RE: [OT] Handling database connection exceptions

I have a Database servlet configured in web.xml, which intialises a connection pool on Server startup. However, if the data source is unavailable, I get a Null Pointer exception on my JSPs, which is propagated from my Data Access class. IMO, the problem is that you're accessing the database

RE: [OT] Handling database connection exceptions

Wendy, Thanks for your mail. I don't know if you fully understood where I'm coming from! As I said, the database connection is accessed from a Data Access class (read model), which is called from my DispatchAction class. Since the exception is not caught in my DispatchAction class (the methods

RE: [OT] Handling database connection exceptions

? -Richard -Original Message- From: Shyam A [mailto:[EMAIL PROTECTED] Sent: Monday, November 17, 2003 3:10 PM To: Struts Users Mailing List Cc: [EMAIL PROTECTED] Subject: RE: [OT] Handling database connection exceptions Wendy, Thanks for your mail. I don't know if you fully understood where

RE: [OT] Handling database connection exceptions

understood where I'm coming from! As I said, the database connection is accessed from a Data Access class (read model), which is called from my DispatchAction class. Since the exception is not caught in my DispatchAction class (the methods throw Since the connection is being accessed from

RE: [OT] Handling database connection exceptions

3:22 PM To: 'Struts Users Mailing List' Subject: RE: [OT] Handling database connection exceptions Shyam, Where in your JSP does the NullPointerException occur? Is it in a method call in a scriptlet? If so, your JSP is still indirectly accessing the database. What Wendy suggested

RE: [OT] Handling database connection exceptions

Richard, Thanks for your mail. I am pretty sure I don't access the database in my JSP's. I also use the errorPage attribute for all my JSP's, however, it does not handle Null Pointer exceptions that occur due to problems with database connection. Given below is the Exception trace...it occurs

[OT] Handling database connection exceptions

Message- From: Shyam A [mailto:[EMAIL PROTECTED] Sent: Monday, November 17, 2003 3:53 PM To: Struts Users Mailing List Cc: [EMAIL PROTECTED] Subject: RE: [OT] Handling database connection exceptions Richard, Thanks for your mail. I am pretty sure I don't access the database in my JSP's. I

Re: [OT] Handling database connection exceptions

Jim, action's execute throws exception; this exposes the container to deceleertively do this, if you declare an error page in web.xml. .V Jimmy Emmanual wrote: Why don't you throw the exception from the Data Access class and catch it in DispatchAction and if there is an exception then forward

RE: [OT] Handling database connection exceptions

, 2003 4:07 PM To: 'Struts Users Mailing List' Subject: [OT] Handling database connection exceptions Shyam, This problem is not happing in your JSP. According to your stack trace, it happens in obs.business.UserLogin.checkLogin(UserLogin.java:192) which is being called in your LoginAction.perform

RE: [OT] Handling database connection exceptions

/building_controller.html#exceptio n_handler -Richard -Original Message- From: Yee, Richard K,,DMDCWEST [mailto:[EMAIL PROTECTED] Sent: Monday, November 17, 2003 4:07 PM To: 'Struts Users Mailing List' Subject: [OT] Handling database connection exceptions Shyam

problem in database connection

Dear All, While connecting to Database i am getting following error 'Cannot load JDBC driver class 'null'' in TOMACT server. I have a bean called UpdateRegDB, in this bean i am connecting to the database, following is code for connection and i m creating instance of this bean in ActionServlet

Database Connection

Hello, I have just started developing with Struts and was wondering if anyone could help me connect to a Sybase Database using my webapp? I have set up my JSP page, actionform and action. I have set the datasource properies in my config.xml and am calling them from my action. It is giving me a

Re: Database Connection

: Subject: Database Connection 31/07/2003 05:00 PM

RE: Database Connection

Users Mailing List |Subject: Database Connection | | |Hello, | |I have just started developing with Struts and was wondering if |anyone could help me connect to a Sybase Database using my webapp? | |I have set up my JSP page, actionform and action. I have set the |datasource properies in my config.xml

Re: Database Connection

Hi Navjot, I ran into trouble as I put it in the classpath you mentioned. (Connection works, connection works not, and so on) I think it's better to put it in the webapps classpath, if you're not using jndi. yours Marc Am Donnerstag, 31. Juli 2003 13:37 schrieb Navjot Singh: the jar file

