Is creating multiple FileInputStream for one file OK?

Are there any issue with creating multiple FileInputStream for a single file? I have code that reads from a same file in multiple threads. Presumably, it should be ok since the file is being opened as read-only with FileInputStream. I have not seen any problem with it, but I want to be sure that there are no issues with doing this.
Jae

i think that is no problem,becase when you complete creating a FileInputStream,
the FileInputStream is autocephaly and have't relation with File,but Class File is differ in this ,if you create much new File() from one file ,System will report a err.

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Multiple destinations for one file?

I'd like to have two destinations for one file - ie, local and on an FTP server. I ask because I've had the FTP fail, and can't find where Compressor stashed the render locally. Failing that, can I at least test the FTP connection (like in AfterEffects) before I commit to an hours-long encoding job?

Too Bad compressor doesn't have more than 1 destination, but if you want to find the temp file, the files are normally kept in /var/spool/qmaster , you can reveal this from the finder using the GO > GO TO FOLDER command, then typing in the above path. Of course you can change this temp space in the qmaster preferences in the System Preferences pane to any other folder you like.

Can I create multiple Targets for one Trigger?

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I want to create a mail merge for address labels into a table, but when I fill a table with merge fields, it ends up creating multiple entries for the same address, rather than one table full of each address.

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That is a quirk of Pagesthat it applies only one record per page.
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I'm sure this is something that's been covered in another post (or even in the help portal) but I think my wording in my search terms are not correct or... I don't know, because I just can't find what I'm looking for.
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Documentation and Examples

HP Officejet 6500A How do I scan a document with multiple pages into one file?

HP Officejet 6500A Plus e-All-in-One Printer - E710n
Windows 7 (64 bit)
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This question was solved.
View Solution.

Hi mpw101,
If you load the papers into the ADF - Automatic Document Feeder, and then select Document to PDF then they will all be scanning into one file. Let me know if this works for you?
I am an HP employee.
Say Thanks by clicking the Kudos Star in the post that helped you.
Please mark the post that solves your problem as "Accepted Solution"

How to open multiple sessions for one user?

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Re: Help with Procedure
Edited by: tem on Apr 18, 2012 6:44 AM

Thanks Jim,
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UPDATE:
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I would like to use the generic windows dialog box found in the toolbar under:
File I/O/Advanced File Functions/File Dialog
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Thanks for any help!
Carlton

Hi,
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I have made an example.
Good luck.
Oleg Chutko.
Attachments:
fileopen.vi ‏42 KB

How to create multiple copies of a file with renamed filenames

hi,
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i tried the below :
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for($i = 0; $i -lt $File.Count; $i++)
Copy-Item $File[$i].FullName ("D:\ABCFolder\" + $File[$i].BaseName + $i +".doc")
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but the below one didnt work:
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am getting the below erro when executing this code:
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$count = $file.Count
for ($x = 0; $x -lt $count; $x++)
$ext = $file[$x].Extension$name = $file[$x].BaseName
for($i = 0; $i -lt 100; $i++)
Copy-Item $File[$x].FullName -destination "D:\mfolder\$name_$i$ext"
/////////////////////////////error below://///////
At D:\mfolder\createcopies2.ps1:7 char:27
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+ ~~~~~
Unexpected token '$name' in expression or statement.
+ CategoryInfo : ParserError: (:) [], ParseException
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How do I save multiple songs as one file?

How do I save multiple songs as one file?

Mhoopes wrote:
How do I save multiple songs as one file?
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Technique #2 is the one normally used to create a continuous mix.

Problems with multiple idocs in one file ( Inbound file )

HI,
Thanks in Advance for your suggestions.. Highly appreciated.
We have problems with multiple IDocs in one file.
We are using XIB ( Amtrix ) as Middleware to receive the files.
Curretenly When the file contains one IDoc then there is no problem. IDoc is created and everything is ok.
If file contains two IDocs ( for example two messages ORDERS and DELVERY ) then it is creating two IDocs but both IDocs contains ORDERS plus DELIVERY segements information. That is the problem. Some how SAP unable to differentiate the IDocs in the file.. But it knows that how many idocs are there in the file..because it is creating exact number of idocs.
We are using TRFC port ... Do I need to change it to File port..
When we have more than one idoc do we need set any parameter in the file ...

Thanks for the swift response. Always ideas are useful.
As of now , Middleware cannot split the file.
Thing is SAP is creating two Idocs with different message types. Problem is First IDoc contains ORDERS message type but also DELIVERY segments as well. Second IDoc with DELIVERY message tyoe but ORDERS segments as well... This is the problem... I think we are missing some field activation in file for EDIDC record.
As far as I know file port supports the number of IDocs in one file.. Hope TRFC port also supports that

Red Raw Source Settings - multiple settings for one long clip?

Hello everyone,
I have a timeline with red raw material from Red Scarlet 4K. My DOP wants to make some adjustments in the source settings before Grading. I have some long merged clips (with a lot of changes in light etc.) and I have let`s say two different parts of one of the long clips in the timeline, so I tried to make some changes in the source settings for those two clips in the timeline, but the source settings change the master clip and not only the edited clips in the timeline. Is there a way to make adjustments in the source settings separately for every clip in the timeline?
after I open the source settings it won`t show me the part of the clip which I have in the timeline, but the whole clip from the beginning, so I have to search manually where my clip in the timeline begins, so I know how to adjust it. Is there a way that the source settings show me only the part of the clip (or at least an in and out point) I have in the timeline?

