How to close RFC connections

The RFC connections to the R/3 backend system are not closed when I close my iviews which are created in the Visual Composer. Each time the iview is reloaded, an additional RFC connection is opened...
Has someone a solution for this problem?
Kind regards
Frank

Hi Frank,
The connector pool keep the connection alive to be reused by the model iViews datasource, those connections will be closed at the timeout or when CLEANUP runs.
It's not a problem is the way how the connector framework works
You can adapt the timeout according SAP Notes 913483 & 314530
Best Regards, Luis

Similar Messages

How to close RFC connection in one script coding

In one script, I am using the REF command to call another 2 scripts and these called scripts shd be run on same C36 ( test system). I shd close RFC connection between these 2 scripts.
That is , once the 1s script over the RFC shd be closed and the user has to give usename and pwd then 2nd script shd run.
I have tried with the following code. But it says RFC is not open
REF ( Y04S_FC_RM_CJ88_112 , Y04S_FC_RM_CJ88_1 , C36_999 ).   (when execute this script RFC to C36 will be created and after execution that RFC shd be closed so I included following ABAP code)
ABAP.
data : dest type RFCDEST.
move 'S4_SAPC36999' to dest.
move dest to v_dest.
*--Close the connection before opening it incase it is opened
          call function 'RFC_CONNECTION_CLOSE'
               exporting
                    destination          = dest
               exceptions
                    destination_not_open = 1
                    others               = 2.
          if sy-subrc <> 0.
          endif.
          move sy-subrc to v_subrc.
ENDABAP.
REF ( Y04S_FC_RM_CJ44_112 , Y04S_FC_RM_CJ44_1 , C36_999 ). (here agagin the RFC will be created and this script will be exectued.)

In one script, I am using the REF command to call another 2 scripts and these called scripts shd be run on same C36 ( test system). I shd close RFC connection between these 2 scripts.
That is , once the 1s script over the RFC shd be closed and the user has to give usename and pwd then 2nd script shd run.
I have tried with the following code. But it says RFC is not open
REF ( Y04S_FC_RM_CJ88_112 , Y04S_FC_RM_CJ88_1 , C36_999 ).   (when execute this script RFC to C36 will be created and after execution that RFC shd be closed so I included following ABAP code)
ABAP.
data : dest type RFCDEST.
move 'S4_SAPC36999' to dest.
move dest to v_dest.
*--Close the connection before opening it incase it is opened
          call function 'RFC_CONNECTION_CLOSE'
               exporting
                    destination          = dest
               exceptions
                    destination_not_open = 1
                    others               = 2.
          if sy-subrc <> 0.
          endif.
          move sy-subrc to v_subrc.
ENDABAP.
REF ( Y04S_FC_RM_CJ44_112 , Y04S_FC_RM_CJ44_1 , C36_999 ). (here agagin the RFC will be created and this script will be exectued.)

Open and close RFC connection with portals...

Hi Experts,
I created a RFC having a query which is taking a long time to execute. So i want to close RFC connection with portals which is via java connector(JCO) before that query and open the connction again after that query.
Please advice is it possible to achieve this. If yes, then how.
Regards,
Guddan

Hi Guddan,
I created a RFC having a query which is taking a long time to execute. So i want to close RFC connection with portals which is via java connector(JCO) before that query and open the connction again after that query.
I guess i will need to understand your requirement a little more in detail, as i understand you have an RFC which has a query within to fetch some data and is taking a long time to do so. In the meantime you don't want to keep the connection open?
My question would be, Is the role of this RFC to only execute the query and fetch the data or does it do something else?
If it does other things and these are independent of the query execution, then you can span a parallel call within the RFC to execute the query and in the meantime the RFC does the other things (or vice versa) hence reducing the overall time taken.
If the sole purpose of this RFC is to execute the query, then you will not be able(i mean to say there is no simple and direct way of doing this) to close the connection after the Query is started and re-establish the connection after its execution, for a simple reason that - how will you know if the query has completed it's execution, so that you can establish the connection back.
Alternate solutions, make this a two way asynchronous call, 1) You invoke the RFC asynchronously and close the connection, the RFC in turn will execute the query and transfer the data to JCO via another RFC call.
If this needs to be a synchronous call, then you will need to optimize the query to its best.
Regards,
Chen

When and How to close database connection in JSP?

