Killing a Database connection..!

Hi,
Iam using Java1.3.1 and Oracle8.1.7 as my database.I used Connectionpooling in my JSP application,It worked fine.I did some mistake(changed min_dbconnections value)and found the Database connection is still active in my Oracle database even after i closed my JSP application.
My question is.,
1)How can i close that connection?
2)Is it possible to close without doing anything directly on Oracle?
3)Can i close the connection,if i restart my Tomcat?
4)Is there anything todo on Tomcat to implement Connectionpooling?
There is noting wrong in the Connectionpooling program(Iam using DbConnectionBroker program to implement my pooling)
Any help will be appreciated..
Regards
Rao

Hi vidya,
Iam using the same program.So,you can use that.After running the servlet program for 4 to 5 times,Can you please also see on your Oracle database(SQL prompt)whether is there there any connection in active state.
Pls check your number of database connections opened(or Active)before and after executing your servlet.
In my case,I got my database connections(2) are still in active state(opened/not killed) even when i terminate the Servlet program.
pls let me know if you didnt understand....,
regards
Rao

Similar Messages

Timeout: Tuxedo kills the service but not the database connection

Hi all,
I am experiencing some performance problems on my system due an efficient SQL and a Tuxedo improper timeout handling.
A service is using a "problematic" SQL (we will tune it but it's not the main problem). After 60 seconds from the execution, Tuxido kills the services for a timeout.
At this point I would like Tuxedo to notify DB2 database as well in order to stop processing the SQL. Instead the SQL continues running on the database (also if the service is killed) and this produce a gradual slow down of the performances.
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Thanks in advance,
Benedetto

Hi Benedetto.
First of all, Tuxedo doesn't kill services, it kills servers. Your UBBCONFIG file specifies three timeouts, BLOCKTIME, SVCTIMEOUT, and TRANTIME.
BLOCKTIME specifies how long a Tuxedo API that needs a response will wait for that response. If the response isn't received in that period of time, Tuxedo will return TPETIME to the caller. As with any failure, if the request was part of a transaction, the transaction is marked rollback only. Note, this timeout does not affect the request, whether sitting in a server's IPC queue or currently executing in a server.
SVCTIMEOUT is a much more severe timeout and determines how long Tuxedo will allow a service implementation to execute. If a service implementation doesn't reply within the SVCTIMEOUT period, Tuxedo will issue an OS level KILL request to kill the process. If the server is marked restartable, Tuxedo will then try to restart the server assuming none of the restart limits have been reached. Killing the server causes the request to be lost within the server so the caller will stay blocked until BLOCKTIME is reached at which point the above actions will take place.
TRANTIME is the amount of time Tuxedo allows a transaction to remain active and viable. When this period expires, Tuxedo will mark the transaction as timed out with the only option being rollback. As well, Tuxedo aborts any API requests that would normally cause messaging to occur, i.e., making a tpcall() within a timed out transaction will fail without any attempt to call the service.
So in your case, the issue is partially that you have the values of your timeouts in somewhat reverse order. Typically we see BLOCKTIME being the smallest value, with TRANTIME typically larger than BLOCKTIME, and SVCTIMEOUT larger even still, although there are good reasons for exceptions to this guideline. Part of the reasoning behind this is that killing a server is a significant thing and its usually best to try and let the server complete whatever its doing, if if the work has been timed out either due to BLOCKTIME or TRANTIME, since the cost of killing and restarting a server is significant.
Tuxedo will notify the database of the transaction status when the application finally issues a tpcommit() or a tpabort() request, but not until then. Although, if SVCTIMEOUT is hit, then killing the server should cause the database connection to be lot.
If you could describe the behavior you are seeing and the relevant portions of your ULOG we can try to make some sense of what is happening.
Regards,
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Oracle Tuxedo Chief Architect

How can I kill database connections

I would like to know how can I kill all the database connexion at the end of an application. I'm using acces
thx

use con.close() in a finally statement after your catch blocks that tests whether con equals null. If con != null, then con.close();
example:
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}

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Hi Chen,
This is just a suggestion for something to try -- only if you haven't
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Maybe this error is related?
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Would be great to access the database connection dialog.

