Migration from Oracle 6i to Oracle 10g

I need to migrate my forms and reports from Oracle 6i to Orcale 10g, and then update the Oracle software on my pc. Any suggestion for a migration tool for the forms and reports? Thanks in advance.

Hi,
take a look at:
using or converting forms developed in forms6i to forms10g
http://www.degenio.com/index_files/Challenges_migrating_Forms_10g.pdf
greetings,
Sim

Similar Messages

Manually Migrating from Oracle 10g to 11g

Hello, I'm currently a student in an Oracle DBA class. I'm totally new to the Oracle world.
One of our final assignments concerns upgrading Oracle instances without the use of DBUA.
I've currently got Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 and am trying to upgrade to 11.1.0.7.0
This is all inside of VirtualBox, running Windows Server 2008. I've been using 10g with absolutely no issues for the duration of this class.
I successfully installed 11g, choosing to install the software only and not use dbua.
I changed my environment variables to point towards the 10g installation; ORACLE_HOME, ORACLE_SID, PATH, and LD_LIBRARY_PATH.
Then logged into 10g's SQLPlus and ran utlu111i.sql, which ran successfully. I issued a shutdown immediate and exited SQLPlus.
Changed my environment variables to point towards the 11g home and set ORACLE_SID as the 10g database name. I was able to log into 11g's SQL plus, was told I was connected to an idle instance, which I expected. I issued a startup upgrade command, and then attempted to run catupgrd.sql, but got an error stating that I had to run the script from 11g.
If I don't set the environment variables then when I try to log into 11g's sqlplus, I get an ORA-12560: TNS:protocol adapter error... I've tried reinstalling 11g from scratch, but to no avail. My instructor and I have been emailing back and forth frequently over the past few days but we have not been able to reach a solution, so I thought I would see if I could pick your brains.
Here's all of the terminal output from the process:
C:\Users\Administrator>sqlplus
SQL*Plus: Release 10.2.0.3.0 - Production on Fri Apr 29 20:15:09 2011
Copyright (c) 1982, 2006, Oracle. All Rights Reserved.
Enter user-name: connect /as sysdba
Enter password:
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Production
With the Partitioning, OLAP and Data Mining options
SQL> @?
SP2-0310: unable to open file "C:\270Oracle.sql"
SQL> @C:\NewCIS270\product\11.1.0\db_1\rdbms\admin\utlu111i
Oracle Database 11.1 Pre-Upgrade Information Tool 04-29-2011 20:16:16
Database:
--> name: KYLMAN
--> version: 10.2.0.3.0
--> compatible: 10.2.0.3.0
--> blocksize: 8192
--> platform: Microsoft Windows IA (32-bit)
--> timezone file: V4
Tablespaces: [make adjustments in the current environment]
--> SYSTEM tablespace is adequate for the upgrade.
.... minimum required size: 729 MB
.... AUTOEXTEND additional space required: 249 MB
--> UNDOTBS1 tablespace is adequate for the upgrade.
.... minimum required size: 417 MB
.... AUTOEXTEND additional space required: 352 MB
--> SYSAUX tablespace is adequate for the upgrade.
.... minimum required size: 455 MB
.... AUTOEXTEND additional space required: 215 MB
--> TEMP tablespace is adequate for the upgrade.
.... minimum required size: 61 MB
.... AUTOEXTEND additional space required: 33 MB
--> EXAMPLE tablespace is adequate for the upgrade.
.... minimum required size: 78 MB
Update Parameters: [Update Oracle Database 11.1 init.ora or spfile]
-- No update parameter changes are required.
Renamed Parameters: [Update Oracle Database 11.1 init.ora or spfile]
-- No renamed parameters found. No changes are required.
Obsolete/Deprecated Parameters: [Update Oracle Database 11.1 init.ora or spfile]
--> "background_dump_dest" replaced by "diagnostic_dest"
--> "user_dump_dest" replaced by "diagnostic_dest"
--> "core_dump_dest" replaced by "diagnostic_dest"
Components: [The following database components will be upgraded or installed]
--> Oracle Catalog Views [upgrade] VALID
--> Oracle Packages and Types [upgrade] VALID
--> JServer JAVA Virtual Machine [upgrade] VALID
--> Oracle XDK for Java [upgrade] VALID
--> Oracle Workspace Manager [upgrade] VALID
