Multiple database in the same ADF application

In my application I have to access a legacy database, in addition to the main database. How do I handle multiple database connections. Do I need to manage the JDBC connection to the legacy database myself.
Pranab

Use an AM for each dataconnection and then share the AMs so then can see each others datamodels.
Or you can use jdbc in your code to access the databases.
If would be nice if the adf had a way to connect to any data source set up in the configuration and app server on the fly.

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Transaction across multiple databases in the same BDB environment

Hi,
I have multiple databases and one metadata database all in the same BDB environment. At runtime I want to create an additional database, update this database and update the metadata database in the same environment under one transaction. Are there any issues in having transactions that span multiple databases in the same environment?
Thanks,
Pooja

There is virtually no difference between using multiple databases and a single database in a transaction. Concurrency is determined by other factors such as whether multiple threads access the same records. See the Writing Transactional Applications for more information:
http://www.oracle.com/technology/documentation/berkeley-db/je/TransactionGettingStarted/index.html
--mark

Can you have multiple databases on the same LUN in Exchange 2010?

I'm sure you can but is it possible with exchange 2010 to have multiple databases on the same LUN. We currently have 8 DB's all writing to their own DB drive and separate log drive so 16 drives in total. I need to spin a new DB up this week and
wanted to double check this is possible. I've looked online and cant find anything that I've seen before that says this is possible.
Thanks.

Hi,
Yes, multiple databases could be placed on the same LUN, but it's not recommended.
If you have 2 drives fail at the same time (it happens more than you think), then losing 100% of your DBs is a lot worse than losing one of them or some of them depending on where the failures are.
Here is a similar thread for your reference:
Multiple databases on the same LUN in Exchange 2010
Hope this helps!
Thanks.
Niko Cheng
TechNet Community Support

How do i create multiple databases on the same unix box?

Hello experts.
Please send me some guidelines on how to create multiple databases on the same unix box and how to configure their startups including listeners.
Please also, list me the possible precautions to takes especially if the existing database is a production one!
thanks very much for you reply
Best Regards
Yogeeraj

Hello,
I tried the following:
svrmgrl> startup nomount pfile=I:\d01\oracle\admin\cmttest\pfile\init.ora
then
svrmgrl> CREATE DATABASE cmttest
LOGFILE 'i:\d01\oracle\oradata\cmttest\redo01.log' SIZE
1024K,'i:\d01\oracle\oradata\cmttest\redo02.log' SIZE 1024K
MAXLOGFILES 32
MAXLOGMEMBERS 3
MAXLOGHISTORY 1
DATAFILE 'i:\d01\oracle\oradata\cmttest\system01.dbf' SIZE 50M REUSE
MAXDATAFILES 254
MAXINSTANCES 1
CHARACTER SET WE8ISO8859P1
NATIONAL CHARACTER SET WE8ISO8859P1;
Then when i try to run both databases:
svrmgrl> set instance cmttest
ORA-12500: TNS: Listener failed to start a dedicated process
===================
I am doing something wrong.
please help
Regards
Yogeeraj

Multiple instances of the same APEX application under SSO

Currently we have several applications that are authenticated through Oracle SSO. The apps are authenticating correctly, but I can't be in multiple instances of the same application without having to re-validate through SSO when I move between instances.
Scenario: I'm successfully signed into my "parent" application, app_id 1 through SSO. I click a custom link that opens the "child" application (app_id 2) to view widget "A". When the page is launched I see the usual "Redirecting to the Login Server for authentication" message (verifying that I'm signed in through SSO) and then it succeeds and takes me into app 2, displaying widget A. I click the next link to launch another instance of app 2 with a different APEX session id for viewing widget "B". This also passes through SSO and redirects me into app 2, displaying widget B as expected. But now if I go back to navigate anywhere on widget A in my first instance, it has to go back through the "Redirecting to Login Server." This now means the widget A window is valid, but the widget B window will have to redirect next time I use it (back & forth & so on...)
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Guesstimation: It seems like there must be a switch somewhere in SSO that says "allow multiple application instances yes/no"...but my problem may be APEX itself, or how SSO is tied into APEX... Sorry for the super-generic example, I'm not exactly sure where I should be looking to resolve this, and the closest similar problem I found on the forums was here: login to application twice in two seperate IE windows clears other login

reset your dock preferences. delete the file homedirectory/library/preferences/com.apple.dock.plist and log out/in. your dock, spaces and exposé will be reset to the defaults. see if the problem goes away.

