ER Database diagrams and materilized views

I would like to be able to diagram materialized views on a database diagram.
Other tools can do this either directly or by exposing the underlying physical table

Hi Pete,
This functionality is not currently available, it is currently be looked at scheduling it for the next major JDeveloper release.
Regards,
Lisa
JDev QA

Similar Messages

Databased diagram and business components

Hi,
I am using Jdev release 1 (11.1.1.3.0) to create a database diagram out of the BC entities. I would have thought that as long as i had specified ERD notation, my diagram would not look like UML based one (.e.g associations without crawfoot etc)., but it does.
Can someone please confirm.
Thanks,

What are the Business Packages have to deploy?
In portal side you need to deploy the below packages.
-> BP ERP05 ESS 1.41
-> BP ERP05 MSS 1.51
-> BP ERP05 COMMON PARTS 1.51
-> BPERPESSWDA1.50
-> BP MSS ADDON 1.0
-> BP Recruiter
-> BP Recruiter Administrator
If you want implement TMS applications then you required below BP's
-> BP ERP TMS 1.51
-> BP ERP05 TALENT DEV 1.01
And the components should be SP level compatibility with SAP ECC system
-> SAP ESS
-> SAP MSS
-> SAP PCUI_GP
What are the Business Functions have to deploy?
You need to activate the below BF's in ECC HR system
HCM_ESS_CI_1
HCM_ESS_WDA_1
HCM_ESS_WDA_2
HCM_MSS_WDA_1
HCM_MSS_WDA_2
FIN_TRAVEL_1
FIN_TRAVEL_2
FIN_TRAVEL_3
HCM_ASR_CI_1
HCM_ASR_CI_2
HCM_ASR_CI_3
HCM_ECM_CI_1
HCM_ECM_CI_2
HCM_LSO_CI_1
HCM_LSO_CI_2
HCM_LSO_CI_3
HCM_OSA_CI_1
HCM_OSA_CI_2
HCM_PD_UI_1
HCM_TMC_CI_1
HCM_TMC_CI_2
CA_HAP_CI_1
HCM_OSA_CI_1
HCM_OSA_CI_2
HCM_TMC_CI_1
HCM_TMC_CI_2
HCM_HCP_CI_1
HCM_ECM_CI_2
HCM_ERC_CI_4
HCM_PD_UI_1
FIN_CO_MSSBUA_NWBC
FIN_REP_SIMPL_1
ERP_ENTERPRISESEARCH
What are the Business Components have to deploy?
In ECC side import the addon components based on your system component levels.
MSS Addon 1.0
ERECRUTIMENT

How to get only one line between tables in database diagram?

Hi!
I'm using jdev 10.1.3. I've got a database schema with a lot of tables. I would like to have them in one database diagram in compact view with only ONE line between two tables even if there are more foreign key columns between the two tables. In the shema there are a lot of foreign keys with multiple columns and the diagram is hard to read.
How to archieve this?
Thanks,
Carsten.

hi,
u should use the same variable across all your queries.In the WAD there is a propoerty "display same variable once". Check that.
hope it helps,
regards,
Parth

How to make a 1:1 cardinality in Jdev 102 Database Diagram?

hello, i want to make a database diagram, and have following problem:
i need to create a ( 1 :1 ) cardinality between 2 tables, but jdeveloper always shows ( 1 : * ) each time i add a foreign key in table 1 referring to table 2
question 1:
anyone know about this?
question2:
i have thought maybe i create a EJB diagram with java classes generated from the created tables, and then i determine the cardinality (1:1) between (java class 1) and (java class 2). is that an issue?
question 3:
in my database diagram:
maybe i create 2 foreign keys :
table1.ID ---------- (1:*) ----------> table2.ID
table1.ID <---------- (*:1) ---------- table2.ID
anyone has idea?
thx for suggestions
best regards

hi again,
oupps , i forgot sthg else to mention:
the tables will be created directly in the diagram and are not exported as "offline tables" from an existant database
that means, the cardinality 1:1 does not yet exist , i must create the relation 1:1 directly in the diagram, but i could not :-(