--> OLAP Analytic Workspace [upgrade] VALID
--> OLAP Catalog [upgrade] VALID
--> EM Repository [upgrade] VALID
--> Oracle Text [upgrade] VALID
--> Oracle XML Database [upgrade] VALID
--> Oracle Java Packages [upgrade] VALID
--> Oracle interMedia [upgrade] VALID
--> Spatial [upgrade] VALID
--> Data Mining [upgrade] VALID
--> Expression Filter [upgrade] VALID
--> Rule Manager [upgrade] VALID
--> Oracle OLAP API [upgrade] VALID
Miscellaneous Warnings
WARNING: --> Database contains stale optimizer statistics.
.... Refer to the 11g Upgrade Guide for instructions to update
.... statistics prior to upgrading the database.
.... Component Schemas with stale statistics:
.... SYS
.... OLAPSYS
.... SYSMAN
.... CTXSYS
.... XDB
WARNING: --> Database contains schemas with objects dependent on network
packages.
.... Refer to the 11g Upgrade Guide for instructions to configure Network ACLs.
WARNING: --> EM Database Control Repository exists in the database.
.... Direct downgrade of EM Database Control is not supported. Refer to the
.... 11g Upgrade Guide for instructions to save the EM data prior to upgrade.
PL/SQL procedure successfully completed.
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Pr
oduction
With the Partitioning, OLAP and Data Mining options
C:\Users\Administrator>set ORACLE_HOME=C:\NewCIS270\product\11.1.0\db_1
C:\Users\Administrator>set ORACLE_SID=KYLMAN
C:\Users\Administrator>set PATH=%ORACLE_HOME%\bin
C:\Users\Administrator>sqlplus "/as sysdba"
SQL*Plus: Release 11.1.0.7.0 - Production on Fri Apr 29 20:22:49 2011
Copyright (c) 1982, 2008, Oracle. All rights reserved.
Connected to an idle instance.
SQL> startup upgrade;
ORACLE instance started.
Total System Global Area 440401920 bytes
Fixed Size 1291072 bytes
Variable Size 146803904 bytes
Database Buffers 289406976 bytes
Redo Buffers 2899968 bytes
Database mounted.
Database opened.
SQL> @?
SP2-0310: unable to open file "C:\NewCIS270\product\11.1.0\db_1.sql"
SQL> @?/rdbms/admin/catupgrd
DOC>#######################################################################
DOC>#######################################################################
DOC>
DOC> The first time this script is run, there should be no error messages
DOC> generated; all normal upgrade error messages are suppressed.
DOC>
DOC> If this script is being re-run after correcting some problem, then
DOC> expect the following error which is not automatically suppressed:
DOC>
DOC> ORA-00001: unique constraint (<constraint_name>) violated
DOC> possibly in conjunction with
DOC> ORA-06512: at "<procedure/function name>", line NN
DOC>
DOC> These errors will automatically be suppressed by the Database Upgrade
DOC> Assistant (DBUA) when it re-runs an upgrade.
DOC>
DOC>#######################################################################
DOC>#######################################################################
DOC>#
DOC>######################################################################
DOC>######################################################################
DOC> The following statement will cause an "ORA-01722: invalid number"
DOC> error if the user running this script is not SYS. Disconnect
DOC> and reconnect with AS SYSDBA.
DOC>######################################################################
DOC>######################################################################
DOC>#
no rows selected
DOC>######################################################################
DOC>######################################################################
DOC> The following statement will cause an "ORA-01722: invalid number"
DOC> error if the database server version is not correct for this script.
DOC> Shutdown ABORT and use a different script or a different server.
DOC>######################################################################
DOC>######################################################################
DOC>#
SELECT TO_NUMBER('MUST_BE_11_1') FROM v$instance
ERROR at line 1:
ORA-01722: invalid number
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Pr
oduction
With the Partitioning, OLAP and Data Mining options
C:\Users\Administrator>
Edited by: 855732 on Apr 29, 2011 6:59 PM

