Database connections
Hi all I am working with a web application and I am getting the following error:
Error in allocating a connection. Cause: In-use connections equal max-pool-size and expired max-wait-time. Cannot allocate more connections
I understand that that means that there is no connections available and that those that were available aren't being returned to the pool. Should the be anything other than closing connections and closing statement/preparedStatements that I should be doing ? Does one have to invalidate a datasource after being done with it, or is that something that will be taken care of ? It seems like it happens mainly when I redeploy the application. I have an extremely limited connection pool, so it may also be an issue of connections not being collected fast enough. Any suggestions or thoughts would be greatly appreciated.
In future JDBC related questions should be posted
into the JDBC forum.Sorry about that I keep forgetting there are specialized forums as I usually only frequent the 2 main ones
If you are closing all your resources correctly
(ResultSets, Statements (and subclasses) and
Connections) then you are doing it correctly.Ok thanks.
If you simply have a need for more connections than
you have in your pool then you'll have to address
that.
Similar Messages
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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,
BerndHello 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...
Reading language and territory information from file...
Reading language information from applUS.txt ...
Temporarily resetting CLASSPATH to:
"/erp/oracle/prodappl/ad/11.5.0/java/adjri.zip:/usr/java14/jre/lib/charsets.jar:/usr/java14/jre/lib/core.jar:/usr/java14/jre/lib/graphics.jar:/usr/java1
Calling /usr/java14/bin/java ...
Exception occured
Copyright (c) 2003 Oracle Corporation
Redwood Shores, California, USA
XDF(XML Object Description File) Comparison Utility
Version 1
NOTE: You may not use this utility for custom development
unless you have written permission from Oracle Corporation.
Unable to get the database connection using schema username/passwordIo exception: The Network Adapter could not establish the connection
AD Run Java Command is complete.
Copyright (c) 2002 Oracle Corporation
Redwood Shores, California, USA
AD Java
Version 11.5.0
NOTE: You may not use this utility for custom development
unless you have written permission from Oracle Corporation.
AD Worker error:
The above program failed. See the error messages listed
above, if any, or see the log and output files for the program.
Time when worker failed: Thu Nov 24 2011 22:14:53
{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
qARS
Edited by: user7640966 on Nov 24, 2011 9:07 AMHussein,
One thing which I noticed now is in the apps Tier the
tnsnames.ora under $TNS_ADMIN
shows entry like this:
PROD=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=<appsServerName>)(PORT=1521))
(ADDRESS=(PROTOCOL=tcp)(HOST=<dbServer>)(PORT=1521))
(CONNECT_DATA=
(SID=PROD)
)Actually *(ADDRESS=(PROTOCOL=tcp)(HOST=<appsIPaddress>)(PORT=1521))* this line in the tnsnames.ora is not correct. In fact the appsServerName should be replaced with dbServerName
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,
we designed a Function Module XX in SE80.
We set up BO Interagtion for SAP
We can connect to the R3( CRM) System.
We can See FN's.
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What is missing ?
Any Authorization missing ?
Which Where
Thanks
Martin SautterYes,
we just have got it:
/Database Assistant / Data / My Connections/<myConnection>/FN -> Right Mice Button/ Options -> Table Name Like: <MYTABLE>
than
/Right Mice Button/Regenerate
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Martin -
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Hi
Thank you for reading my post
I have several AS registered in my Jdeveloper environemtn and several database connections.
unfortunately some times Jdeveloper can not deploy an application into a server beacause it say that "I failed to create the connection pool", the project has no database stuff at all but Jdeveloper try to register and create connection pools for those connection that i hace registered in the Databse coonnection node.
It fails because in that particular server which i want to deploy the application i have not add all databases JDBC driver.
is there any solution for it?
thanksHi,
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:
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In jdev 11 i checked Enter Custom JDBS Url and pasted url from jdev 10 and i get:
Test failed: 4
What is wrong?
Thanks for your advice.
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:
String url = "jdbc:oracle:thin:@SERVER:1525:SID";
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);
and i get this:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 4
at oracle.jdbc.driver.T4C8TTIdty.marshal(T4C8TTIdty.java:468)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:339)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:621)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:203)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:34)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:501)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
at java.sql.DriverManager.getConnection(DriverManager.java:171)
at project1.Class1.main(Class1.java:31)
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J. -
Creating new Data Source Error - Database connection Failed
Successfully installed and configured 11.1.1.3.0. Planning and Essbase dev.
