How many apps can be open at one time?

My friend did not know how to close apps. I showed her and was shocked at how many she had open at one time. Everything since she got her ipad over a year ago. She must have had 30 games, pictures, internet, lists, contacts, mail, video, everything was open.
It made me curious if there is a maximum number that can be open at one time, and if at some point will they automatically close themselves?
Thanks

Open apps consume almost no resources, unless they run background refresh. Once they have been inactive for a while, iOS writes the current state back to storage, to free up RAM for other processes. You can see this when some apps, particularly big heavy games like Infinity Blade, relaunch from the starting splash screens instead of taking up precisely where they were left.
It's still good practice to close down stuff every so often, but not necessary, as you've discovered.

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How many meetings can be opened by one account at the same time?

I've tried Adobe Connect trial version.
There are few questions about the product.
1.How many meetings can be opened by one account at the same time?
   I could open 9meetings at the same time using other PCs. What is the limit?
2.What is the maximum of students in a meeting?
   I'm thinking of buying monthly/Individual product.
3.The meeting never end even though host is out of it. But we want to control.
   Can host close a meeting so that all participants are out of the session?
Thanks for your attention.

This depends on your licensing.
If you are using a Named Host license, then you can open one meeting at a time. If other members of the Meeting Host group are present in a room, then it should allow you to have multiple rooms open, one for each Meeting Host licensing being used.
If you are using the Concurrent Learner license, then each meeting you join uses a different licenses, so as long as you have concurrent seats available, you can open as many rooms as you want/need.
Maximum number of attendees (students) would be your room's concurrent maximum, less your self. The monthly version of Connect offers 25 concurrent attendees in each room, so that would be 24 students and you.
The meeting does end after it is dormant (no host) for ~15 min, however you can use the End Meeting function (Meeting > End Meeting) to close the meeting and remove everyone, including yourself, from the room.

HT4059 When I try to load an ePub book it says out of memory. How many books can you read at one time?

When I try to load a second book it says out of memory. How many books can be read at one time?

Thank you so much...
1. I don't have that fat format I checked as I saw this on another answer...BUT...you are right the project was very bloated and I made a new project with the sequence and moved a bunch of projects off to an outside drive and things are flying again...this effect "twirl" was on three clips and this seemed to be creating a problem along with it being a bloated project. Don't know why this effect renders easily then the next second doesn't it's on three clips on the entire project and one or another might not render all of a sudden.
2. I understand what you said about the timeline export...I decided to export the sequence without the matte it was nested in and that sequence did have the chapter markers on the timeline and they again didn't export??? I'll look tomorrow at this it makes no sense if what you're saying is how to do it...the final cut pro book said they should have showed up if I export from the browser and that didn't work either.
3. I then matted that output and rendered it to output but I am worried this will degrade and compress the sequence more than I want by outputting the same sequence with current settings twice???...the couple of outputs I could make nested looked very good as this was one render...however, I tried doing a quicktime "current settings" with the dvd studio pro info still trying to export chapter markers and maybe it's my imagination but the output didn't look as sharp as just an output with just chapter markers???
r. I did look at the final cut pro book and it says that mpeg 2 movies will not read chapter markers anyway if you create one in compressor...if this is true it makes no difference if the quicktime output isn't having chapter markers show up. I assume when I go to author though I can put an mpeg 2 movie into dvd studio pro and create chapter markers at that point!! It seems weird it says it can do it with an mpeg 1 but not an mpeg 2 when everyone is using that for dvds.

How many sockets can be opened to one port

Hi All,
There is a service installed on port 4444 of our server. In order to do some work with that service we open sockets to it with socket:localhost:4444. The thing we are finding is that it is quiet expensive to initialise these socket connections per request to our website and I'd like to pool connections. I have implemented a pool but currently this closing the connection when returning to the pool. I would actually like them to stayalive in the pool but I do not know if I can have many sockets open to one port?
Thanks!

You are unlikely to get an exact answer.
The first limit you'll probably run into is the number of file descriptors that can be open at a time. This depends on your OS and configured per-process limits.
Socket buffers use memory. Amount of memory, allowed process size (if your OS enforces that with in-kernel buffers), and size of send/receive buffers give another limit.
Other OS-dependent limits, such as a max global file descriptor count, may exist.
TCP/IPv4 (if you use that) connections are defined by a 4-tuple {source address, source port, destination address, destination port}. As long as source address&port are unique, the same destionation address&port can be used. So theoretically you could have some two hundred trillion connections to a port (32 bit addresses * 16 bit ports minus non-allowed addresses.)
In practical terms: check max file descriptor count. A few dozen to a few hundred should be ok for web server -class systems. Try and see what works.

How many pages can be open in one single tab before I lose the first page of the tab?

I use a tab for weather info on many places and I have lost the first few ones if I put too many places. Example: First page is Vancouver, last New York, and in the middle many places. How much pages is it safe to put in a single tab without losing ANY places from the beginning of the tab? EXTREMELY irritating to lose ones as I have to put all the places again (of course in fewer numbers)!
PS.Mozilla: If I shut down Firefox and I'm in the end of the tab containing the previous weather pages, I only get around 10 or so places backwards and lose all others, this SHOULD CHANGE! I want to have at least 30 places backwards there when I come back! Weather is not the only thing where people want tab-pages to be saved and safely there for the next session. This has bothered me for a year, please change this!

