Running a BC4J JSP application for Oracle Lite on OC4J

Hi,
My BC4J JSP application is working with Oracle and Oracle Lite on Apache (Oracle 8i Personal Edition) and on Tomcat 3.2. The same BC4J's could be used from the BC4J Tester as well.
But if I run the application on OC4J (standalone and embedded in JDeveloper 9i RC1 and RC2) using Oracle Lite, a Fatal Internal Error (or with JDK1.2 a NullPointerException) occurs.
I think I found the reason:
1. the Java Trigger in Oracle Lite and
2. the Timestamp used in Oracle Lite instead of Date.
My problem is, that I can't find any information about configuration of OC4J so that it could work with Oracle Lite as well as Apache and Tomcat.
Claudia

The tell tale sign that the application is communicating with the running cache server is the membership information that is logged. In your previous running of the example you would have "members=1" embedded in the logging. From the sounds of what you are doing, you'd expect this to be different as the application would be joining a running instance. Check out section 1.3 of this doc on the system you are using.
http://download.oracle.com/docs/cd/E15357_01/coh.360/e15831/installcoh.htm#BABIHHFJ
Cheers,
Jay

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Gina,
I would recommend checking out the following HowTo's recently posted on OTN by the JDev Team. They may indicate where your problem is occuring and how to fix it:
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How to solve the error while Deploy a BC4J JSP Application using tomcat,

hello,
how to avoid the following error?
i am using jdevloper for devloping jsp applications.
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=============================
type Exception report
message Internal Server Error
description The server encountered an internal error (Internal Server Error) that prevented it from fulfilling this request.
exception
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at org.apache.jasper.compiler.Parser.parse(Parser.java:1103)
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====================
thanks
pullareddy

I had very similar problems with adding the correct JDeveloper .jar files to Tomcat's lib folder, but did eventually resolve my issues.
The problem I am having now, however, is the following error message:
Error Message: oracle.jbo.html.RequestParameters.addParameter(Ljava/lang/String;Ljava/lang/String;)V
Yes, I have deployed the bc4jhtml.jar file from JDeveloper to Tomcat\common\lib!
My web-app is a very simple BC4J JSP application. I have one BC4J component in its own project and JAR file, and one JSP referencing that BC4J component - I deploy the BC4J JAR along with the WAR file from the JSP project. Needless to say, the JSP works fine within JDeveloper..!
I'm using JDev 9.0.3 and Tomcat 4.1.12. Does anyone have any suggestions?
Thanks,
S.

Jsf application with oracle lite webtogo

hello...
i have developed an application using jsf-adf bc technology in jdeveloper and then deployed it on mobile server.During development connected it to a oracle database .Before deployment changed the database connection to oracle lite using jdbc:polite:webtogo in application module configurations.But this application when opened in oracle lite client OC4J is not showing up.Please tell me how the connection has to be made to oracle lite database before deployment in jdeveloper so that the application works on the oracle lite OC4J client.

Could u please tell me where to give the code u have mentioned.I have developed using jsf adf/bc and before deployment changed the application module configurations to oracle lite database connections.After i synced,i have got the application to the client.when i click on the link,Its giving me the following errors:
500 Internal Server Error
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Issues with deploying BC4J/JSP applications on OC4J