[bug 10.1.3 EA1 Database Diagram] edit error after schema change

If you change the schema of a table definition in a Database Diagram and then attempt to edit the table definition, you get the following error:
Editing is disabled.
Error opening <table_name> - duplicate object definitions exist on the database path.
The current node is: <path to .table file in old schema folder>
Operations are diabled on all but the first object found on the database path: <path to .table file in new schema folder>
Workaround is to close JDeveloper and re-open. Table definitions are then editable.
Johnny Lee

Thanks for reporting this Johnny.
I was able to reproduce the problem in the EA1 release but it is working correctly in the latest build.
Thanks again,
Lisa
JDev QA

10G preview java excpection in database diagram

I got java exception event i import tables into a package and a database diagram or drag them (multiselect) from schema structure into a database diagram. After this exception the relationships are no more present into the diagram and it is impossible to continue with another tables.
Is it somebody tracking bug in 10g ?
Are interesting by more details ?
Are you planing updates on the fly (check for updates option by example) to correct our installation periodically ?

First i created a new workspace and new empty project. Afterthat i create a connection to my database and test sucessfully. In the new project i created a new database diagram and move the connection pane and open the list of tables (tree). I selected the first occurence and go to the last, press the shift key and select the last also. So all the tables in the schema were selected. I dragged all the tables directly into the diagram. Some of them was correctly added in the diagram but the process did not fully complete.
After i deleted all and do the same the import wizard with something like the same problem. I'm not sure that i really deleted the files from the disk so i will not confirm that the problem was exactly the same. I will reproduce and give you more information.
the database is 9.2.0.3.0
the os for both in windows xp sp1 (on the same machine for db and jdev)

Question: how to open a database diagram stored in subversion

I am new to Jdeveloper and am exploring Jdeveloper 11g TP4 interaction with subversion.
I created a project and then created a database diagram and added it to subversion.
On another computer that does not have the same project defined, I would like to access and open the database diagram. I can select the diagram in Subversion Navigator. The database diagram editor does not launch when I choose open from the context menu. Should it?
I am not grokking something and would appreciate any tips.

atlr,
You cannot open the diagram directly from Subversion like that. You need to check out a copy in order to open it.
Hope this helps,
John

Offline database and table, view, package organization

Hi,
I tried to import my database schema with package, synonyms, tables, and views into a jdev project (11.1.1.1.0) and noticed that unlike the online db view, all object types are imported/organized under one folder (the name of the schema).
For example, online db view shows the following structure
+ my_schema
+ Tables
+ MyTable1
+ Views
+ MyView1
+ Indexes
+ MyIndex1
+ Packages
+ MyPackage1
+ ....
But the imported offline db view shows the following structure that has all different types of db objects listed under myschema folder
+ my_schema
+ MyTable1
+ MyView1
+ MyIndex1
+ MyPackage1
+ ....
This offline representation is hard to work with and unusable if one wants to create database diagrams for different types of large # of database objects.
Any comments?
Thanks,

Hi,
It doesn't sound like it is the different package that is causing this message. Is SB1 a system in your landscape? Are there any differences between the tables?
The message seems to be suggesting that either the second table, or possibly the function group you are using were imported from another system.
Regards,
Nick

Just updated my MacBook Pro to 10.6.8 and now my Filemaker 11 databases (.fp7) do not view properly on my desktop. Is this a java issue?

Hi,
Wondering if anyone knows what's going on with my Filemaker Database that will not view properly on my desktop after upgrading from 10.5 to 10.6.8 on
my MacBook Pro. Is this a Java issue? The data is all there but all I see is blank boxes when I open or click on a specific area in the database.
My Java version is SE 6 1.6.0.37-bo6-434.

Let me understand:
- you have purchased named canon, which is conencted to your PC running windows xp
- downloaded driver for win xp, and canon works fine
- canon is connected to that PC via USB
- that Canon is also activated as network printer, by allowing print sharing in windows; how did you set that option?
- now, you are in Mac OS x 10.6.8, downloaded Canon driver for Mac OS X, installed it, detected printer on the network, printer was installed; was it detected as attached to that PC running win XP? or not?
or you set canon by being connected to your mac directly via USB?
Now, there are some questions you should answer as some details are missing, and your initial text is not clear. Can you print if Canon is connected directly to your mac? did you try that? if not, do it before answering.