Went to Workspace > Administer > Classing Planning Administration > Manage Data Sources > Create Data Source.
Entered all info about the application database , etc. Getting error "The database connection failed" (I was able to connect with no problem during the install)
SQL server 2005 is on the same physical server.
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The server event viewer shows these errors.
"Login failed for user 'xxx-hyperion'. The user is not associated with a trusted SQL Server connection."
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.
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Data Source Description:
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Microsoft SQL Server
Application Database
Server * :
Port * :
Database *:
User *:
Password *:
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Thanks in advance. -
JDBC Adapter - Established database connection failed
Hi Guys,
we have installed the JDBC Adapter based on the How To Guide and we checked after the installation the Libaries :Cluster --> Server --> Libraries --> com.sap.aii.af.jmsproviderlib and the box Box "JARs Contained" was filled.
So in my point of view we have done everything right during the installation.
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Attempt to establish database connection failed with SQL error com.sap.aii.adapter.jdbc.sql.DriverManagementException: Cannot establish connection to URL "jdbc:microsoft:sqlserver://xxx.x.xx.xxx:1433; databaseName=CZZ03;":ClassNot FoundException: com.microsoft.sqlserver.jdbc.SQLServerDriver
Do you have any ideas?
Regards
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https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/xi/xi-how-to-guides/how%20to%20install%20and%20configure%20external%20drivers%20for%20jdbc%20and%20jms%20adapters.pdf
Configuration of JDBC Adapter for SQL Server
JDBC Driver = com.microsoft.jdbc.sqlserver.SQLServerDriver
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UserID and Password.
If the connection is not working find the correct port number.
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/40b92770-db81-2a10-8e91-f747188d8033
JDBC- X I - R/3 Scenario
/people/bhavesh.kantilal/blog/2006/07/03/jdbc-receiver-adapter--synchronous-select-150-step-by-step
/people/sap.user72/blog/2005/06/01/file-to-jdbc-adapter-using-sap-xi-30
Thanks,
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Reward Points If it is Useful.. -
J2EE Struts - Database connection failed - help???:(
Hello,
I have built a little web application and it works without any problems. In the next step I tried to add a database connection but I have already worked on it for at least one day and I could not fix the problem with the database connection.
I downloaded the MySQL Server 5.0 and installed it, furthermore I have downloaded the jdbc driver mysql-connector-java-3.1.11.zip and extracted it to the MySQL Server 5.0 directory. Furthermore I have added under system settings - system - etended - system variables the whole path to the driver -> C:\Programme\MySQL\MySQL Server 5.0\mysql-connector-java-3.1.11\mysql-connector-java-3.1.11-bin.jar to the CLASSPATH systemvariable.
Then I have startet the SQL Server 5.0 with mysqld --console from the command line.
Furthermore I have added under Project-Properties-Java Build Path - Libraries - Add External JARs in Eclipse the mysql-connector-java-3.1.11-bin.jar to my Struts WebProject.
To test the whole thing I have added to the existing test-database from mysql a table named owner and wanted to test the database connection in the Action-class with the following statements - I quote the whole execute method of the OwnerAction class:
public ActionForward execute(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception {
OwnerForm ownerForm = (OwnerForm) form;
String greet = ownerForm.getGreet();
String name = ownerForm.getName();
request.setAttribute("name", name);
request.setAttribute("greet", greet);
String address = ownerForm.getAddress();
String email = ownerForm.getEmail();
int tel = ownerForm.getTel();
Connection conn = null;
Statement stmt = null;
ResultSet rs = null;
DriverManager.registerDriver(new org.gjt.mm.mysql.Driver());
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","sa");
try {
//conn = dataSource.getConnection();
stmt = conn.createStatement();
int id = 0;
rs = stmt.executeQuery("select max(id) as counter from owner");
while(rs.next()){
id = rs.getInt("counter");
id += 1;
stmt.executeUpdate("insert into owner values("+id+", '"+greet+"', '"+name+"', '"+email+"', '"+address+"', "+tel+")");
rs.close();
stmt.close();
conn.close();
catch(SQLException e){
throw new SQLException("database error");
// Forward control to the specified success target
return (mapping.findForward("success"));
}But when I execute the WebApplication and the Action will be called the following error message appears in the browser:
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Servlet execution threw an exception
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
root cause
java.lang.NoClassDefFoundError: org/gjt/mm/mysql/Driver
com.asprise.struts.action.OwnerAction.execute(OwnerAction.java:72)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5 logs.