To everyone who's been having problems deploying BC4J/JSP applications to OC4J.
We are aware that you're having problems deploying to OC4J, and we're working on them. OC4J was not available in time for us to add support for OC4J deployment to the JDeveloper 3.2.3 release. In addition there are some bugs in the first release of OC4J that have an impact on BC4J applications. This note describes the issues, and how we plan to address them.
Issue 1: Classpath problems
People have been getting "class not found" or "properties file not found" errors when they try to run their JSP. The answer is to make sure that all relevant archives and your JSP's .properties file are in the OC4J classpath - there's a note addressing the .properties file problem at http://technet.oracle.com:89/ubb/Forum99/HTML/000028.html. In general though, setting up the classpath can be tricky.
Issue 2: JSP TAG NOT RELEASED ON END TAG. SAME TAG IS REUSED.
This issue affects JSP pages whose behaviour relies on a tag instance being cleaned up as a result of release() being called.
Your tag will not be released, and subsequent instances of the tag will reuse the first instance, rather than instantiating a new
one.
Issue 3:JSP SCRIPTABLE VARIABLE NULL
A scriptable variable set in a tag cannot be accessed by a scriptlet. For example, this JSP code will throw a
NullPointerException, because the scriptlet cannot access the value of resultRow:
<jbo:Row id="resultRow" action="CURRENT" datasource="customer_vo1" />
<%
session.putValue("FIRSTNAME", resultRow.getAttribute("Firstname").toString());
%>Workaround: Add a line of code at the beginning of the scriptlet to explicitly get the variable's value from the page context, for
example:
<jbo:Row id="resultRow" action="CURRENT" datasource="customer_vo1" />
<%
resultRow = (oracle.jbo.Row)pageContext.findAttribute("resultRow");
session.putValue("FIRSTNAME", resultRow.getAttribute("Firstname").toString());
%>
What we plan to do
To address issue 1, we're currently testing a utility that installs the BC4J runtime libraries to OC4J, and provides a script to start OC4J with the correct classpath. We plan to post this by the end of this week, along with instructions for deploying a BC4J application to OC4J; deployment will be a lot simpler after running the utility.
To address issues 2 and 3, we're working on a second utility that installs BC4J runtime and provides a fix to the JSP compiler. We plan to post this second utility by the end of next week.
We do apologise for the problems you're having; please bear with us as we work on making it easier for you to deploy BC4J applications to OC4J.
Thanks
Blaise