Hi there,
I am using MySQL and JDBC 3.0, in my system, When and How to close database connection in JSP?
Thanks in advance.
Lonely Wolf
<%@ page session="true" language="java" %>
<jsp:include page="checkauthorization.jsp" />
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
<%@ taglib prefix="sql" uri="http://java.sun.com/jstl/sql" %>
<%--
Execute query, with wildcard characters added to the
parameter values used in the search criteria
--%>
<sql:query var="availablecomputerList" dataSource="jdbc/Bookingcomputer" scope="request">
SELECT * FROM computer where status=0
order by s_code
</sql:query>
<html>
<head>
<title>Search Result</title>
</head>
<body bgcolor="white">
<center>
<form action="checkin.jsp" method="post">
<input type="submit" value="Back to Check-in Page">
</form>
<c:choose>
<c:when test="${availablecomputerList.rowCount == 0}">
Sorry, no available computer found.
</c:when>
<c:otherwise>
The following available computers were found:
<table border="1">
<th>Computer</th>
<th>Description</th>
<th>Status</th>
<c:forEach items="${availablecomputerList.rows}" var="row">
<tr>
<td><c:out value="${row.s_code}" /></td>
<td><c:out value="${row.description}" /></td>
<td><c:out value="${row.status}" /></td>
</tr>
</c:forEach>
</table>
</c:otherwise>
</c:choose>
</center>
</body>
</html>

when should you close the connection? when you're done with it.
how should you close the connection? like this: conn.close();
that said, doing this in a JSP page is bad form and not recommended
JSP's typically don't contain ANY business or data logic

Need to close RFC connection

Hi all,
Currently we developed a application in NWDS, the same is operational from portal.
As per the requirment we have to run the RFC many times to extract the data from R/3. After running the RFC many times
we are getting the following Error "Error connecting using JCO.client: null"
But if we redeploy the application the problem is solved but after a while the same issue is persisting.
Please suggest how the problem can be solved ??
Thanks,
vijay.

Hi venkat,
Thanks for the example suggested by you.
The following is the RFC iam executing many times.
Z_Hr_Aprsl_Init_Input input= new Z_Hr_Aprsl_Init_Input();
input.setI_Usrid("UserId");
wdContext.nodeZ_Hr_Aprsl_Init_Input_new().bind(input);
wdContext.nodeZ_Hr_Aprsl_Init_Input().currentZ_Hr_Aprsl_Init_InputElement().modelObject().execute();
the code iam using to close the connection is
JCO.Client client = JCO.getClient(" "); // Please specify the parameter to be used to refer the above RFC
client.disconnect();
Please suggest the required the parameter to close the RFC connection
Thanks
vijay