The specific error you have listed is related to versioning support - do you use this? If not, then I would suggest switching off versioning support in the preferences (Tools > Preferences > Extensions) and trying again.
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theFurryOne

Change database connection in SQL-Worksheet to a not connected db

Hi,
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Hi Matthias,
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Edited by: Gary Graham on Aug 23, 2012 4:26 PM
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JDev TP4 - Test Database Connection without password

Hi,
I create a new database connection for an application,
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If Save Password on the create database connection is checked and an empty password is given pressing Test Connection button, "Test failed: Password cannot be null or empty" error message is given.
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regards,
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Bahar,
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(IMP)Application module and database connection

Hi,
How application module pooling and database connection pooling is working ?
Currently i m facing a problem like if i am creating 10 browser session then it doesn't mean that i'll have only 10 db sessions. While closing the browser session of application module time out respective db session is not removed.
In this case, invalid db session are created in bulk which is crashing database sometime. We have writter script to kill those session periodically but in this case if application module is accessing such dbconnection then we are getting session killed error or not logged in error.
To over come we need to bounce the server (middle tier).
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Thanks in advance
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Thanks for your prompt reply Ricky.
I just found out that in some of the JSP pages in application
<jbo:ReleasePageResources/> is not written. Should this problem arise because of this?
could you please tell me how can I release page resources in UIX pages ?
Datasources.xml file content
<data-source class="com.evermind.sql.DriverManagerDataSource"
name="AITDS"
location="jdbc/AITCoreDS"
pooled-location="jdbc/pooled/AITPDS"
xa-location="jdbc/xa/AITXADS"
ejb-location="jdbc/AITDS"
connection-driver="oracle.jdbc.driver.OracleDriver"
username=<USERNAME>
password=<PASSWORD>
url=<URL>
inactivity-timeout="30"
/>
bc4j.xcfg file
<BC4JConfig>
<AppModuleConfigBag>
<AppModuleConfig name="GsaServerModuleLocal">
<DeployPlatform>LOCAL</DeployPlatform>
<JDBCDataSource>jdbc/AITCoreDS</JDBCDataSource>
<jbo.project>gsa</jbo.project>
<AppModuleJndiName>oracle.appsit.gsa.server.GsaServerModule</AppModuleJndiName>
<java.naming.factory.initial>oracle.jbo.common.JboInitialContextFactory</java.naming.factory.initial>
<ApplicationName>oracle.appsit.gsa.server.GsaServerModule</ApplicationName>
</AppModuleConfig>
</AppModuleConfigBag>
</BC4JConfig>
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Installation problem with NW'04 SR1: database connection failed