Hi, I have been trying desparately to deploy
a simple example JDeveloper application for months and months.
I HAVE NEVER BEEN SUCCESSFUL IN DEPLOYING ANYTHING.
I don't know much about webservers and I am relying
on the instructions from JDeveloper help and this website.
I have already tried Apache, and WebLogic
because there are instructions in the JDev help.
No luck.
Now I am trying to use OC4J on 9ias because there are instructions.
I have read the instructions about how to install a BC4J
app on OC4J about 25 times, but I can't get this thing to work.
It works fine inside of JDeveloper.
I create a BC4J project using the scott
schema (just the dept and emp tables).
Then I create an empty project for my JSP client.
I choose JSP Application from the web
objects and it connects to my BC4J project.
As I say, when I run it in JDeveloper, there is no problem.
In the instructions for installing BC4J
in OC4J, it first says install JDev 3.2.3 and OC4J.
This is done, and it tested fine.
Then it says to install the deployment software.
No problem.
But when I deploy the app according to the instructions,
it just hangs (like Rick Wang's program did).
The main.jsp page loads and displays correctly,
but when I click on the links to the DeptView.jsp
or EmpView.jsp it just hangs.
Here is the entire batch file I'm using
to start OC4J: cd c:\oracle_9ias\j2ee\home
set CLASSPATH=%CLASSPATH%;c:\oracle_9ias\j2ee\home
set CLASSPATH=%CLASSPATH%;c:\oracle_9ias\j2ee\home\lib
set CLASSPATH=%CLASSPATH%;c:\oracle_9ias\j2ee\home\default-web-app\lib
set CLASSPATH=%CLASSPATH%;c:\oracle_9ias\j2ee\home\classes
set CLASSPATH=%CLASSPATH%;c:\oracle_9ias\j2ee\home\lib\classes12.jar
set CLASSPATH=%CLASSPATH%;c:\oracle_9ias\j2ee\home\lib\xmlparserv2.jar
set CLASSPATH=%CLASSPATH%;c:\oracle_9ias\j2ee\home\lib\jdev-rt.zip
set CLASSPATH=%CLASSPATH%;c:\oracle_9ias\j2ee\home\lib\jbojdbcpatch.zip
set CLASSPATH=%CLASSPATH%;c:\oracle_9ias\j2ee\home\lib\connectionmanager.zip
set CLASSPATH=%CLASSPATH%;c:\oracle_9ias\j2ee\home\lib\jbohtml.zip
set CLASSPATH=%CLASSPATH%;c:\oracle_9ias\j2ee\home\lib\jboimdomains.zip
set CLASSPATH=%CLASSPATH%;c:\oracle_9ias\j2ee\home\lib\ordim817.zip
set CLASSPATH=%CLASSPATH%;c:\oracle_9ias\j2ee\home\lib\ordvir817.zip
set CLASSPATH=%CLASSPATH%;c:\oracle_9ias\j2ee\home\lib\ordhttp.zip
set CLASSPATH=%CLASSPATH%;c:\oracle_9ias\j2ee\home\lib\jbomt.zip
set CLASSPATH=%CLASSPATH%;c:\oracle_9ias\j2ee\home\lib\jbodomorcl.zip
set CLASSPATH=%CLASSPATH%;c:\oracle_9ias\j2ee\home\lib\jboremote.zip
set CLASSPATH=%CLASSPATH%;c:\oracle_9ias\j2ee\home\lib\jndi.jar
set CLASSPATH=%CLASSPATH%;c:\oracle_9ias\j2ee\home\lib\jbodatum12.zip
set CLASSPATH=%CLASSPATH%;c:\oracle_9ias\j2ee\home\lib\al_BC4J.jar
java -cp C:\oracle_9ias\j2ee\home\orion.jar;%CLASSPATH%
com.evermind.server.ApplicationServer
pause
The file al_BC4J.jar contains my application.properties file
and my connections.properties file, as well as my business components.
All of the files referenced in my classpath are
present in my c:\oracle_9ias\j2ee\home\lib directory.
I noticed that Raghu's classpath contains a file called jdev.jar
So does the classpath of another fellow who says
he was successful in deployment (his name is Jeffrey Jackson).
I searched my JDev_3.2.3 for this file and found it nowhere.
I also searched my OC4J home and my 9iAS for this file and
found it nowhere.
It is nowhere on my C:\.
Is this file necessary?
I will also try removing my application.properties file
and my connections.properties file from my BC4J .jar file
and put them in a separate .jar file at the root level (as Raghu did).
However, Jeffery Jackson did not do this and says he was
successfull in deployment.
***DO I NEED TO JAR UP ANY OF MY THE FILES FROM the JSP
FOLDER IN JDevHome\myhtml???***
***or place them in the classpath?***
I have read over all of the discussions at: http://technet.oracle.com:89/ubb/Forum2/HTML/008232.html
and http://technet.oracle.com:89/ubb/Forum99/HTML/000028.html
many, many times.
Can anyone help me?

Deploy BC4J/JSP applications on OC4J

I am trying to deploy JDeveloper3.2 BC4J/JSP applications on OC4J. However, I have no lucky at all. My OC4J will hang when I tried to run my JSP applications.
Does this only happen to me? Any suggestion will be appreciated.
null

