M)(objectclass=memberof))(&(groupobject=%M)(objectclass=groupmemberof)));group.dn=ou=Groups, o=ExampleMembershipDir;group.filter=(&(cn=%g)(objectclass=mgroup));server.principal=cn=Administrator, ou=Members, o=ExampleMembershipDir;user.dn=ou=Members, o=ExampleMembershipDir;user.filter=(&(cn=%u)(objectclass=member))"
Name="defaultLDAPRealmForMicrosoftSiteServer"
Notes="This is provided as an example. Before enabling this Realm, you must edit the configuration parameters as appropriate for your environment."
Password="{3DES}aTzgEUdjzAqaEDs0MC2lBQ==" RealmClassName="weblogic.security.ldaprealmv2.LDAPRealm"/>
<JDBCTxDataSource JNDIName="ticket-ds" Name="ticket-ds"
PoolName="ticket-pool" Targets="rj,rj,rj,rj"/>
<Application Deployed="true" Name="DefaultWebApp" Path=".\config\rj\applications">
<WebAppComponent Name="DefaultWebApp" Targets="rj" URI="DefaultWebApp"/>
</Application>
<PasswordPolicy Name="wl_default_password_policy"/>
<JTA Name="rj"/>
<Application Deployed="true" Name="certificate" Path=".\config\rj\applications">
<WebAppComponent Name="certificate" Targets="rj" URI="certificate.war"/>
</Application>
<Realm CachingRealm="ticketCaching Realm"
FileRealm="wl_default_file_realm" Name="wl_default_realm"/>
<CachingRealm BasicRealm="ticketRDBMS Realm" Name="ticketCaching Realm"/>
<JDBCConnectionPool DriverName="COM.cloudscape.core.RmiJdbcDriver"
InitialCapacity="3" MaxCapacity="15" Name="ticket-pool"
Properties="user=portal;password=portal" Targets="rj,rj,rj,rj" URL="jdbc:cloudscape:rmi:d:\\book\\db\\csdb"/>
<DomainLogFilter Name="MyDomain Log Filter" SeverityLevel="64" SubsystemNames="JTA,EJB"/>
<Server DomainLogFilter="MyDomain Log Filter" ListenPort="7001"
Name="rj" NativeIOEnabled="true" StdoutDebugEnabled="true"
StdoutSeverityLevel="64" TransactionLogFilePrefix="config/rj/logs/">
<ExecuteQueue Name="default" ThreadCount="15"/>
<KernelDebug Name="rj"/>
<Log FileName="config/rj/logs/weblogic.log" Name="rj"/>
<ServerStart Name="rj"/>
<ServerDebug Name="rj"/>
<WebServer DefaultWebApp="DefaultWebApp"
LogFileName="./config/rj/logs/access.log"
LoggingEnabled="true" Name="rj"/>
<SSL Enabled="true" ListenPort="7002" Name="rj"
ServerCertificateChainFileName="config/rj/ca.pem"
ServerCertificateFileName="config/rj/democert.pem" ServerKeyFileName="config/rj/demokey.pem"/>
</Server>
<SNMPAgent Name="rj"/>
<ApplicationManager Name="rj"/>
<CustomRealm
ConfigurationData="user.filter=(&(uid=%u)(objectclass=person));user.dn=ou=people, dc=example, dc=com;server.principal=cn=Manager, dc=example, dc=com;membership.filter=(&(uniquemember=%M)(objectclass=groupofuniquenames));group.filter=(&(cn=%g)(objectclass=groupofuniquenames));server.host=ldapserver.example.com;group.dn=ou=groups, dc=example, c=com"
Name="defaultLDAPRealmForOpenLDAPDirectoryServices"
Notes="This is provided as an example. Before enabling this Realm, you must edit the configuration parameters as appropriate for your environment."