I'm not totally sure how many pages Firefox can remember. Its a lot though. If you want to view them, and count them if you want, click the back icon and hold it and a list will come up of recent web pages. I like your change idea though.
Cheers
Jon

How many users can I import at one time?

Is there a limit on how many users I can import at one time?
Also, how about other record types (Lead, Opportunity, Contacts ...etc.) Is there a limit on these also?
Where in the documentation that I can find info for this please?
I'm using CRMOD Release 18
Thanks

Account
30,000
Account Team
50,000
Appointment
30,000
Appointment Contact
50,000
Appointment User
50,000
Asset
80,000
Campaign
50,000
Contact (Admin)
30,000
Contact (Personal)
2,000
Contact Role
50,000
Contact Team
50,000
Lead
30,000
Notes
50,000
Opportunity
30,000
Opportunity Product
80,000
Opportunity Team
50,000
Portfolio
30,000
Product
80,000
Service Request
30,000
Solution
50,000
Task
30,000
Task Contact
50,000
Task User
50,000
User
500
Campaign Recipient
50,000
Custom Objects
30,000
Dealer
80,000
Vehicle
80,000

How many shows can you record at one time?

I have the CHS435HDC and I was talking to the rep and he thought it was 7 shows at one time....being a previous tech rep from the 'other guy', I know the standard is two shows at once and watching one of the other, nothing beyond those two.....
Anyone know the answer? Checked the website and didn't get anything, googled the manual and that was no help and cicso website doesn't show this model...
Thanks in advance...
K

humarock1150 wrote:
I have the CHS435HDC and I was talking to the rep and he thought it was 7 shows at one time....being a previous tech rep from the 'other guy', I know the standard is two shows at once and watching one of the other, nothing beyond those two.....
Anyone know the answer? Checked the website and didn't get anything, googled the manual and that was no help and cicso website doesn't show this model...
Thanks in advance...
K
You can record two programs at once, and concurrently:
1) Watch either of the programs being recorded.
2) Watch a previously recorded program.
You cannot watch a third channel or a VOD program.
The above is on the DVR itself. If you have additional STBs, you can of course watch other channels or VOD on them.
Justin
FiOS TV, 25/25 Internet, and Digital Voice user
QIP7232, QIP7100-P2, IMG 1.9.1
Keller, TX 76248

How many tabs can I open at a time when using Firefox 3.0.5 with Windows Xp?

I tried to open 25 tabs in one window using firefox 3.0.5 with windows xp. It would only let me open 10. Tabs I added after 10 were added, but tabs at the begining were erased. What do I have to do to open all the tabs that I may need without changing the firefox or windows version? Do I need to open a new browser window for every 10 tabs?

Start Firefox in [[Safe Mode]] to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes). 
See [[Troubleshooting extensions and themes]] and [[Troubleshooting plugins]] 
 
If it does work in Safe-mode then disable all your extensions and then try to find which is causing it by enabling one at a time until the problem reappears. 
You can use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions. 
You have to close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")

How many people can you email at one time with Mail?

I am using filemaker pro 9 to email some of my customers. Does anyone know if there is a limit? Can I send 3,000 people the same email? I have them in my address book. I sent one email yesterday to my list and it appears not all emails were received.
Thanks if anyone knows what the limit is.
Judy

Mail does not set any particular limit; your email provider would be setting limits. But if you're sending bulk emails, all the recipients should be in the BCC field, not the To: field, as everyone in that field is counted as a separate message. You (the sender) should be the only one listed in the To: field.
At the same time, putting everyone in the To: field violates the privacy of everyone else and exposes them to the very real risk of having their email address hijacked and used to send and receive spam.
Mulder

How many documents can you merge at one time

I ran into an issue where someone was merging a considerable amount of pdf's and it errored out indicating an error viewing capacity. Does anyone know what that capacity is? Thanks,

I've asked her to retry the merge and to exclude the document if fails on to see if that document is the culprit. Thank you for your reply. If you have merged in the past with hundreds of documents then there shouldn't be any problem with us doing it as well. If you don't what version of Adobe are you using and is the version fully patched? Thanks,

How many ipads can i sync to one iMac?

I am a teacher and our ESL team is considering getting 4-5 iPads for our students and we are wondering how many iPads can we sync to one iMac? I thought it could be potentially much easlier to sync all 5 iPads to one iMac and use this one iMac and its iTunes as our sync station since I am planning on having our team all use pretty much all the same apps with our students...is this possible?

Hi mstaum,
Yes, they can all sync to the same iTunes library. The key is the AppleID that you will be using. Are you planning on using the same AppleID and iCloud account for all users? If so, then you will want to be sure to set up the Restrictions on each iPad to require a Password for purchases immediately, so you can prevent the students from purchasing other apps on the credit card you are using for the iTunes account....
Hope this helps!
Cheers,
GB

How many databases can be opened simultaneously in a single file?