How to close database connections in Crystal Reports

I am using the following code to connect to database. I can either pass JNDIName or I can provide values for others by leaving JNDI name empty.
If i use JNDI name, it will use a connection from the connection pool of App Server (in my case Weblogic), but it is not releasing the connection after use. Connection remains even if I logoff from the application. If i keep my max connections as 15 in weblogic, after clicking the page with crystal report 15 times all will remain active and users will not be able to login to the application.
If i use connectionString and others without using JNDI Name, it directly connects to database. So it creates a connection in database server directly without using connection pool of weblogic. If i check weblogic, it shows no connection in use as expected, but if i check database, i can see the no. of connections increasing everytime a user clicks a crystal report page.
When the connection touches the maximum allowed connection in server, every application using the same server goes down
How can I close the connection which was created for the viewing the report?
String reportName = "/reports/BankBalance.rpt";
ReportClientDocument clientDoc = (ReportClientDocument) session.getAttribute(reportName);
if (clientDoc == null)
         clientDoc = new ReportClientDocument();
         clientDoc.setReportAppServer(ReportClientDocument.inprocConnectionString);
        // Open report
        clientDoc.open(reportName, OpenReportOptions._openAsReadOnly);
       String connectString = ""; // jdbc:sybase:Tds:DBSERVERNAME:9812/DBNAME?ServiceName=DBNAME
       String driverName = "";    // com.sybase.jdbc3.jdbc.SybDriver
       String JNDIName = "DS_APP";
       String userName = "";
       String password = "";
       // Switch all tables on the main report and sub reports
       CRJavaHelper.changeDataSource(clientDoc, userName, password, connectString, driverName, JNDIName);
     // logon to database
      CRJavaHelper.logonDataSource(clientDoc, userName, password);
// Store the report document in session
session.setAttribute(reportName, clientDoc);
               // Create the CrystalReportViewer object
                      CrystalReportViewer crystalReportPageViewer = new CrystalReportViewer();
     String reportSourceSessionKey = reportName+"ReportSource";
     Object reportSource = session.getAttribute(reportSourceSessionKey);
     if (reportSource == null)
          reportSource = clientDoc.getReportSource();
          session.setAttribute(reportSourceSessionKey, reportSource);
     //     set the reportsource property of the viewer
     crystalReportPageViewer.setReportSource(reportSource);
     crystalReportPageViewer.setHasRefreshButton(true);
     crystalReportPageViewer.setToolPanelViewType(CrToolPanelViewTypeEnum.none);
     // Process the report
     crystalReportPageViewer.processHttpRequest(request, response, application, null);

the sample shows how to clear RAS and Enterprise resources after viewing report.
1. If you use unmanaged RAS - as I can see you using setReportAppServer, then remove the enterprise related stuff : instantiating and cleaning code.
The sample code is meant to give you an idea on how you can release the resources after done with viewing report. In your case all you need to do for cleaning is call close() on ReportDocumentObject. The sample will need to be modified for your requirements.

How to Alert RFC connection failure via message mapping? Kindly Help!

Hi Experts,
    I have a JMS - XI - RFC scenario.
JMS receives the Rosattenet PIP contents and sends it to RFC function module in remote SAP R/3 system.
   I have a requirement where I have to monitor RFC connection failure because of the remote R/3 system being down. I have to send a email alert where the subject contains the PIP number to understand for which PIP the connection failed.
The PIP number exists in the PIP content at the interface.
If I use the Alert configuration in the runtime workbench for monitoring then I cannot dynamically pass the PIP number.
Only way I think of triggering alert is in the message mapping via a Java UDF.
But I am not sure how can I do this? How do I check in the UDF if RFC connection has failed? Is this the correct approach?
How to acheive my requirement? Note that my email subject content is dynamic bacause if PIP number.
Please help!
Thanks
Gopal
Message was edited by:
        gopalkrishna baliga

Hi Gopal,
what version/sps of XI are u running?
The easiest way to do what u want inside a UDF is to
1. use JCo to try estabilish a connection to the remote SAP System
2. if that fails, use JavaMail to send an email message
Let your UDF work on the PIP number, accepting it as input, and (maybe) returning it as output if everything goes ok. Otherwise break the mapping execution as described by Michal in one of his last weblog (using Dynamic Configuration).
Note that the above method doesn't guarantee that the message will be actually delivered, as some seconds could last between your check and the real RFC delivery operated by the Adapter Engine...
I am evaluating a way to do the same with Alert Framework. I will let you know the result!
Cheers,
Alex

Close RFC Connection

Hi,
I have some problems with the availibility of my WebDynpro-Application. It seems to be, that to much connections are opened at the same time. Is it necessary to close the connection in the code or should it closed by the system automatically?
To use a model I use the following code(example):
wdContext.nodeZ_Rfc_GetData_Input().bind(new Z_Rfc_GetData_Input());
wdContext.currentZ_Rfc_GetData_InputElement().modelObject().execute();
wdContext.nodeOutput().invalidate();
I don't know if there is a option to close the connection.