In my experience, each .RDC container can only have a single RMD (settings) file associated with it.
To create multiple settings for the same clip, you would have to duplicate the .RDC folder and its contents for each new setting required.
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Now, of course, if you're not grading in PrP, I can't say how the color correction software would know which duplicated files or settings to link to.
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Adobe - Feature Request/Bug Report Form

Scanning multiple pages into one file using MAC

How do I scan multiple pages and save them into one file or document using a MacBook Pro laptop? My printer is an HP Photosmart 7520. When I use this printer and scan from my PC, it does allow me to scan multiple copies and save as one document by just adding pages as I scan. When I scan with my MacBook Pro, it scans each page, however, I don't get any option or choice to save as one document. It automatically saves each page as a separate document.

Try scanning from your Mac. Use Image Capture app in your Applications folder.
Click once on the scanner on the left side, then click on Show Details along the bottom. Along the right side you will see LOTS of options for scanning and saving.
One of those is Format, make the Format PDF. Just below that will be a check box allowing you to scan multiple pages to one file.
Say thanks by clicking "Kudos" "thumbs up" in the post that helped you.
I am employed by HP

Scanning multiple pages to one file

I have a C310a All in One printer/scanner. My computer uses OS X 10.9 and all the drivers are updated. Is there a way to scan multiple pages to one file. I have tried the three methods mentioned in the HP bulletin for Mavericks but I can only scan one page to one file extension.

Welcome to the forums @BPGeneva ,
I understand you are looking to do a multiple page scan and save it as one file. I will do my best to help! The full driver for the C310a is not available with Mavericks. In having said that, you can try using Image Capture to scan multi-page documents.
Click this link and have a look at PrintDoc's suggestion: Re: Scanning multiple pages into one file using MAC
I hope that helps
R a i n b o w 7000I work on behalf of HP
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“Thanks” for helping!
Click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution!

Multiple databases in one file: a small snafu

Hello everyone,
Opening multiple databases in a single file is an administrative convenience. It is well explained in the manual (see db/docs/ref/am/opensub.html). Normally, there is little difference between databases in their own physical files or grouped together in a single physical file. There is one small sentence in the manual that says the following:
(begin fragment)
However, since multiple databases in a file exist in a single physical file, opening two databases in the same file simultaneously requires locking be enabled unless all of the handles are read-only. As the locks for the two databases can only conflict during page allocation, this additional locking is unlikely to affect performance.
(end fragment).
I didn't pay attention to it, except the "unlikely to affect performance" part which told me that I wasn't to worry about it. The sun was shining. Life was good.
And I was wrong. It was one of those "epic bug quests" I had to embark on, only to realise that it may not be a BDB bug, but my carelessnes. Nevertheless, I'm left with an uneasy feeling which I would like to explain here.
Consider BDB configured as a concurrent data store.
There are 2 threads. The first thread has the following pseudocode:
cursor1 = db1->cursor(...)
while(cursor1->c_get(... DB_NEXT...))
// 1
cursor2 = db2->cursor(...)
while(cursor2->c_get(... DB_NEXT...))
The second thread does only the following:
db3->put(...)
db1, db2 and db3 are all distinct databases. All cursors are read-only (the cursor implicitly used in db3->put is of course a write cursor).
While the first thread is running, the second thread executes db3->put(...) at "//1".
Question: what happens?
Answer 1: if db1, db2 and db3 reside in different physical files, nothing special happens. Everything proceeds as it should.
Answer 2: if db1, db2 and db3 reside in the same physical file, both threads block "sometimes".
The "sometimes" used here means "when the put operation in thread 2 needs to allocate a new page".
Reading the BDB source code is extraordinarily difficult (which says more about my limitations than about the clarity of the code) but here is what happens, as far as I could determine:
(thread 1) cursor1 needs and acquires a read lock on db1
(thread 2) db3->put needs a write lock on db2 to allocate a new page. Since db2 is in the same physical file as db1 and thread 1 already has a read lock, thread 2 waits until the read lock is released. Thread 2 blocks.
(thread 1) cursor 2 needs a read lock on db3. For some reason, BDB detects that the another thread is waiting for a write lock on the physical file, and thread 1 blocks.
Both threads block waiting on each other to complete.
I suppose the system is the way it is to avoid starvation, but there you have it: be careful when you're lumping together multiple databases in one file!
Anyone who can clarify or confirm this is welcome.
Vincent

I had experienced a similar problem. I run multiple process. Each one of them starts a transaction that does db->put and db->pget to its own database (which also has a secondary index). When each database is in a separate physical file there is no problem but when I put all databases in a single file the processes start to dead-lock.
The following combination of options solved the deadlocking problem:
- use serializable isolation level instead of snapshot, i.e. do not pass DB_TXN_SNAPSHOT to txn_begin
- do not pass the DB_NO_WAIT option to txn_begin
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Hope that helps.

Is creating multiple FileInputStream for one file OK?

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