How do I create multiple databases on the same ORACLE_HOME

Hi,
I would like to know how can I create 2 databases on the same ORACLE_HOME? Also is it possible to start both databases at the same time?
When I installed oracle,a directory named database has been created under ORACLE_HOME, which contains all initorc1.ora ,etc ?
At this point how do I create another database named orc2 on the same machine?
Thanks in advance.
winnie philip.

Hi,
Set the oracle_sid=db1
Now rename your init.ora to init<oracle_sid>.ora in $oracle_home/dbs directory.
Change the db_name parameter to appropriate name in the init<oracle_sid>.ora file.
Now create the database.
In the same fashion create another database with the new database name and different oracle_sid
Now in order to switch between the databases.
Change the env variable Oracle_Sid to the value of the database which you wanted to start.
Regards
Anand

JPA: how to organize multiple databases having the same schema definition?

Hi there,
I'm new to Java EE but I could finish some test projects on GlassFish 3 / Java EE 6 platform.
Now it's time to build the actual system and I need some help in that.
So, I can't really tell you the exact purpose of this system but let's look at the following example which is very close to what I need.
Say there is a database schema definition (DDL) for Oracle 11g and this schema is storing the inventory of a shop. So tables like product, category, price etc
Say there are 50 shops, and I'm getting a new database for each shop every month holding their inventory.
So every month I'm receiving a SQL file with INSERTs (DML) for every shop for the DDL I mentioned above.
I'm getting 50 SQL files for the 50 shops every month, so in a year you're talking about 600 SQL files to import.
If it was php/MySQL I could import them into a separate database each, call it shop1_May11, shop2_May11 etc reflecting the shop name and the month in the database name.
This is my question how you guys think I should achieve this in Jave EE / Oracle.
As the DDL is the same I thought to create an Entity for each table and use the Java Persistance API to create the databases and then I'd import the month/shop specific SQL files.
But this means I'm gonna create 50 new schemas in Oracle every month?
Or what's the best way to achieve this?
Thanks in advance
Edited by: 833519 on May 18, 2011 5:28 AM
Edited by: 833519 on May 18, 2011 5:29 AM
Edited by: 833519 on May 18, 2011 5:31 AM

JPA helps a lot in persisting and retrieving data that has relationships without having to worry about the relationships at a sQL level.
So you get a java programmer that builds relationships using Java classes (the entities) and a persistence provider worries about the sql required to materialize those relationships.
You seem to be using SQL inserts for persisting the data and you want to generate the reports from SQL as well.
You can use it but you won't be gaining much of its advantages for this project.
Consider reporting applications like the jasperserver for the reports.
Also, I have seen people get away with using one database for this type of thing and just adding a clientid (and optionally branchid) to each table.

Multiple databases with the same name ... only one named DB can be found

Hi All
We are currently in the progress of migrating over to APEX 3.2 from HTMLDB 2.1.
We have 3 instances on each version - DEV, UAT, LIV.
The HTMLDB servers and databases are set up with no problems in grid control. However, the new apex instances are not being found (different servers) - I think this has something to do with the names (global database name) being the same as an existing database that is already configured on GC.
Is there a way around this? as we plan to keep both versions of APEX/HTMLDB running in parallel for at least the next few months.
Thanks in advance.
Jake.

can you manually discover the new instances on the new server?
Then just make sure the name that appears in Grid Control is different.
e.g. prod.world is on server A and B. When you discover in Grid control, you can make it prod_B and you will see the latter without any problem.

Oracle TDE - Can multiple databases use the same Oracle wallet?