Hi,
Use below code:
wdContext.currentRFC_InputElement().modelObject().modelInstance().disconnectIfAlive();
Please check below forum ,
webdynpro JCO - RFC Connections are not closing in back end ECC (SM51)
Regards
Deepak

How to debug RFC connection using RfcOpenEx?

Hi,
I use COOPC1 to test a RFC connection and this transaction uses RfcOpenEx which fails.
How can I debug this connection?
Best regards
Marty

Hi,
in fact the conection from SAP to the destination works using SM59. but the system reply with a connection using RfcOpenEx but this function fails because there is a mixup with the parameters maybe a wrong type.
I will try to debug from the tcode COOPC1 when I start a subscription.
Thanks
Marty

How to close timeout connection in SQLDBC ?

Hello,
I use SQLDBC to access MAXDB 7.7.0.7.16 database, i have the following issue :
When a connection reach timeout, I close the connection, and the release the connexion, and then I create a new connection
To close connection I call my Disconnect function
                    The call close method return "Not connected", but It seems that the underlying Socket is not closed and the Database user task is not closed.
So the number of task grow until it reach the maximun.
Where is my error ?
How can I be sure to close the database user task ?
IDBError CMaxDBConnection::Disconnect()
     IDBError hr;
     if (m_pConnection)
          EDPTRACE_DBG_INF(L"CMaxDBConnection::Disconnect %1", EDPMASK_TRC_CONNECTIONS) << (DWORD)m_pConnection;
          SQLDBC_Retcode rc = m_pConnection->close();
          if (SQLDBC_OK != rc)
               hr = convertError(rc, m_pConnection->error(), L"CMaxDBConnection::Disconnect");
          m_pParent->m_pEnvironment->releaseConnection(m_pConnection);
          m_pConnection = NULL;
     return hr;
Regards
Yann

MAXDB 7.7.07.16 (WINDOWS 2008 R2 (64 bits) Client program in 32bits.
Hello
I have code a small program to illustrate my issue.
When I create a connection with SQLDBC it create 2 user tasks in the MAXDB task Manager
One uer task APPPLICATION SERVER, SESSION TIMOUT, ... filled.
T425 10 0x16AC User      2688* Command wait        823 0            76 20691065(s)
and One User task with no session tiemout.
T111   8 0x15B8 User       2688 Command wait       3009 0            76 24900501(s)
T111                  USER             ( pid = 2688       ) -
dispatcher_cnt: 2                                     command_cnt   : 2
exclusive_cnt : 30                                    self_susp_cnt : 0
state_vwait   : 0          state_vsleep : 0          state_vsusp   : 0
same_ukt_coll : 0
when I close the connection the task T111 is never remove !!
Do you have any idea ?
I try to delete environment but It does not work.
Regards
Yann.
Here is the code :
// SQLDBC.cpp : Defines the entry point for the console application.
#include "stdafx.h"
#include "SQLDBC.h"
using namespace SQLDBC;
static void parseArgs(int argc, wchar_t **argv);
static SQLDBC_Connection *connectDB();
SQLDBC_Environment *g_env;
typedef struct ConnectArgsT {
bstrt username;
bstrt password;
bstrt dbname;
bstrt host;
bstrt request;
} ConnectArgsT;
ConnectArgsT connectArgs;
void exitOnError(SQLDBC_ErrorHndl &err);
int _tmain(int argc, _TCHAR* argv[])
     SQLDBC_Retcode ret;
   parseArgs(argc, argv);
   for (int j = 0 ; j < 10 ; ++j)
        for (int i = 0 ; i < 100 ; ++ i)
             SQLDBC_Connection *conn = connectDB();
             ret = conn->close();
             ret = conn->disconnect();
             g_env->releaseConnection(conn);
        delete g_env;
        g_env = NULL;
   return 0;
SQLDBC_Connection *connectDB()
char errorText[200];
SQLDBC_Retcode rc;
if (g_env == NULL)
Every application has to initialize the SQLDBC library by getting a
reference to the ClientRuntime and calling the SQLDBC_Environment constructor.
       SQLDBC_IRuntime *runtime;
       runtime = SQLDBC::GetClientRuntime(errorText, sizeof(errorText));
       if (!runtime) {
          fprintf(stderr, "Getting instance of the ClientRuntime failed %s\n", errorText);
       g_env = new SQLDBC_Environment(runtime);
Create a new connection object and open a session to the database.
SQLDBC_Connection *conn = g_env->createConnection();
printf("Connecting to '%s' on '%s' as user '%s'\n",
         (char)connectArgs.dbname, (char)connectArgs.host, (char*)connectArgs.username);
rc = conn->connect(connectArgs.host, connectArgs.dbname,
                     connectArgs.username, connectArgs.password);
if(SQLDBC_OK != rc) {
    fprintf(stderr, "Can't connect to '%s'.\nERROR: %d:'%s'\n",
            connectArgs.dbname, conn->error().getErrorCode(), conn->error().getErrorText());
    exit(1);
     conn->setAutoCommit(SQLDBC_TRUE);
return conn;
static void parseArgs (int argc, wchar_t **argv)
connectArgs.username = "ESKDBADM";
connectArgs.password = "DELORME";
connectArgs.dbname = "EDP350";
connectArgs.host = "ly-delorme";
void exitOnError(SQLDBC_ErrorHndl &err)
if(err) {
    fprintf(stderr, "Execution stopped %d:'%s'", err.getErrorCode(), err.getErrorText());
    //exit(1);
Yann.