It must depend with anything that the driver was not found but I have defined it in the CLASSPATH variable and added it to the Web-Project in eclispe.
Has anybody an idea what I have else made wrong or have forgotten??:(:(:(
thanks in advance
lg
patOne thing I have forgotten - I have also copied the mysql-connector-java-3.1.11-bin.jar in the WebRoot\WEB-INF\lib directory of my EasyStruts WebApplication.
Can anything else be wrong??:(:((
regards -
J2EE - database connection failed...:(:(:(
Hello,
I have built a little web application and it works without any problems. In the next step I tried to add a database connection but I have already worked on it for at least one day and I could not fix the problem with the database connection.
I downloaded the MySQL Server 5.0 and installed it, furthermore I have downloaded the jdbc driver mysql-connector-java-3.1.11.zip and extracted it to the MySQL Server 5.0 directory. Furthermore I have added under system settings - system - etended - system variables the whole path to the driver -> C:\Programme\MySQL\MySQL Server 5.0\mysql-connector-java-3.1.11\mysql-connector-java-3.1.11-bin.jar to the CLASSPATH systemvariable.
Then I have startet the SQL Server 5.0 with mysqld --console from the command line.
Furthermore I have added under Project-Properties-Java Build Path - Libraries - Add External JARs in Eclipse the mysql-connector-java-3.1.11-bin.jar to my Struts WebProject.
To test the whole thing I have added to the existing test-database from mysql a table named owner and wanted to test the database connection in the Action-class with the following statements - I quote the whole execute method of the OwnerAction class:
public ActionForward execute(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception {
OwnerForm ownerForm = (OwnerForm) form;
String greet = ownerForm.getGreet();
String name = ownerForm.getName();
request.setAttribute("name", name);
request.setAttribute("greet", greet);
String address = ownerForm.getAddress();
String email = ownerForm.getEmail();
int tel = ownerForm.getTel();
Connection conn = null;
Statement stmt = null;
ResultSet rs = null;
DriverManager.registerDriver(new org.gjt.mm.mysql.Driver());
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","sa");
try {
//conn = dataSource.getConnection();
stmt = conn.createStatement();
int id = 0;
rs = stmt.executeQuery("select max(id) as counter from owner");
while(rs.next()){
id = rs.getInt("counter");
id += 1;
stmt.executeUpdate("insert into owner values("+id+", '"+greet+"', '"+name+"', '"+email+"', '"+address+"', "+tel+")");
rs.close();
stmt.close();
conn.close();
catch(SQLException e){
throw new SQLException("database error");
// Forward control to the specified success target
return (mapping.findForward("success"));
}But when I execute the WebApplication and the Action will be called the following error message appears in the browser:
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Servlet execution threw an exception
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
root cause
java.lang.NoClassDefFoundError: org/gjt/mm/mysql/Driver
com.asprise.struts.action.OwnerAction.execute(OwnerAction.java:72)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5 logs.
It must depend with anything that the driver was not found but I have defined it in the CLASSPATH variable and added it to the Web-Project in eclispe.
Has anybody an idea what I have else made wrong or have forgotten??:(:(:(
thanks in advance
lg
patOne thing I have forgotten - I have also copied the mysql-connector-java-3.1.11-bin.jar in the WebRoot\WEB-INF\lib directory of my EasyStruts WebApplication.
Can anything else be wrong??:(:((
regards -
New database connection failed with oepe
Hi everybody,
@http://docs.oracle.com/cd/E27086_02/help/oracle.eclipse.tools.common.doc/html/install.html#install_oepe
Oracle Enterprise Pack for Eclipse Installation Guide says:
"You can install OEPE using any of the following ways:
Download, and then unzip OEPE plugins directly into the Eclipse dropins folder and restart Eclipse."