Difference among the Help view,Database view and Maintanance View

hi,
can Anyone pls let me know the Difference among the Help view,Database view and Maintanance View
thanks&regards
rama

The followings are different types of views:
Database View (SE11)
Database views are implement an inner join, that is, only records of the primary table (selected via the join operation) for which the corresponding records of the secondary tables also exist are fetched. Inconsistencies between primary and secondary table could, therefore, lead to a reduced selection set.
In database views, the join conditions can be formulated using equality relationships between any base fields. In the other types of view, they must be taken from existing foreign keys. That is, tables can only be collected in a maintenance or help view if they are linked to one another via foreign keys.
Help View ( SE54)
Help views are used to output additional information when the online help system is called.
When the F4 button is pressed for a screen field, a check is first made on whether a matchcode is defined for this field. If this is not the case, the help view is displayed in which the check table of the field is the primary table. Thus, for each table no more than one help view can be created, that is, a table can only be primary table in at most one help view.
Go thru this link plzz
http://help.sap.com/saphelp_nw2004s/helpdata/en/cf/21ecf9446011d189700000e8322d00/frameset.htm
Difference between "Help View" and "Search Help"
Projection View
Projection views are used to suppress or mask certain fields in a table (projection), thus minimizing the number of interfaces. This means that only the data that is actually required is exchanged when the database is accessed.
A projection view can draw upon only one table. Selection conditions cannot be specified for projection views.
Maintenance View ( SE54 )
Maintenance views enable a business-oriented approach to looking at data, while at the same time, making it possible to maintain the data involved. Data from several tables can be summarized in a maintenance view and maintained collectively via this view. That is, the data is entered via the view and then distributed to the underlying tables by the system.
Please have a look at below link. It will help you.
http://help.sap.com/saphelp_nw04/helpdata/en/cf/21ed06446011d189700000e8322d00/frameset.htm
for more detailed info look on:
http://www.sap-img.com/abap/what-is-the-different-types-and-usage-of-views.htm
https://www.sdn.sap.com/irj/sdn/wiki?path=/display/home/abap+dictionary&
1.Go to se11
2. select view radiobutton and give a name
3. Create
4. select type of view you want to create. Such as database view.
5. give short description
6. give a table name such as mara
7. press the pushbutton relationship. here you will find all the tables which are allowed to create view with mara.
8. select one or mane tables.
8 copy
9.save , check and activate.
The followings are different types of views:
Database View (SE11)
Database views are implement an inner join, that is, only records of the primary table (selected via the join operation) for which the corresponding records of the secondary tables also exist are fetched. Inconsistencies between primary and secondary table could, therefore, lead to a reduced selection set.
In database views, the join conditions can be formulated using equality relationships between any base fields. In the other types of view, they must be taken from existing foreign keys. That is, tables can only be collected in a maintenance or help view if they are linked to one another via foreign keys.
Help View ( SE54)
Help views are used to output additional information when the online help system is called.
When the F4 button is pressed for a screen field, a check is first made on whether a matchcode is defined for this field. If this is not the case, the help view is displayed in which the check table of the field is the primary table. Thus, for each table no more than one help view can be created, that is, a table can only be primary table in at most one help view.
Go thru this link plzz
http://help.sap.com/saphelp_nw2004s/helpdata/en/cf/21ecf9446011d189700000e8322d00/frameset.htm
Difference between "Help View" and "Search Help"
Projection View
Projection views are used to suppress or mask certain fields in a table (projection), thus minimizing the number of interfaces. This means that only the data that is actually required is exchanged when the database is accessed.
A projection view can draw upon only one table. Selection conditions cannot be specified for projection views.
Maintenance View ( SE54 )
Maintenance views enable a business-oriented approach to looking at data, while at the same time, making it possible to maintain the data involved. Data from several tables can be summarized in a maintenance view and maintained collectively via this view. That is, the data is entered via the view and then distributed to the underlying tables by the system.
Please have a look at below link. It will help you.
http://help.sap.com/saphelp_nw04/helpdata/en/cf/21ed06446011d189700000e8322d00/frameset.htm
for more detailed info look on:
http://www.sap-img.com/abap/what-is-the-different-types-and-usage-of-views.htm
https://www.sdn.sap.com/irj/sdn/wiki?path=/display/home/abap+dictionary&
Go thru this link plzz
http://help.sap.com/saphelp_nw2004s/helpdata/en/cf/21ecf9446011d189700000e8322d00/frameset.htm
Difference between "Help View" and "Search Help"
http://help.sap.com/saphelp_nw04/helpdata/en/cf/21ed06446011d189700000e8322d00/frameset.htm
Hope this is helpful, Do reward

