How to use persistent connections in HTTP on Client Side

I want to Open a Single HTTP Connection and Post Multiple Requests on that connection to the Server. Please give code examples and please tell can i do it with the HttpURLConnection Class.

i think u can do this by creating threads of code that will be sending the requests.

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Now i'm facing a problem:
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Does HttpURLConnection use persistent Connection ?

Hi
Can any one of you know that how to make persistent Connections using HttpURLConnections or how to reuse HttpURLConnection so that i don't need to create a new new connection every time for requested URL ? Let say i am right now connecting with some website using urlobject.openconnection() method. I have configure some request and then read response from that website. Now suppose i want to configure another request to same website, how can i do that? Should i need to create every time new connection with same website using urlobject.openconnection() method or is there any trick by which i can reuse the httpurlconnection ?
How can a client make pipelining request in java? I am using HttpURLConnection class.
Any further comment or suggestions will be appreciated.
Thanks.

Yes. it uses persistent connections by default. It does not support pipelining (many HTTP servers don't support that either).

How to use JDBC Connection Pools in a standalone application?

Hi, there,
I have a question about how to use JDBC Connection Pools in an application. I know well about connection pool itself, but I am not quite sure how to keep the pool management object alive all the time to avoid being destroyed by garbage collection.
for example, at the website: http://www.developer.com/java/other/article.php/626291, there is a simple connection pool implementation. there are three classes:JDBCConnection, the application's gateway to the database; JDBCConnectionImpl, the real class/object to provide connection; and JDBCPool, the management class to manage connection pool composed by JDBCConnectionImpl. JDBCPool is designed by Singleton pattern to make sure only one instance. supposing there is only one client to use connection for many times, I guess it's ok because this client first needs instantiate JDBCPool and JDBCConnectionImpl and then will hold the reference to JDBCPool all the time. but how about many clients want to use this JDBCPool? supposing client1 finishes using JDBCPool and quits, then JDBCPool will be destroyed by garbage collection since there is no reference to it, also all the connections of JDBCConnectionImpl in this pool will be destroyed too. that means the next client needs recreate pool and connections! so my question is that if there is a way to keep pool management instance alive all the time to provide connection to any client at any time. I guess maybe I can set the pool management class as daemon thread to solve this problem, but I am not quite sure. besides, there is some other problems about daemon thread, for example, how to make sure there is only one daemon instance? how to quit it gracefully? because once the whole application quits, the daemon thread also quits by force. in that case, all the connections in the pool won't get chance to close.
I know there is another solution by JNDI if we develop servlet application. Tomcat provides an easy way to setup JNDI database pooling source that is available to JSP and Servlet. but how about a standalone application? I mean there is no JNDI service provider. it seems a good solution to combine Commons DBCP with JNID or Apache's Naming (http://jakarta.apache.org/commons/dbcp/index.html). but still, I don't know how to keep pool management instance alive all the time. once we create a JNDI enviroment or naming, if it will save in the memory automatically all the time? or we must implement it as a daemon thread?
any hint will be great apprieciated!
Sam

To my knoledge the pool management instance stays alive as long as the pool is alive. What you have to figure out is how to keep a reference to it if you need to later access it.

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Hi Guys!
I need to know if for update a report in crystal reports viewer, is necessary, have a connection SAP Business Objects Business Intelligence. How to use a connection ODBC in crystal reports viewer?

Hi Guys!
I need to know if for update a report in crystal reports viewer, is necessary, have a connection SAP Business Objects Business Intelligence. How to use a connection ODBC in crystal reports viewer?

How to use pool connection run oracle procedure?