I've followed the instructions in the "How TO Deploy a BC4J Application to an Oracle9iAS J2EE Container in Local Mode" again. The OC4J still hung. I turn on the -Djbo.debugoutput switch this time. I used the following line to startup the OC4J.
java -Djbo.debugoutput=console -cp C:\oc4j\j2ee\home\orion.jar;
C:\oc4j\j2ee\home\lib\classes12.jar;
C:\JDev3.2_BC4Jlib\xmlparserv2.jar;
C:\JDev3.2_BC4Jlib\jdev-rt.zip;
C:\JDev3.2_BC4Jlib\jbojdbcpatch.zip;
C:\JDev3.2_BC4Jlib\connectionmanager.zip;
C:\JDev3.2_BC4Jlib\jbohtml.zip;
C:\JDev3.2_BC4Jlib\jboimdomains.zip;
C:\JDev3.2_BC4Jlib\ordim817.zip;
C:\JDev3.2_BC4Jlib\ordvir817.zip;
C:\JDev3.2_BC4Jlib\ordhttp.zip;
C:\JDev3.2_BC4Jlib\jbomt.zip;
C:\JDev3.2_BC4Jlib\jbodomorcl.zip;
C:\JDev3.2_BC4Jlib\jboremote.zip;
C:\JDev3.2_BC4Jlib\jndi.jar;
C:\JDev3.2_BC4Jlib\jbodatum12.zip;
C:\JDev3.2_BC4Jlib\;
C:\JDev3.2_BC4Jlib\bc4j_scott.jar
com.evermind.server.ApplicationServer
I got the following message from my console:
(The OC4J hung at [132]..)
Loading from CLASSPATH bc4j_scott_bc4j_scott_Bc4j_scottModule.properties
Diagnostics: Routing diagnostics to standard output (use -Djbo.debugoutput=silent to remove)
Successfully loaded properties file using: getResourceAsStream("/oracle/jbo/common/Diagnostic.prop
erties");
[00] Diagnostic Properties: Timing:false Functions:false Linecount:true Threshold:6
[01] CommonMessageBundle (language base) being initialized
[02] Stringmanager using default locale: 'null'
[03] Creating a new pool instance
[04] BC4JDeployPlatform: LOCAL
[05] Propertymanager: searching for file and system based properties
[06] {{ begin Loading BC4J properties
[07] -----------------------------------------------------------
[08] BC4J Property jbo.default.language='en' -->(MetaObjectManager) from System Default
[09] BC4J Property jbo.default.country='US' -->(MetaObjectManager) from System Default
[10] BC4J Property DeployPlatform='LOCAL' -->(SessionImpl) from Client Environment
[11] Skipping empty Property ConnectionMode from System Default
[12] Skipping empty Property HostName from System Default
[13] Skipping empty Property ConnectionPort from System Default
[14] Skipping empty Property ApplicationPath from System Default
[15] Skipping empty Property java.naming.security.principal from System Default
[16] Skipping empty Property java.naming.security.credentials from System Default
[17] BC4J Property jbo.use.pers.coll='false' -->(SessionImpl) from System Default
[18] BC4J Property jbo.pers.max.rows.per.node='70' -->(SessionImpl) from System Default
[19] BC4J Property jbo.pers.max.active.nodes='10' -->(SessionImpl) from System Default
[20] BC4J Property jbo.pcoll.mgr='oracle.jbo.pcoll.OraclePersistManager' -->(SessionImpl) from Sys
tem Default
[21] BC4J Property jbo.fetch.mode='AS.NEEDED' -->(MetaObjectManager) from System Default
[22] Skipping empty Property JBODynamicObjectsPackage from System Default
[23] BC4J Property MetaObjectContextFactory='oracle.jbo.server.xml.DefaultMomContextFactory' -->(M
etaObjectManager) from /oracle/jbo/server/jboserver.properties resource
[24] BC4J Property MetaObjectContext='oracle.jbo.server.xml.XMLContextImpl' -->(MetaObjectManager)
from /oracle/jbo/server/jboserver.properties resource
[25] BC4J Property java.naming.factory.initial='oracle.jbo.common.JboInitialContextFactory' -->(Se
ssionImpl) from Client Environment
[26] BC4J Property IsLazyLoadingTrue='true' -->(MetaObjectManager) from /oracle/jbo/server/jboserv
er.properties resource
[27] BC4J Property ActivateSharedDataHandle='false' -->(MetaObjectManager) from System Default
[28] Skipping empty Property HandleName from System Default
[29] Skipping empty Property Factory-Substitution-List from System Default
