Toplink in near realtime systems

Hi,
The idea is to have toplink commit db transactions to a in-memory-db and then async process posts these transactions to the oracle DB. What is the best way of doing this? We are in the financial market.
Are there any utils/apis in toplink which can do a delayed transaction commit? Ideas/suggestions welcome.
thanks

With TopLink you can postpone commit for a long time and still be able to see modification in the result of your query without sending update to the db.
If you want to use a 2 steps DB for changes -> memory db then Oracle db, that's complicating the queries if they need to represent most recent data. To persist change for memory db to Oracle db you can use popular replication/synchronization scheme. Microsoft Access document some scheme in details. You will have to code the implemention of the synchronization, could be using TopLink for the task.
To get your queries represent the most recent data you could have two TopLink sessions, pointing to both db, then by piggybacking on conform in unit of work feature of TopLink you could get TopLink code do most of the work. By reading first the memory db, then transfer the data with the right state in the uow used to query on the oracle db, simulating modifications to UOW, you can then get your query against oracle db be conformed as usual.

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    I have a DVCAM sequence, and use the Decklink easy set up, but have the timeline set to DVCAM.
    Is it the problem that the decklink card cannot play DVCAM in realtime?
    I have tried to explain this to my friend, but he has not used an Avid so isn't used to a realtime system that has no delay.
    Avid have managed to crack this with their Mojo, and as DV is only 25 Mbits it would seam quite easy to stream way ahead from my raid.
    Any suggestions, or is this standard fair for FCP with a Decklink card?
    Are AJA any better?

    Hi Finalcutter,
    what is the playback offset set to?
    ('System Settings' window > 'Playback Control' tab)
    Default shoud be 4 (frames). Try to set to 0 (zero).
    Hope this helps, Oliver

  • Realtime playback for whole show?

    I've had the biggest concern for Color for a while.
    Doesn't Color allow realtime or near real time playback of the whole sequence, not just scanning clip to clip?
    The only way I know that my show is looking right is by watching it in real time. This shows me errors a lot better than simply clip to clip.
    This there a toggle I'm missing?
    -Eric

    How does it play the whole timeline.
    Summarized from the pdf manual inside Color (page 127):
    Color has two playback modes. The default is Shot Mode, which is what you're experiencing, it plays back only the current shot and defaults with Loop turned on.
    The second mode is Movie Mode, which plays back between the In and Out point. The first time you enter it it sets the In Point at the first shot in Track 1 and the Out point at the last shot in Track 1. You can set your own In / Out using the I and O keys.
    To toggle between modes press Shift-Control-M.
    If you haven't already I strongly suggest you read up on the Maintain Frame Rate options, as that'll strongly impact if you see every frame of your corrections or not and how smooth the timeline plays back. All of which is determined by how intensive your corrections are - the more secondaries, masks, ColorFx nodes the less likely you'll get anything near Realtime performance.
    I've gotten into the habit of just rendering everything out and watching playdown in FCP. I take extensive notes then go back into Color and start my tweaks. Less than ideal but I know exactly what Color is giving me and I'm watching in Real Time.
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