Password="{3DES}aTzgEUdjzAqaEDs0MC2lBQ==" RealmClassName="weblogic.security.ldaprealmv2.LDAPRealm"/>
<CustomRealm
ConfigurationData="user.filter=(&(uid=%u)(objectclass=person));user.dn=ou=people, o=beasys.com;server.principal=uid=admin, ou=Administrators, ou=TopologyManagement, o=NetscapeRoot;membership.filter=(&(uniquemember=%M)(objectclass=groupofuniquenames));group.filter=(&(cn=%g)(objectclass=groupofuniquenames));server.host=ldapserver.example.com;group.dn=ou=groups, o=beasys.com"
Name="defaultLDAPRealmForNetscapeDirectoryServer"
Notes="This is provided as an example. Before enabling this Realm, you must edit the configuration parameters as appropriate for your environment."
Password="{3DES}aTzgEUdjzAqaEDs0MC2lBQ==" RealmClassName="weblogic.security.ldaprealmv2.LDAPRealm"/>
<FileRealm Name="wl_default_file_realm"/>
<CustomRealm
ConfigurationData="user.filter=(&(cn=%u)(objectclass=person));user.dn=ou=people, o=example.com;server.principal=cn=admin, o=example.com;membership.filter=(&(member=%M)(objectclass=groupofuniquenames));group.filter=(&(cn=%g)(objectclass=groupofuniquenames));server.host=ldapserver.example.com;server.ssl=true;group.dn=ou=groups, o=example.com"
Name="defaultLDAPRealmForNovellDirectoryServices"
Notes="This is provided as an example. Before enabling this Realm, you must edit the configuration parameters as appropriate for your environment."
Password="{3DES}aTzgEUdjzAqaEDs0MC2lBQ==" RealmClassName="weblogic.security.ldaprealmv2.LDAPRealm"/>
<RDBMSRealm DatabaseDriver="COM.cloudscape.core.RmiJdbcDriver"
DatabaseURL="jdbc:cloudscape:rmi:d:\\book\\db\\csdb"
DatabaseUserName="portal" Name="ticketRDBMS Realm" SchemaProperties="getGroupMembers=SELECT GM_GROUP, GM_MEMBER from groupmembers WHERE GM_GROUP = ?;deleteGroup2=DELETE FROM aclentries WHERE A_PRINCIPAL = ?;deleteGroup1=DELETE FROM groupmembers WHERE GM_GROUP = ?;addGroupMember=INSERT INTO groupmembers VALUES ( ? , ? );getUser=SELECT EMAIL, PASSWORD FROM LOGINS WHERE EMAIL = ?;getPermission=SELECT DISTINCT A_PERMISSION FROM aclentries WHERE A_PERMISSION = ?;deleteUser3=DELETE FROM aclentries WHERE A_PRINCIPAL = ?;getGroupNewStatement=true;deleteUser2=DELETE FROM groupmembers WHERE GM_MEMBER = ?;deleteUser1=DELETE FROM LOGINS WHERE EMAIL = ?;getAcls=SELECT A_NAME, A_PRINCIPAL, A_PERMISSION FROM aclentries ORDER BY A_NAME, A_PRINCIPAL;getUsers=SELECT EMAIL, PASSWORD FROM LOGINS;getGroups=SELECT GM_GROUP, GM_MEMBER FROM groupmembers;getPermissions=SELECT DISTINCT A_PERMISSION FROM aclentries;getAclEntries=SELECT A_NAME, A_PRINCIPAL, A_PERMISSION FROM aclentries WHERE A_NAME = ?
ORDER BY A_PRINCIPAL;newUser=INSERT INTO LOGINS VALUES ( ? , ? );removeGroupMember=DELETE FROM groupmembers WHERE GM_GROUP = ? AND GM_MEMBER = ?"/>
</Domain>--
Developer Relations Engineer
BEA Support