[30] BC4J Property jbo.project='bc4j_scott' -->(MetaObjectManager) from Client Environment
[31] BC4J Property jbo.max.cursors='50' -->(MetaObjectManager) from System Default
[32] BC4J Property jbo.dofai lover='true' -->(MetaObjectManager) from System Default
[33] BC4J Property jbo.doconnectionpooling='false' -->(MetaObjectManager) from System Default
[34] BC4J Property jbo.recyclethreshold='10' -->(MetaObjectManager) from System Default
[35] BC4J Property jbo.passivationstore='null' -->(MetaObjectManager) from System Default
[36] BC4J Property RELEASE_MODE='Reserved' -->(MetaObjectManager) from System Default
[37] BC4J Property jbo.maxpoolcookieage='-1' -->(MetaObjectManager) from System Default
[38] Skipping empty Property PoolClassName from System Default
[39] BC4J Property jbo.maxpoolsize='2147483647' -->(MetaObjectManager) from System Default
[40] BC4J Property jbo.initpoolsize='0' -->(MetaObjectManager) from System Default
[41] BC4J Property jbo.poolrequesttimeout='30000' -->(MetaObjectManager) from System Default
[42] BC4J Property jbo.assoc.consistent='true' -->(MetaObjectManager) from System Default
[43] BC4J Property jbo.SQLBuilder='Oracle' -->(MetaObjectManager) from /oracle/jbo/server/jboserve
r.properties resource
[44] BC4J Property jbo.ConnectionPoolManager='oracle.jbo.server.ConnectionPoolManagerImpl' -->(Met
aObjectManager) from System Default
[45] BC4J Property jbo.TypeMapEntries='Oracle' -->(MetaObjectManager) from /oracle/jbo/server/jbos
erver.properties resource
[46] BC4J Property jbo.jdbc.trace='false' -->(MetaObjectManager) from System Default
[47] BC4J Property oracle.jbo.defineColumnLength='true' -->(MetaObjectManager) from System Default
[48] Skipping empty Property jbo.tmpdir from System Default
[49] Skipping empty Property jbo.server.internal_connection from System Default
[50] Skipping empty Property SessionClass from System Default
[51] Skipping empty Property TransactionFactory from System Default
[52] BC4J Property jbo.debugoutput='console' -->(Diagnostic) from System Property
[53] BC4J Property jbo.debug.prefix='DBG' -->(Diagnostic) from /oracle/jbo/common/Diagnostic.prope
rties resource
[54] BC4J Property jbo.logging.show.timing='false' -->(Diagnostic) from /oracle/jbo/common/Diagnos
tic.properties resource
[55] BC4J Property jbo.logging.show.function='false' -->(Diagnostic) from /oracle/jbo/common/Diagn
ostic.properties resource
[56] BC4J Property jbo.logging.show.level='false' -->(Diagnostic) from /oracle/jbo/common/Diagnost
ic.properties resource
[57] BC4J Property jbo.logging.show.linecount='true' -->(Diagnostic) from /oracle/jbo/common/Diagn
ostic.properties resource
[58] BC4J Property jbo.logging.trace.threshold='6' -->(Diagnostic) from /oracle/jbo/common/Diagnos
tic.properties resource
[59] BC4J Property jbo.jdbc.driver.verbose='false' -->(Diagnostic) from System Default
[60] BC4J Property jbo.ejb.txntimeout='60' -->(SessionImpl) from System Default
[61] BC4J Property jbo.ejb.txntype='global' -->(MetaObjectManager) from System Default
[62] Skipping empty Property oracle.jbo.schema from System Default
[63] Copying unknown Client property (CSSURL='/webapp/cabo/images/cabo_styles.css') to session
[64] Copying unknown Client property (DBconnection='jdbc:oracle:thin:@Oracle_Prod1:1521:p816') to
session
[65] Copying unknown Client property (password='tiger') to session
[66] Copying unknown Client property (JDBCName='rick') to session
[67] Copying unknown Client property (ConfigName='bc4j_scott.Bc4j_scottModule.Bc4j_scottModuleLoca
l') to session
[68] Copying unknown Client property (ImageBase='/webapp/jsimages') to session
[69] Copying unknown Client property (user='rick') to session
[70] Copying unknown Client property (Password='tiger') to session