Hi, All:
          I am facing a difficulty I can not find the solution. Maybe you can help
          me.
          I want to call an oracle stored procedure whenever I talk to datebase to
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          weblogic.jdbc.common.OracleCallableStatement cstmt =
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          cstmt.registerOutParameter(1,java.sql.Types.OTHER);
          cstmt.execute();
          rset = cstmt.getResultSet(1);
          When I run this JSP file, the compilation is fine but the result shows
          nothing. That's means I can not get the ResultSet for some reason.
          The working file when I use oracle thin driver (NOT use a connection pool):
          String userid = (String)session.getAttribute("user.id");
          int subid = Integer.parseInt((String)session.getAttribute("sub.id"));
          String query = "begin pkg_select.sel_req_in_001(" + userid +", " +subid
          +", ?); end ";
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          cstmt.execute();
          ResultSet rset = (ResultSet)cstmt.getObject(1);
          You may notice that I am trying to bind a parameter to an Oracle cursor. Is
          there anything I did wrong in using weblogic API? I just want to let you
          that in the weblogic JSP file, I also tried to use
          weblogic.jdbc.oci.CallableStatement and
          weblogic.jdbc20.oci.CallableStatement instead of
          weblogic.jdbc.common.OracleCallableStatement, but none of them seems work.
          I did check the bea site at
          http://www.weblogic.com/docs51/classdocs/API_joci.html#1080420 for the
          example to use:
          cstmt.registerOutParameter(1,java.sql.Types.OTHER);
          and I think I followed the exact procedure the example did.
          Please help!
          James Lee
          Artificial Intelligence in Medicine, Inc.
          2 Berkeley Street, Suite 403
          Toronto, Ontario M5A 2W3
          Tel: 416-594-9393 ext. 223
          Fax: 416-594-2420
          Email: [email protected]


Joseph
Thanks for the suggestion about latest version of Weblogic Server.
"coding best-practices" is not mentioned in the post.
In order to make servlet application run significantly faster, my servet how to use connection poo is much moreresonable?
It is reasonable to expect servlet to run significantly faster with connection pooling.
Is it true that geting and close a connection whenever
one time database access finished?
Already answered. Applications use a connection from the pool then return it when finished using the connection.
Will the solution affect the servlet performance?
Yes. Already answered. Connection pooling enhances performance by eliminating the costly task of creating database connections for the application.
Is there any official document to introduce connection pool program?
For the latest version
http://download.oracle.com/docs/cd/E17904_01/web.1111/e13726/toc.htm
http://download.oracle.com/docs/cd/E17904_01/web.1111/e13737/jdbc_datasources.htm#insertedID0

How to use single connection

Hello Gurus,
I am new in adf and using jdev 11.1.2.3.
I am developing application in which i am using dynamic shell UI. The structure of application is i have one main application modules with the UI shell. The other modules are developed in separate application and has its own data control and task flows and then i deployed them as adf library. Then i am consuming the task flow in the main application.
As i mention each module has its own data control, so when i open a module it makes new connection with database. It means if i have opened ten modules then it is opening ten connections with database.
Is is possible i can configure somewhere to use single connection for all modules and not to open the connection for each module.
And one more thing if i undeploy the application the connection is still with database as v$session view shows it. How i can close connection if i close the tab in ui shell.
Thanks,

Hi, You can explore the option of nesting your AM. Check below links to know more about them.
Decompiling ADF Binaries: What you may need to know about Nested Application Module
Nested application modules | ADF KickStart
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I have scenario like FIle to file using ftp protocal over secure connection(FTPS).
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kestore (in the list i can see the some entrys for private keys )
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Edited by: katakoti on Jul 7, 2011 7:36 AM

HI Reddy ,
i already read that blog it nice blog. Few my doubts clarfied while reading the that blog.
my quetion is like weathe can we use "service_ssl" key sotre entry for any client FTP server for sending the encrypted files?.
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How long is Persistent connection last?

As long as the content rule is matched, the persistent connection remains in the flow. Can I set the time like the sticky?
For the duration of persistent connection, is it behave the same way as sticky? I'm confused :(
Brad

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How to use a connection across multiple request

What is the idea of using a connection across multiple requests.

Please give more details. What connections and what requests
And are you posting on the right forum? (This sounds more like a Networking/servlet question)

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I want to use form9i connect to MS Sqlserver.
I try to use this to test connect.
=========================================
declare
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Hi,
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this is the issue:
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Still puzzling on that issue. Will come back when completely solved. /hs
OK, gurus, expertz and those to be, here's the story:
BI 7.0 component of SCM-APO (Oracle 10.2.) is successfully connected to remote Oracle 9.2.
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Message was edited by:
Harald Schwenger

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How to use persistent connections in HTTP on Client Side

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