Create A Connection Pool In the ServletContextListener

The Specification says that we should create the connection pool in the ServletContextListener. I have the code for creating a connection pool (see below). How do I create it in the ServletContextListener?
import java.sql.Connection;
import java.sql.SQLException;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;
public class DBConnection
   public static Connection getDBConnection() throws SQLException
      Connection conn = null;
      try
         InitialContext ctx = new InitialContext();
         DataSource ds = ( DataSource ) ctx.lookup( "java:comp/env/jdbc/MySQLDB" );
         try
            conn = ds.getConnection();
         catch( SQLException e )
            System.out.println( "Open connection failure: " + e.getMessage() );
      catch( NamingException nEx )
         nEx.printStackTrace();
      return conn;

I use the connection pool feature provide by the server I use. Is this what I should do? Please confirm.
import java.sql.Connection;
import java.sql.SQLException;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;
import javax.servlet.*;
public class CreateResources implements javax.servlet.ServletContextListener
     public void contextInitialized(ServletContextEvent sce)
          public static Connection getDBConnection() throws SQLException
               Connection conn = null;
               try
                    InitialContext ctx = new InitialContext();
                    DataSource ds = ( DataSource ) ctx.lookup( "java:comp/env/jdbc/MySQLDB" );
                    try
                         conn = ds.getConnection();
                    catch( SQLException e )
                         System.out.println( "Open connection failure: " + e.getMessage() );
              catch( NamingException nEx )
                    nEx.printStackTrace();
              return conn;
     public void contextDestroyed(ServletCotnextEvent sce)
}

Connection pooling oc4j

hi guys,
I have a deployed application in OC4J (oracle 10g). My JSP needs connection pooling to the DB connection . right now i am uisng normal DB connection, which is not feasible for long term process.
I had seen some of the mails/step by step process to implement and create Data soruce and Connection pooling examplesin forum & OTN but those examples and applications[b] which are accessing from outside the server.
can you please provide the link or thread where i can get the example for datasource and connection pooling.

It's always more helpful if you can provide more specific details about the version you are using -- 10g spans multiple releases.
So basically you want to make use of a connection pool from your web app?
The basic solution then is to create a DataSource on the OC4J instance, then lookup the datasource in the JSP and extract a connection from it to use. When you close the connection it will return to the pool maintained by the DataSource.
Worth noting is that the DataSource/ConnectionPool implementation has changed a bit between the 10.1.2 and 10.1.3 releases, although the core principals remain the same.
The documentation covers how to do this:
10.1.2 doc: http://download-west.oracle.com/docs/cd/B14099_19/web.1012/b14012/datasrc.htm#sthref425
10.1.3 doc: http://download-west.oracle.com/docs/cd/B31017_01/web.1013/b28958/datasrc.htm#BABIDCBJ
10.1.3. How-To:
http://www.oracle.com/technology/tech/java/oc4j/1013/howtos/how-to-datasource/doc/how-to-datasource.html
Here's a link to a how-to that walks you through constructing and testing a datasource using the Application Server Control console.
I wrote a blog posting a while back on how to lookup a datasource using the fully abstracted approach:
http://buttso.blogspot.com/2006/06/datasource-lookup-using-javacompenv.html
cheers
-steve-

No connection pool with oracle thin driver

Hi all,
whenever I try to set up my server as target for an Oracle connection pool on OPracle
8.1.7, I get the following exception:
java.sql.SQLException: Illegal Arguments
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:168)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:210)
at oracle.jdbc.dbaccess.DBError.check_error(DBError.java:857)
at oracle.jdbc.ttc7.TTC7Protocol.logon(TTC7Protocol.java:189)
at oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:249)
at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.java:365)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:260)
at weblogic.jdbc.common.internal.ConnectionEnvFactory.makeConnection(ConnectionEnvFactory.java:193)
at weblogic.jdbc.common.internal.ConnectionEnvFactory.createResource(ConnectionEnvFactory.java:134)
at weblogic.common.internal.ResourceAllocator.makeResources(ResourceAllocator.java:698)
at weblogic.common.internal.ResourceAllocator.<init>(ResourceAllocator.java:282)
at weblogic.jdbc.common.internal.ConnectionPool.startup(ConnectionPool.java:623)
The Oracle driver classes12.zip is the very first in my classpath, connection pool
settings are:
<JDBCConnectionPool DriverName="oracle.jdbc.driver.OracleDriver"
Name="Oracle Connection Pool"
Properties="dll=ocijdbc8;USER=zapper;protocol=thin;PASSWORD=oracle"
TestTableName="CABIN" URL="jdbc:oracle:thin:@192.168.0.2:1521:eins"/>
Do I need any additional software besides the driver and weblogic??
Thx
Christian