[71] Copying unknown Client property (ApplicationName='bc4j_scott.Bc4j_scottModule') to session
[72] WARNING: Unused property: LC='Calling Function' found in /oracle/jbo/common/Diagnostic.proper
ties resource
[73] }} finished loading BC4J properties
[74] -----------------------------------------------------------
Diagnostics: Routing diagnostics to standard output (use -Djb o.debugoutput=silent to remove)
[75] Diagnostic Properties: Timing:false Functions:false Linecount:true Threshold:6
[76] JavaVMVersion: 1.3.0_02
[77] JavaVMVendor: Sun Microsystems Inc.
[78] JavaVMName: Java HotSpot(TM) Client VM
[79] OperatingSystemName: Windows 2000
[80] OperatingSystemVersion: 5.0
[81] OperatingSystemUsername: RWANG
[82] Connected to Oracle JBO Server - Version: 3.2.9.76.3
[83] {{+++ id=10000 type: 'BC4J_CREATE_ROOTAM' Create Root Application Module 'bc4j_scott.Bc4j_sco
ttModule'
[84] {{+++ id=10001 type: 'METAOBJECT_LOAD' Loading meta-object: bc4j_scott.Bc4j_scottModule
[85] {{+++ id=10002 type: 'METAOBJECT_LOAD' Loading meta-object: bc4j_scott.bc4j_scott
[86] Loading from /bc4j_scott/bc4j_scott.xml file
[87] Loading from indvidual XML files
[88] Loading the Containees for the Package 'bc4j_scott.bc4j_scott'.
[89] }}+++ End Event10003 null
[90] Loading from /bc4j_scott/Bc4j_scottModule.xml file
[91] }}+++ End Event10002 null
[92] {{+++ id=10003 type: 'METAOBJECT_LOAD' Loading meta-object: bc4j_scott.DeptView
[93] Loading from /bc4j_scott/DeptView.xml file
[94] ViewObjectImpl's default fetch mode = 0
[95] {{+++ id=10004 type: 'METAOBJECT_LOAD' Loading meta-object: bc4j_scott.Dept
[96] Loading from /bc4j_scott/Dept.xml file
[97] Loading Typemap entries from oracle.jbo.server.OracleTypeMapEntries
[98] CSMessageBundle (language base) being initialized
[99] }}+++ End Event10005 null
[100] OracleSQLBuilder reached getInterface
[101] Oracle SQL Builder Version 3.2.0.0.0
[102] }}+++ End Event10004 null
[103] {{+++ id=10005 type: 'BC4J_CREATE_VIEWOBJECT' Create ViewObject 'DeptView'
[104] }}+++ End Event10006 null
[105] {{+++ id=10006 type: 'METAOBJECT_LOAD' Loading meta-object: bc4j_scott.EmpView
[106] Loading from /bc4j_scott/EmpView.xml file
[107] {{+++ id=10007 type: 'METAOBJECT_LOAD' Loading meta-object: bc4j_scott.Emp
[108] Loading from /bc4j_scott/Emp.xml file
[109] }}+++ End Event10008 null
[110] }}+++ End Event10007 null
[111] {{+++ id=10008 type: 'BC4J_CREATE_VIEWOBJECT' Create ViewObject 'EmpView'
[112] }}+++ End Event10009 null
[113] {{+++ id=10009 type: 'METAOBJECT_LOAD' Loading meta-object: bc4j_scott.FkDeptnoLink
[114] Loading from /bc4j_scott/FkDeptnoLink.xml file
[115] }}+++ End Event10010 null
[116] {{+++ id=10010 type: 'METAOBJECT_LOAD' Loading meta-object: bc4j_scott.FkDeptnoAssoc
[117] Loading from /bc4j_scott/FkDeptnoAssoc.xml file
[118] }}+++ End Event10011 null
[119] Created root application module: 'bc4j_scott.Bc4j_scottModule'
[120] Locale is: 'en_US'
[121] }}+++ End Event10001 null
[122] AM pool is establishing an application module connection
[123] Using DatabaseTransactionFactory implementation oracle.jbo.server.DatabaseTransactionFactory
[124] DBTransactionImpl Max Cursors is 50
[125] Oracle SQLBuilder: Registered driver: oracle.jdbc.driver.OracleDriver
[126] {{+++ id=10011 type: 'JDBC_CONNECT' null
[127] Trying connection/2: url='jdbc:oracle:thin:@Oracle_Prod1:1521:p816' info='{user=rick, passwo
rd=tiger}' ...
[128] }}+++ End Event10012 null
[129] Successfully logged in
[130] JDBCDriverVersion: 8.1.7.1.0
[131] DatabaseProductName: Oracle
[132] DatabaseProductVersion: Oracle8i Enterprise Edition Release 8.1.6.0.0 - Production With the
Partitioning option JServer Release 8.1.6.0.0 - Production <---It's hanging here for a very very long time......
Any idea?
null