RE: Database Connection

singh |-Original Message- |From: Marc Ende [mailto:[EMAIL PROTECTED] |Sent: Thursday, July 31, 2003 5:19 PM |To: Struts Users Mailing List |Subject: Re: Database Connection | | |Hi Navjot, | |I ran into trouble as I put it in the classpath you mentioned. |(Connection works, connection works

Re: Database Connection

Am Donnerstag, 31. Juli 2003 13:53 schrieb Navjot Singh: yes, you can put your class file in webapp CP also - whichever way it works for you. However, docs say that it should be under tomcat common dir. Yes of course, they should be under tomcats common dir especially when using jndi for

database connection - INGRES

Hi, I'm extrememly new to STRUTS and have juts built my first application. Would anyone be able to advise me on the best way to make my connection to my INGRES database? Sample code would be appreciated. Thanks, David This message is for the designated recipient only and may contain

RE: Database Connection in Logic Beans - pooling? = request cycle

To: [EMAIL PROTECTED] Subject: RE: Database Connection in Logic Beans - pooling? Do NOT save the request into the session. That's why there is a connection pool (DataSource), you take one out, use it, and put it back. If you don't return it you will ruin the whole point of the pool. The connection

RE: Database Connection in Logic Beans - pooling?

PROTECTED]' Asunto: Database Connection in Logic Beans - pooling? I am using: Tomcat 4.0 Struts 1.0.2 The problem I have successfully used the Struts database connection pooling in a trial web app, but as far as I can tell, a reference to the datasource can only be obtained from within

Re: Database Connection in Logic Beans - pooling?

Steve McLeod writes: I am using: Tomcat 4.0 Struts 1.0.2 The problem I have successfully used the Struts database connection pooling in a trial web app, but as far as I can tell, a reference to the datasource can only be obtained from within an Action class (or directly

RE: Database Connection in Logic Beans - pooling?

02, 2002 9:06 AM To: Struts Users Mailing List Subject: Re: Database Connection in Logic Beans - pooling? Steve McLeod writes: I am using: Tomcat 4.0 Struts 1.0.2 The problem I have successfully used the Struts database connection pooling in a trial web app, but as far as I can

Re: FW: Database Connection in Logic Beans - pooling?

. Also, this lets your logic beans not know about servlets or struts which is much cleaner in my opinion. Hope that helps, Dave -Original Message- From: Steve McLeod Sent: Monday, 2 September 2002 10:10 AM To: '[EMAIL PROTECTED]' Subject: Database Connection in Logic Beans - pooling? I am

RE: Database Connection in Logic Beans - pooling?

will be appreciated. Frederic -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Monday, September 02, 2002 9:06 AM To: Struts Users Mailing List Subject: Re: Database Connection in Logic Beans - pooling? Steve McLeod writes: I am using: Tomcat 4.0

RE: Database Connection in Logic Beans - pooling?

: Database Connection in Logic Beans - pooling? You can solve this problem by providing a business service framework for your application (There has been a lot of talk about this sort of thing on this list...I can't think of a particular thread to reference for you so you may just want to go through

RE: Database Connection in Logic Beans - pooling?

:[EMAIL PROTECTED]] Sent: Monday, September 02, 2002 9:17 PM To: Struts Users Mailing List Subject: RE: Database Connection in Logic Beans - pooling? You can solve this problem by providing a business service framework for your application (There has been a lot of talk about this sort of thing

RE: Database Connection in Logic Beans - pooling?

. -Original Message- From: Troy Hart [mailto:[EMAIL PROTECTED]] Sent: Monday, September 02, 2002 9:17 PM To: Struts Users Mailing List Subject: RE: Database Connection in Logic Beans - pooling? You can solve this problem by providing a business service framework for your application (There has been

RE: Database Connection in Logic Beans - pooling? = request cycle

AM To: [EMAIL PROTECTED] Subject: RE: Database Connection in Logic Beans - pooling? Do NOT save the request into the session. That's why there is a connection pool (DataSource), you take one out, use it, and put it back. If you don't return it you will ruin the whole point of the pool

Database Connection in Logic Beans - pooling?