You're welcome :)
Regards,
Slava Imeshev
"Christian" <[email protected]> wrote in message
news:[email protected]...
>
That worked!
Thx
"Slava Imeshev" <[email protected]> wrote:
Hi Christian,
There is a couple of problems with the pool definition.
First, the connection pool and datasource names can't
contain spaces. Second, USER and PASSWORD
should be in lower case, i.e. user and password accordingly.
Regards,
Slava Imeshev
"Christian" <[email protected]> wrote in message
news:[email protected]...
Hi all,
whenever I try to set up my server as target for an Oracle connectionpool
on OPracle
8.1.7, I get the following exception:
java.sql.SQLException: Illegal Arguments
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:168)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:210)
at oracle.jdbc.dbaccess.DBError.check_error(DBError.java:857)
at oracle.jdbc.ttc7.TTC7Protocol.logon(TTC7Protocol.java:189)
at
oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:249)
atoracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.java:365)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:260)
atweblogic.jdbc.common.internal.ConnectionEnvFactory.makeConnection(Connection
EnvFactory.java:193)
at
weblogic.jdbc.common.internal.ConnectionEnvFactory.createResource(Connection
EnvFactory.java:134)
at
weblogic.common.internal.ResourceAllocator.makeResources(ResourceAllocator.j
ava:698)
at
weblogic.common.internal.ResourceAllocator.<init>(ResourceAllocator.java:282
at
weblogic.jdbc.common.internal.ConnectionPool.startup(ConnectionPool.java:623
The Oracle driver classes12.zip is the very first in my classpath,connection pool
settings are:
<JDBCConnectionPool DriverName="oracle.jdbc.driver.OracleDriver"
Name="Oracle Connection Pool"
Properties="dll=ocijdbc8;USER=zapper;protocol=thin;PASSWORD=oracle"
TestTableName="CABIN" URL="jdbc:oracle:thin:@192.168.0.2:1521:eins"/>
Do I need any additional software besides the driver and weblogic??
Thx
Christian

Creating connection pool on Sun Application Server 8.1

Hi All,
I am trying to create a connection pool for my MySql database on Sun Application Server(Version 8.1) using 'asadmin'. I am also able to create the connection pool successfully but when i am trying to ping the connection pool, it is giving me the java.net.UnknownHostException. The command I am using for creating the connection pool is as follows:
create-jdbc-connection-pool user admin password adminadmin host localhost port 4849 datasourceclassname com.mysql.jdbc.jdbc2.optional.MySqlConnectionPoolDataSource restype javax.sql.XADatasource --property User=root:Password=admin:SelectMethod=Cursor:DatabaseName=testdb:serverName=\"localhost\":portNumber=3306 MyConnectionPool
My database and the application server are running on the same machine.
Has anyone come across such a problem? Any help would be highly appriciated.
Thanks in Advance,
Anurag.

hi Anurag,
Check the properties in the jdbc-connection-pool tag and make sure that the values are populated correctly. You can also try specifying the actual hostname or IP address of the machine instead of localhost and see if that works.
Cheers,
Vasanth

Log file location for FC 3510

Does somebody know whats the default log file location for a FC3510 connected to solaris 8 machine?
thanks.

