The best way to debug a deployment
I have an application written in JDeveloper and it runs like a dream. The problem is that when I deploy it to Oracle App Server, I cant get it to run. I am using the JDeveloper deployment profile for creating my jars/wars/ears. I have build many of these in the past and they all work well. There is obviously something I am doing wrong with this one. How can I go about debugging my deployment. I've been stuck on this one for a long time and need to make some progress. Please help.
Thanks,
Cory
In my personal opinion there is no "best" way, but here's what I always do:
1. Check main settings
2. Check main logfiles
3. Check database
First you have to check the main settings, like data sources, OC4J-settings and JVM-settings. A type-o in your settings could kill your deployment. Also, if you are using jms, make sure that the correct topics are registered in jms.xml If all is o.k., then proceed to step 2.
Secondly you should check the standard out for the OC4J where you are deploying the application. This is located at $ORACLE_HOME/opmn/logs/$OC4J_NAME_default_island_1. You can also redirect the standard out by setting de -out parameter in the server settings. This should also contain some helpfull clues (like missing references to property files, typ-o's, wrong classpath, etc.)
Finally if all this is OK and you application still isn't starting (but by then it is deployed) you should check the state of the database. It should be up and running, and containing the correct version of the application's datamodel. Removing rows from quartz tabels (if used) also helps while redeploying.
This is roughly my starting debugging route. Does this give you any pointers?
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>
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"Gao Jun" <[email protected]> wrote:
>Is there any sample code? Thanks
>
>Best Regards,
>Jun Gao
>
>"Xiang Rao" <[email protected]> wrote in message
>news:[email protected]...
>>
>> Sure. You can use the Weblogic management APIs to query ServerBean.
>>
>>
>> "Me" <[email protected]> wrote:
>> >
>> >Thanks for your reply, i was hoping to find a better way for example
>> >a class in
>> >weblogic API.
>> >
>> >Thanks
>> >
>> >"Xiang Rao" <[email protected]> wrote:
>> >>
>> >>Physical: InetAddress.getLocalHost().getHostName()
>> >>Weblogic: System.getProperty("weblogic.Name");
>> >>
>> >>
>> >>"Me" <[email protected]> wrote:
>> >>>
>> >>>Hi,
>> >>> I have a servlet in a web application that is deployed to a
>cluster,
>> >>>just
>> >>>wondering what is the best way to get the name of the node that
>the
>> >>server
>> >>>is
>> >>>running on at run time??
>> >>>
>> >>>Thanks
>> >>
>> >
>>
>
>
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>
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[JHeadstart 10.1.3 build 78]
[JDeveloper 10.1.3 SU4]
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What's the best way for a web app to handle logins and sessions?
I'm deploying in JBoss, using JSF. As is often the case, I keep User information in an entity bean. My question is, what's the best way to handle this bean?
My inclination is to create a login page with a LoginBackingBean atached to it. When the user attempts to log in, it will see if there is a User entity bean that corresponds to the given name and password. If there is no User bean that matches, obviously we show an informative error screen.
But what happens if there is a valid user?
In the plain old Servlet world (without EJB / J2EE) I would just put the User object (it's an object, not an EJB) into the HttpSession, and I would create a Filter that would check for the presence of that User object, and I would map the filter to something like /members/*, and that would be it. I would use Hibernate to persist the User object, and there would also be a filter that creates a Hibernate session and stores it in the Request so that the User object would work and persist.
How do I do this within the J2EE / EJB world?
My first thought would be to just do the same thing. Install the User bean into the HttpSession, and create a filter and do all the same stuff. Is that the right way to do it? It would work pretty well with JSF because I could just access things in the normal JSF way: #{user.firstName} would find the "user" object in the HttpSession scope. So that's good.
One question that comes up from that is if the user makes some change to the User object that is in the Session scope, will the EJB automatically do the right thing and make those changes persistent? Is there anything else I need to do?
I'm new to the EJB world, but from what I can see so far, it seems like it's the best way to think about a web application.
Thankshi ,
i think the best way is to create java beans ,in that bean call your EJB ,
and check the validation over there.
and make that bean scope to session.
in each and everypage try to check the session ,if it is not valid then forward to your login page...
otherwise continue to give access to him like guest
Regards,
AfTaB -
What is the best way to merge a file content into log file
What is the best way to merge a file content into log file.
In worst case, I will read the file line by line as string, then use
logger.info(lineString)to output to log file.
However, is there better way to do this?
The eventual log file will be something like:
log message 1
log message 2
content from file line 1
content from file line 2
content from file line 3
log message 3
log message 4ThanksJohn618 wrote:
Thank you and let me explain:
1. What do you mean by better?
I would like to see better performance. read line by line and log each line as string can be slow. Did you measure this and determine that it is actually a problem for your application? Or are you guessing?
Regardless of what you do you are still going to need to read the file.
>
2.The only better way I can think of is not having to do it, but I assume you have a very good reason to want to do this.
Yes, I have to do it beacuse the requirement is to have that file content be part of logging.
Any idea?How is it supposed to be part of it? For example which of the following is better?
File AAA - contents
First Line
Second Line XXX
Log 1
2009-03-27 DEBUG: Random preceding line
2009-03-27 DEBUG: First Line
2009-03-27 DEBUG: Second Line XXX
2009-03-27 DEBUG: Random following line
Log 2
2009-03-27 DEBUG: Random preceding line
2009-03-27 DEBUG: ----- File: AAA -------------
First Line
Second Line XXX
2009-03-27 DEBUG: Random following lineBoth of the above have some advantages and disadvantages.
The first in a mult-threaded app can end up with intermittent log entries in between lines, so having log lines with thread ids becomes important.
The first can be created by reading one line at a time and posting one at a time.
The second can be created by reading the entire file as a single string and then posting using a single log statement. -
What is the best way to allow one to send an email? Confused.
Hi,
I researched on the forum for the ability to have someone click a button and be able to have a blank email pop up. I use to use this all the time.
However my question is since Outlook Express (and for that matter now Windows mail) are no longer included in the new operatings systems ... meaning everyone has to buy a mail program ... what is the best way to have someone send an email? I am particularly not fond of forms and would rather have them be able to have an email pop up.
However now you will miss a lot of people ... I use Windows mail thus the Outlook express code gives me an error.
THUS MY QUESTION:
Is there general code (and if so what is it?) that allows a person to click a button and send an email no matter what type email program they have?
If not is there an other way to accomplish this?
If not, if I must use a form/action script 2.0 ... does anyone have a sure-fire 2.0 script that is easy to use/debug/modify?
THANKS.I don't understand what you mean by "be able to have blank email pop up" but Yes you can send an email without the need of any email programs through ActionScript via PHP through the POST method. There is a simple example in http://www.kirupa.com/developer/actionscript/flash_php_email.htm
Maybe you are looking for
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