Multiple Schema one workspace?

I tried with "Manage Workspace to Schema Assignments" and when I look at the report I see that my workspace has mappings for three schema. When I try to create report with select, everything work but if I try to create form based on 2 schema that I mapped afterward, they won't show in form wizard (table/view owner)
Any suggestions?

Hi,
have you checked that the "parsing schema" of your application has SELECT privileges at least to one other object in the other schema? The "Assigned" workspace schemas do not really matter in the context of this wizard.
select * from dba_tab_privs where privilege = 'SELECT' and grantee = 'name of parsing schema';Regards
Patrick
My Blog: http://www.inside-oracle-apex.com
APEX 4.0 Plug-Ins: http://apex.oracle.com/plugins

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One application with Multiple schemas- common application frame work

Hi All,
I am trying setup a common application frame work in apex. Please help me.
How to achieve this.
Creation of one application attached to different schemas at run time. So that my application maintaince is going to be easy instated of creating copies of same application.
More details:
1. I have one application with 100 pages pointing to a schema dev_common in one workspace APP_COMMON. I have 50 schemas with same structure of dev_common schema with different set of data ( because of large amount of data).
So I want to create one application attached to different schemas.
2. And another thing is I have 100 users, the user can work on 1 or multiple schemas ( I mean same application with different schemas attached)
Any help much appreciated.
Thanks,

Thank you for the reply.
>> b) I think you have to give access rights for the dev_common and app_common to all users.
Dev_common schema is a kind of placeholder. I have 50 schemas same as dev_common because of different business requirements but the front end is same for all 50 schemas. How can we create one application used for 50 schemas instead of creating 50 applications and 50 workspaces.
Please help me.

Using Multiple Schemas in one Application

Is it possible to have multiple schemas from the same database in one applicaiton. In APEX we have added multiple schemas to our workspace but when we create a form or report only one schema seems to be available.

Miroslav wrote:
Your application has a parsing schema. All other schemas have to give appropriate grants to it to be available to your application.Miroslay is right, if you use the INTERNAL workspace to add additional schemas to a workspace, APEX does not take care of any grants between the schemas. APEX can not know how or if you might want the schemas to interact with one another. All this does is gives the workspace the ability to utilise that schema, such as adding it as parsing schema to any applications in the workspace.
You can switch to the secondary schema in SQL Workshop and add grants from there, e.g.
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Hello,
I need to export APEX users from one workspace/schema to a different workspace/schema. I only know how to export a sql file that combines the workspace with the users.
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Thanks
LEH

LEH,
You asked a similar question here: How to Create a Packaged Application
It's best not to start multiple threads on the same topic.
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 Scott 
http://spendolini.blogspot.com/
http://sumnertech.com/

Adding multiple schemas to a workspace

We use Oracle Applications for our ERP, and I've just had our DBA set up APEX. One of the first things I noticed, however, was that the object browser only shows the schema(s) that have been explicitly assigned to the workspace. I found in the help how to add another schema to the list (have the DBA log in to the admin page and create the new link), but it looked like there wasn't any support for adding multiple schemas at once. Since the applications use a lot of schemas (AP, AR, INV, PO, ONT, WSH, etc., etc.), it'd be great if I didn't have to have him doing all of this manually.
Suggestions?
Or do we just need to do it, secure in the knowledge that we should only have to do it a few times?
(Also, is there any way to have the object browser filter down to tables/views that the APEX user has grants on?)
Thanks,
-David

Peter,
Thanks, that gave us what we wanted. Though now I'm not sure if it's what we should actually have. After adding the schemas, we found that we could manipulate anything we wanted in those schemas (create tables, view and update data, etc.) without having to do explicit grants. This is an obvious security issue...
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Multiple Schemas under one user account with XE 10g

Hi,
I am using (learning) XE 10g. I would like to know if it is possible to have multiple schemas under one user account and have the schemas logically separated. As of right now, I have three schemas that I am working with, each one under a different user account. This is inconvenient, because I have to logout of one user account and login to another user account simply to be able to work with another schema.
Thanks

It isn't possible to have multiple schemas under one database user account. It is of course possible to grant rights to other database users, and or roles, in order to allow access to the tables/data from other accounts. In Oracle there is a one-one mapping between schema and user.
Niall Litchfield
http://www.orawin.info/