Hi,
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Pr
oduction
With the Partitioning, OLAP and Data Mining options
Your instance is started from the 10g ORACLE_HOME. You mentioned you started it from the 11g ORACLE_HOME but it's not the case.
Here is an example with a 10gR2 database started from a 11gR2 ORACLE_HOME :
SQL> startup upgrade pfile =/u01/app/oracle/product/10.2.0/db_1/dbs/initP102.ora
ORA-32006: BACKGROUND_DUMP_DEST initialization parameter has been deprecated
ORA-32006: USER_DUMP_DEST initialization parameter has been deprecated
ORACLE instance started.
Total System Global Area 167387136 bytes
Fixed Size 1335248 bytes
Variable Size 88080432 bytes
Database Buffers 75497472 bytes
Redo Buffers 2473984 bytes
Database mounted.
Database opened.
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing optionsNotice the Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 part.
In your case it was Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.3.0
To solve the issue follow the official documentation, you have specific actions with oradim etc. to do (it's always a bit more complicated than with Unix/Linux but it's documented) :
http://download.oracle.com/docs/cd/B28359_01/server.111/b28300/upgrade.htm#insertedID8
Best regards
Phil

Database migrated from Oracle 10g to 11g Discoverer report performance issu

Hi All,
We are now getting issue in Discoverer Report performance as the report is keep on running when database got upgrade from 10g to 11g.
In database 10g the report is working fine but the same report is not working fine in 11g.
The query i have changed as I have passed the date format TO_CHAR("DD-MON-YYYY" and removed the NVL & TRUNC function from the existing query.
The report is now working fine in Database 11g backhand but when I am using the same query in Discoverer it is not working and report is keep on running.
Please advise.
Regards,

Pl post exact OS, database and Discoverer versions. After the upgrade, have statistics been updated ? Have you traced the Discoverer query to determine where the performance issue is ?
How To Find Oracle Discoverer Diagnostic and Tracing Guides [ID 290658.1]
How To Enable SQL Tracing For Discoverer Sessions [ID 133055.1]
Discoverer 11g: Performance degradation after Upgrade to Database 11g [ID 1514929.1]
HTH
Srini

What are the Issues in Migration from oracle 8i to oracle 10g

Hi,
Can you let me know what are the issues that i face when i migrate from oracle 8i to oracle 10g. I will be very thankful if you give me a list of issues that you face while migrating from 8i to 10g

In addition to Max's reply, you must be aware that you have to test your applications agains 10g database before you actually upgrade the database.
If you use CBO, it may produce different execution plans for one query when you run it in 8i and 10g. This may affect your application performances, which you don't like to happen.
Also you have to decide how much downtime you can afford during the migration. Can you afford some downtime and how much? If you can't than this makes the situation more complicated.
How big is your database? You may end up only with simple export/import solution using export import utility.
The bottom line is, whatever you decide, you must test your applications running against 10g database before you actually upgrade your database.

MIgration from Oracle 9.2.4.0 to Oracle 10g Release 2 (10.2.0.1.0)

Hello
We are planning to upgrade and migrate from Oracle 9 to Oracle 10. ( both version on windows)
Would be of great help if I could avail the below information.
Most of the Instance are more than 50 gig
1 Should use a EXP / IMP or Should use DBUA ( prefer a safe method )
2.IF DBUA used any idea how much time it should take .
3.Any other method for upgrade.
We are currently in an analysis phase , we do have some instance that are already 10g but were created from scratch.
Thanks for all your help in advance
Cheers

Most of the Instance are more than 50 gig
1 Should use a EXP / IMP or Should use DBUA ( prefer
a safe method )Use DBUA , it is safer then exp/imp
2.IF DBUA used any idea how much time it should take
It depend on database , machine etc. it should not take more then 2-3 Hr
3.Any other method for upgrade.
I always use manual method and feel manual upgrade is safest.
All details is given in Oracle Documentation
Oracle Database Upgrade Guide
# Virag Sharma

Migration from Oracle 9i database to 10g in ECC5

Hi Experts,
We are planning to move our production system which is currently running ECC5 on AIX OS and Oracle 9i database to AIX OS and Oracle 10g database.
Some doubts regarding the above procedure:
1)Is there any possibility of SAP system migration from Oracle 9i to Oracle 10g. If yes, do we need to perform any addinitional steps for that?
2)If the above condition is OK, then what type of system copy should we need to follow: Homogeneous or Heterogeneous? Heterogeneous system copy is ususally done incase of system copy involving different databases. Does that apply for differnt versions too like Oracle 9i and 10g?
Any response is highly appreciated.
Regards,
Sanjay

If i'm using the dbua then the above issue will be solved by dbua itself?Well, DBUA will only perform a sanity check on your current release and if it doesn't pass it will fail. In other words DBUA will not upgrade your 9i release to the proper compatible release that you have to do before upgrading to 10R2.
Personally I never used DBUA, I always prefer manual upgrades, DBUA is good for you bcz it will not allow you to miss any step while upgrading.
What is the size of the database which you are going to upgrade?
Daljit Singh