To all:
I don't known how many databases can be opened simultaneously in a single file. After my application open 499 databases in a single file simultaneously, DB->open return error 12.(can not allocate memory ?).
How can i do ? Thanks.

I found it:
Berkeley DB Reference Guide:
Locking Subsystem
PrevRefNext
Configuring locking: sizing the system
The lock system is sized using the following three methods:
DB_ENV->set_lk_max_locks
DB_ENV->set_lk_max_lockers
DB_ENV->set_lk_max_objects
The DB_ENV->set_lk_max_locks, DB_ENV->set_lk_max_lockers, and DB_ENV->set_lk_max_objects methods specify the maximum number of locks, lockers, and locked objects supported by the lock subsystem, respectively. The maximum number of locks is the number of locks that can be simultaneously requested in the system. The maximum number of lockers is the number of lockers that can simultaneously request locks in the system. The maximum number of lock objects is the number of objects that can simultaneously be locked in the system. Selecting appropriate values requires an understanding of your application and its databases. If the values are too small, requests for locks in an application will fail. If the values are too large, the locking subsystem will consume more resources than is necessary. It is better to err in the direction of allocating too many locks, lockers, and objects because increasing the number of locks does not require large amounts of additional resources. The default values are 1000 of each type of object.
When configuring a Berkeley DB Concurrent Data Store application, the number of lock objects needed is two per open database (one for the database lock, and one for the cursor lock when the DB_CDB_ALLDB option is not specified). The number of locks needed is one per open database handle plus one per simultaneous cursor or non-cursor operation.
Configuring a Berkeley DB Transactional Data Store application is more complicated. The recommended algorithm for selecting the maximum number of locks, lockers, and lock objects is to run the application under stressful conditions and then review the lock system's statistics to determine the maximum number of locks, lockers, and lock objects that were used. Then, double these values for safety. However, in some large applications, finer granularity of control is necessary in order to minimize the size of the Lock subsystem.
The maximum number of lockers can be estimated as follows:
* If the database environment is using transactions, the maximum number of lockers can be estimated by adding the number of simultaneously active non-transactional cursors open database handles to the number of simultaneously active transactions and child transactions (where a child transaction is active until it commits or aborts, not until its parent commits or aborts).
* If the database environment is not using transactions, the maximum number of lockers can be estimated by adding the number of simultaneously active non-transactional cursors and open database handles to the number of simultaneous non-cursor operations.
The maximum number of lock objects needed for a single database operation can be estimated as follows:
* For Btree and Recno access methods, you will need one lock object per level of the database tree, at a minimum. (Unless keys are quite large with respect to the page size, neither Recno nor Btree database trees should ever be deeper than five levels.) Then, you will need one lock object for each leaf page of the database tree that will be simultaneously accessed.
* For the Queue access method, you will need one lock object per record that is simultaneously accessed. To this, add one lock object per page that will be simultaneously accessed. (Because the Queue access method uses fixed-length records and the database page size is known, it is possible to calculate the number of pages -- and, therefore, the lock objects -- required.) Deleted records skipped by a DB_NEXT or DB_PREV operation do not require a separate lock object. Further, if your application is using transactions, no database operation will ever use more than three lock objects at any time.
* For the Hash access method, you only need a single lock object.
For all access methods, you should then add an additional lock object per database for the database's metadata page.
Note that transactions accumulate locks over the transaction lifetime, and the lock objects required by a single transaction is the total lock objects required by all of the database operations in the transaction. However, a database page (or record, in the case of the Queue access method), that is accessed multiple times within a transaction only requires a single lock object for the entire transaction.
The maximum number of locks required by an application cannot be easily estimated. It is possible to calculate a maximum number of locks by multiplying the maximum number of lockers, times the maximum number of lock objects, times two (two for the two possible lock modes for each object, read and write). However, this is a pessimal value, and real applications are unlikely to actually need that many locks. Reviewing the Lock subsystem statistics is the best way to determine this value.
I created DB_CONFIG file, and add three lines:
set_lk_max_locks 20000
set_lk_max_lockers 20000
set_lk_max_objects 20000
As the default values are 1000 of each type of object, my applicaton open 499 database(except internal database) simultaneously(CDB modal) . After changed parameters, my application opend above 6000 database.

If you only get an 8g ipod touch 4th generation, how many apps can you get

I want to know if i get an Ipod touch 8G 4th generation, how many apps can i get?

I have one and yeah, as others have mentioned, it depends what apps you're putting on it. However, I have found myself extremely restricted by the 8GB limit. I can only put about a single home screen's worth of new apps on my iPod without it running out of space, and that was after deleting all music, photos, and videos. So... I definitely recommend getting a larger capacity.

How many iPads can you setup on one iTunes account for a school?

How many iPads can you setup on one iTunes account for a school?
What is the best system? We have 30 iPads.

That would be fine.

How many ipads can be synced with one itunes account, how many ipads can be synced with one itunes account

how many ipads can be synced with one itunes account?

http://gigaom.com/apple/itunes-101-multiple-devices-one-itunes-account/
 Cheers, Tom

How many apps can be open at one time?

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