Hi all,
while installing NW '04 SR1 on Windows Server 2003 SP1 and MS SQL Server 2000 SP4 I ran into an error related to the database connection. While performing the step "Load Java Database content" SAPinst crashes with the message
com.sap.sql.log.OpenSQLException: Could not load class com.ddtek.jdbc.sqlserver.SQLServerDriver.
The connection to the SLQ Server with e.g. the Query Analyzer is OK. I had a problem with this installation setup before (have a look at the corresponding <a href="https://forums.sdn.sap.com/thread.jspa?threadID=338638&tstart=0">thread</a> ), the JDBC drivers where missing on the installation master but after copying them in the right direction the installation went on with no problem up to this point...
Has anybody an idea what could have happened here? Is this maybe a problem connected to the one I recently had
Below I attached the sapinst.log and jload.log with more detailed messages.
sapinst.log ###########
INFO 2007-03-12 22:06:24
Working directory changed to C:\PROGRA1\SAPINS1\NW04SR1\WEBAS_~1\ONE_HOST.
INFO 2007-03-12 22:06:24
Output of D:\Java/bin/java.exe '-classpath' './sharedlib/antlr.jar;./sharedlib/exception.jar;./sharedlib/jddi.jar;./sharedlib/jload.jar;./sharedlib/logging.jar;./sharedlib/offlineconfiguration.jar;./sharedlib/opensqlsta.jar;./sharedlib/tc_sec_secstorefs.jar;D:\usr\sap/WPT/JC10/j2ee\jdbc\base.jar;D:\usr\sap/WPT/JC10/j2ee\jdbc\util.jar;D:\usr\sap/WPT/JC10/j2ee\jdbc\sqlserver.jar;D:\usr\sap/WPT/JC10/j2ee\jdbc\spy.jar;D:/usr/sap/WPT/SYS/global/security/lib/tools/iaik_jce_export.jar;D:/usr/sap/WPT/SYS/global/security/lib/tools/iaik_jsse.jar;D:/usr/sap/WPT/SYS/global/security/lib/tools/iaik_smime.jar;D:/usr/sap/WPT/SYS/global/security/lib/tools/iaik_ssl.jar;D:/usr/sap/WPT/SYS/global/security/lib/tools/w3c_http.jar' '-showversion' '-Xmx512m' 'com.sap.inst.jload.Jload' '-sec' 'WPT,jdbc/pool/WPT,D:\usr\sap\WPT\SYS\global/security/data/SecStore.properties,D:\usr\sap\WPT\SYS\global/security/data/SecStore.key' '-dataDir' 'S:/D51030724\J2EE_OSINDEP\J2EE-ENG/JDMP' '-job' 'C:\PROGRA1\SAPINS1\NW04SR1\WEBAS_1\ONE_HOST/IMPORT.XML' '-log' 'C:\PROGRA1\SAPINS1\NW04SR1\WEBAS_1\ONE_HOST/jload.log' is written to the logfile C:\PROGRA1\SAPINS1\NW04SR1\WEBAS_~1\ONE_HOST/jload.java.log.
WARNING 2007-03-12 22:06:26
Execution of the command "D:\Java/bin/java.exe '-classpath' './sharedlib/antlr.jar;./sharedlib/exception.jar;./sharedlib/jddi.jar;./sharedlib/jload.jar;./sharedlib/logging.jar;./sharedlib/offlineconfiguration.jar;./sharedlib/opensqlsta.jar;./sharedlib/tc_sec_secstorefs.jar;D:\usr\sap/WPT/JC10/j2ee\jdbc\base.jar;D:\usr\sap/WPT/JC10/j2ee\jdbc\util.jar;D:\usr\sap/WPT/JC10/j2ee\jdbc\sqlserver.jar;D:\usr\sap/WPT/JC10/j2ee\jdbc\spy.jar;D:/usr/sap/WPT/SYS/global/security/lib/tools/iaik_jce_export.jar;D:/usr/sap/WPT/SYS/global/security/lib/tools/iaik_jsse.jar;D:/usr/sap/WPT/SYS/global/security/lib/tools/iaik_smime.jar;D:/usr/sap/WPT/SYS/global/security/lib/tools/iaik_ssl.jar;D:/usr/sap/WPT/SYS/global/security/lib/tools/w3c_http.jar' '-showversion' '-Xmx512m' 'com.sap.inst.jload.Jload' '-sec' 'WPT,jdbc/pool/WPT,D:\usr\sap\WPT\SYS\global/security/data/SecStore.properties,D:\usr\sap\WPT\SYS\global/security/data/SecStore.key' '-dataDir' 'S:/D51030724\J2EE_OSINDEP\J2EE-ENG/JDMP' '-job' 'C:\PROGRA1\SAPINS1\NW04SR1\WEBAS_1\ONE_HOST/IMPORT.XML' '-log' 'C:\PROGRA1\SAPINS1\NW04SR1\WEBAS_1\ONE_HOST/jload.log'" finished with return code 1. Output:
java version "1.4.2_13"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_13-b06)
Java HotSpot(TM) Client VM (build 1.4.2_13-b06, mixed mode)
12.03.2007 22:06:25 com.sap.inst.jload.Jload main
INFO: Jload -sec WPT,jdbc/pool/WPT,D:\usr\sap\WPT\SYS\global/security/data/SecStore.properties,D:\usr\sap\WPT\SYS\global/security/data/SecStore.key -dataDir S:/D51030724\J2EE_OSINDEP\J2EE-ENG/JDMP -job C:\PROGRA1\SAPINS1\NW04SR1\WEBAS_1\ONE_HOST/IMPORT.XML -log C:\PROGRA1\SAPINS1\NW04SR1\WEBAS_1\ONE_HOST/jload.log
12.03.2007 22:06:26 com.sap.inst.jload.Jload main
SCHWERWIEGEND: couldn't connect to DB
com.sap.sql.log.OpenSQLException: Could not load class com.ddtek.jdbc.sqlserver.SQLServerDriver.
ERROR 2007-03-12 22:06:26
CJS-20065 Execution of JLoad tool 'D:\Java/bin/java.exe '-classpath' './sharedlib/antlr.jar;./sharedlib/exception.jar;./sharedlib/jddi.jar;./sharedlib/jload.jar;./sharedlib/logging.jar;./sharedlib/offlineconfiguration.jar;./sharedlib/opensqlsta.jar;./sharedlib/tc_sec_secstorefs.jar;D:\usr\sap/WPT/JC10/j2ee\jdbc\base.jar;D:\usr\sap/WPT/JC10/j2ee\jdbc\util.jar;D:\usr\sap/WPT/JC10/j2ee\jdbc\sqlserver.jar;D:\usr\sap/WPT/JC10/j2ee\jdbc\spy.jar;D:/usr/sap/WPT/SYS/global/security/lib/tools/iaik_jce_export.jar;D:/usr/sap/WPT/SYS/global/security/lib/tools/iaik_jsse.jar;D:/usr/sap/WPT/SYS/global/security/lib/tools/iaik_smime.jar;D:/usr/sap/WPT/SYS/global/security/lib/tools/iaik_ssl.jar;D:/usr/sap/WPT/SYS/global/security/lib/tools/w3c_http.jar' '-showversion' '-Xmx512m' 'com.sap.inst.jload.Jload' '-sec' 'WPT,jdbc/pool/WPT,D:\usr\sap\WPT\SYS\global/security/data/SecStore.properties,D:\usr\sap\WPT\SYS\global/security/data/SecStore.key' '-dataDir' 'S:/D51030724\J2EE_OSINDEP\J2EE-ENG/JDMP' '-job' 'C:\PROGRA1\SAPINS1\NW04SR1\WEBAS_1\ONE_HOST/IMPORT.XML' '-log' 'C:\PROGRA1\SAPINS1\NW04SR1\WEBAS_1\ONE_HOST/jload.log'' aborts with returncode 1. Check 'C:\PROGRA1\SAPINS1\NW04SR1\WEBAS_1\ONE_HOST/jload.log' and 'C:\PROGRA1\SAPINS1\NW04SR1\WEBAS_1\ONE_HOST/jload.java.log' for more information.
jload.log ###########
12.03.07 22:06 com.sap.inst.jload.Jload main
INFO: Jload -sec WPT,jdbc/pool/WPT,D:\usr\sap\WPT\SYS\global/security/data/SecStore.properties,D:\usr\sap\WPT\SYS\global/security/data/SecStore.key -dataDir S:/D51030724\J2EE_OSINDEP\J2EE-ENG/JDMP -job C:\PROGRA1\SAPINS1\NW04SR1\WEBAS_1\ONE_HOST/IMPORT.XML -log C:\PROGRA1\SAPINS1\NW04SR1\WEBAS_1\ONE_HOST/jload.log
12.03.07 22:06 com.sap.inst.jload.Jload main
SEVERE: couldn't connect to DB
com.sap.sql.log.OpenSQLException: Could not load class com.ddtek.jdbc.sqlserver.SQLServerDriver.
Best regards,
Bernd