How to setup RFC Connection for SAPOSS?

Dear Experts,
I tried to setup the RFC connection for SAPOSS based on the following settings, but when I test connection, it failed.
Target system : OSS
Msg. Server : ... ( this where I stuck which I'm not sure what to fill in)
Group : EWA
Client : 001
User : OSS_RFC
Password : CPIC
Does anyone know the right settings?
Regards,
Abraham

Hi all,
Do I really need to setup our own SAProuter if our firewall doesn't block any outbound IP address?
I've tried the following settings in OSS1 but still failed to connect.
SAProuter at SAP :-
Name : sapserv3 ( or sapserv7 or sapserv2)
IP address : 147.204.2.5 (or 194.39.134.35 or 194.39.131.34)
Instance no : 99
SAPNet Message Server
Name : oss001
DB Name : 001
Instance No : 01
I left the SAProuter1 and SAProuter2 (at customer site) blank.
Did I miss out anything?

How to solved RFC connection (EarlyWatch)

Hi,
I having problem in Solution Manager 4.0 (EarlyWatch Report)
R/3 landscape (NDV,NQA,NPR)
NDV and NPR does works fine and getting EWA everyweek which is schedule every week
NQA does not work at all
Screenshot here:
http://www.flickr.com/photos/25222280@N03/2586790185/sizes/o/
1. I check RFC connection in solution manager (sdccn)
Selected NQA, and click RFC button
Login NQA tr: sdccn --> taskLog --> from menu GOTO --> setting --> Processor task
Checkhosts then double click (RFC destination) I got error: "no host fulfils the requirements of service data control center"
Is there any problem please let me know
Screenshot here:
http://www.flickr.com/photos/25222280@N03/2586794197/sizes/o/
2. Goto SM59 --> under R/3 connection --> check connection "SM_NSMCLIENT100_BACK" does works fine...
screenshot here:
http://www.flickr.com/photos/25222280@N03/2586794219/sizes/o/
Question: please let me know where and what i am missing or wrong ?
Thanks in Advanced

Hi Issue,
These can solved in two ways.
1. You dont need an trusted RFC for EWA. You can get the reports w/o TRUSTED. if you really need this, then follow option 2.
2. Add S_RFC & S_RFCACL autorization objects to your ID in both systems. Solman & Target system.
This will solve your issue.
Thanks,

How to find rfc connection exist between R/3 and APO ?

Hi all,
i wanted to find out...
rfc connection exist between R/3 and APO ?
kindly help in this regard..
Thanks
Joshi

Hi Sridhar,
If u have access to SM59 transaction then u can check and test the connection there it self.
If u don't have access then check the table RFCDES where all RFC destinatios defined for your system is stored.
Thanks,
Vinod.