BC4j/JSP Application not responding after some time - when deployed on 9ias

Hi,
We are using BC4j/jsp application on 9ias. The application is not responding
after some time. We have installed 9ias on PIII(384MB RAM). We tried to accesses
with 10 users, and server is not responding to BC4J/JSP application.
However the server could able to publish the JSP pages with standerad JDBC code even after that.
many many thanks in advance
null

When the application deployed by BC4J/JSP not responding, does the sample JSP application still works? i.e. does any other application respond? Does 1 user respond? Is the database source (JDBC), running Oracle 8.1.7? What is the platform running the database (e.g. local NT database)?

BC4j/JSP Application not responding after some time - when deployed on 9ias BC4j/JSP

Hi,
We are using BC4j/jsp application on 9ias. The application is not responding
after some time. We have installed 9ias on PIII(384MB RAM). We tried to accesses
with 10 users, and server is not responding to BC4J/JSP application.
However the server could able to publish the JSP pages with standerad JDBC code even after that.
Please....help us.........
many many thanks in advance

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Is there any mechanism that cleans up these connections (back down to the initial or some other minimum I would guess) or do they hang around until either the app server or database shuts down?<HR></BLOCKQUOTE>
There is currently no mechanism for reducing the connection pool size after a period of high activity. Recently this has been frequently requested and as such will be implemented in the next production release.
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>We have verified this in manual testing. However, when the load tool script exits it doesn't seem to release resources. We know this because we keep seeing our database connections go up and up as more tests are run. Further, we also seem to see more than one connection per "virtual user". For example, when I connect 5 users to the app in manual testing, I get 5 connections. But, when we run a test using the tool, we get 395 database sessions for 200 users. We are having a bit of difficulty understanding why the behavior is different.<HR></BLOCKQUOTE>
Assuming that the you are performing your manual testing against the same instance of the application on which you are performing your load testing, I would assume that the connections are being released to the pool at the end of the request. One possible reason for the approximate 2:1 ratio between connections and virtual users may be BC4J's use of internal connections. What version of BC4J are you using?
BC4J requires an internal connection to support state management and spill to disk. The internal connections are pooled with the transaction connection and only held for the duration of the persistence operation. However, if the web server is very busy then a large number of synchronous persistence requests may be received which would explain the eventual 2:1 ratio in the pool's high water mark.
If the user start times and think times are staggered in order to reduce the incidence of synchronous persistence requests does the ratio of connections to web sessions stabilize at some lower number (i.e. 1.5:1)

Using MySQL with JDeveloper 3.2 in a BC4J JSP Application

Hi!
I'm trying to create a BC4J JSP application using MySQL.
I'm using the mm.mysql-2.0.4-bin.jar which I've registered in
IDE and ClassPath. I created a connection with the option Other
JDBC.
I tested successfully the connection in the Connection Manager.
After, I created a new project with BC4J. Using the 'tester' I
got an error: no suitable driver.
While editing the created view object I got a SQLException when
I clicked in Attribute Mapping.
How to solve this problem? I realized that other people here had
this kind of problem but nobody gave a definitive solution.
Thanks.

