How to Scale SDDM for Large Designs

We have an Oracle Designer repository with 5 databases with about 20 schemas that need to interact. Three of the databases are COTs systems while two are for custom development. On importing to SDDM we have almost 7000 objects and it takes forever to save the design. SDDM does not scale very well. If I add one column to one table I have to save the ENTIRE design. I hate to think about what that will mean when it comes time to synch with subversion. Does it have to compare everything in the ENTIRE design to determine what has changed?
Am I missing something? Is there a way to save just one table without saving the whole design? If not SDDM is only useful for small silo databases that don't need to interact. Can I have 20 schema based designs that can relate to other designs in the same database? For instance we have multiple application based schemes in a single database and they all refer to one reference schema with shared look up data in the same database.
I wish we could stay on Designer but our sysadmins do not want to support legacy OS's defined as anything older than MS Server 2008 R2 and Windows 7. And Data Modeler has some really nice features but doesn't support our current design approach. We like to provide our developers with diagrams with all the tables they will be interacting with on all the databases.
Any other users out there with large designs like this? How do you use SDDM?
Marcus Bacon

Phillip,
Thanks for the reply.
How do you count these 7000 objects?We have about 2500 entities and tables and no, not all on one diagram. This is the number that was imported from Designer. That is why I am struggling with SDDM because in Designer we divide and conquer. We have about 20 applications for our custom work and 3 COTS applications. We share/shortcut entities/tables needed from the COTs apps into our custom applications.
You need 64 bit OSI have been lazy on this one since the 32 bit installs JVM for me. I have a 64 bit box with 16 GB of memory and dual quad core CPU's, 2 - 500 GB disk drives which are slow and not RAID. Guess I will uninstall again and install 64 bit before complaining again.
Saving takes a long time and the last time I imported I received some errors yet the log page said 0. When I tried to save it, SDDM blew itself away. I would open a support request but right now I do not have support because the government people dropped it and we have been in the process of getting it back for several months. Any thoughts on the errors,
In Data Modeler 3.2 tables from other models can be referred thus you can have 20 models (500 objects each) and you can select to load only one or two models you need to work on.I keep hearing rumors of 3.2 and I may try to wait until it is out before we migrate. I know, Oracle doesn't comment on release dates so I won't ask if it will be out in the next few months.
There is a "save" at model level, but as I said you can use save at design level as well - only changed objects will be saved. How do you save at these different levels?
What version of Data Modeler do you use?I am currently using SDDM 3.1.3.709.

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Message was edited by:
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