I am using: Tomcat 4.0 Struts 1.0.2 The problem I have successfully used the Struts database connection pooling in a trial web app, but as far as I can tell, a reference to the datasource can only be obtained from within an Action class (or directly within a JSP page but let's

Re: Database Connection in Logic Beans - pooling?

not know about servlets or struts which is much cleaner in my opinion. Hope that helps, Dave From: Steve McLeod [EMAIL PROTECTED] Reply-To: Struts Users Mailing List [EMAIL PROTECTED] To: '[EMAIL PROTECTED]' [EMAIL PROTECTED] Subject: Database Connection in Logic Beans - pooling? Date: Mon, 2 Sep 2002

FW: Database Connection in Logic Beans - pooling?

]' Subject: Database Connection in Logic Beans - pooling? I am using: Tomcat 4.0 Struts 1.0.2 The problem I have successfully used the Struts database connection pooling in a trial web app, but as far as I can tell, a reference to the datasource can only be obtained from within an Action

Problem with maintaining a database connection in a session bean

Hi, I'm trying to build a small pilot application with Struts. My ultimate goal is a dynamic web application with intensive use of database. My database is Oracle 8. The problem is following: in 'LoginAction' I set up a database connection (java.sql.Connection variable) with Oracle

RE: Problem with maintaining a database connection in a session bean

PROTECTED] Subject: Problem with maintaining a database connection in a session bean Hi, I'm trying to build a small pilot application with Struts. My ultimate goal is a dynamic web application with intensive use of database. My database is Oracle 8. The problem is following: in 'LoginAction

Re: Problem with maintaining a database connection in a session bean

. My database is Oracle 8. The problem is following: in 'LoginAction' I set up a database connection (java.sql.Connection variable) with Oracle database. I save it in the User session bean as a bean-variable. Then I test it in a jsp-page. Everything seems to work: the variable containing

What is the most viable OSS database connection pooling manager next to PoolMan?

Subject: What is the most viable OSS database connection pooling manager next to PoolMan? From: Christopher Cheng [EMAIL PROTECTED] === The DBCP component is still in development? http://cvs.apache.org/viewcvs/jakarta-commons/dbcp/ does not even have a proper webpage. -- To unsubscribe, e

Re: Exception opening database connection

realm on JDBC for database access. When I start the Tomcat server, I get the following error... Any ideas? TIA Sridhar Starting service Tomcat-Standalone Apache Tomcat/4.0 Catalina.start: LifecycleException: Exception opening database connection: java.sql.SQLException

Exception opening database connection

Hello, I'm using the Tomcat's realm on JDBC for database access. When I start the Tomcat server, I get the following error... Any ideas? TIA Sridhar Starting service Tomcat-Standalone Apache Tomcat/4.0 Catalina.start: LifecycleException: Exception opening database connection

database connection-pool

Hi, i've been developing an app with Struts lately and i've reach the point where i just have to make the database related work in order to acomplish trasactional and persistence properties. To do so, i was thinking in using the appropriate Oracle driver, but looking at the the Struts example i

Re: database connection-pool

Its hidden away under the Utilities section on the website http://jakarta.apache.org/struts/api/org/apache/struts/util/package-summary.html#doc.JDBC and there's a little example of how to use it in the user guide http://jakarta.apache.org/struts/userGuide/building_model.html#databases should be

Re: database connection-pool

] rsoft.com cc: (bcc: Craig Reichenbach/CAM/Lotus) Subject: database connection-pool 10/01/2001 06:05

RE: database connection

-Original Message- From: Vivek Bhaskaran [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 03, 2001 5:21 PM To: [EMAIL PROTECTED] Subject: Re: database connection A reference to the DataSource is stored in the ServletContext object... You can get it from that. - Original Message - From: Ying

RE: database connection

in the databaseservlet class do: getServletContext().getAttribute(key); -Original Message- From: Ying Teng To: [EMAIL PROTECTED] Sent: 5/4/01 8:17 AM Subject: RE: database connection Yes, I can get the DataSource reference in the ServletContext object of the ActionServlet class. But I

RE: database connection

servlet should be loaded first. -Original Message- From: Ying Teng To: Gogineni, Pratima Sent: 5/4/01 12:10 PM Subject: RE: database connection I tried that. The ServletContext object does not have that attribute. If you look at the servlet.log file, the system initializes the database