Ok, I'm doing exactly the same Jdevloper BC4J over mySQL.
I got one step further.
In order to solve your problem:
1. Add AddJavaLibFile ../lib/mysql_comp.jar (or whereever
is your mysql driver) in bin/jdev.conf.
resart the application
In that case your driver will be available for all tasks.
It works for me.
My problem:
When I run the Tester for my generated module, I obtain:
No attribute with the Primary key property was found...
Can you emeil me the procedure if you find how to use
BC4J over mysql

Date format for oracle lite client database

hello....
When data is entered opened on the oracle lite webtogo OC4J client is giving the following errors:
JBO-25009: Cannot create an object of type:java.sql.Date with value:2/21/08 12:00 AM
JBO-27014: Attribute CreationDate in AppModule.ApplicantIncomesView1 is required
JBO-27024: Failed to validate a row with key oracle.jbo.Key[85685 ] of type AppModule.ApplicantIncomesView1
Which date format is supported on the OC4J client?The application has been developed using Jdeveloper JSF/ADF BC technology.

user6998712 wrote:
Hi all,
My client has installed Oracle Lite version 10.3.0.3. Oracle Lite Database file (ODB) tends to grow too large. Oracle recommends resizing the Oracle Lite database by running Defrag.exe tool. please post URL where this is documented

Integrating a jsp application with oracle workflow

Hi,
I would like to integrate a jsp application with oracle workflow.
My jsp application use BC4J, and if i want to use the java
interface of workflow i need to have the java.Sql.Connection of
my application.
There are a way of getting this Connection in the BC4J?
thanks
rjc

You can check the source code at:
http://otn.oracle.com/docs/products/oracle9i/doc_library/release2/text.920/a96517/acase.htm#632511
You can also use the JDeveloper wizards that can generate JSP code. You can download them from: http://otn.oracle.com/products/text/
and then click on software (left frame).

Oladoce missing for oracle lite

Does anyone know where the oladoce (ado for oracle lite) should be. I've downloaded oracle lite and can't find the data access component.

We are considering adding support for the other DBs which Oracle has. Lite is on the list. There's no timelines yet.
-kris

XE for Oracle Lite

Is it possible use Oracle XE as back-end Oracle database for Oracle Lite clients?
And how about java support?

Technically it would depend on what dependencies the sync server that Oracle Lite uses. I believe that it has java dependencies, so probably not. I will check with the Oracle Lite developers.
From a license point of view, we will have to decide. Given that we don't see XE as suitable for a master in a replication environment, I doubt that we will see it as suitable for the equivalent functionality in an Oracle Lite environment

Is oracle lite free or is there any license for Oracle Lite 10g for product

Is oracle lite free or is there any license for Oracle Lite 10g for production use ??
-Thanks-

Please note that Oracle Lite is no longer being actively developed, and no further releases are planned. The recommended small footprint database from Oracle is Berkeley DB.
http://www.oracle.com/technetwork/products/berkeleydb/overview/index-085366.html
Eric

How to execute a simple JSP application in Oracle 9iAs WE?

Hi,
How to execute a simple JSP application in Oracle 9iAs WE?
Thanks
Anupama

Please "Preview" your future posts. Your formatting is awful. Especially learn to use the [ code ] tags.
Are you sure DateTime.Now.ToString() returns a string in the format of 'MM/DD/YYYY HH:MI:SS.FF3'?
Fix that and if you still having the problems, debug the actual result of your string.Format() and post that.

Running a BC4J JSP application for Oracle Lite on OC4J

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