What is the use of Database View, maintenace , projection and Help view

hello friends,
I created tables..and set check table relation.
how to create Database View, maintenace , projection and Help view
phani

Hi,
have a look at this.
4 type of views
database
maintainance
help
projection view
check this link as well
(https://forums.sdn.sap.com/click.jspa?searchID=9904886&messageID=4885135)
Database views are implemented with an equivalent view on the database.
Projection views are used to hide fields of a table (only projection).
Database views should be created if want to select logically connected data from different tables simultaneously.
Database views implement an inner join.
Application programs can access the data of a database view using the database interface. (Just as we write select queries on database tables, we can write them for views as well.)
Includes in Database Views
An entire table can be included in a database view. In this case all the fields of the included table will become fields of the view (whereby you can explicitly exclude certain fields).
To include one of the tables in the view, enter character * in field View field, the name of the table to be included in field Table and character * again in field Field name on the View fields tab page of the maintenance screen of the view.
You can also exclude individual fields of an included table. If you do not want to include a field of the included table in the view, enter - in field View field, the name of the included table in field Table and the name of the field to be excluded in field Field name.
Inserts with Database Views
If a database view contains only one single table, data can be inserted in this table with the view .
You have the following options for the contents of the table fields not contained in the view:
If the field is defined on the database with NOT NULL as initial value, the field is filled with the corresponding initial value.
If the field is defined on the database as NOT NULL without initial value, an insert is not possible. This results in a database error.
If the field is not defined on the database as NOT NULL, there will be a NULL value in this field.
A maintenance view permits you to maintain the data of an application object together.
The maintenance status determines which accesses to the data of the underlying tables are possible with the maintenance view.
Read only: Data can only be read through the view.
Read, change, delete, insert: Data of the tables contained in the view can be
changed, deleted, and inserted through the view.
Read and change: Existing view entries can be changed. However, records
cannot be deleted or inserted.
Read and change (time-dependent views): Only entries whose non-time
dependent part of the key is the same as that of existing entries may be
inserted.
Maintenance View ( SE54 )
You can use a maintenance view to maintain data, which is distributed over several tables, at the same time.
Maintenance views enable a business-oriented approach to looking at data, while at the same time, making it possible to maintain the data involved. Data from several tables can be summarized in a maintenance view and maintained collectively via this view. That is, the data is entered via the view and then distributed to the underlying tables by the system.
Creating maintenance View:
http://help.sap.com/saphelp_nw2004s/helpdata/en/cf/21ecdf446011d189700000e8322d00/frameset.htm
regards,
vipul