Re: database connection

A reference to the DataSource is stored in the ServletContext object... You can get it from that. - Original Message - From: Ying Teng [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, May 03, 2001 11:28 AM Subject: RE: database connection What you described is true. Now my

RE: database connection

The ServletContext object of databaseServlet or the ActionServlet? Could you be more specific? Thanks. -Original Message- From: Vivek Bhaskaran [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 03, 2001 5:21 PM To: [EMAIL PROTECTED] Subject: Re: database connection A reference

RE: database connection

There is only one ServletContext for the entire Web Application. -Original Message- From: Ying Teng [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 03, 2001 5:05 PM To: [EMAIL PROTECTED] Subject: RE: database connection The ServletContext object of databaseServlet or the ActionServlet

database connection

Hello All, I am trying to connect to the database but when I do DataSource dataSource = (DataSource)servlet.getServletContext().getAttribute(Action.DATA_SOURCE_KEY) ; it gives me null as the dataSource value. Can anybody help me out here? Thanks. Ying

Re: database connection

| || | |+--- | || | To: [EMAIL PROTECTED] | | cc: (bcc: Donnie Hall/Enron Communications) | | Subject: database connection

RE: database connection

: database connection Did you set up the data source configuration in your struts-config.xml file? I'm using oracle 8.1.6, my setup looks like this. data-sources data-source autoCommit=false description=Data Source Configuration driverClass=oracle.jdbc.driver.OracleDriver

RE: database connection

| || | |+--- | || | To: [EMAIL PROTECTED] | | cc: (bcc: Donnie Hall/Enron Communications) | | Subject: RE: database connection

RE: database connection

: Fax to: 05/02/01 Subject: RE: database connection 09:50 AM

RE: database connection

: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Wednesday, May 02, 2001 12:06 PM To: [EMAIL PROTECTED] Subject: RE: database connection The reason why the value is null is because that is the default when you don't specify a key value for your datasource. When that is the case you will obtain

RE: database connection

: Fax to: 05/02/01 Subject: RE: database connection 12:31 PM

database connection getting garbage collected

Hi, After several hours with no activity my connection pool seems to get garbage collected (or die). It works fine, but then I come in the next day and get the following error: java.sql.SQLException: Communication link failure: java.net.SocketException The full stack trace is at the bottom

Re: configuring database connection pool

Steve A Drake wrote: As a follow-up to the problem I was having with the setReadOnly() method for the Connection object (using Informix), I downloaded the latest/greatest JDBC driver that I could find (SQLJ 2.20.JC1 from www.informix.com/evaluate) and found the same problem. From the

Re: configuring database connection pool

As a follow-up to the problem I was having with the setReadOnly() method for the Connection object (using Informix), I downloaded the latest/greatest JDBC driver that I could find (SQLJ 2.20.JC1 from www.informix.com/evaluate) and found the same problem. From the release notes (file:

configuring database connection pool

Hello. I'm trying to configure Struts to instantiate a database connection pool using the ifxjdbc.jar driver for the Informix Dynamic Server (7.2). So far, I'm getting exceptions at startup. I also get an exception when I try to obtain a DB connection. Any help would be appreciated! Note

Re: configuring database connection pool

to configure Struts to instantiate a database connection pool using the ifxjdbc.jar driver for the Informix Dynamic Server (7.2). So far, I'm getting exceptions at startup. I also get an exception when I try to obtain a DB connection. Any help would be appreciated! Note that I've verified

Re: configuring database connection pool

On Thu, 25 Jan 2001, Craig R. McClanahan wrote: It looks like the Informix JDBC driver is throwing an exception when you call setReadOnly(true) on one of its connections. Could you try that in a standalone program and see what happens, and also what happens if you call setReadOnly(false)?

Re: Database connection pool bug

Howard Moore wrote: There appears to still be a problem with the database connection pool when used with the JDBC-ODBC bridge (build 20001209). In the close() method of org.apache.struts.util.GenericConnection the statement "conn.setTypeMap(this.map);"

Database connection pool bug

There appears to still be a problem with the database connection pool when used with the JDBC-ODBC bridge (build 20001209). In the close() method of org.apache.struts.util.GenericConnection the statement "conn.setTypeMap(this.map);" throws an UnsupportedOperationException r