How to migrate a table from ORACLE 10g to 8i

have table named 'liuxg_tab_01' in 10g.
This morning I exported this table using 'exp' and then tried to imp it into 8i, I failed.
After a while, I created a database link named 'ctf' in 8i which connected to 10g. I issued 'create table test as selct * from liuxg_tab_01@ctf',it returns 'ORA-01723'.
Then I extraced the DDL of 'liuxg_tab_01' from 10g with QUEST TAOD, it's:
CREATE TABLE LIUXG_TAB_01
OWNER VARCHAR2(30 BYTE),
OBJECT_NAME VARCHAR2(30 BYTE),
SUBOBJECT_NAME VARCHAR2(30 BYTE),
OBJECT_ID NUMBER,
DATA_OBJECT_ID NUMBER,
OBJECT_TYPE VARCHAR2(19 BYTE),
CREATED DATE,
LAST_DDL_TIME DATE,
TIMESTAMP VARCHAR2(19 BYTE),
STATUS VARCHAR2(7 BYTE),
TEMPORARY VARCHAR2(1 BYTE),
GENERATED VARCHAR2(1 BYTE),
SECONDARY VARCHAR2(1 BYTE)
But I can not create a table using the upper DDL in 8i if I do not wipe off those "BYTES".
After creation of the table using the upper DDL without those 'BYTES', I sucessfully executed 'insert into LIUXG_TAB_01 select * from liuxg_tab_01@ctf'.
Anyone has a better method to move a table from ORACLE 10g to 8i?

1) The particular version of 8i and 10g in use here would be useful. I'm not sure that Oracle supports database links between any version of 8i and any version of 10g, though, so you're probably lucky that it worked as well as it did.
10g 10.1.0.3.0 and 8i 8.1.7.0.0
2) What version of the export utility did you use? You would need to use the 8i version to generate the dump file to have any chance of working, not the 10g verion.
I use the 'exp' provided with 10g 10.1.0.3.0 and 'imp' with 8i 8.1.7.0.0. I have tried to export data directly from 10g 10.1.0.3.0 using 'exp' provided with 8i 8.1.7.0.0. Failed.
3) Why? Since 8i is desupported, there isn't a lot of call for tools to move data from supported releases to unsupported releases.
We have an 8i DB which is still porivding insentive services. We just wanna migrate some tales from 10g to it.
FYI, NLS_LENGTH_SEMANTICS was introduced in 9i, so it's no suprise that 8i objected to the BYTE keyword in the DDL.
What's FYI :P
Another option would be to generate a CSV file of the data from 10g and use SQL*Loader to load it into 8i. Not sure this would be any easier, though.
Justin
Message was edited by:
user510846

Live migration from oracle 8.0.3.0.0 to oracle 10g

Hello everyone,
I have Oracle 8.0.3.0.0 running on Windows NT platform. I wish to migrate from Oracle 8.0.3.0.0 to Oracle 10g. And I wish to do it without shutting down my Oracle 8 server. Sort of live migration. Since transaction rate is very high. And putting down the server would mean hanging up whole work. Is it possible. If yes what all hardware and software requirements are there? Or Import and Export is the only option,
In anticipation of your guidlines,
Durgesh
919416228922

Durgesh,
 No, you cannot migrate directly from 8.0.3 to 10g (either 10gR1 and 10gR2). Read the upgrade guide which concern your target 10g release :
 Oracle Database Upgrade Guide 10g Release 2 (10.2)
 Oracle Database Upgrade Guide 10g Release 1 (10.1)
 Nicolas.

Upgrading from Oracle 10G standard edition to Oracle 10G enterprise edition

Hi
I want to upgrade from Oracle 10G standard edition to Oracle 10G enterprise edition. Is there any script provided by oracle which I can run on existing Oracle 10G standard edition to upgrade to enterprise edition after completing the licensing formalities or do I need to install Oracle 10g Enterprise edition from scratch and then migrate my data.
Ramanbir S

You will not need to perform any data migration to upgrade to EE. The diffetence between standard en enerprise editions are the features offered. When you upgrade you can use the same set of files you used to install standard edition and just add the enterprise edition features you want to use in the 'Custom' section of the Universal Installer.

Migrate from Oracle Rdb to Oracle 8i

Has anybody out there done a migration from Oracle Rdb (formerly Digital product) to Oracle 8i on a Alpha/OpenVMS platform?
If yes, kindly share your experience.
Thank you very much.