SSMS crash when creating new database diagram

For several years I have been unable to create database diagrams from within SSMS. I have tried every combination of VS2005, VS2008, VS2012 and VS2013 with every combination of SQL2005, SQL2008, SQL2012 and SQL2014.
I have installed, uninstalled, and repaired many dozens of times. I am currently using VS2013 ultimate with SQL2014 express.
I have tried every related 'workaround' that I can find on the internet. Still the problem persists.
Any help would be deeply appreciated.
Here are the relevant details with file versions:
In SSMS, I right-click on a database and choose New Database Diagram. A Blank diagram window appears with the SSMS error dialog:
===================================
Attempted to read or write protected memory. This is often an indication that other memory is corrupt. (Microsoft.VisualStudio.OLE.Interop)
Program Location:
   at Microsoft.VisualStudio.OLE.Interop.IOleCommandTarget.QueryStatus(Guid& pguidCmdGroup, UInt32 cCmds, OLECMD[] prgCmds, IntPtr pCmdText)
   at Microsoft.VisualStudio.Platform.WindowManagement.DocumentObjectSite.QueryStatus(Guid& pguidCmdGroup, UInt32 cCmds, OLECMD[] prgCmds, IntPtr pCmdText)
   at Microsoft.VisualStudio.Platform.WindowManagement.WindowFrame.QueryStatus(Guid& pguidCmdGroup, UInt32 cCmds, OLECMD[] prgCmds, IntPtr pCmdText)
   at Microsoft.Internal.VisualStudio.Shell.Interop.IVsTrackSelectionExPrivate.Register()
   at Microsoft.VisualStudio.Platform.WindowManagement.WindowFrame.ConnectSelectionContext()
   at Microsoft.VisualStudio.Platform.WindowManagement.WindowFrame.Activate()
   at Microsoft.VisualStudio.Platform.WindowManagement.WindowManagerService.viewManager_ActiveViewChanged(Object sender, ActiveViewChangedEventArgs e)
   at System.EventHandler`1.Invoke(Object sender, TEventArgs e)
   at Microsoft.VisualStudio.PlatformUI.ExtensionMethods.RaiseEvent[TEventArgs](EventHandler`1 eventHandler, Object source, TEventArgs args)
   at Microsoft.VisualStudio.PlatformUI.Shell.ViewManager.SetActiveView(View view, ActivationType type)
   at Microsoft.VisualStudio.Platform.WindowManagement.WindowFrame.ShowInternal(ShowFlags showFlags)
   at Microsoft.VisualStudio.Platform.WindowManagement.WindowFrame.<Show>b__26()
   at Microsoft.VisualStudio.ErrorHandler.CallWithCOMConvention(Func`1 method)
   at Microsoft.VisualStudio.Platform.WindowManagement.WindowFrame.Show()
   at Microsoft.VisualStudio.Platform.WindowManagement.WindowFrame.MarshalingWindowFrame.<Microsoft.VisualStudio.Shell.Interop.IVsWindowFrame.Show>b__7a()
   at Microsoft.VisualStudio.Shell.ThreadHelper.Invoke[TResult](Func`1 method)
   at Microsoft.VisualStudio.Platform.WindowManagement.WindowFrame.MarshalingWindowFrame.Microsoft.VisualStudio.Shell.Interop.IVsWindowFrame.Show()
   at Microsoft.SqlServer.Management.UI.VSIntegration.Editors.VirtualProject.CreateDesigner(Urn origUrn, DocumentType editorType, DocumentOptions aeOptions, IManagedConnection con, String fileName)
   at Microsoft.SqlServer.Management.UI.VSIntegration.Editors.VirtualProject.Microsoft.SqlServer.Management.UI.VSIntegration.Editors.ISqlVirtualProject.CreateDesigner(Urn origUrn, DocumentType editorType, DocumentOptions aeOptions, IManagedConnection
con, String fileName)
   at Microsoft.SqlServer.Management.UI.VSIntegration.Editors.ISqlVirtualProject.CreateDesigner(Urn origUrn, DocumentType editorType, DocumentOptions aeOptions, IManagedConnection con, String fileName)
   at Microsoft.SqlServer.Management.UI.VSIntegration.Editors.VsDocumentMenuItem.CreateDesignerWindow(IManagedConnection mc, DocumentOptions options)
   at Microsoft.SqlServer.Management.UI.VSIntegration.Editors.VsDocumentMenuItem.InvokeDesigner(IManagedConnection connection)
   at Microsoft.SqlServer.Management.UI.VSIntegration.Editors.VsDocumentMenuItem.Invoke()
   at Microsoft.SqlServer.Management.UI.VSIntegration.ObjectExplorer.ToolsMenuItemBase.MenuInvokedHandler(Object sender, EventArgs args)
Version info taken from Sql Server Management Studio/Help/About dialog:
Microsoft SQL Server Management Studio      12.0.2000.8
Microsoft Analysis Services Client Tools    12.0.2000.8
Microsoft Data Access Components (MDAC)     6.1.7601.17514
Microsoft MSXML                             3.0 4.0 5.0 6.0
Microsoft Internet Explorer                 9.11.9600.17358
Microsoft .NET Framework                    4.0.30319.18444
Operating System                            6.1.7601
DLL versions
c:\Program Files(x86)\Common Files\microsoft shared\Visual Database Tools
dsref80.dll version 12.0.21005.1
c:\Program Files(x86)\Common Files\microsoft shared\MSDesigners8
msdds.dll    12.0.21005.1
msddsf.dll   12.0.21005.1
msddslm.dll 12.0.21005.1
msdds.mp.dll 12.0.21005.1
msddsp.dll   12.0.21005.1
c:\Program Files(x86)\Common Files\microsoft shared\MSDesigners8\Resources\1033
msddsui.dll 12.0.21005.1