You need to enable specific logger for the same:
http://identityandaccessmanager.blogspot.com/2011/02/setting-up-log-level-in-oim-11g.html
Loggers:
oracle.iam.request
oracle.iam.requestactions

Connection pool difference in weblogic 8.x and 9.x

Hi All,
Can you please tell me why connection pool has added inside data souce from weblogic version 9.x onwards (as we know weblogic 8.x it was separte) ,recently I have faced this question from interviewer .
Thanks in advance
Balaji kumar
Edited by: user9284716 on 13 Oct, 2010 8:11 AM

1. My guess is for simplifying the config.xml file.
2. Have you worked on both 8.x and 9.x or 10.x WLS versions and Domains? See below notes.
3. In 8.x, under domain we just had huge config.xml file that has all the details of that domain including servers, cluster, managed servers, ConnectionPools, DataSources. Specially we created ConnectionPool that went into one section. Then create one or many Datasources wth different JNDI names that refer to above connection pools etc.
Starting 9.x and 10.x, config.xml file is split into multiple folders, if you have seen. Now under domain root folder, we see a new folder called config. And config folder has lot of sub-folders specially like jdbc. Now jdbc folder is the one having .xml file for each DataSource that you create from weblogic console. Now this .xml file itself have connection pool details also. REMEMBER that you can still have multiple Datasources for the same connection pool and they all still go under same .xml file itself. So indirectly its like one connection pool will have one .xml file and this .xml file itself will have one or many datasources with diff JNDI name that refer to same connection pool. Something like this:
<?xml version="1.0" encoding="UTF-8"?>
<jdbc-data-source xmlns="http://xmlns.oracle.com/weblogic/jdbc-data-source">
<name>portalDataSource</name>
<jdbc-driver-params>
<url>jdbc:pointbase:server://localhost:9093/weblogic_eval</url>
<driver-name>com.pointbase.jdbc.jdbcUniversalDriver</driver-name>
<properties>
<property>
<name>user</name>
<value>WEBLOGIC</value>
</property>
<property>
<name>databaseName</name>
<value>jdbc:pointbase:server://localhost:9093/weblogic_eval</value>
</property>
</properties>
<password-encrypted>{AES}BCjbW4pXK8wCWQ+AESqJd9BDAdmusVFn1tRWdeZFurU=</password-encrypted>
</jdbc-driver-params>
<jdbc-connection-pool-params>
<initial-capacity>5</initial-capacity>
<max-capacity>20</max-capacity>
<test-connections-on-reserve>true</test-connections-on-reserve>
<test-table-name>SQL SELECT COUNT(*) FROM SYSTABLES</test-table-name>
</jdbc-connection-pool-params>
<jdbc-data-source-params>
<jndi-name>weblogic.jdbc.jts.commercePool</jndi-name>
<jndi-name>contentDataSource</jndi-name>
<jndi-name>contentVersioningDataSource</jndi-name>
<jndi-name>portalFrameworkPool</jndi-name>
<global-transactions-protocol>OnePhaseCommit</global-transactions-protocol>
</jdbc-data-source-params>
</jdbc-data-source>
5. Since entire Weblogic Console UI itself is changed from 8.x to 9.x, they have rewritten the way these things are configured and separated into multiple folders. I would say for more simplicity and easy maintenance.
Thanks
Ravi Jegga

Need Help on Connection pooling with asp

Hi,
I am need ur help on how i want set up the minimum and maximum connection for my asp programming.
I am using Oracle 9i database with driver "Oracle in orahome 9.02.00.54".
Ihave create the odbc to this driver for handle the connection pool.
How i want to set the minimum and maximum connection ?
This is my code:
Set cn = Server.CreateObject("ADODB.Connection")
cn. open "dsn=loadtest;uid=guardreg3;pwd=guardreg3;min pool size=15"
I hope you all can help me.
Thanks

James,
sometimes it makes sense to look at these things from a different (and broader) perspective.
Especially in a context of a corporation it makes sense to use a Single Sign On (SSO) server for authentication (usually against LDAP) . Something like Netegrity Siteminder, Oracle SSO Server (as part of Oracle Internet Application Server) or something similar.
Then you could have all your applications use the authentication method of the SSO server which will keep track of the valid session and the applications that participate in the SSO context.
On the Apex side you would have to write a custom authentication scheme to leverage that functionality, the session handling will no longer be of any concern to you.
Just a different way to look at it.
~Dietmar.

Appropriate location for a OLAP connection pool?

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