Oracle Advanced Security Transparent Data Encryption
I will have 2 or more databases running under the same Oracle 11.2 home. According to Oracle's documentation, it is preferred to reference the wallet via the sqlnet.ora file. That's fine. My question is if I want to use encryption in each of those databases, then I have no choice but to use the shared wallet then, correct.
I need to confirm that I have not missed something.
From Oracle's documentation:
Specifying a Wallet Location for Transparent Data Encryption
If you wish to use a wallet specifically for TDE, then you must specify a wallet location in the sqlnet.ora file by using the ENCRYPTION_WALLET_LOCATION parameter.
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http://docs.oracle.com/cd/E18283_01/network.112/e10746/asoappa.htm#i634447
Oracle Advanced Security Transparent Data Encryption
ENCRYPTION_WALLET_LOCATION = (SOURCE =
(METHOD = FILE)
(METHOD_DATA =
(DIRECTORY =
/etc/ORACLE/WALLETS/oracle)))
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Do not do this, follow this http://www.youtube.com/watch?v=Z9odSZxdoGU instead!
Best, Peter

Perfromance impact if mulitple database share the same disk group.

Hi All,
I need help in understanding what would be the performance impact if multiple databases share the same ASM disk group.
Is there any documentation that explains the impact on performance if there is any in doing so.
Your help is very much appreciated.
Thanks,
Ravi.

I need help in understanding what would be the performance impact if multiple databases share the same ASM disk group.application performance could be impacted; or not depending upon total disk I/O activity

Install two oracle8i database on the same machine

Hi
I am currently running oracle 8i on hp unix 11i.
I would like to ask whether I could run another instance(another oracle 8i database ) on the same machine.
In another word can I run two database on the same machine?
Is there any implication by doing so?
Thanks in advance

Hi
I am currently running oracle 8i on hp unix 11i.
I would like to ask whether I could run another instance(another oracle 8i database ) on the same machine.
In another word can I run two database on the same machine?
Is there any implication by doing so?
Thanks in advance Hi,
You can create multiple databases on the same machine, if you have sufficient resources.

Stop opening multiple instances of the same application

I am used to having graphic files on my desktop, when editing one I would simply right-click and pick "open with" > Photoshop (which is always open in its own desktop in my computer). Now out of the blue, if I do that, it loads another instance of Photoshop, which is certainly what I don't want. I can have 2, 3, 4 Photoshops running at the same time and editing the same image!
Any idea how to solve this? I searched but all I could find is people wanting the opposite i.e. opening multiple instances of the same app.

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/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -kill
Following this, run the following command to seed the database with the apps you currently have installed:
/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -seed
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Under Options , Applications There are multiple entries for the same item (Acrobat Document). how can I delete the duplicates?

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the incorrect entry? Adobe installed a very quick update today.

They are all different. Hover your mouse pointer over each of the "Content Type" descriptions and you should see a "tooltip" to see that each has a different description.
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Re: Running the same (Forte) application multiple times -for different

