Best Method For Connection - JDev Team Help

Hi,
We are using a couple of different methods for obtaining a connection and pooling. I'm wondering what is the best method, though...if there is a preferred approach?
One approach is getting the ApplicationModuleRef from the request. We then release the amref as true/true or true/false (pending of if we need to maintain state), but we definitely try to release true/false whenever possible.
The other approach is using createRootApplicationModule. We then either release it back to the pool false or destroy it immediately w/ true.
Is there a preferred approach between the two? We are constantly struggling with inactive sessions that are not getting cleaned up when they reach our timeout limit which is causing severe memory issues with our application. Is one of our methods for obtaining the connection and releasing perhaps causing our pooling issues?
Any help on this would be greatly appreciated!
Thanks!
Andy Hamilton - TUSC

That is exactly the problem and with 100+ users on the system at one time our connection count gets large quite rapidly. The issue only occurs though with sessions released true/true...they are never reused, just new connections piled on top.
We are actually turning connection pooling on in hopes of it resolving our connection issues. Any idea though why if you release an amref true/true and then attempt to do a session.invalidate you would get this error:
java.lang.NullPointerException at oracle.jbo.server.DefaultTxnHandlerImpl.handleRollback(DefaultTxnHandlerImpl.java:125) at oracle.jbo.server.DBTransactionImpl.doRollback(DBTransactionImpl.java:3417) at oracle.jbo.server.DBTransactionImpl.rollback(DBTransactionImpl.java:1650) at oracle.jbo.common.ampool.ApplicationPoolImpl.resetApplicationModule(ApplicationPoolImpl.java:885) at oracle.jbo.common.ampool.ApplicationPoolImpl.removeSessionCookie(ApplicationPoolImpl.java:546) at oracle.jbo.common.ampool.SessionCookieImpl.timeout(SessionCookieImpl.java:365) at oracle.jbo.http.HttpSessionCookieImpl.timeout(HttpSessionCookieImpl.java:80) at oracle.jbo.http.HttpContainer.fireTimeout(HttpContainer.java:516) at oracle.jbo.http.HttpContainer.timeout(HttpContainer.java:241) at oracle.jbo.http.HttpContainer.valueUnbound(HttpContainer.java:308)
Thanks!
Andy

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I've been giving this some thought over the weekend and this is the best answer I've come up with from a developer's perspective:
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When bouncing- what's best method for smallest file size/highest quality?

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MUYconfundido wrote:
I am in the process of embedding 3 mp3's into a PDF to submit as a portfolio. The PDF also has text, and two scores included, and with the 3 embedded mp3's it can't be more than 10mb.
So my question is: When bouncing a project out of Logic, what is the best method for getting the smallest file size, but retaining the best audio quality?
The highest bitrate that falls within your limits. You'll have to calculate how big your MP3's can be, then choose the bitrate that keeps the size within your limit. The formula is simple: bitrate is the number of kilobits per second, so a 46 second stereo file at 96 kbps would be 96 x 46 = 4416 kbits / 8* = 552 kBytes or 0.552 MB. (*8 bits = 1 Byte)
So if you know the length of your tracks you can calculate what bitrate you need to keep it within 10 MB total.
I consider 128 kbps the lowest bearable bitrate for popsongs and other modern drumkit based music. Deterioration of sound quality is often directly related to the quality of the initial mix and the type of instruments used in it. Piano(-like) tones tend to sound watery pretty quickly at lower bitrates, as do crash and ride cymbals. But don't take my word for it, try it out.
And once it's out of Logic and it is an mp3 or other type of audio file, is there a best format for compressing it further, and still maintaining the relative quality?
You can only ZIP the whole thing after that, but that is just for transport. You'll have to unzip it again to use it. And no, you cannot compress an MP3 any further and still play it.
I bounced out the three projects into wav's. Now I am using Switch for Mac to compress them down to smaller Mp3's.
That is silly, you could have done that in Logic, which has one of the best MP3 encoders built in. And how good encoders are will especially come out at bitrates around or below 128, which you might be looking at.
I basically need them to be about 3 mb each.
So, one more scrap of info we need here: how long are those three pieces, exactly? I'll calculate the bitrate for you - but please bounce 'm directly out of Logic as MP3's. They will very probably sound better than your WAV-conversions made with Switch.
!http://farm5.static.flickr.com/4084/4996323899_071398b89a.jpg!
Two of the recordings sound OK at that size, but they are just MIDI(one project is piano and string quartet, the other is just piano- all software instruments. The recording that combines MIDI and Audio and has more tracks (three audio tracks and 10 Midi/software instrument tracks)and sounds completely horrible if I get it under 5 mb as an mp3. The problem is that I need all three to equal around 9mb, but still sound good enough to submit as a portfolio for consideration into a Master's program.
Length of the piece? And does the .Wav bounce you have sound OK?

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Hi Bigsky,
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Message was edited by: MacTech_09

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pjbarbour wrote:
I'm not quite sure what would be the best method for this. My client is using a 4x3 screen and SD projector at a large meeting, and they want me to just create a DVD that is letterboxed. I have one Premiere CS5 project that's 1920x1080, and another project that's 720x480 widescreen (1.2). I created a new sequence in both projects that is 720x480, 4x3 (0.9), and what I do is just scale the timeline down so that it's letterboxed. Is this the best method for achieving this? Or would you do something else? I don't like the idea of scaling my timeline down in Premiere.
Hello.
As Jim so rightly points out above, you do not need to do anything.
Just use your normal 16:9 widescreen footage, and author as normal.
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======
You do know about the need to match userids & groupids.
# display uid and gid
ls -ln
sudo find / -user short-user-name -exec ls '-l' {} \;
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/etc/passwd
/etc/group
# with care...
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/etc
/Applications
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Robert

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pjbarbour wrote:
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Hello.
As Jim so rightly points out above, you do not need to do anything.
Just use your normal 16:9 widescreen footage, and author as normal.
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Everything is Free! Until you have to pay for it.

Hello,
I think that the answer to your question it's on the example that I've made right now.
See the attached files....
Software developer
www.mcm-electronics.com
PS: Don't forget to rate a good anwser ; )
Currently using Labview 2011
PORTUGAL
Attachments:
Multi.vi ‏12 KB
Multi.PNG ‏6 KB

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