Hi Joyce,
Unfortunately you can't.
Same topic was discussed here:
Oracle RDB to Oracle 10g
Good luck,
Andrei

Changes in webservices while migrating from Oracle App Server to WebLogic

Dear All,
I am developing webservices for a external users.
I am new to webservices.
We were using Oracle Application server to deploy the webservices.
The architecture was as mentioned below
1) A interface class
2) A Implementation class for the above interface class
Now we are planning to migrate from Oracle application server to Weblogic Application server.
I have few doubts about the migration,
1) Will there be any difference between Oracle specific WSDL and WSDL created by Weblogic ant build command
2) As our external parties are referring our SOAP requests ans responses for their implementation, i am concerned about the changes in the SOAP request and response formats. Will there be changes due to application server change?
Oracle app server - Oracle 10g application server version 9.0.4.0
Weblogic appl server - Weblogic application server version 10.3.0.0

Now after creating the WSDL by Weblogic workshop. The previous request XML is not working.
Can someone help soving the below query.
We are in process of upgrading the Oracle 10g application server version 9.0.4.0 to Weblogic application server version 10.3.0.0. In the old application server we were using axis specific jars to create the WSDL for the webservices. There are so many third party applications which are accessing our webservices, so we can not change the wsdl, clients accessiong the webservices and the corresponding formats of request and response xml messages. So we need to deploy the same wsdl and for the same we need to deploy axis on to weblogic 10.3. Can you please help us regarding the same.
Qns
1 - If we can deploy the axis on to the Weblogic 10.3
2 - Can we use the same WSDL in the Weblogic server too.
3 - If we use the same WSDL, will it help us to keep the client accessing the webservices, the request xml format, response XML format the same as it is with Oracle 10g application server case.
4 - Please share how to deploy axis on to the Weblogic 10.3 application server.
5 - Please share how we can create EARs that can be deployed on the webserver using axis specific jars.
Thanks and Regards
Manoj

Migration from Oracle Forms to HTML DB ?

Dear all,
is there a tool allowing to migrate from Oracle Forms to HTML DB ?
Thanks.
Best Regards.
Marcello.

Hello.
Thanks for your response.
Here is the motivation.
We have still applications developped with Oracle Forms 6i (old version no more supported). We are investigating for doing the migration with a limited expense to Oracle Forms 10g or HtmlDB.
Another questions are :
Is it possible to migrate from Oracle 6i to Oracle Forms 10g ?
Oracle Forms will still exists ? until when ?
Many thanks for your cooperation.
Best Regards.
Marcello.
Marcello CESARO
ICT Architecture
Application Architect
LA POSTE / DE POST
WTC II - desk 13W098
Chaussée d'Anvers 59
1000 Bruxelles
Tél. : 0032 2 2047172
GSM : 0032 494 575149
E-mail : [email protected]

How to run a report from oracle 10g form in .csv format

dear all,
how to run a report from oracle 10g form in .csv format? i've already run in pdf & excel format.
i'm using
SET_REPORT_OBJECT_PROPERTY (ro_report_id, report_desformat, 'PDF'); --for pdf
SET_REPORT_OBJECT_PROPERTY (ro_report_id, report_desformat, 'SPREADSHEET'); ---for excel
Please Help..

i have already tried.
but the report show in htm or html format. that file will not save into csv. please help.

Retrieve data from a large table from ORACLE 10g

I am working with a Microsoft Visual Studio Project that requires to retrieve data from a large table from Oracle 10g database and export the data into the hard drive.
The problem here is that I am not able to connect to the database directly because of license issue but I can use a third party API to retrieve data from the database. This API has sufficient previllege/license permission on to the database to perform retrieval of data. So, I am not able to use DTS/SSIS or other tool to import data from the database directly connecting to it.
Here my approach is...first retrieve the data using the API into a .net DataTable and then dump the records from it into the hard drive in a specific format (might be in Excel file/ another SQL server database).
When I try to retrieve the data from a large table having over 13 lacs records (3-4 GB) in a data table using the visual studio project, I get an Out of memory exception.
But is there any better way to retrieve the records chunk by chunk and do the export without loosing the state of the data in the table?
Any help on this problem will be highly appriciated.
Thanks in advance...
-Jahedur Rahman
Edited by: Jahedur on May 16, 2010 11:42 PM