Crystal Reports's JRC. How to close JDBC connection?

Hi!
I have simple CR JRC application under Oracle AS 10.1.2.0.2, made from Crystal's sample codes.
It works fine, but there is little problem: after closing vievwer's page JDBC connections stays alive.
How can I close them?
Here is my 2 jsp:
---------- Page1.jsp -----------------
"<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<%@page import="com.crystaldecisions.reports.sdk.*" %>
<%@page import="com.crystaldecisions.sdk.occa.report.lib.*" %>
<%@page import="com.crystaldecisions.report.web.viewer.*"%>
<%
// open the report rpt file
String REPORT_NAME = "directs_q_d1.rpt";
String Login =request.getParameter("p1");
String Password =request.getParameter("p2");
ReportClientDocument reportClientDoc = new ReportClientDocument();
reportClientDoc.open(REPORT_NAME, 0);
reportClientDoc.getDatabaseController().logon(Login,Password);
ParameterFieldController paramFieldController = reportClientDoc.getDataDefController().getParameterFieldController();
paramFieldController.setCurrentValue("", "reportname", new String("DIRECTS_QUARTERLY"));
session.setAttribute("reportSource", reportClientDoc.getReportSource());
reportClientDoc.close();
response.sendRedirect("CrystalReportViewer.jsp");
%>
and
----------- CrystalReportViewer.jsp ------------------------
<%//Crystal Report Viewer imports.%>
<%@page import="com.crystaldecisions.report.web.viewer.*"%>
<%@page import="com.crystaldecisions.reports.sdk.*" %>
<%
//Refer to the Viewers SDK in the Java Developer Documentation for more information on using the CrystalReportViewer
//API.
CrystalReportViewer viewer = new CrystalReportViewer();
viewer.setOwnPage(true);
viewer.setOwnForm(true);
viewer.setPrintMode(CrPrintMode.ACTIVEX);
viewer.setHasRefreshButton(false);
viewer.setEnableDrillDown(false);
viewer.setDisplayGroupTree(false);
viewer.setHasToggleGroupTreeButton(false);
viewer.setHasViewList(false);
viewer.setHasLogo(false);
//Get the report source object that this viewer will be displaying.
Object reportSource = session.getAttribute("reportSource");
viewer.setReportSource(reportSource);
//Render the report.
viewer.processHttpRequest(request, response, getServletConfig().getServletContext(), out);
viewer.dispose();
%>
-------------------------------------

Oh, i'm sorry :) It was a "time-out" tag in CRconfig.xml. Tipic closed.

How to close ORMI connections after EJB lookup?

I am using an InitialContext to look up my EJBs, like this:
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, "oracle.j2ee.rmi.RMIInitialContextFactory");
env.put(Context.PROVIDER_URL, "ormi://localhost:23891/current-workspace-app");
env.put(Context.SECURITY_PRINCIPAL, username);
env.put(Context.SECURITY_CREDENTIALS, password);
ic = new InitialContext(env);
beanHome = (EJBHome)ic.lookup(beanHomeName);
ic.close();I have been testing this on JDeveloper 10.1.3 and the embedded OC4J.
This code gave me the problem that the user's credentials were only retireved once while the OC4J instance was alive. So if a user's permissions were changed, they would not be updated for EJB access.
I then found this document: Excessive ORMI Connections Created, which gave me a clue to use env.put("oracle.j2ee.rmi.loadBalance", "context");
However, I am concerned with the other part of that release note which states:
"Closing the context does not cause the connection to be closed. Doing this repeatedly will result in performance degredation."
Does anyone know how to forcibly close the ORMI connection that is created, or whether it will be released automatically?

the sample shows how to clear RAS and Enterprise resources after viewing report.
1. If you use unmanaged RAS - as I can see you using setReportAppServer, then remove the enterprise related stuff : instantiating and cleaning code.
The sample code is meant to give you an idea on how you can release the resources after done with viewing report. In your case all you need to do for cleaning is call close() on ReportDocumentObject. The sample will need to be modified for your requirements.

How to close RFC connections

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