This is what I have done,
then when I create a new database connection, and I press the button "test connection" i got a pop up saying "Ping failed" giving details:
java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.net.FactoryURLClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at oracle.eclipse.tools.database.connectivity.db.OracleJDBCConnection.createConn(OracleJDBCConnection.java:198)
at oracle.eclipse.tools.database.connectivity.db.OracleJDBCConnection.createConnection(OracleJDBCConnection.java:149)
at org.eclipse.datatools.connectivity.DriverConnectionBase.internalCreateConnection(DriverConnectionBase.java:105)
at org.eclipse.datatools.connectivity.DriverConnectionBase.open(DriverConnectionBase.java:54)
at org.eclipse.datatools.connectivity.drivers.jdbc.JDBCConnection.open(JDBCConnection.java:73)
at oracle.eclipse.tools.database.connectivity.db.OracleJDBCConnectionFactory.createConnection(OracleJDBCConnectionFactory.java:26)
at org.eclipse.datatools.connectivity.internal.ConnectionFactoryProvider.createConnection(ConnectionFactoryProvider.java:83)
at org.eclipse.datatools.connectivity.internal.ConnectionProfile.createConnection(ConnectionProfile.java:359)
at org.eclipse.datatools.connectivity.ui.PingJob.createTestConnection(PingJob.java:76)
at org.eclipse.datatools.connectivity.ui.PingJob.run(PingJob.java:59)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Did I miss something?The documentation is out of date. The unzip to dropins method is no longer supported. The OEPE zip you downloaded is actually an archived repository. You can follow the instruction for installing using Eclipse Update Manager and point to the downloaded zip instead of the online repository.
I will follow up to get the docs updated.
- Konstantin -
Dir Sirs,
I have installed JDeleoper 9.0.5.1 with JHEADSTART 9.0.5.1 and I tried to run the oil.demo application. The database connection was tested successful. If I start the application , the is this message in the browser:
Application Error
Internal error occurred. Please contact your system administrator
Click here to continue
To continue working with the system, you must first log out and log in again.
JBO-25200: Application module is not connected to a database
oracle.jbo.NotConnectedException: JBO-25200: Application module is not connected to a database at oracle.jbo.server.DBTransactionImpl.checkConnected(DBTransactionImpl.java:5689) at oracle.jbo.server.DBTransactionImpl2.createPreparedStatement(DBTransactionImpl2.java:417) at oracle.jbo.server.DBTransactionImpl.createReUsePreparedStatement(DBTransactionImpl.java:4081) at oracle.jbo.server.ViewObjectImpl.getPreparedStatement(ViewObjectImpl.java:7421) at oracle.jbo.server.QueryCollection.buildResultSet(QueryCollection.java:561) at oracle.jbo.server.QueryCollection.executeQuery(QueryCollection.java:521) at oracle.jbo.server.ViewObjectImpl.executeQueryForCollection(ViewObjectImpl.java:3200) at oracle.jbo.server.ViewRowSetImpl.execute(ViewRowSetImpl.java:597) at oracle.jbo.server.ViewRowSetImpl.executeQueryForMasters(ViewRowSetImpl.java:700) at oracle.jbo.server.ViewRowSetImpl.executeQuery(ViewRowSetImpl.java:638) at
Do you know this problem?
Thank you.
Stefan Pukallus from GermanyDear Sir,
u solve the problem?
if u solve this problem plz send me the solution of it.
I have installed JDeleoper 9.0.5.1 with JHEADSTART 9.0.5.1 and I tried to run the oil.demo application. The database connection was tested successful. If I start the application , the is this message in the browser:
Application Error
Internal error occurred. Please contact your system administrator
Click here to continue
To continue working with the system, you must first log out and log in again.
JBO-25200: Application module is not connected to a database
oracle.jbo.NotConnectedException: JBO-25200: Application module is not connected to a database at oracle.jbo.server.DBTransactionImpl.checkConnected(DBTransactionImpl.java:5689) at oracle.jbo.server.DBTransactionImpl2.createPreparedStatement(DBTransactionImpl2.java:417) at oracle.jbo.server.DBTransactionImpl.createReUsePreparedStatement(DBTransactionImpl.java:4081) at oracle.jbo.server.ViewObjectImpl.getPreparedStatement(ViewObjectImpl.java:7421) at oracle.jbo.server.QueryCollection.buildResultSet(QueryCollection.java:561) at oracle.jbo.server.QueryCollection.executeQuery(QueryCollection.java:521) at oracle.jbo.server.ViewObjectImpl.executeQueryForCollection(ViewObjectImpl.java:3200) at oracle.jbo.server.ViewRowSetImpl.execute(ViewRowSetImpl.java:597) at oracle.jbo.server.ViewRowSetImpl.executeQueryForMasters(ViewRowSetImpl.java:700) at oracle.jbo.server.ViewRowSetImpl.executeQuery(ViewRowSetImpl.java:638) at
Do you know this problem?