Girish...Thanks for your reply...But I am sorry for the confusions. Let me explain that...
1."export the data into another media into the hard drive."
What does it mean by this line i.e. another media into hard drive???
ANS: Sorry...I just want to write the data in a file or in a table in SQL server database.
2."I am not able to connect to the database directly because of license issue"
huh?? I never heard this question that a user is not able to connect the db because of license. What error / message you are getting?
ANS: My company uses a 3rd party application that uses ORACLE 10g. And my compnay is licensed to use the 3rd party application (APP+Database is a package) and did not purchased ORACLE license to use directly. So I will not connect to the database directly.
3.I am not sure which API is you are talking about, but i am running an application of the visual studio data grid or similar kind of controls; in which i can select (select query) as many rows as i needed; no issue.
ANS: This API is provided by the 3rd party application vendor. I can pass a query to it and it returns a datatable.
4."better way to retrieve the records chunk by chunk and do the export without loosing the state of the data in the table?"
ANS: As I get a system error (out of memory) when I select all rows in a datatable at a time, I wanted to retrieve the data in multiple phases.
E.g: 1 to 20,000 records in 1st phase
20,001 to 40,000 records in 2nd phase
40,001 to ...... records in 3nd phase
and so on...
Please let me know if this does not clarify your confusions... :)
Thanks...
-Jahedur Rahman
Edited by: user13114507 on May 12, 2010 11:28 PM

ERROR while connecting to Netezza Database from oracle 10g via dblink.

Gurus,
We are trying to connect to Netezza DB from oracle 10g DB.. We successfully establised ODBC connection but unable to retrieve data over the dblink connected from oracle to Netezza. We get this error.. Please HELP ASAP!!!!!!!!
ORA-28500: connection from ORACLE to a non-Oracle system returned this message:
Server and/or port attributes are empty {HY000,NativeErr = 33}

Manik wrote:
We are trying to connect to Netezza DB from oracle 10g DB.. We successfully establised ODBC connection but unable to retrieve data over the dblink connected from oracle to Netezza. We get this error.. Please HELP ASAP!!!!!!!!
ORA-28500: connection from ORACLE to a non-Oracle system returned this message:
Server and/or port attributes are empty {HY000,NativeErr = 33}Always test ODBC client connectivity on the Oracle server to the remote and foreign database, first. Use the isql ODBC client command line interface (as the oracle or grid o/s user).
If this does not work, then Oracle HSO will also not work.
Once you have confirmed that this is working, then configure the HSO service for Oracle.
If that fails, enables ODBC client tracing for that HSO service (in the init file for that service) to see exactly what ODBC calls Oracle is making and which of these are failing.

Porting from Oracle 10g AS to Oracle 11g Weblogic server

Hi,
I am trying to port J2EE applicatin from Oracle 10g AS to Oracle 11g Weblogic Server. I have jsp files which contains sql code embedded to fetch data from the DB. The components used in this application are Java, JSP, Servlets and Stateless session beans.
I have a commonjar which is used to create DB Connection manager and other common stuff which is present inside web-inf/lib. My application is packaged as an ear and which contains the war and different ejb-project.jar files. When the Stateless bean is trying to call the ConnectionManager class, which is present inside the commonjar inside web-inf/lib, I get InvocationTargetException. When I debugged in Eclipse, I see that that inside ejb the reference ConnectionManager, the variable cannot be resolved. So I guess at runtime, ejb is not able to locate ConnectionManager Class.
I tried to copy this jar to APP-INF/lib and the same jar is present inside web-inf/lib as well. In that case what happens is the jsp fails with the exception ConnectionManager cannot be resolved.
How can I make the ejb work by keeping the commonjar inside web-inf/lib alone.
Any help or suggestions?
Thanks
Raj

The classloader hierarchy in WLS looks like this (arrows denote inheritance direction):
Java bootstrap classloader <- Java CLASSPATH classloader <- WLS $DOMAIN_HOME/lib classloader <- Application (e.g., EAR) classloader <- web app classloader <- single JSP classloader
The Connection Manager is loaded by the web app classloader while the EJBs are loaded by the application classloader so the EJBs have no visibility to the classes loaded by the child (web app) classloader.
The simplest fix might be to move the Connection Manager jar file to the EAR file's APP-INF/lib directory.
One word of caution though, you need to be using WebLogic Server's Data Sources and JDBC connection pooling to make sure that you correct transactional behavior if the application is doing any sort of JTA transaction (regardless of whether the JTA transactions are using XA or not...).
Hope this helps,
Robert

Migration from Oracle 6i to Oracle 10g

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