Hi
We had the same problem - how to deploy a number of identical applications, using each their own db.
(for training).
The solution we used is to wrap the entire application into different applications by using a very small
module called KURSUS01, KURSUS02 etc, that did nothing but call the start procedure of the main app.
Then in the dbsession connect, we made a call appname to get the application name, and appended the
first 8 chars to the dbname. Thus our dbnames now points to logicals name: rdbdataKURSUS01, rdbdataKURSUS02 etc.
All this allows us to deploy the identical apps in the same env, or change one version, and run both the old
and new program on the same pc and server at the same time (eg. KURSUS01 and KURSUS02).
I also think this is a kludge - but it works nicely!
Jens Chr
KAD/Denmark
-----Original Message-----
From: Haben, Dirk <[email protected]>
To: 'Soapbox Forte Users' <[email protected]>
Date: 15. januar 1999 09:41
Subject: Running the same (Forte) application multiple times - for different business clients.
Hi All
We have a number of different business clients all willing to use our
application.
The (forte) application is to run on our machines etc for these (business)
clients.
All (business) clients will have their data kept in separate Oracle DBs
(instance).
The problem now is that the entire (forte) application is written using
DBSessions.
Now, depending on what business client needs to be serviced (so to speak) we
need to attach to the right DB - or use the "right" SO.
The two options we can think of are:
Option1:
Programatic change to somehow "know" what (business) client (DB) I'm talking
about and then use the right DB.
Pro:
Only one forte environment to maintain
Can run multiple (business) clients on same PC at the same time
Con:
Requires many program changes
bending O-O rules(?)
can't dynamically name SOs so can it be done at all? (ResourceMGRs maybe?)
Option2:
Use separate environments! One for each business client.
Pro:
More defined separation of app and data,
SLA-easy
Con:
Maintain "n" number of environments
Can only run the application for one environment (business client) at a time
on one PC - Big Negative here!
Not knowing any feasible solution to option 1 (without much code changes and
developer moaning) I would go for option two; as I have already worked on
multi-environment setups on VMS back at the Hydro (hi guys).
I would appreciate any comments from anyone who has solved this problem.
How, Why Pro Con etc.
TIA,
Dirk Haben
Perth, WA
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Hi
We had the same problem - how to deploy a number of identical applications, using each their own db.
(for training).
The solution we used is to wrap the entire application into different applications by using a very small
module called KURSUS01, KURSUS02 etc, that did nothing but call the start procedure of the main app.
Then in the dbsession connect, we made a call appname to get the application name, and appended the
first 8 chars to the dbname. Thus our dbnames now points to logicals name: rdbdataKURSUS01, rdbdataKURSUS02 etc.
All this allows us to deploy the identical apps in the same env, or change one version, and run both the old
and new program on the same pc and server at the same time (eg. KURSUS01 and KURSUS02).
I also think this is a kludge - but it works nicely!
Jens Chr
KAD/Denmark
-----Original Message-----
From: Haben, Dirk <[email protected]>
To: 'Soapbox Forte Users' <[email protected]>
Date: 15. januar 1999 09:41
Subject: Running the same (Forte) application multiple times - for different business clients.
Hi All
We have a number of different business clients all willing to use our
application.
The (forte) application is to run on our machines etc for these (business)
clients.
All (business) clients will have their data kept in separate Oracle DBs
(instance).
The problem now is that the entire (forte) application is written using
DBSessions.
Now, depending on what business client needs to be serviced (so to speak) we
need to attach to the right DB - or use the "right" SO.
The two options we can think of are:
Option1:
Programatic change to somehow "know" what (business) client (DB) I'm talking
about and then use the right DB.
Pro:
Only one forte environment to maintain
Can run multiple (business) clients on same PC at the same time
Con:
Requires many program changes
bending O-O rules(?)
can't dynamically name SOs so can it be done at all? (ResourceMGRs maybe?)
Option2:
Use separate environments! One for each business client.
Pro:
More defined separation of app and data,
SLA-easy
Con:
Maintain "n" number of environments
Can only run the application for one environment (business client) at a time
on one PC - Big Negative here!
Not knowing any feasible solution to option 1 (without much code changes and
developer moaning) I would go for option two; as I have already worked on
multi-environment setups on VMS back at the Hydro (hi guys).
I would appreciate any comments from anyone who has solved this problem.
How, Why Pro Con etc.
TIA,
Dirk Haben
Perth, WA
To unsubscribe, email '[email protected]' with
'unsubscribe forte-users' as the body of the message.
Searchable thread archive <URL:http://pinehurst.sageit.com/listarchive/>
To unsubscribe, email '[email protected]' with
'unsubscribe forte-users' as the body of the message.
Searchable thread archive <URL:http://pinehurst.sageit.com/listarchive/>

Multiple adapters for the same applications

Hello.
We are developing an integration scenario in which we have multiple instances of the same application (96 instances).
We want to integrate them but deploying 96 adapters in Istudio is hard to maintain and useless because all the adapters do the same thing and the applications do the same too (they're all equal).
Is there any way i can see only one or few adapters that represents all application instances?

Hi Bjorn,
Yes, during the "create instance" wizard you can select how many instances do you want to create for a particular solution (see screen-shot below).
Best Regards,
Adarsh

Multiple database in the same ADF application

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