Hello,
There is a Connect item related to this issue. This is the link of that Connect item:
https://connect.microsoft.com/SQLServer/feedback/details/730985/smss-crashes-when-creating-new-database-diagram
Try the workarounds posted there (Workarounds section).
Hope this helps.
Regards,
Alberto Morillo
SQLCoffee.com

[SOLVED] Show only primary key columns in database diagrams

Hi,
I'd like to create a database diagram with some tables hiding all the columns that aren't primary key or foreign key.
Currently the only way that I've found is right click on the column's name (in the table body visualized into the diagram) --> Hide selected shape
I've found the option that permits to visualize the constraint name and (optionally) the relative fields on the same row but what I'd like is something like:
<Table name>
<column_name> PK
<column_name> PK
<column_name> FK1
<column_name> FK2
Do you know a way to do this?
Many thanks
Best regards
Message was edited by:
Tranen

Hi Tranen,
you can view the constraints and respective columns by setting the
Table Shape Properties in the Property Inspector.
Select (all) the tables on the Diagram you want
In the Property Inspector,under Constraints -Set the 'Show Constraint Columns' to 'True',
Set 'Show Constraints' to 'True' .
Constraints (PK,UK,FK,Check)
Also Set the 'Show Columns' option to 'False' .This will be under display options in the Property inspector.
This should modify the Table shape in the diagram as follows:
<Table name>
<PK> PKName:Column1,Column2
<UK>UKName:Column3
<FK>FKname:Column1
are you looking for the same?
Thanks.

