AM instance removal from pool

Hi experts.
I need some help with clarifying some application module pool concepts.
What happens with application module instances and their database connections once they are removed from the AM pool, either because of Idle Instance Timeout or Maximum Instance Time to Live Timeout?
1. Aren't reserved DB connections returned back to the JDBC connection pool immediately? As Andrejus stated in his post ( [Optimizing Oracle ADF Application Pool|http://andrejusb.blogspot.com.es/2010/02/optimizing-oracle-adf-application-pool.html] ), even after an application module instance is removed from the pool, it's still alive and keeps DB connection reserved - in order to clean it, maximum time to live is set.
2. Why would be want to preserve DB connection after AM instance removal?
3. Do removed AM instances ever go back into the pool? Or else, wait to be garbage collected?
4. If Idle Instance Timeout (jbo.ampool.maxinactiveage) is set to be less than Maximum Instance Time to Live (jbo.ampool.timetolive). Which role plays the latter in AM instance removal / DB connection release?
Thanks,
Barbara

Hello, Frank. Thanks for your reply. More comments below:
(In our case, we are using data source connections)
+1. Aren't reserved DB connections returned back to the JDBC connection pool immediately? As Andrejus stated in his post ( [Optimizing Oracle ADF Application Pool|http://andrejusb.blogspot.com.es/2010/02/optimizing-oracle-adf-application-pool.html] ), even after an application module instance is removed from the pool, it's still alive and keeps DB connection reserved - in order to clean it, maximum time to live is set.+
+[Frank] Its configurable. If a user returns in time so the AM he used before could be handed back to him/her then the performance is better if no new database connection needed to be created. However, with the use of JDBC DataSources instead of JDBC URL in ADF BC the connection would be held and pooled by the Java EE container and not ADF Bc. So it is released.+
I know we can configure AM to disconnect DB connections upon release (Disconnect Application Module Upon Release option under Pooling and Scalability tab). This applies to AM instances being returned back to the pool. However, my question refers to AM instances being removed from the pool. Do they preserve DB connection even after removal?
+2. Why would be want to preserve DB connection after AM instance removal?+
+[Frank] To the time where ADF BC was configured with JDBC URL it was a performance gain+
What about JDBC data source connections?
+4. If Idle Instance Timeout (jbo.ampool.maxinactiveage) is set to be less than Maximum Instance Time to Live (jbo.ampool.timetolive). Which role plays the latter in AM instance removal / DB connection release?+
+[Frank] I guess the answer is that the first "jbo.ampool.maxinactiveage" would not see light. However, maxinactiveage leads to passivation and so this should not be sacrified+
Steve Muench on OTN Forums: Disabling jbo.ampool.timetolive
+"If you have minavailablesize set to 0 and you set the timetolive to a value in milliseconds that is larger than the max idle time, then you will effectively have disabled the time to live consideration since you'll always have removed the AM from the pool for being idle before you'd ever have to consider removing it for having exceeded its time-to-live setting."+
So, it's my understanding that when maxinactiveage < timetolive, then maxinactiveage determines AM instance removal while timetolive is a don't care value. Does it care for anything else?
I also read the following Note in section 40.2.2.2 How passivation Changes When Optional Failover Mode is Enabled of the Fusion Developer's Guide for Oracle ADF: "Passivation can also occur when an application module is timed out [...] (jbo.ampool.timetolive), ...". Therefore, it is timetolive and not maxinactiveage that leads to passivation. Am I right?
Thanks again,
Barbara

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Message was edited by: grits5 to change text color to black.

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I am working in one Achiving project. My requirement is to get data into flat file from Cluster table and pool table.
Is there any tool avilable to download data into flat file from pool table and cluster table ?
if table name given in the selection screen then data will be downloaded into flat file.
waiting for quick response.
Best Regards,
Bansidhar

Data cannot be retrived directly form the cluster table
as the Cluster results are stored in Cluster Key say for example PCLkey
and form that Key we need to fetch the data
these clustes are not the part of PNP or PNPCE tables
for ur info kindly check

How come I can't add a song to my playlists in itunes match? Is it me or itunes match? It keeps on coming up with a message " iCloud playlists can only contain songs from your iCloud music library. If you continue, the playlist will be removed from iCloud

How come I can't add a song to my playlists in itunes match? Is it me or itunes match? It keeps on coming up with a message " iCloud playlists can only contain songs from your iCloud music library. If you continue, the playlist will be removed from iCloud and will only be available on this computer"?
You must surely be able to add and subtract songs on specific playlist?

I fixed this issue (with help from tech support) and it involved several things.
After adding a song to iTunes, right-click on the song in iTunes and select "Update iTunes Match."
OR go to the iTunes menu-->Store-->Update iTunes Match.
Maybe that's the reason, it just hadn't updated to the cloud.
OR maybe it's not a high-enough bitrate file. This happens to me because most of my tunes are home-recorded.
Sometimes converting to .mp3 or Create AAC version might work. (You do this with a right-click in iTunes, and then you will want to remove the original file from iTunes.)
There is an iTunes Preferences setting, under General Preferences called Import Settings. Try setting it to AAC Encoder and iTunes Plus. That (I think) causes imports to be slightly better quality.
Good luck! The tech support person at Apple is requesting that a knowlege-base article be written about this.

AM instance removal from pool

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