One dump file inport into multiple schema

Hi,
I need to import one dumpfile to multiple schema but it's not working.
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remap_schema=CTBNGUMB:CTBNGUMB_1,CTBNGUMB:CTBNGUMB_2,CTBNGUMB:CTBNGUMB_3,CTBNGUMB:CTBNGUMB_4
how can import one dumpfile to multiple schema?
Edited by: 819136 on Feb 16, 2011 5:53 AM

Hi,
I want same schema import into different schams (users) is it possible?
OS Version is Linux 4
Oracle DB Version is : 10.2.0.4
While importing getting the below error
[oracle@sos02 10.2.0]$ impdp "'system/redhat as sysdba'" dumpfile=CTBNGUMB_14022011.dmp logfile=CTBNGUMB_IMP_17022011.log directory=DUMP_DIR remap_tablespace=NGUMB_TS:TRUSTWARE01 remap_tablespace=TRUSTWARE:TRUSTWARE01 remap_tablespace=NEXTGENREF:TRUSTWARE01 remap_schema=CTBNGUMB:CTBNGUMB_1 remap_schema=CTBNGUMB:CTBNGUMB_2 remap_schema=CTBNGUMB:CTBNGUMB_3 remap_schema=CTBNGUMB:CTBNGUMB_4
Import: Release 10.2.0.4.0 - Production on Thursday, 17 February, 2011 9:24:32
Copyright (c) 2003, 2007, Oracle. All rights reserved.
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
ORA-39001: invalid argument value
ORA-39046: Metadata remap REMAP_SCHEMA has already been specified.

Multiple schema for a (workspace) user

If I use XE and create a database user from the homepage/admin as system I get ( compared to an HTMLDB2.0 instance in an SE/EE-environment) a user with its workspace (the admin for this workspace). This user has his own schema and if he is logged in he can create application-users (HTMLDB-Users in this workspace).
(1) But how can I add more than one schema to this workspace?
I create a user TEST as system. got user TEST with schema TEST.
I have a database schema (only database schema) DEMO and want assign this so that the (htmldb)User TEST can create applications based on the schema DEMO (thats possible in HMLDB2.0 with SE/EE).

Thanks dietmar -
I believed thats an restriction - but want to get an official statment from development... -> SCOTT?
I know the basic workaround and then have to consider any changes in the mixed structure.
It makes sense to have data separated in different schemas and have only one workspace for bundling different applications, because of same securityInterface,
UserInterfaceDefaults... (easy delivering for departments, customers).
If the restriction exist (for newbies makes it easier to understand htmldb&oracle),
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Need Best Practice - Apex, multiple schemas, security model

We have an oracle database which contains
a) named database users with no objects
b) several schemas with data tables:
sales
marketing
accounting
We need to build GUI for tables in these schemas,
every database users should belong to a group, each user group should have access to several (not all) GUI pages.
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Some link to documentation?
2) Which security model (apex users, database users,..) to choose and why? please recommend some links to comparison...

Hi Marcus,
Our developers like to see all the tables for a single custom application in its own diagram no matter where they come from and the DBA's don't want to wade through several thousand tables to find the handful we need nor have to duplicate table definitions in multiple models. In >Designer we have been doing that with Application Folders.There are no application folders in data Modeler. You can use subviews to define your subject areas. Subview is crated for each application (folder) during import form Designer repository.
Philip

Multiple schema used on apex?

hi all,
i posted a thread here need some comments or suggestions for database designing
just wanted to ask comments from APEX developers as well. is it recommended to have more than one schema if i use Oracle Application Express as front-end tool?
considering that having multiple schema means multiple workspace. then there will be features that i won't be able to use such as a single sign on for all applications in this case?
what i want to know is are there any other ways to have a user sign in to one application and be authenticated in all applications despite that those applications are on different workspaces?
thanks
allen

Allen,
One Workspace doesn't mean one schema. You can have multiple schemas assigned
to one workspace.
Denes Kubicek
http://deneskubicek.blogspot.com/
http://www.opal-consulting.de/training
http://apex.oracle.com/pls/otn/f?p=31517:1
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Multiple schema, but instance doc does not have namespace