Hello Kairat,
Please follow the below mentioned guide to install it.
Check all the parameters to set and run pre requisite checker before starting installation.
Keep in mind that before starting any SAP installation you should always run prerequisite checker.
https://websmp205.sap-ag.de/instguides --> SAP Netweaver -->SAP Netweaver 7.0 -- > Installations --> EHP2
Regards,
Amit Barnawal

Closing the database connection after report in a server application

I searched these forums and the internet for a definitive answer on asking the Crystal SDK for java to close the jdbc connection after it has generated a report. We have been using the Crystal Report SDK to generate reports within our JEE application, built upon the Spring framework, for the past two years. It works well, especially if you prepare views in the database for your reports.
From what I can tell once you have used ReportClientDocument to create your report you all the close() method to release resources associated with report generation, but this does not close the jdbc database connection.
Further research states that if you are using the CrystalReportViewer you can call the dispose method to close the database connection. We are not using JSP nor this class, so that does us little good.
Finally I found a post that one could call ((AdvancedReportDocument)reportClientDocument.getReportSource()).dispose(). This doesn't drop the connection either.
Each report actually opens 3 connections according to SQL Server. Each report will reuse the connections it has open, so for 50 reports, theoretically, we could have up to 150 connections. We explained to our client those connections remain inactive, however this is unacceptable to our client as they would like to minimize the number of connections left open to their database.
If anyone can post any further information on this issue, it is much appreciated.

Yes, another team member found the issue. Quite embarrassing really I didn't see it. I was looking for the answer within Crystal's libraries. It had nothing to do with Crystal.
The developer who wrote the helper code for using Crystal first opened a connection to the datasource for the live production database and read that connection information for the report. Next he set that connection information in the report template's PropertyBag, then ran the report. The developer however forgot to close the connection he used to look up the connection info, leaving a memory leak and using up all the connections.
I'm glad you inquired. I forgot to post the resolution here.