Problem with Database diagram

Not exactly a newbie but not a pro,
Started getting this error when dragging tables from the connections folder to a database diagram. Instead of the "Specify Location" dialog I am getting a "Create as " dialog with
Business Components Entity Objects
Business Components Read Only View Objects
EJB 3.0 Entities
Java Classes (TopLink persistence)
as choices with a message that "Some of the objects you have selected can be used to create related objects. Choose the precise set of objects you want to appear on your diagram.
All selections end in the error.
Any help appreciated.
Performing action Visual Properties...[ from oracle.modeler.addin.ModelerEditor ]
java.lang.NullPointerException
o.jbo.dt.bcmodeler.bridge.Utils.findOrCreatePackage(Utils.java:187)
o.jbo.dt.bcmodeler.dragdrop.DBTableSubDropHandler.createJboObjects(DBTableSubDropHandler.java:57)
o.jbo.dt.bcmodeler.dragdrop.BaseSubDropHandler.dropObjects(BaseSubDropHandler.java:88)
o.diagram.framework.dragdrop.handler.DelegateChooserDropHandler.dropSelected(DelegateChooserDropHandler.java:386)
o.modeler.dnd.ModelerTCDropHandler.access$001(ModelerTCDropHandler.java:69)
o.modeler.dnd.ModelerTCDropHandler$3.run(ModelerTCDropHandler.java:288)
o.modeler.dif.GraphicAdder.addImpl(GraphicAdder.java:387)
o.modeler.dif.GraphicAdder.addAndLayoutImpl(GraphicAdder.java:372)
o.modeler.dif.GraphicAdder.addSelectAndLayout(GraphicAdder.java:348)
o.modeler.dnd.ModelerTCDropHandler.dropSelected(ModelerTCDropHandler.java:284)
o.diagram.framework.dragdrop.handler.DelegateChooserDropHandler.drop(DelegateChooserDropHandler.java:150)
o.diagram.framework.dragdrop.DefaultDropPlugin.drop(DefaultDropPlugin.java:115)
o.modeler.dnd.ModelerDropPlugin.drop(ModelerDropPlugin.java:100)
o.diagram.framework.dragdrop.DropTargetHelper.drop(DropTargetHelper.java:188)
o.diagram.framework.dragdrop.ManagerViewDragAndDropController$MyDropTargetListener.drop(ManagerViewDragAndDropController.java:802)
j.a.dnd.DropTarget.drop(DropTarget.java:434)
sun.awt.dnd.SunDropTargetContextPeer.processDropMessage(SunDropTargetContextPeer.java:519)
sun.awt.dnd.SunDropTargetContextPeer$EventDispatcher.dispatchDropEvent(SunDropTargetContextPeer.java:832)
sun.awt.dnd.SunDropTargetContextPeer$EventDispatcher.dispatchEvent(SunDropTargetContextPeer.java:756)
sun.awt.dnd.SunDropTargetEvent.dispatch(SunDropTargetEvent.java:30)
j.a.Component.dispatchEventImpl(Component.java:4487)
j.a.Container.dispatchEventImpl(Container.java:2099)
j.a.Component.dispatchEvent(Component.java:4460)
j.a.LightweightDispatcher.retargetMouseEvent(Container.java:4577)
j.a.LightweightDispatcher.processDropTargetEvent(Container.java:4312)
j.a.LightweightDispatcher.dispatchEvent(Container.java:4163)
j.a.Container.dispatchEventImpl(Container.java:2085)
j.a.Window.dispatchEventImpl(Window.java:2478)
j.a.Component.dispatchEvent(Component.java:4460)
j.a.EventQueue.dispatchEvent(EventQueue.java:599)
j.a.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
j.a.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
j.a.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
j.a.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
j.a.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
j.a.EventDispatchThread.run(EventDispatchThread.java:122)

I saw this problem and I know the solution.
Delete your Database Connection.
Then recreate your database connection via Application Navigator...
Application Resources | Connections | Right Click | New Connection | Database.
Related thread...
Re: Oracle JDeveloper 11g Handbook: A Guide to Fusion Web Development

10g: Database Diagram "Unable to Locate Elements For ..."

Hello,
In experimenting with JDeveloper 10g Diagram feature (IDE version 9.0.5.13.88), I experienced a rather vexing problem. I wondered if anyone could shed some light onto the issue for me and perhaps even help get it corrected.
I started off by Upgrading/Converting an existing 9.0.3 project up to 9.0.5. I then created a new Database Diagram (File | New..., General -> Diagrams -> Database Diagram). I then dragged 1 unconstrained view and 2 constrained views onto the diagram. It automatically drew the view links. I arranged the views on the diagram and then closed JDeveloper. I then closed the diagram and the workspace. When I attempted to reopen the diagram, I received the following error:
Unable to Locate Elements for Adhoc Reporting Model
In the list were the 3 views and associated viewlinks. Pressing continue yielded a blank diagram, much to my chagrin.
Any ideas?
Thanks,
Sean

When you mention views, I presume that you mean View Objects, if this correct. I also presume that you dragged and dropped these View Objects from the navigator, and that the View Link that you mention was already visible in the navigator, is this also correct?
Did you see your view objects in the navigator, when you re-opened JDev? Are they in the same project, as your diagram? The diagrammer should have been able to find the objects, if they are visible in your current project.
You state that you first shutdown JDeveloper, and then closed your diagram, and workspace, did your diagram re-appear as expected when you opened up JDeveloper, and it was only after closing the diagram, and workspace, and then re-opening the workspace and diagram that you ran into problems?
Did you save everything, before you shutdown JDeveloper?
There is no known bug on this, so it would be good to get very specific test steps for this, to enable us to log a bug. Incidentally, why did you chose to create a Database diagram, rather than a Business Components Diagram?

ER Database diagrams and materilized views

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