Is it possible to successfully validate an instance document without namespaces against multiple schema with different namespaces?
example:
this is the normal xml which is valid with all the namespace:
<MyRoot dateTime="040112061834" instanceIdentifier="NTNDEC13541" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://org.schema.ntn" xsi:schemaLocation="http://org.schema.ntn ntn.xsd" xmlns:cbc="http://org.schema.cbc cbc.xsd">
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     <cbc:SenderID>2344134</cbc:SenderID>
     <cbc:RecipientID>3485774</cbc:RecipientID>
     <cbc:TotalNumberOfDeclaration>1</cbc:TotalNumberOfDeclaration>
</MyRoot>but I want to remove all namespace
<MyRoot>
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     <SenderID>2344134</SenderID>
     <RecipientID>3485774</RecipientID>
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</MyRoot>now is it possible to validate programmatically using sax the above xml against multiple schema? can i do it without any namespace at all??
thanks

Hi Larry, Thanks for your reply along with Muppet Mark, If I changed the color settings originally it was not my intension, I was simply just opening the next project to work on and viola’ “missing profiles”.
Attachment (picture) 7 was my last setting for color prior to your email, and yes I was messing around with this last night comparing it to one of our old G4’s, so I can’t remember where it started out before I got my hands on it.
Attachment (picture) 8 is my current settings based on your email recommendations.
Attachment (picture) 6 is the message I receive when I open any files created prior to these changes I just made. However after I open and resave the file I no longer receive this (picture 6) message.
My question is will my color be back to where it was before the problem started last week. In looking over one of the files I opened (I design/build transportation maps btw) most of the color is where I usually have it set however some colors were fractional as if they were converted from spot colors. SO I’m not sure what to do except go through all the known colors and make sure they are where I usually would set them, or do you have a better suggestion.
Oh by the way – for all you guys that are helping lunch is on me at McDonalds on Michigan St in Grand Rapids, MI!!
#7
#8
#6

Help With Multiple Schemas In Multiple Environments

Dear Oracle Forum:
We have a bit of controversy around the office and I was hoping we could get some expert input to get us on the right track.
For the purposes of this discussion, we have two machines, development and production. Currently, on each machine, we have one database with multiple schemas, say, one for sales data and another for inventory. The sales data has maybe 200 tables and the inventory has another 50. About 12 times a year, once a month, we have a release and move code from dev to prod. The database is accessed by several hundred Pro*C and Pro*Cobol programs for online transaction processing.
The problem comes up when we need to have multiple development environments. If I need to work on something for May that requires the customer address field to be 50 characters and somebody else is working on something for July that requires the customer address field to be 100 characters, we can’t both function in the same schema. We have a method of configuring running programs to attach to a given schema/database. Currently, everything connects to the same place. We were told that we should not have the programs running as the owners of the schemas for some reason so we set up additional users. The SALES schema is accessed with the connect string: SALES_USER/[email protected]. (I don’t know where we got dot world from but that is not the current discussion.)
One of the guys said that we should have 12 copies of the database running, which is kind of painful to think about in my opinion. Oracle is not a lightweight product and there are any number of ancillary processes that would have to be duplicated 12 times.
My recommendation is that we have 12 schemas each for sales and inventory with 12 users each to access them. We would have something like JAN_SALES_USER, FEB_SALES_USER, etc. Each user would have synonyms set up for each of the tables it is interested in. When my program connects as MAY_SALES_USER, I could select from the customer table and I would get my 50 character address field. When the other user connects as JUL_SALES_USER, he would get his 100 character address field. Both of us would not know anything different.
Another idea that came up is to have a logon trigger that would set the current schema for that user to the appropriate base schema. When JUL_SALES_USER logs in, the current schema would be set to JUL_SALES, etc. This would simplify things by allowing us to avoid having something like 2400 synonyms to maintain (which could be automated without too much difficulty) but it would complicate things by requiring a trigger.
There are probably other ways to go about this we have not considered as yet. Any input you can give will be appreciated.
Regards,
/Bob Bryan