Error while applying a patch "Unable to get the database connection"

Dear Experts,
A patch which got successfully applied is failing Production and the error is kind of surprising to me.
Apps version is 11.5.10.2
db version is 10.2.0.4
The worker log file shows
Time when worker restarted job: Thu Nov 24 2011 22:14:52
Start time for file is: Thu Nov 24 2011 22:14:52
adjava -ms128m -mx256m -nojit oracle.apps.fnd.odf2.FndXdfCmp &un_apps &pw_apps &un_apps &pw_apps &jdbc_protocol &jdbc_db_addr table &fullpath_pa_patch/115
Reading product information from file...
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Exception occured
              Copyright (c) 2003 Oracle Corporation
                 Redwood Shores, California, USA
         XDF(XML Object Description File) Comparison Utility
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NOTE: You may not use this utility for custom development
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AD Run Java Command is complete.
                     Copyright (c) 2002 Oracle Corporation
                        Redwood Shores, California, USA
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{code}
The error says database connection error. I am able to connect to the database using sqlplus. I tried to restart the failed worker, but the same error is repeating.
Any help would be appreciated.
Thanks
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Edited by: user7640966 on Nov 24, 2011 9:07 AM

Hussein,
One thing which I noticed now is in the apps Tier the
tnsnames.ora under $TNS_ADMIN
shows entry like this:
PROD=
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            (CONNECT_DATA=
                (SID=PROD)
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I deleted the tnsnames.ora and reran autoconfig but it is again recreating the same entry.
Any clue how this can be fixed?
Thanks
qARS

Can not find Function module in Crystal Report Database Connections FN

Hi,
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Yes,
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than
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Hi
Thank you for reading my post
I have several AS registered in my Jdeveloper environemtn and several database connections.
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thanks

Hi,
see Tools --> Preferences --> Deployment
Uncheck the "Bundle default data-sources.xml during deployment
Frank

Problem with database connection in Jdev 11

Hello,
my jdev version is 11 and i want do really simple task create new database connection to my oracle db.
I open database navigator and click new connection. i want jdbc connection but after i fill this form i pressed test connection button and get this error msg:
Test failed: 4
i think i have correct information but i tried this, i opened my older jdev 10 and copy jdbc url from my old db connection.
In jdev 11 i checked Enter Custom JDBS Url and pasted url from jdev 10 and i get:
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J.

I add new information:
i cant connect to oracle db 8, but i try another db in my company which is 10 and its working fine.
I write java class and try connect to db 8 via jdbc manually:
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String user = "user1";
String password = "aaa";
Class.forName("oracle.jdbc.driver.OracleDriver");
// DriverManager.registerDriver (new oracle.jdbc.driver.OracleDriver());
Connection conn = DriverManager.getConnection(url, user, password);
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J.

Creating new Data Source Error - Database connection Failed

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Went to Workspace > Administer > Classing Planning Administration > Manage Data Sources > Create Data Source.
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SQL server 2005 is on the same physical server.
The diagnostic tool shows database connection passed for planning. A new database was created for the new application.
The server event viewer shows these errors.
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Group Policy Error "The client-side extension could not apply computer policy settings for 'Default Domain Policy {xxx}' because it failed with error code '0x80070003 The system cannot find the path specified.' See trace file for more details. "
The Group Policy client-side extension Group Policy Services failed to execute. Please look for any errors reported earlier by that extension.
Any help is appreciated.

Datasource for the application.
I have created a sql db for this planning application (my datasource). See my first message for more details.
When you create a new planning application, you need to associate it with a data source. Since this is a new install, I don't have any data sources available yet.
So, "To create, edit or delete data sources, click Manage Data Source."
This page lets you validate your connection to the database and essbase server. My essbase server connection validates! The database connection does not validate after I enter all the relevant information.
SCREEN INFO BELOW
Fields displayed with an asterisk (*) are mandatory.
Data Source Name *:
Data Source Description:
Select Database Platform
Microsoft SQL Server
Application Database
Server * :
Port * :
Database *:
User *:
Password *:
Click "Validate Database Connection"
ERROR ---> Database connection failed.
So it does not let me create a data source for my new planning application, so I cannot create a new planning application.
Thanks in advance.

Killing a Database connection..!

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