Thank you.
Jay Patel
Message was edited by:
user509928 -
SQL Server Database Connectivity with Visual Studio 2012 - Help Needed
Hello,
I am having Visual Studio 2012 and SQL Developer 4.0 installed on my system with Windows 8 - 64bit
I want to shift a VS project with an SQL database connectivity to another new Laptop (above mentioned) ...
I have the project opened in VS without bieng connected to the database..
I have a backup file of the database (which needs to be restored to a new created database on SQL Developer)
The problem:
I am unable to create a server connection in SQL Developer which will allow me to create a new database followed by the recovery from backup file.
I am getting the following error message when I try to create a connection:
Status: Faliure - IO error: The network adapter could not establish a connection
Please help me in setting up a server connection and adding a new sql databaseThe error message seemed unfamiliar to me and since I had never heard of SQL Developer before, I went to Google. Google might be pulling my legs, but it appears that SQL Developer is related to Oracle. This forum is devoted to SQL Server, so you are in the
wrong place.
Try finding a forum for SQL Developer.
Erland Sommarskog, SQL Server MVP, [email protected] -
A database connection in a swing application
hi ,
i am developping an intranet stabdalone swing application based on a jdbc connection to oracle8i data server.
in fact i am interested in keeping my user authentification encrypted while this connection is done! is there any method to do it ! i read about SSL but is it supported by web application ! i have a client-server simple connection !
please help !Hello Levi,
You can to do this form:
String appModule = "yourAppmodule";
String config = "yourAppmodule"+ "Local";
ApplicationModule am = Configuration.createRootApplicationModule(appModule, config);
ConnectionMetada cm = am.getTransaction().getConnectionMetadata();
DriverManager.registerDriver(new OracleDriver());
Connection connection = DriverManager.getConnection(cm.getJdbcURL());You can to see this threads:
Retrieve Database Connection
Getting the Connection object out of ApplicationModule
Regards,
Renan -
Open and close database connection jsp page
hi there, i wanna know about how to open database connection to Mysql at the beginning of the page and close the connection at the end of the page. The jsp page contain all processing code.
plz help me...thx thx<html>
<head>
<basefont face="Arial">
</head>
<body>
<%@ page language="java" import="java.sql.*" %>
<%!
// define variables
String id;
String firstName;
String lastName;
// define database parameters, change this according to your needs
String host="localhost";
String user="root";
String pass="";
String db="test";
String conn;
%>
<table border="1" cellspacing="1" cellpadding="5">
<tr>
<td><b>id</b></td>
<td><b>first name</b></td>
<td><b>last name</b></td>
</tr>
<%
Class.forName("org.gjt.mm.mysql.Driver");
// create connection string
conn = "jdbc:mysql://" + host + "/" + db + "?user=" + user
+ "&password=" + pass;
// pass database parameters to JDBC driver
Connection Conn = DriverManager.getConnection(conn);
// query statement
Statement SQLStatement = Conn.createStatement();
// generate query
// change this query according to your needs
String Query = "SELECT id, firstname, lastname FROM abook";
// get result
ResultSet SQLResult = SQLStatement.executeQuery(Query);
while(SQLResult.next())
id = SQLResult.getString("id");
firstName = SQLResult.getString("firstname");
lastName = SQLResult.getString("lastname");
out.println("<tr><td>" + id + "</td><td>" +
firstName + "</td><td>" + lastName + "</td></tr>");
// close connection
SQLResult.close();
SQLStatement.close();
Conn.close();
%>
</table>
</body>
</html>hi :-)
i've got that on the net as part of the tutorial on jsp (long long time ago)
you just have to be resourceful in finding solutions :-)
try google :-) there are lot's of tutorial available in there ;-)
goodluck ;-)
regards,
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