Hans Forbrich wrote:
I'd rather see you with 12 schemas than with 12 databases. Unless you have lots of CPUs to spare ... and lots of cash to pay for those extra CPU licenses.
Then again, I'd take it one step further and ask to investigate the base design. There should be little reason to change the schema based on time. Indeed, from what little I know of your app, I'd have to ask whether adding a 'date' column and appropriate views or properly coded SQL statements might simplify things. Interesting. If we were to have one big Customer table with views for each month, how would we handle the case where the May people have to see 50 character address and July have to see a 100 character address field. I guess we could have MAY_ADDRESS VARCHAR2(50) and JULY_ADDRESS VARCHAR2(100) and take care to make sure that people connecting as May can only see the May columns, etc. This is simpler than multiple schemas?
I may have overly simplified things in my effort to get something down that would not require too much explanation. The big thing is that multiple people are doing development and they have to be independent of each other. If we were to drop a column for July, the May people will have trouble compiling if we don’t keep things separate. It is not a case of making the data available. The data in development is something we cook up to allow us to test. The other part is the code we compile now will be released to production one of these times. In production, there is only a need for one database.
We are moving from another database product where multiple databases are effectively different sets of files. We have lots of disk space so multiple databases were no problem. Oracle is such a powerful product; I can’t believe there is not some way to set up something similar.

Save password for several application in one workspace

Hi, I have several applications in one workspace with custom authentication. How do I set the option to save password (which is same for all apps) , so I would not write password every time when switching from application to application. Thank you

933913 wrote:
Hi, I have several applications in one workspace with custom authentication. How do I set the option to save password (which is same for all apps) , so I would not write password every time when switching from application to application. Thank youIf you are using the same authentication for all your applications, then you can redirect to those applications just same as you redirect to the current app by just changing the app_id
you can use a same session cookie name for all applications and make sure all apps use same authentication scheme
Edit you application A > Shared Components > Authentication Scheme > edit your authentication > Session Cookie Attributes section
set Cookie Name value to somestring
for example: commonauthcookie
Repeat the above step for all other applications and set the cookie name to the same as above

Multiple applications in workspace

Hi,
is it possible to open more than one appllication. If I use two Internet explorer and connect to the workspace one window is closed automatically. Is there any workaround?
Best Regards

Hi Friend,
If you have to open multiple applications in workspace just click those applications one by one it will automatically open different application in different tab of workspace home page.
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Database Design - multiple schemas

Hi!
We're currently designing a DB for an AUTHENTICATION SYSTEM where several users from different companies (around 40) will have to be authenticated -- connected to ORACLE. Authentication and faster recovery is important.
Recovery/Backup
An issue raise where what if the schema encountered a problem then of course you have to backup the entire data. So we are considering to use multiple schemas.
One Company = One Schema
So if one schema is down then other schemas will not be affected and faster to recover.
Actualy, we're quite hesistant to use multiple schemas because of maintainability -- Managing different schemas and too much burder for our developers.
Will the idea of having multiple schemas be advantageous to what we want to achieve?
Is this a good design or any other idea to handle this kind of situation?
Can Partitioning do the same?
Thanks a lot

Advantages of multiple schemas:
- each schema is entirely separate
- you can maintain at different times/dates for different companies
- different schemas could be on different databases / servers
Disadvantages
- any 'shared' data may have to be duplicated (but you can always use a shared schema for reference data)
- yes, you have to maintain each schema separately (but that would be by scripts, and at least they'd be well tested!)
The dictionary (SYS tables) will be somewhat larger (40 copies of table, index, pl/sql definitions)
- you'll have 40 identical sets of SQL cached; they all look the same, but relate to different schemas. So you need a bigger SGA.
Can Partitioning do the same?No - partitioning is a solution to a physical problem, not a security problem
Is this a good design or any other idea to handle this kind of situation?I think either way works - it depends on size, number of users, are you using a third tier, etc.
Or, with a single schema, you can use VPD - virtual private database (otherwise known as FGAC - fine grained access control or RLS - row level security).
See eg http://builder.com.com/5100-6388_14-5062064.html and also Ask Tom http://asktom.oracle.com/pls/ask/f?p=4950:8:::::F4950_P8_DISPLAYID:70287097313911 which refers to the documents.
You can also implement a kind of VPD on the cheap by using user defined namespaces and the SYS_CONTEXT function, combined with application logic and clever view definitions.
HTH
Regards Nigel

Multiple Schema one workspace?

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